{"id":36235,"date":"2021-04-28T11:48:00","date_gmt":"2021-04-28T16:48:00","guid":{"rendered":"https:\/\/www.rosehosting.com\/blog\/?p=36235"},"modified":"2024-03-06T05:10:22","modified_gmt":"2024-03-06T11:10:22","slug":"mongodb-replica-set-with-master-slave-replication-and-automated-failover","status":"publish","type":"post","link":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/","title":{"rendered":"MongoDB Replica Set with Master-Slave Replication and Automated Failover"},"content":{"rendered":"<div id=\"bsf_rt_marker\"><\/div>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"742\" height=\"372\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover.jpg\" alt=\"\" class=\"wp-image-36415\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover.jpg 742w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x150.jpg 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x75.jpg 150w\" sizes=\"(max-width: 742px) 100vw, 742px\" \/><\/figure>\n\n\n\n<p>A replica set is a group of MongoDB database nodes used for defining database clusters with master-slave replication and automated failover. A replica set contains a single primary node, multiple secondary nodes, and an arbiter node. The primary node receives all write operations while other nodes apply operations from the primary so that all nodes have the same data set.<\/p>\n\n\n\n<!--more-->\n\n\n\n<p>If your primary node breaks due to hardware failure or system-related issues, the replica set members autonomously select a new primary node, and your application functioning without manual intervention.<\/p>\n\n\n\n<p>In this post, we will explain how to set up a MongoDB replica set with three nodes. We will also show you how to create an environment, configure authentication between multiple database nodes and finally configure the replication between all nodes.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_65 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-663dfaee432a7\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-663dfaee432a7\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#Create-a-MongoDB-Environment\" title=\"Create a MongoDB Environment\">Create a MongoDB Environment<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#Add-MongoDB-Authentication-Key-File\" title=\"Add MongoDB Authentication Key File\">Add MongoDB Authentication Key File<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#Configure-MongoDB-Replication\" title=\"Configure MongoDB Replication\">Configure MongoDB Replication<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#MongoDB-Replica-Set-Arbiter\" title=\"MongoDB Replica Set Arbiter\">MongoDB Replica Set Arbiter<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#Test-MongoDB-Cluster-Availability\" title=\"Test MongoDB Cluster Availability\">Test MongoDB Cluster Availability<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"h-create-a-mongodb-environment\"><span class=\"ez-toc-section\" id=\"Create-a-MongoDB-Environment\"><\/span>Create a MongoDB Environment<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>First, log in to RoseHosting Cloud platform at https:\/\/app.rosehosting.cloud as shown below:<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"529\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-and-automated-failover-guide.png\" alt=\"mongodb replica set and automated failover guide\" class=\"wp-image-36240\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-and-automated-failover-guide.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-and-automated-failover-guide-300x155.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-and-automated-failover-guide-150x77.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-and-automated-failover-guide-768x397.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Click on the <strong>NEW ENVIRONMENT<\/strong> to create a new MongoDB environment as shown below:<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"531\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-tutorial.png\" alt=\"mongodb replica set with master-slave replication tutorial\" class=\"wp-image-36242\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-tutorial.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-tutorial-300x156.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-tutorial-150x78.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-tutorial-768x398.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Click on the <strong>PHP<\/strong> tab, Select the appropriate MongoDB version, Select reserved cloudlets, Add three <a href=\"https:\/\/www.rosehosting.com\/managed-cloud-hosting.html\">MongoDB instances in Horizontal scaling<\/a>, Define your environment and click on the Create button. Once the MongoDB environment has been created, you should see the following screen:<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"531\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/how-to-setup-mongodb-replica-set-with-master-slave-replication.png\" alt=\"how to setup mongodb replica set with master-slave replication\" class=\"wp-image-36244\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/how-to-setup-mongodb-replica-set-with-master-slave-replication.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/how-to-setup-mongodb-replica-set-with-master-slave-replication-300x156.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/how-to-setup-mongodb-replica-set-with-master-slave-replication-150x78.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/how-to-setup-mongodb-replica-set-with-master-slave-replication-768x398.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-add-mongodb-authentication-key-file\"><span class=\"ez-toc-section\" id=\"Add-MongoDB-Authentication-Key-File\"><\/span>Add MongoDB Authentication Key File<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Next, you will need to generate and add a MongoDB authentication key to secure the communication between all nodes.<br><strong>Follow the below steps to generate and add the MongoDB key:<\/strong><\/p>\n\n\n\n<p><strong>Step 1:<\/strong> Click on the <strong>Web SSH<\/strong> to log into the NOSQL Database node:<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"320\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/setting-up-mongodb-replica-set-and-automated-failover.png\" alt=\"setting up mongodb replica set and automated failover\" class=\"wp-image-36246\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/setting-up-mongodb-replica-set-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/setting-up-mongodb-replica-set-and-automated-failover-300x94.