{"id":20748,"date":"2016-11-11T07:44:22","date_gmt":"2016-11-11T13:44:22","guid":{"rendered":"https:\/\/www.rosehosting.com\/blog\/?p=20748"},"modified":"2022-06-03T03:42:32","modified_gmt":"2022-06-03T08:42:32","slug":"set-up-nginx-load-balancing","status":"publish","type":"post","link":"https:\/\/www.rosehosting.com\/blog\/set-up-nginx-load-balancing\/","title":{"rendered":"How To Setup Nginx Load Balancing"},"content":{"rendered":"<div id=\"bsf_rt_marker\"><\/div><p><img decoding=\"async\" class=\"aligncenter size-full wp-image-25677\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-1.jpg\" alt=\"Nginx Load Balancing\" width=\"1200\" height=\"600\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-1.jpg 1200w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-1-150x75.jpg 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-1-300x150.jpg 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-1-768x384.jpg 768w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-1-1024x512.jpg 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-1-860x430.jpg 860w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-1-680x340.jpg 680w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-1-500x250.jpg 500w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-1-400x200.jpg 400w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-1-200x100.jpg 200w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-1-50x25.jpg 50w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p>We&#8217;ll show you, How To Setup Nginx Load Balancing. Load balancing is a very useful technique to distribute the incoming network traffic across a number servers. With this technique you can reduce the resource usage, lower the response time and avoid server overload. In this tutorial, we will guide you through the steps of configuring Nginx load balancing on a Linux VPS.<\/p>\n<p>Nginx Load Balancing is one of the most efficient options available to achieve full application redundancy, and it is relatively easy and quick to setup. We will configure Nginx load balancing using the Round robin mechanism. This way it will forward all requests to the corresponding server included in the Nginx configuration.<\/p>\n<p>Let&#8217;s start with the installation and configuration.<\/p>\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-662ec910edbac\" 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-662ec910edbac\"  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\/set-up-nginx-load-balancing\/#1-Login-via-SSH\" title=\"1. Login via SSH\">1. Login via SSH<\/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\/set-up-nginx-load-balancing\/#2-Update-all-packages\" title=\"2. Update all packages\">2. Update all packages<\/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\/set-up-nginx-load-balancing\/#3-Install-Nginx-web-server\" title=\"3. Install Nginx web server\">3. Install Nginx web server<\/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\/set-up-nginx-load-balancing\/#4-Append-the-load-balancing-configuration\" title=\"4. Append the load balancing configuration\">4. Append the load balancing configuration<\/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\/set-up-nginx-load-balancing\/#5-Add-upstream-module-in-Nginx\" title=\"5. Add upstream module in Nginx\">5. Add upstream module in Nginx<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.rosehosting.com\/blog\/set-up-nginx-load-balancing\/#6-Restart-Nginx-server\" title=\"6. Restart Nginx server\">6. Restart Nginx server<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.rosehosting.com\/blog\/set-up-nginx-load-balancing\/#7-Weight-Balancing\" title=\"7. Weight Balancing\">7. Weight Balancing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.rosehosting.com\/blog\/set-up-nginx-load-balancing\/#8-Max-Fails\" title=\"8. Max Fails\">8. Max Fails<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.rosehosting.com\/blog\/set-up-nginx-load-balancing\/#9-IP-Hash-Balancing\" title=\"9. IP Hash Balancing\">9. IP Hash Balancing<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"1-Login-via-SSH\"><\/span>1. Login via SSH<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Login to your server as user root<\/p>\n<pre>ssh root@IP_Address<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"2-Update-all-packages\"><\/span>2. Update all packages<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>and make sure that all packages installed on it are up to date<\/p>\n<pre>apt-get update &amp;&amp; apt-get upgrade<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"3-Install-Nginx-web-server\"><\/span>3. Install Nginx web server<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>We need Nginx web server installed on the VPS. Run the following command to install Nginx<\/p>\n<pre>apt-get install nginx<\/pre>\n<p>Once it is installed, check if the web server is running<\/p>\n<pre>service nginx status\r\n\r\n\u25cf nginx.service - A high performance web server and a reverse proxy server\r\nLoaded: loaded (\/lib\/systemd\/system\/nginx.service; enabled; vendor preset: enabled)\r\nActive: active (running)<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"4-Append-the-load-balancing-configuration\"><\/span>4. Append the load balancing configuration<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Now, open your website&#8217;s Nginx configuration file with your favorite text editor<\/p>\n<pre>vim \/etc\/nginx\/sites-available\/yourdomain.com.conf<\/pre>\n<p>and append the load balancing configuration at the top of the file<\/p>\n<pre>upstream loadbalancer {\r\nserver vps1.yourdomain.com;\r\nserver vps2.yourdomain.com;\r\nserver vps3.yourdomain.com;\r\n}<\/pre>\n<p>You should have Nginx installed and listening on port 80 on all servers listed above.