Centos 6: Yum Install Nginx

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Step #1: Install nginx repo

Type the following wget command to install nginx yum configuration file:
# cd /tmp
CentOS Linux v6.x user type the following command:
# wget http://nginx.org/packages/centos/6/noarch/RPMS/nginx-release-centos-6-0.el6.ngx.noarch.rpm
# rpm -ivh nginx-release-centos-6-0.el6.ngx.noarch.rpm
RHEL v6.x user type the following command:
# wget http://nginx.org/packages/rhel/6/noarch/RPMS/nginx-release-rhel-6-0.el6.ngx.noarch.rpm
# rpm -ivh nginx-release-rhel-6-0.el6.ngx.noarch.rpm
Sample outputs:

warning: nginx-release-rhel-6-0.el6.ngx.noarch.rpm: Header V4 RSA/SHA1 Signature, key ID 7bd9bf62: NOKEY
Preparing...                ########################################### [100%]
   1:nginx-release-rhel     ########################################### [100%]

Step #2: Install nginx web-server

Type the following yum command to install nginx web-server:
# yum install nginx
Sample outputs:

Loaded plugins: product-id, rhnplugin, security, subscription-manager
Updating certificate-based repositories.
Unable to read consumer identity
nginx                                                    | 1.3 kB     00:00
nginx/primary                                            | 4.8 kB     00:00
nginx                                                                     33/33
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package nginx.x86_64 0:1.2.6-1.el6.ngx will be installed
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package        Arch            Version                    Repository      Size
================================================================================
Installing:
 nginx          x86_64          1.2.6-1.el6.ngx            nginx          361 k

Transaction Summary
================================================================================
Install       1 Package(s)

Total download size: 361 k
Installed size: 835 k
Is this ok [y/N]: y
Downloading Packages:
nginx-1.2.6-1.el6.ngx.x86_64.rpm                         | 361 kB     00:00
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Warning: RPMDB altered outside of yum.
  Installing : nginx-1.2.6-1.el6.ngx.x86_64                                 1/1
----------------------------------------------------------------------

Thanks for using NGINX!

Check out our community web site:
* http://nginx.org/en/support.html

If you have questions about commercial support for NGINX please visit:
* http://www.nginx.com/support.html

----------------------------------------------------------------------
Installed products updated.
  Verifying  : nginx-1.2.6-1.el6.ngx.x86_64                                 1/1

Installed:
  nginx.x86_64 0:1.2.6-1.el6.ngx

Complete!

Step #3: Turn on nginx service

Type the following command:
# chkconfig nginx on

How do I start / stop / restart nginx web-server?

Type the following commands:
# service nginx start
# service nginx stop
# service nginx restart
# service nginx status
# service nginx reload

Step #4: Configuration files

  1. Default configuration directory: /etc/nginx/
  2. Default SSL and vhost config directory: /etc/nginx/conf.d/
  3. Default log file directory: /var/log/nginx/
  4. Default document root directory: /usr/share/nginx/html
  5. Default configuration file: /etc/nginx/nginx.conf
  6. Default server access log file: /var/log/nginx/access.log
  7. Default server access log file: /var/log/nginx/error.log

To edit the nginx configuration file, enter:
# vi /etc/nginx/nginx.conf
Set or update worker_processes as follows (this must be set to CPU(s) in your system. Use the lscpu | grep '^CPU(s)' command to list the number of CPUs in the server)

worker_processes  2;

Turn on gzip support:

gzip  on;

Save and close the file. Edit the file /etc/nginx/conf.d/default.conf, enter:
# vi /etc/nginx/conf.d/default.conf
Set IP address and TCP port number:

    listen       202.54.1.1.1:80;

Set server name:

    server_name  www.cyberciti.biz;

Save and close the file. Start the server:
# service nginx start
Verify that everything is working:
# netstat -tulpn | grep :80
# ps aux | grep nginx

Firewall configuration: Open TCP port # 80

Edit the file /etc/sysconfig/iptables, enter:
# vi /etc/sysconfig/iptables
Add the following lines, ensuring that they appear before the final LOG and DROP lines for the INPUT chain to open port 80:

 
-A INPUT -m state --state NEW -p tcp --dport 80 -j ACCEPT

Save and close the file. Finally, restart the firewall:
# service iptables restart