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/setting-up-mongodb-replica-set-and-automated-failover-150x47.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/setting-up-mongodb-replica-set-and-automated-failover-768x240.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Step 2:<\/strong> Now, run the following command to generate a key and store it in the file named my.key:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">openssl rand -base64 741 &gt; my.key<\/pre>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"303\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png\" alt=\"step-by-step guide to mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36249\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x89.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x44.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover-768x227.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Step 3:<\/strong> Next, you will need to copy the generated key to all database nodes. To do so, click on the <strong>Config<\/strong> button to open the <strong>File Manager<\/strong> as shown below:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"134\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png\" alt=\"guide to mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36251\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x39.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x20.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover-768x101.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"474\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/tutorial-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-1.png\" alt=\"tutorial for mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36255\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/tutorial-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-1.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/tutorial-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-1-300x139.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/tutorial-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-1-150x69.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/tutorial-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-1-768x356.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Step 4: <\/strong>Here, you will need to open the <strong>my.key<\/strong> file located at <strong>\/home\/jelastic\/my.key<\/strong>. You should see the content of the <strong>my.key<\/strong> file as shown below:<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"376\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/ultimate-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png\" alt=\"ultimate guide to mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36258\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/ultimate-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/ultimate-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x110.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/ultimate-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x55.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/ultimate-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover-768x282.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Step 5:<\/strong> Now, copy its content to the clipboard. Then, navigate to the <strong>\/var\/lib\/jelastic\/keys<\/strong> directory as shown below:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"476\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png\" alt=\"easy guide to mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36261\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x139.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x70.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-guide-to-mongodb-replica-set-with-master-slave-replication-and-automated-failover-768x357.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Step 6:<\/strong> Now, create a new file named <strong>mongo-set.key<\/strong> and paste the content from the clipboard as shown below:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"374\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-steps-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png\" alt=\"easy steps for mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36264\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-steps-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-steps-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x110.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-steps-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x55.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-steps-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-768x281.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Step 7:<\/strong> Now, click on the <strong>Save<\/strong> =&gt; <strong>Save for all instances<\/strong> to apply the changes.<\/p>\n\n\n\n<p>At this point, <strong>mongo-set.key<\/strong> will be distributed across all nodes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-configure-mongodb-replication\"><span class=\"ez-toc-section\" id=\"Configure-MongoDB-Replication\"><\/span>Configure MongoDB Replication<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Next, you will need to edit the mongod.conf file and enable the replication and define the path of the mongo-set.key.<\/p>\n\n\n\n<p><strong>Follow the below steps to configure MongoDB replication.<\/strong><\/p>\n\n\n\n<p><strong>Step 1:<\/strong> Edit the \/etc\/mongod.conf file within the same configuration tab as shown below:<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"354\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-tips-on-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png\" alt=\"easy tips on mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36267\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-tips-on-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-tips-on-mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x104.