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"5-Add-upstream-module-in-Nginx\"><\/span>5. Add upstream module in Nginx<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Within the same configuration file yourdomain.com.conf we need to add the upstream module in the virtualhost configuration<\/p>\n<pre>server {\r\nlocation \/ {\r\nproxy_pass http:\/\/loadbalancer;\r\n}\r\n}<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"6-Restart-Nginx-server\"><\/span>6. Restart Nginx server<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Save the file and restart Nginx for the changes to take effect.<\/p>\n<pre>service nginx restart<\/pre>\n<p>This configuration will equally distribute all incoming traffic across the three servers (vps1.yourdomain.com, vps2.yourdomain.com, vps3.yourdomain.com). Nginx can be also configured to distribute the traffic more efficiently. It comes with balancing options such as weight balancing, max fails and IP hash balancing.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"7-Weight-Balancing\"><\/span>7. Weight Balancing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>We can use this option to specify the proportion of the traffic distributed to each of the servers we listed in the upstream.<\/p>\n<p>For example:<\/p>\n<pre>upstream loadbalancer {\r\nserver vps1.yourdomain.com weight=1;\r\nserver vps2.yourdomain.com weight=2;\r\nserver vps3.yourdomain.com weight=5;\r\n}<\/pre>\n<p>In this example, vps2.yourdomain.com will receive twice as much traffic compared to vps2.yourdomain.com, and vps3.yourdomain.com will receive five times more traffic than vps1.yourdomain.com.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"8-Max-Fails\"><\/span>8. Max Fails<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>If you use the default Nginx settings, it will send data to the servers even if they are down. We can use the Max fails option to prevent such cases.<\/p>\n<pre>upstream loadbalancer {\r\nserver vps1.yourdomain.com max_fails=4\u00a0 fail_timeout=20s;\r\nserver vps2.yourdomain.com weight=2;\r\nserver vps3.yourdomain.com weight=4;\r\n}<\/pre>\n<p>In the example above, Nginx will attempt to connect to vps1.yourdomain.com and if it is not responding for more than 20 seconds it will make another attempt. After four attempts vps1.yourdomain.com will be considered as down.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"9-IP-Hash-Balancing\"><\/span>9. IP Hash Balancing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>With this method, the visitors will be always sent to the same server. So, if a visitor received the content of vps1.yourdomain.com, it will be always transferred to that server unless the servers are down or inaccessible.<\/p>\n<pre>upstream loadbalancer {\r\nip_hash;\r\nserver vps1.yourdomain.com;\r\nserver vps2.yourdomain.com;\r\nserver vps3.yourdomain.com down;\r\n}<\/pre>\n<p>In this example, vps3.yourdomain.com is known to be inaccessible, and it is marked as down.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-25676\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing.jpg\" alt=\"Nginx Load Balancing\" width=\"569\" height=\"217\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing.jpg 569w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-150x57.jpg 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-300x114.jpg 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-500x191.jpg 500w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-400x153.jpg 400w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-200x76.jpg 200w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2016\/11\/Nginx-Load-Balancing-50x19.jpg 50w\" sizes=\"(max-width: 569px) 100vw, 569px\" \/><\/p>\n<hr \/>\n<p>Of course you don\u2019t have to Set up Nginx Load Balancing if you use one of our <a href=\"https:\/\/www.rosehosting.com\/nginx-hosting.html\" target=\"_blank\" rel=\"noopener noreferrer\">Nginx VPS Hosting<\/a> services, in which case you can simply ask our expert Linux admins to setup Nginx load balancing for you. They are available 24\u00d77 and will take care of your request immediately.<\/p>\n<p><span style=\"color: #ff0000;\"><strong>PS.<\/strong><\/span> If you liked this post, on\u00a0How To Set Up Nginx Load Balancing,\u00a0 please share it with your friends on the social networks using the buttons on the left or simply leave a reply below. Thanks.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We&#8217;ll show you, How To Setup Nginx Load Balancing. Load balancing is a very useful technique to distribute the incoming &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"How To Setup Nginx Load Balancing\" class=\"read-more button\" href=\"https:\/\/www.rosehosting.com\/blog\/set-up-nginx-load-balancing\/#more-20748\" aria-label=\"Read more about How To Setup Nginx Load Balancing\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":24155,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1701,13,1707],"tags":[1440,49],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How To Setup Nginx Load Balancing - RoseHosting<\/title>\n<meta name=\"description\" content=\"How To Setup Nginx Load Balancing - RoseHosting\" \/>\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\/set-up-nginx-load-balancing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How To Setup Nginx Load Balancing - 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