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This article mainly introduces how to install Nginx in centos, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

1. Introduction of Nginx service

Nginx is a high-performance HTTP Server and agent software with high concurrency and low resource consumption. It is also an excellent proxy, load balancing and caching server. It can run on multiple platforms.

Official website: http://www.nginx.org

2. The characteristics of Nginx

Web server

High-performance WEB server software, compared with Apache, it supports more concurrent connections, takes up less server resources, and is more efficient.

Reverse proxy or load balancing server

As a load balancing server, it can be used as a proxy server for services such as HTTP SERVER or DB, similar to the function of Haproxy proxy software. The proxy function of Nginx is relatively simple and less efficient than Haproxy. At the same time, it is also an excellent mail proxy service software.

Cache server

Nginx can also be used as a cache server, similar to professional caching software functions.

3. Advantages of Nginx

 high concurrency: can support 10-20 thousand or more concurrent connections (static small files)

 consumes less memory

 can do HTTP reverse proxy-- load balancing function.

 has a built-in health check function for cluster node servers, but the function is relatively weak.

 can realize the functions that caching software can achieve through the cache plug-in.

4. Installation environment

[root@localhost] # cat / etc/redhat-release CentOS release 6.5 (Final)

[root@localhost] # uname-r 2.6.32-431.el6.x86_64

5. Install the required pcre libraries

Note: this pcre library is installed to enable nginx to support HTTP Rewrite modules

Create a dedicated catalog of software tools (good specification habits must be formed in the actual production environment)

[root@localhost ~] # cd / download/tools/

Download pcre software

Wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.38.tar.gz

Compilation and installation

Tar zxf pcre-8.38.tar.gz

Cd pcre-8.38

. / configure

Make

Make install

6. Install Nginx

[root@centos6 tools] # useradd nginx-s / sbin/nologin-M

[root@centos6 tools] # wget http://nginx.org/download/nginx-1.10.1.tar.gz

[root@centos6 tools] # tar zxf nginx-1.10.1.tar.gz

[root@centos6 tools] # cd nginx-1.10.1

[root@centos6 nginx-1.10.1] #. / configure\

-- user=nginx\

-- group=nginx\

-- prefix=/application/nginx-1.10.1\

-- with-http_stub_status_module\

-- with-http_ssl_module

. / configure: error: the HTTP rewrite module requires the PCRE library.

You can either disable the module by using-without-http_rewrite_module

Option, or install the PCRE library into the system, or build the PCRE library

Statically from the source with nginx by using-- with-pcre= option.

[root@centos6 nginx-1.10.1] #. / configure

-- user=nginx\

-- group=nginx\

-- prefix=/application/nginx-1.10.1\

-- with-http_stub_status_module\

-- with-http_ssl_module\

-- with-pcre=/download/tools/pcre-8.38

Note that this is not the installed directory, but the source directory

[root@centos6 nginx-1.10.1] # make & & make install

7. Start the service

Establish a software link

[root@centos6 tools] # ln / application/nginx-1.10.1 / application/nginx

Ln: `/ application/nginx-1.10.1': hard link not allowed for directory

See, this hint is that hard links are not allowed.

[root@centos6 tools] # ln-s / application/nginx-1.10.1 / application/nginx

[root@centos6 tools] # ll / application/nginx

Lrwxrwxrwx. 1 root root 25 Nov 28 18:31 / application/nginx- > / application/nginx-1.10.1

Configuration specification startup

[root@centos6 tools] # cd / application/nginx/conf/

[root@centos6 conf] # cp.. / sbin/nginx / etc/init.d/

[root@centos6 conf] # / etc/init.d/nginx

[root@centos6 conf] # ps-ef | grep nginx

Root 151771 0 18:33? 00:00:00 nginx: master process / etc/init.d/nginx

Nginx 15178 15177 0 18:33? 00:00:00 nginx: worker process

Root 15180 2340 0 18:33 pts/0 00:00:00 grep nginx

[root@centos6 conf] # lsof-I: 80

COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME

Nginx 15177 root 6u IPv4 26905 0t0 TCP *: http (LISTEN)

Nginx 15178 nginx 6u IPv4 26905 0t0 TCP *: http (LISTEN)

Check the grammar

[root@centos6 conf] # / application/nginx/sbin/nginx-t

Nginx: the configuration file / application/nginx-1.10.1/conf/nginx.conf syntax is ok

Nginx: configuration file / application/nginx-1.10.1/conf/nginx.conf test is successful

Sometimes there will be errors.

[root@localhost nginx-1.10.1] # / application/nginx/sbin/nginx-t / application/nginx/sbin/nginx: error while loading shared libraries: libpcre.so.1: cannot open shared object file: No such file or directory

An error message indicates that the file libpcre.so.1 cannot be opened. There is no such file or directory. The reason for this prompt is that there is no path configuration for libpcre.so.1 in the / etc/ld.so.conf file of the system.

The solution is as follows:

[root@localhost nginx-1.10.1] # find /-name libpcre.so.1

/ download/tools/pcre-8.38/.libs/libpcre.so.1

/ usr/local/lib/libpcre.so.1

[root@localhost nginx-1.10.1] # vi / etc/ld.so.conf

Include ld.so.conf.d/*.conf

/ usr/local/lib

# just add this path

[root@localhost nginx-1.10.1] # ldconfig

# effective configuration

Re-check the syntax

[root@localhost nginx-1.10.1] # / application/nginx/sbin/nginx-t nginx: the configuration file / application/nginx-1.10.1/conf/nginx.conf syntax is ok nginx: configuration file / application/nginx-1.10.1/conf/nginx.conf test is successful

8. Test service installation

Seeing this interface shows that the installation is successful.

If there is an inaccessible phenomenon, you can troubleshoot it from the following aspects

1. Whether the firewall is turned off

2. Connectivity with WEB server

3. Whether selinux is disable

4. Port 80 under telnet

5. Check the error log to analyze the problem

9. Set up a simple page test

The site directory of nginx is as follows

[root@centos6 conf] # cd / application/nginx/html/

[root@centos6 html] # ll

Total 8

-rw-r--r--. 1 root root 537 Nov 28 18:29 50x.html

-rw-r--r--. 1 root root 612 Nov 28 18:29 index.html

[root@centos6 html] # cp index.html index.html.bak

[root@centos6 html] # vi index.html

Welcome to mingongge's blog!

Body {

Width: 35em

Margin: 0 auto

Font-family: Tahoma, Verdana, Arial, sans-serif

}

Welcome to mingongge's blog!

This blog is mingongge's blog!!.

For online documentation and support please refer to

Www.mingongge.com.

Commercial support is available at

Www.mingongge.com.

Welcome to mingongge's blog.

At this point, the whole process of Nginx service installation and configuration is over.

Thank you for reading this article carefully. I hope the article "how to install Nginx in centos" shared by the editor will be helpful to everyone. At the same time, I also hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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