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-tips-on-mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x52.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-tips-on-mongodb-replica-set-with-master-slave-replication-and-automated-failover-768x266.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Specify the unique name for your replica set, specify the path to your key file then click on the <strong>Save<\/strong> =&gt; <strong>Save for all instances<\/strong> to save the changes.<\/p>\n\n\n\n<p><strong>Step 2:<\/strong> Next, click on the <strong>Restart<\/strong> <strong>Nodes<\/strong> button to start your database nodes to apply the changes.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"268\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-tutorial-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png\" alt=\"easy tutorial for mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36270\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-tutorial-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-tutorial-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x79.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-tutorial-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x39.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-tutorial-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-768x201.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Step 3 :<\/strong> Now, click on the <strong>Web SSH<\/strong> to access the first database node that you want to use as a <strong>PRIMARY<\/strong> as shown below:<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"497\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/how-to-configure-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png\" alt=\"how to configure mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36273\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/how-to-configure-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/how-to-configure-mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x146.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/how-to-configure-mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x73.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/how-to-configure-mongodb-replica-set-with-master-slave-replication-and-automated-failover-768x373.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Step 4: <\/strong>Now, connect to the MongoDB database which should be replicated using the appropriate admin credentials:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">mongod -u username -p password dbname\n<\/pre>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"530\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-configuration-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png\" alt=\"easy configuration for mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36276\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-configuration-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-configuration-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x155.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-configuration-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x78.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-configuration-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-768x398.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>where:<\/strong><\/p>\n\n\n\n<p><strong>username<\/strong> : MongoDB admin username sent to your email address.<br><strong>password<\/strong> : Password for the admin user sent to your email address.<br><strong>dbname<\/strong> : Name of the MongoDB database that you want to replicate.<\/p>\n\n\n\n<p><strong>Step 5: <\/strong>Once the connection has been established, find the IP address of the first database node as shown below:<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"275\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-guide.png\" alt=\"mongodb replica set with master-slave replication and automated failover easy guide\" class=\"wp-image-36279\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-guide.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-guide-300x81.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-guide-150x40.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-guide-768x206.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Then, run the following command to define parameters for the current MongoDB node:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">config = {_id : \"db-replication\", members : [{_id : 0, host:\"10.100.2.38:27017\"},]}\n<\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"369\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-complete-guide.png\" alt=\"mongodb replica set with automated failover complete guide\" class=\"wp-image-36282\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-complete-guide.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-complete-guide-300x108.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-complete-guide-150x54.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-complete-guide-768x277.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Where :<\/strong><\/p>\n\n\n\n<p><strong>10.100.2.38<\/strong> is the IP address of the first database node.<br><strong>db-replication<\/strong> is the name of the replica set which you have defined in the mongod.conf file.<\/p>\n\n\n\n<p><strong>Step 6:<\/strong> Next, initiate the replica set with the following command:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">rs.initiate()\n<\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"327\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-easy-tutorial.png\" alt=\"mongodb replica set with master-slave replication easy tutorial\" class=\"wp-image-36284\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-easy-tutorial.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-easy-tutorial-300x96.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-easy-tutorial-150x48.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-easy-tutorial-768x245.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Step 7:<\/strong> Next, run the following command for the remaining two database node:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">rs.add(\"10.100.2.36:27017\")\nrs.add(\"10.100.2.37:27017\")\n<\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"429\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-ultimate-guide.png\" alt=\"mongodb replica set with automated failover ultimate guide\" class=\"wp-image-36287\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-ultimate-guide.