CentOS 7.3 compile and install Nginx 1.12.2

1. Introduction to
Nginx Nginx (pronounced [engine x]) was developed for performance optimization. Its best known advantages are its stability and low system resource consumption, as well as high processing power for concurrent connections (single physical server available) Supporting 30,000 to 50,000 concurrent connections), is a high-performance HTTP and reverse proxy server, and an IMAP/POP3/SMTP proxy service.

Linux system: CentOS 7.3

2. Installation preparation
2.1 gcc installation

To install nginx, you need to compile the source code downloaded from the official website first, and compile it depends on the gcc environment. If there is no gcc environment, you need to install it:

[root@nginx ~]# yum -y install gcc-c++

2.2 pcre installation

PCRE (Perl Compatible Regular Expressions) is a Perl library that includes a perl-compatible regular expression library. Nginx’s http module uses pcre to parse regular expressions, so you need to install the pcre library on linux, a secondary development library developed with pcre. Nginx also needs this library.

[root@nginx ~]# yum -y install pcre pcre-devel

2.3 zlib installation

The zlib library provides a variety of ways to compress and decompress. nginx uses zlib to gzip the contents of the http package, so you need to install the zlib library on Centos.

[root@nginx ~]# yum -y install zlib zlib-devel

2.4 OpenSSL installation

OpenSSL is a powerful Secure Sockets Layer cryptography library that includes major cryptographic algorithms, common key and certificate encapsulation management functions, and SSL protocols, and provides a rich set of applications for testing or other purposes.
Nginx supports not only the http protocol, but also https (that is, http on the ssl protocol), so you need to install the OpenSSL library in Centos.

[root@nginx ~]# yum -y install openssl openssl-devel

3. Nginx installation

3.1 Nginx version

Download URL: https://nginx.org/en/download.html

Select the latest stable version of nginx-1.12.2
release notes:

Mainline version: Mainline is the version that Nginx is currently working on. It can be said that the development version of
Stable version: the latest stable version, the recommended version of the production environment
Legacy versions: the legacy version of the legacy version

3.2 Nginx Download

Use the wget command to download

[root@nginx ~]# wget -c https://nginx.org/download/nginx-1.12.2.tar.gz

Install without the wget command:

[root@nginx ~]# yum -y install wget

3.3 Decompression

[root@nginx ~]# tar -zxvf nginx-1.12.2.tar.gz

3.4 Installation and Configuration

3.4.1 Creating a New nginx User and Group

[root@nginx include]# groupadd nginx
[root@nginx include]# useradd -g nginx -d /home/nginx nginx
[root@nginx include]# passwd nginx

3.4.2 Third-party module installation

This article uses the third-party module sticky as an example, the version is 1., 2.5, download address:

You can download it from the Linux Community Resource Station:

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The free download address is at http://linux.linuxidc.com/

Username and password are both www.linuxidc.com

The specific download directory is compiled and installed in the /2000 data/September/27/CentOS 7.3 installation Nginx 1.12.2/

The download method can be found at http://www.linuxidc.com/Linux/2013-07/87684.htm

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Upload and unzip:

[root@nginx ~]# tar -zxvf nginx-goodies-nginx-sticky-module-ng-08a395c66e42..gz
[root@nginx ~]# mv nginx-goodies-nginx-sticky-module-ng-08a395c66e42 nginx-sticky -1.2.5

3.4.3 Installation

[root@nginx ~]# cd nginx-1.12.2
[root@nginx nginx-1.12.2]# ./configure –add-module=/root/nginx-sticky-1.2.5

Specify user, path, and module configuration (optional):

./configure \
–user=nginx –group=nginx \ #Installed user group
–prefix=/usr/local/nginx \
#Specify the installation path –with-http_stub_status_module \ #Monitor nginx state, need to be in nginx.
Conp configuration –with-http_ssl_module \ #Support HTTPS
–with-http_sub_module \ #Support URL redirection
–with-http_gzip_static_module #static compression–
add-module=/root/nginx-sticky-1.2.5 #Install sticky module

