Analysis of Nginx server installation examples under CentOS7

Installation required environment

nginx is developed in C language. It is recommended to run on Linux. Of course, you can also install the windows version. This article uses centos 7 as the installation environment.

1. gcc installation

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

yum install gcc-c++

2. pcre pcre-devel installation

pcre (perl compatible regular expressions) is a perl library, including perl compatible regular expressions library . The http module of nginx uses pcre to parse regular expressions, so the pcre library needs to be installed on Linux. pcre-devel is a secondary development library developed using pcre. nginx also requires this library. Command:

yum install -y pcre pcre-devel

3. zlib installation

The zlib library provides many compression and decompression methods. nginx uses zlib to gzip the contents of the http package. , so the zlib library needs to be installed on centos.

yum install -y zlib zlib-devel

4. openssl installation

openssl is a powerful secure socket layer cryptographic library, including major cryptographic algorithms, commonly used keys and The certificate encapsulates management functions and SSL protocols, and provides a rich set of applications for testing or other purposes.
nginx not only supports http protocol, but also supports https (that is, transmitting http over ssl protocol), so you need to install the openssl library on centos.

yum install -y openssl openssl-devel

Official website download

1. Directly download the .tar.gz installation package, address:

2. Use the wget command to download ( recommend).

wget -c https://nginx.org/download/nginx-1.10.1.tar.gz

I downloaded version 1.10.1, which is the current stable version.

Decompression

is still a direct command:

tar -zxvf nginx-1.10.1.tar.gz
cd nginx-1.10.1

Configuration

In fact, it is in nginx-1.10. In version 1, you don’t need to configure related things, the default is fine. Of course, it is also possible if you want to configure the directory yourself.

1. Use the default configuration

./configure

2. Customize the configuration (not recommended)

./configure \
--prefix=/usr/local/nginx \
--conf-path=/usr/local/nginx/conf/nginx.conf \
--pid-path=/usr/local/nginx/conf/nginx.pid \
--lock-path=/var/lock/nginx.lock \
--error-log-path=/var/log/nginx/error.log \
--http-log-path=/var/log/nginx/access.log \
--with-http_gzip_static_module \
--http-client-body-temp-path=/var/temp/nginx/client \
--http-proxy-temp-path=/var/temp/nginx/proxy \
--http-fastcgi-temp-path=/var/temp/nginx/fastcgi \
--http-uwsgi-temp-path=/var/temp/nginx/uwsgi \
--http-scgi-temp-path=/var/temp/nginx/scgi

Note: Specify the temporary file directory For /var/temp/nginx, you need to create the temp and nginx directories under /var

Compile and install

make
make install

Find the installation path:

whereis nginx

Start and stop nginx

cd /usr/local/nginx/sbin/
./nginx
./nginx -s stop
./nginx -s quit
./nginx -s reload
./nginx -s quit: The stop step in this method is to wait until the nginx process completes the task.
./nginx -s stop: This method is equivalent to first finding out the nginx process ID and then using the kill command to forcefully kill the process.

Query the nginx process:

ps aux|grep nginx

Restart nginx

1. Stop and then start (recommended):

Restarting nginx is equivalent to stopping and then starting, that is, executing the stop command first and then the start command. As follows:

./nginx -s quit
./nginx

2. Reload the configuration file:

When the ngin x configuration file nginx.conf is modified, you need to restart nginx to make the configuration take effect, use -s reload There is no need to stop ngin

./nginx -s reload

Set execution permissions:

vi /etc/rc.local

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