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-ultimate-guide-300x126.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-ultimate-guide-150x63.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-ultimate-guide-768x322.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Where:<\/strong><\/p>\n\n\n\n<p><strong>10.100.2.36<\/strong> is the IP address of the second database node.<br><strong>10.100.2.37<\/strong> is the IP address of the third database node.<\/p>\n\n\n\n<p><strong>Step 8:<\/strong> After adding all database node members, run the following command to get detailed information of your replica set.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">rs.status()\n<\/pre>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"430\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-configuration-guide.png\" alt=\"mongodb replica set with automated failovermongodb replica set with automated failover configuration guide configuration guide\" class=\"wp-image-36290\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-configuration-guide.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-configuration-guide-300x126.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-configuration-guide-150x63.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-configuration-guide-768x323.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-mongodb-replica-set-arbiter\"><span class=\"ez-toc-section\" id=\"MongoDB-Replica-Set-Arbiter\"><\/span>MongoDB Replica Set Arbiter<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>If you have configured an odd number of members in the replica set then it would be more reliable. Otherwise, it is recommended to add an arbiter node to maintains a quorum. Arbiter is used to exchanges user credentials between all replicas. It is a good idea to run the arbiter on a separate node.<\/p>\n\n\n\n<p><strong>Follow the below steps to add an arbiter node to the replica set:<\/strong><\/p>\n\n\n\n<p><strong>Step 1:<\/strong> Edit your MongoDB environment as shown below:<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"142\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-step-by-step-tutorial.png\" alt=\"mongodb replica set with automated failover step-by-step tutorial\" class=\"wp-image-36293\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-step-by-step-tutorial.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-step-by-step-tutorial-300x42.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-step-by-step-tutorial-150x21.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-automated-failover-step-by-step-tutorial-768x107.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"529\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-step-by-step-guide.png\" alt=\"mongodb replica set with master-slave replication and automated failover step-by-step guide\" class=\"wp-image-36295\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-step-by-step-guide.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-step-by-step-guide-300x155.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-step-by-step-guide-150x77.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-step-by-step-guide-768x397.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Add one extra node to the database cluster horizontally then click on the <strong>Apply<\/strong> button to recreate an environment.<\/p>\n\n\n\n<p><strong>Step 2:<\/strong> Once the environment has been created. You should see a fourth database node on the following page:<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"218\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-configuration.png\" alt=\"mongodb replica set with master-slave replication and automated failover easy configuration\" class=\"wp-image-36297\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-configuration.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-configuration-300x64.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-configuration-150x32.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-configuration-768x164.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Step 3:<\/strong> Click on the config button within the fourth node, create a key file mongo-set.key and paste the same content from the other database node.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"430\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-instructions.png\" alt=\"mongodb replica set with master-slave replication and automated failover instructions\" class=\"wp-image-36299\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-instructions.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-instructions-300x126.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-instructions-150x63.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-instructions-768x323.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>Click on the <strong>Save<\/strong> button to save the changes.<\/p>\n\n\n\n<p><strong>Step 4:<\/strong> Edit the <strong>mongod.conf<\/strong> file and define the replica set name and keyfile path as shown below:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"431\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-instructional-guide.png\" alt=\"mongodb replica set with master-slave replication and automated failover instructional guide\" class=\"wp-image-36301\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-instructional-guide.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-instructional-guide-300x126.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-instructional-guide-150x63.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-instructional-guide-768x323.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>Click on the <strong>Save<\/strong> button to save the changes.<\/p>\n\n\n\n<p><strong>Step 5: <\/strong>Restart the fourth node to apply the configuration changes.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"276\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-instructions.png\" alt=\"mongodb replica set with master-slave replication and automated failover easy instructions\" class=\"wp-image-36303\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-instructions.