3.5 compilation

[root@nginx nginx-1.12.2]# make && make install


/root/nginx-sticky-1.2.5//ngx_http_sticky_misc.c: In the function ‘ngx_http_sticky_misc_sha1’:
/root/nginx-sticky-1.2.5//ngx_http_sticky_misc.c:176:15: Error: ‘SHA_DIGEST_LENGTH’ is not declared (first used in this function)
u_char hash[SHA_DIGEST_LENGTH];
/root/nginx-sticky-1.2.5//ngx_http_sticky_misc.c:176:15: Note: Every undeclared identifier appears in it Only one time is reported in the function
/root/nginx-sticky-1.2.5//ngx_http_sticky_misc.c:176:10: Error: Unused variable ‘hash’ [-Werror=unused-variable]
u_char hash[SHA_DIGEST_LENGTH];
/ Root/nginx-sticky-1.2.5//ngx_http_sticky_misc.c: In the function ‘ngx_http_sticky_misc_hmac_sha1’:
/root/nginx-sticky-1.2.5//ngx_http_sticky_misc.c:242:15: Error: ‘SHA_DIGEST_LENGTH’ is not declared ( Used for the first time in this function)
u_char hash[SHA_DIGEST_LENGTH];


Modify the ngx_http_sticky_misc.c file to add #include <openssl/sha.h> and #include <openssl/md5.h> modules

[root@nginx nginx-1.12.2]# sed -i ’12a #include <openssl/sha.h>’ /root/nginx-sticky-1.2.5/ngx_http_sticky_misc.c
[root@nginx nginx-1.12.2] # sed -i ’12a #include <openssl/md5.h>’ /root/nginx-sticky-1.2.5/ngx_http_sticky_misc.c


[root@nginx nginx-1.12.2]# make && make install

3.6 nginx command global execution settings

[root@nginx bin]# cd /usr/local/nginx/sbin/
[root@nginx sbin]# ln -s /usr/local/nginx/sbin/nginx /usr/local/bin/nginx

4. Nginx related commands

4.1 version view

[root@nginx ~]# nginx -v
nginx version: nginx/1.12.2

4.2 Viewing Loaded Modules

[root@nginx ~]# nginx -V
nginx version: nginx/1.12.2
built by gcc 4.8.5 20150623 ( Red Hat 4.8.5-28) (GCC)
configure arguments: –add-module=/root/nginx -sticky-1.2.5/

4.3 Start and stop command

4.3.1 Starting

[root@nginx nginx-1.12.2]# nginx

4.3.2 Stop

[root@nginx nginx-1.12.2]# nginx -s stop
[root@nginx nginx-1.12.2]# nginx -s quit

4.3.3 Dynamic loading

[root@nginx nginx-1.12.2]# ngins -s reload

4.3.4 Testing the correctness of the configuration file nginx.conf

[root@nginx ~]# nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

Nginx -s quit: This method stops the process until the nginx process finishes processing the task and stops.
Nginx -s stop: This method is equivalent to first detecting the nginx process id and then using the kill command to force the process to be killed.

Nginx -s reload: Dynamic loading. When the configuration file nginx.conf changes, the command is dynamically loaded.

4.4 Boot from boot

Edit the /etc/rc.d/rc.local file and add a line /usr/local/nginx/sbin/nginx

[root@nginx rc.d]# cd /etc/rc.d
[root@nginx rc.d]# sed -i ’13a /usr/local/nginx/sbin/nginx’ /etc/rc.d/rc. Local
[root@nginx rc.d]# chmod u+x rc.local

5. Change the default port

Edit the configuration file /usr/local/nginx/conf/nginx.conf and change the default port 80 to 81:

[root@nginx ~]# view /usr/local/nginx/conf/nginx.conf

Load configuration:

[root@nginx ~]# nginx -s reload

6. Visit Nginx

6.1 Turn off the firewall

[root@nginx ~]# firewall-cmd –state
[root@nginx ~]# systemctl stop firewalld.service
[root@nginx ~]# firewall-cmd –state
not running

6.2 Accessing Nginx


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