Use "nginx -t" to debug nginx issues. It's a known issue when nginx fails to start in Vesta due to some misconfiguation occurred by itself. nginx: [emerg] the same path name "/var/cache/nginx/xxx.es" used in /etc/nginx/conf.d/01_caching_pool.conf:2 and in /etc/nginx/conf.d/01_caching_pool.conf:3 nginx: configuration file /etc/nginx/nginx.conf test failed nginx: [emerg] the same path name "/var/cache/nginx/xxx.es" used in /etc/nginx/conf.d/01_caching_pool.conf:2 and in /etc/nginx/conf.d/01_caching_pool.conf:3 nginx: configuration file /etc/nginx/nginx.conf test failed [root@server ~]# cat /etc/nginx/conf.d/01_caching_pool.conf proxy_cache_path /var/cache/nginx/xxx.com levels=2 keys_zone=xxx.com:10m inactive=60m max_size=512m; proxy_cache_path /var/cache/nginx/xxx.es levels=2 keys_zone=xxx.es:10m inactive=60m max_size=512m; remove all the duplicate lines. And then restart nginx.

Thanks for the tutorial from DigitalOcean knowledge base again~ Introduction WordPress is the most popular CMS (content management system) used on the internet today. WordPress sites can be served using a HTTP server such as Apache or NGINX, while Apache is a great option to serve websites, many sites have moved to NGINX because of it's scalable event-driven architecture, low resources and better delivery of statics files. In this tutorial you will learn how to configure NGINX for various types of WordPress installations, including multisite configurations, rewrite rules and the use of .conf files to apply repeated configurations. Requirements In this guide, you will need sudo to install and edit files. I assume that you have gone through the initial server setup. You will need to install MySQL, PHP & NGINX. You can follow these guides to install LEMP on Ubuntu or Debian. Note that our server blocks will be different & that in this tutorial we are making PHP-FPM use a UNIX Socket. Basic NGINX Optimization Adjust NGINX Worker Processes & Connections It is often recommended to set the number of NGINX workers equal the number of processors, you can determine the number of processors using: cat /proc/cpuinfo | grep processor Open up the main NGINX configuration file: sudo nano /etc/nginx/nginx.conf Increase or decrease the number of workers depending on your system's specs: worker_processes 1; NGINX limits the number of connections that a worker can maintain at one time, if your websites have many visitors you might want to increase the limit of connections. In theory the maximum number of connections = workers *…

OpenVZ, who doesn’t know it? It’s been used (and abused) for many, many years in the hosting industry and it’s still out there going strong. Being a operation system-level virtualization technology, there are no hardware requirements in order to be able to run OpenVZ. OpenVZ creates virtualized environments known as containers. These containers are not completely isolated. For example, a process that runs on the guest is displayed on the host node’s ToP. This is one of the powers of OpenVZ: it’s simplicity and the fact that there’s hardly any overhead. A container has limits (like RAM or Disk), but those limits are not reserved anywhere. So, you can assign much more resources to container than you have available. That’s also one of OpenVZ’s weaknesses, it’s easily oversold. Like it or not, OpenVZ is a nice piece of technology and it’s perfect for creating a virtualized environment with hardly any overhead. But, what would you do with it as a non-provider?

The Test Author: kbeezie I’ll show you a very simple demonstration of Nginx’s Limit Request module and how it may be helpful to you in keeping your website up if you are hit by excessive connections or HTTP based denial-of-service attacks. For this test I’m using a copy of my site’s about page saved as about.html, and the Blitz.io service (which is free at the moment) to test the limit_req directive. First I test the page with the following command in Blitz, which will essentially ramp the number of concurrent connections from 1 to 1,075 over a period of 1 minute. The timeout has been set to 2 minutes, and the region set to California. I also set it to consider any response code other than 200 to be an error, otherwise even a 503 response will be considered a hit.

Why Run Nginx and Apache Together Both nginx and apache are powerful and effective servers. Apache currently reigns as the #1 server for websites and since its public release in 2006, nginx has taken the world by storm and is now the #2 server for active sites. The reasons for each respective server’s popularity are clear: apache’s power and nginx’s speed are well known. However, both servers do have drawbacks—apache is hard on server memory, while nginx (great at static files) needs the help of php-fpm or similar modules for dynamic content. However, one can combine the two web servers to great effect, with nginx as static web server front and apache processing the back end.

Logging in Nginx One of the easiest ways to save yourself trouble with your web server is to configure appropriate logging today. Logging information on your server gives you access to the data that will help you troubleshoot and assess situations as they arise. In this article, we will examine Nginx's logging capabilities and discover how to configure these tools to best serve your needs. In this guide, we will be using an Ubuntu 12.04 VPS as an example, but any modern distribution should function in a similar way.