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-instructions-300x81.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-instructions-150x40.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover-easy-instructions-768x207.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Step 6:<\/strong> Connect to the first database node with <strong>Web SSH<\/strong> and run the following command to add the arbiter node to the cluster:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">rs.addArb(\"10.100.2.39:27017\")\n<\/pre>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"428\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png\" alt=\"instructions for mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36306\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x125.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x63.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-768x321.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Where:<\/strong><\/p>\n\n\n\n<p><strong>10.100.2.39<\/strong> is the IP address of the fourth node.<\/p>\n\n\n\n<p><strong>Step 7: <\/strong>Next you will need to check whether the fourth node became an arbiter or not. To check it, connect to the fourth node with <strong>Web SSH<\/strong> and connect to the MongoDB with the following command:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">mongod -u username -p password dbname\n<\/pre>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"528\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png\" alt=\"easy instructions for mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36309\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x155.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x77.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-768x396.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>As you can see, the fourth node acts as the <strong>arbiter<\/strong> of db-replication.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-test-mongodb-cluster-availability\"><span class=\"ez-toc-section\" id=\"Test-MongoDB-Cluster-Availability\"><\/span>Test MongoDB Cluster Availability<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>In this section, we will check whether MongoDB cluster availability functioning or not. To do so, you will need to add an application server to the MongoDB environment.<\/p>\n\n\n\n<p><strong>Step 1:<\/strong> Click on the <strong>Change Environment Topology<\/strong> button to edit the MongoDB environment.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"142\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructional-guide-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png\" alt=\"instructional guide for mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36311\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructional-guide-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructional-guide-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x42.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructional-guide-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x21.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructional-guide-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-768x107.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"529\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-complete-instructions.png\" alt=\"mongodb replica set with master-slave replication complete instructions\" class=\"wp-image-36313\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-complete-instructions.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-complete-instructions-300x155.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-complete-instructions-150x77.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-complete-instructions-768x397.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Add the <strong>Apache<\/strong> application server and click on the <strong>Apply<\/strong> button to re-create the environment.<\/p>\n\n\n\n<p><strong>Step 2:<\/strong> Once the application server is added to the environment, click on the config tab of the Apache server.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"172\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/complete-instructions-for-mongodb-replica-set-with-master-slave-replication.png\" alt=\"complete instructions for mongodb replica set with master-slave replication\" class=\"wp-image-36315\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/complete-instructions-for-mongodb-replica-set-with-master-slave-replication.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/complete-instructions-for-mongodb-replica-set-with-master-slave-replication-300x50.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/complete-instructions-for-mongodb-replica-set-with-master-slave-replication-150x25.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/complete-instructions-for-mongodb-replica-set-with-master-slave-replication-768x129.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Step 3:<\/strong> Navigate to the <strong>\/var\/www\/webroot\/ROOT<\/strong> directory, edit the index.php file, remove the default content and add the following content:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;?php\n    try {\n        $mongodbConnectionURI= \"mongodb:\/\/dbuser:dbpassword@firstnodeid-environmentname:27017,secondnodeid-mongo.rosehosting.us:27017,thirdnodeid-environmentname:27017,fourthnodeid-environmentname:27017\/?replicaSet=replicasetname&amp;readPreference=primary\";\n    $manager = new MongoDB\\Driver\\Manager($mongodbConnectionURI);\n\n    $command = new MongoDB\\Driver\\Command(['ping' =&gt; 1]);\n    $cursor = $manager-&gt;executeCommand('db', $command);\n    $response = $cursor-&gt;toArray()[0];\n    var_dump($response);\n    echo'<br><br>';\n    var_dump($manager-&gt;getServers());\n    } catch (Exception $e){\n        echo $e-&gt;getMessage();\n        }\n?&gt;\n<\/pre>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"495\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png\" alt=\"step-by-step instructions for mongodb replica set with master-slave replication and automated failover\" class=\"wp-image-36317\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-300x145.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-150x73.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-instructions-for-mongodb-replica-set-with-master-slave-replication-and-automated-failover-768x371.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Click on the <strong>Save<\/strong> button to apply the changes.<\/p>\n\n\n\n<p><strong>Where:<\/strong><\/p>\n\n\n\n<p><strong>dbuser<\/strong> is the admin user of the first node.<br><strong>dbpassword<\/strong> is the password of the first node user.<br><strong>firstnodeid<\/strong> is the ID of the first node.<br><strong>secondnodeid<\/strong> is the ID of the second node.<br><strong>thirdnodeid<\/strong> is the ID of the third node.<br><strong>fourthnodeid<\/strong> is the ID of the fourth node.<br><strong>environmentname<\/strong> is the name of your environment.<br><strong>replicasetname<\/strong> is the name of the replica set that you have defined in the mongod.conf.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"342\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-instructions-for-mongodb-replica-set-with-master-slave-replication.png\" alt=\"step-by-step instructions for mongodb replica set with master-slave replication\" class=\"wp-image-36319\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-instructions-for-mongodb-replica-set-with-master-slave-replication.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-instructions-for-mongodb-replica-set-with-master-slave-replication-300x100.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-instructions-for-mongodb-replica-set-with-master-slave-replication-150x50.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/step-by-step-instructions-for-mongodb-replica-set-with-master-slave-replication-768x257.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Step 4:<\/strong> Next, you will need to define the mongodb extension in the php.ini file to interact Apache with the MongoDB server. To do so, navigate to <strong>\/etc\/<\/strong> directory, edit the <strong>php.ini<\/strong> file, find the <strong>[mongodb]<\/strong> section, and remove the semicolon before the extension=mongodb.so line to enable this extension as shown below:<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"528\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructions-for-mongodb-replica-set-with-master-slave-replication.png\" alt=\"instructions for mongodb replica set with master-slave replication\" class=\"wp-image-36321\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructions-for-mongodb-replica-set-with-master-slave-replication.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructions-for-mongodb-replica-set-with-master-slave-replication-300x155.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructions-for-mongodb-replica-set-with-master-slave-replication-150x77.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructions-for-mongodb-replica-set-with-master-slave-replication-768x396.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Click on the <strong>Save<\/strong> button to save the changes.<\/p>\n\n\n\n<p><strong>Step 5:<\/strong> Now, restart the Application server node to apply the changes.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"176\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-instructions-for-mongodb-replica-set-with-master-slave-replication.png\" alt=\"easy instructions for mongodb replica set with master-slave replication\" class=\"wp-image-36323\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-instructions-for-mongodb-replica-set-with-master-slave-replication.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-instructions-for-mongodb-replica-set-with-master-slave-replication-300x52.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-instructions-for-mongodb-replica-set-with-master-slave-replication-150x26.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/easy-instructions-for-mongodb-replica-set-with-master-slave-replication-768x132.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Step 6:<\/strong> Now, click on the Open in Browser button to open your application in a web browser.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"529\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructional-guide-for-mongodb-replica-set-with-master-slave-replication.png\" alt=\"instructional guide for mongodb replica set with master-slave replication\" class=\"wp-image-36325\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructional-guide-for-mongodb-replica-set-with-master-slave-replication.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructional-guide-for-mongodb-replica-set-with-master-slave-replication-300x155.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructional-guide-for-mongodb-replica-set-with-master-slave-replication-150x77.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/instructional-guide-for-mongodb-replica-set-with-master-slave-replication-768x397.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>You should see the detailed information about your replica set nodes in the following page:<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"535\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-step-by-step-guide.png\" alt=\"mongodb replica set with master-slave replication step-by-step guide\" class=\"wp-image-36328\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-step-by-step-guide.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-step-by-step-guide-300x157.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-step-by-step-guide-150x78.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-step-by-step-guide-768x401.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>You can see the IP address and port of each node with primary, secondary, and arbiter node information in the above image. That means the replica set is functioning properly.<\/p>\n\n\n\n<p>With our <a href=\"https:\/\/www.rosehosting.com\/managed-cloud-hosting.html\">managed cloud hosting<\/a>, you don&#8217;t need to do any of this configuration, simply ask our technical support guys and they will set up MongoDB Replicate Set with Master-Slave Replication and Automated Failover, for you and free of charge. They are available 24\/7.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A replica set is a group of MongoDB database nodes used for defining database clusters with master-slave replication and automated &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"MongoDB Replica Set with Master-Slave Replication and Automated Failover\" class=\"read-more button\" href=\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#more-36235\" aria-label=\"Read more about MongoDB Replica Set with Master-Slave Replication and Automated Failover\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":36415,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1702,1236,4,21,13],"tags":[41,1677,468,605],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>MongoDB Replica Set with Master-Slave Replication and Automated Failover<\/title>\n<meta name=\"description\" content=\"Looking for a quick guide to MongoDB Replica Set with Master-Slave Replication and Automated Failover. Click here four our tutorial.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MongoDB Replica Set with Master-Slave Replication and Automated Failover\" \/>\n<meta property=\"og:description\" content=\"Looking for a quick guide to MongoDB Replica Set with Master-Slave Replication and Automated Failover. Click here four our tutorial.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/\" \/>\n<meta property=\"og:site_name\" content=\"RoseHosting\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/RoseHosting\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/rosehosting.helpdesk\" \/>\n<meta property=\"article:published_time\" content=\"2021-04-28T16:48:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-06T11:10:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"742\" \/>\n\t<meta property=\"og:image:height\" content=\"372\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Jeff Wilson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"MongoDB Replica Set with Master-Slave Replication and Automated Failover\" \/>\n<meta name=\"twitter:description\" content=\"Looking for a quick guide to MongoDB Replica Set with Master-Slave Replication and Automated Failover. Click here four our tutorial.\" \/>\n<meta name=\"twitter:creator\" content=\"@rosehosting\" \/>\n<meta name=\"twitter:site\" content=\"@rosehosting\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jeff Wilson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"14 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/\"},\"author\":{\"name\":\"Jeff Wilson\",\"@id\":\"https:\/\/www.rosehosting.com\/blog\/#\/schema\/person\/7ce77a842fa6a9a7f8efa186f2353713\"},\"headline\":\"MongoDB Replica Set with Master-Slave Replication and Automated Failover\",\"datePublished\":\"2021-04-28T16:48:00+00:00\",\"dateModified\":\"2024-03-06T11:10:22+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/\"},\"wordCount\":1326,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.rosehosting.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover.jpg\",\"keywords\":[\"database\",\"guide\",\"Mongo\",\"mongodb\"],\"articleSection\":[\"Databases\",\"Guides\",\"RoseHosting Platform\",\"Tips and Tricks\",\"Tutorials\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/\",\"url\":\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/\",\"name\":\"MongoDB Replica Set with Master-Slave Replication and Automated Failover\",\"isPartOf\":{\"@id\":\"https:\/\/www.rosehosting.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover.jpg\",\"datePublished\":\"2021-04-28T16:48:00+00:00\",\"dateModified\":\"2024-03-06T11:10:22+00:00\",\"description\":\"Looking for a quick guide to MongoDB Replica Set with Master-Slave Replication and Automated Failover. Click here four our tutorial.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#primaryimage\",\"url\":\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover.jpg\",\"contentUrl\":\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover.jpg\",\"width\":742,\"height\":372},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.rosehosting.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"MongoDB Replica Set with Master-Slave Replication and Automated Failover\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.rosehosting.com\/blog\/#website\",\"url\":\"https:\/\/www.rosehosting.com\/blog\/\",\"name\":\"RoseHosting\",\"description\":\"Premium Linux Tutorials Since 2001\",\"publisher\":{\"@id\":\"https:\/\/www.rosehosting.com\/blog\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.rosehosting.com\/blog\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.rosehosting.com\/blog\/#organization\",\"name\":\"RoseHosting\",\"url\":\"https:\/\/www.rosehosting.com\/blog\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.rosehosting.com\/blog\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2022\/03\/android-chrome-192x192-1.png\",\"contentUrl\":\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2022\/03\/android-chrome-192x192-1.png\",\"width\":192,\"height\":192,\"caption\":\"RoseHosting\"},\"image\":{\"@id\":\"https:\/\/www.rosehosting.com\/blog\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/RoseHosting\",\"https:\/\/x.com\/rosehosting\",\"https:\/\/www.linkedin.com\/in\/rosehosting\/\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.rosehosting.com\/blog\/#\/schema\/person\/7ce77a842fa6a9a7f8efa186f2353713\",\"name\":\"Jeff Wilson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.rosehosting.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/09271207587f897ab46faaed9b355252?s=96&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/09271207587f897ab46faaed9b355252?s=96&r=g\",\"caption\":\"Jeff Wilson\"},\"description\":\"An experienced Linux veteran with many years of experience. Helping other Linux admins with frequent Linux and business-related blog posts on the RoseHosting blog. Techie by choice. Loving nature and travel. Happily married and father of two lovely children.\",\"sameAs\":[\"https:\/\/www.rosehosting.com\",\"https:\/\/www.facebook.com\/rosehosting.helpdesk\"],\"url\":\"https:\/\/www.rosehosting.com\/blog\/author\/jwilson\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"MongoDB Replica Set with Master-Slave Replication and Automated Failover","description":"Looking for a quick guide to MongoDB Replica Set with Master-Slave Replication and Automated Failover. Click here four our tutorial.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/","og_locale":"en_US","og_type":"article","og_title":"MongoDB Replica Set with Master-Slave Replication and Automated Failover","og_description":"Looking for a quick guide to MongoDB Replica Set with Master-Slave Replication and Automated Failover. Click here four our tutorial.","og_url":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/","og_site_name":"RoseHosting","article_publisher":"https:\/\/www.facebook.com\/RoseHosting","article_author":"https:\/\/www.facebook.com\/rosehosting.helpdesk","article_published_time":"2021-04-28T16:48:00+00:00","article_modified_time":"2024-03-06T11:10:22+00:00","og_image":[{"width":742,"height":372,"url":"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover.jpg","type":"image\/jpeg"}],"author":"Jeff Wilson","twitter_card":"summary_large_image","twitter_title":"MongoDB Replica Set with Master-Slave Replication and Automated Failover","twitter_description":"Looking for a quick guide to MongoDB Replica Set with Master-Slave Replication and Automated Failover. Click here four our tutorial.","twitter_creator":"@rosehosting","twitter_site":"@rosehosting","twitter_misc":{"Written by":"Jeff Wilson","Est. reading time":"14 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#article","isPartOf":{"@id":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/"},"author":{"name":"Jeff Wilson","@id":"https:\/\/www.rosehosting.com\/blog\/#\/schema\/person\/7ce77a842fa6a9a7f8efa186f2353713"},"headline":"MongoDB Replica Set with Master-Slave Replication and Automated Failover","datePublished":"2021-04-28T16:48:00+00:00","dateModified":"2024-03-06T11:10:22+00:00","mainEntityOfPage":{"@id":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/"},"wordCount":1326,"commentCount":0,"publisher":{"@id":"https:\/\/www.rosehosting.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#primaryimage"},"thumbnailUrl":"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover.jpg","keywords":["database","guide","Mongo","mongodb"],"articleSection":["Databases","Guides","RoseHosting Platform","Tips and Tricks","Tutorials"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/","url":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/","name":"MongoDB Replica Set with Master-Slave Replication and Automated Failover","isPartOf":{"@id":"https:\/\/www.rosehosting.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#primaryimage"},"image":{"@id":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#primaryimage"},"thumbnailUrl":"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover.jpg","datePublished":"2021-04-28T16:48:00+00:00","dateModified":"2024-03-06T11:10:22+00:00","description":"Looking for a quick guide to MongoDB Replica Set with Master-Slave Replication and Automated Failover. Click here four our tutorial.","breadcrumb":{"@id":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#primaryimage","url":"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover.jpg","contentUrl":"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2021\/03\/mongodb-replica-set-with-master-slave-replication-and-automated-failover.jpg","width":742,"height":372},{"@type":"BreadcrumbList","@id":"https:\/\/www.rosehosting.com\/blog\/mongodb-replica-set-with-master-slave-replication-and-automated-failover\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.rosehosting.com\/blog\/"},{"@type":"ListItem","position":2,"name":"MongoDB Replica Set with Master-Slave Replication and Automated Failover"}]},{"@type":"WebSite","@id":"https:\/\/www.rosehosting.com\/blog\/#website","url":"https:\/\/www.rosehosting.com\/blog\/","name":"RoseHosting","description":"Premium Linux Tutorials Since 2001","publisher":{"@id":"https:\/\/www.rosehosting.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.rosehosting.com\/blog\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.rosehosting.com\/blog\/#organization","name":"RoseHosting","url":"https:\/\/www.rosehosting.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.rosehosting.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2022\/03\/android-chrome-192x192-1.png","contentUrl":"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2022\/03\/android-chrome-192x192-1.png","width":192,"height":192,"caption":"RoseHosting"},"image":{"@id":"https:\/\/www.rosehosting.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/RoseHosting","https:\/\/x.com\/rosehosting","https:\/\/www.linkedin.com\/in\/rosehosting\/"]},{"@type":"Person","@id":"https:\/\/www.rosehosting.com\/blog\/#\/schema\/person\/7ce77a842fa6a9a7f8efa186f2353713","name":"Jeff Wilson","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.rosehosting.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/09271207587f897ab46faaed9b355252?s=96&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/09271207587f897ab46faaed9b355252?s=96&r=g","caption":"Jeff Wilson"},"description":"An experienced Linux veteran with many years of experience. Helping other Linux admins with frequent Linux and business-related blog posts on the RoseHosting blog. Techie by choice. Loving nature and travel. Happily married and father of two lovely children.","sameAs":["https:\/\/www.rosehosting.com","https:\/\/www.facebook.com\/rosehosting.helpdesk"],"url":"https:\/\/www.rosehosting.com\/blog\/author\/jwilson\/"}]}},"_links":{"self":[{"href":"https:\/\/www.rosehosting.com\/blog\/wp-json\/wp\/v2\/posts\/36235"}],"collection":[{"href":"https:\/\/www.rosehosting.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rosehosting.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rosehosting.com\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rosehosting.com\/blog\/wp-json\/wp\/v2\/comments?post=36235"}],"version-history":[{"count":39,"href":"https:\/\/www.rosehosting.com\/blog\/wp-json\/wp\/v2\/posts\/36235\/revisions"}],"predecessor-version":[{"id":48215,"href":"https:\/\/www.rosehosting.com\/blog\/wp-json\/wp\/v2\/posts\/36235\/revisions\/48215"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rosehosting.com\/blog\/wp-json\/wp\/v2\/media\/36415"}],"wp:attachment":[{"href":"https:\/\/www.rosehosting.com\/blog\/wp-json\/wp\/v2\/media?parent=36235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rosehosting.com\/blog\/wp-json\/wp\/v2\/categories?post=36235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rosehosting.com\/blog\/wp-json\/wp\/v2\/tags?post=36235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}