Shulou(Shulou.com)05/31 Report--

This article mainly explains "Linux installation nginx instance code analysis", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let Xiaobian take you to learn "Linux installation nginx instance code analysis"!

Linux is 64-bit Centos.

profile

1. Linux installation software common methods

RPM (or pkg) installation, similar to the Windows installer, is a precompiled program.

Generic parameter compilation used, configuration parameters not optimal

Less controllable, such as custom installation of program-specific components

Usually, there are complex dependencies between installation packages, and the operation is more complicated.

Simple installation, low error rate

2. yum (or apt-get) installation, improved rpm, automatic networking download installation package, automatic dependency management

3, compile and install (the way in various linux distributions is not much different)

Strong controllability, config parameters can be optimized according to the current system environment, customized components and installation parameters

Error prone, slightly more difficult

Second, nginx compilation and installation

Check and install dependencies

yum -y install gcc pcre pcre-devel zlib zlib-devel openssl openssl-devel

2、configure

3、make && make install

The detailed steps are as follows

Step 1: download the corresponding version from (or wget directly on linux with the command download)

Step 2: Decompress tar -zxvf nginx-1.9.9.tar.gz

Step 3: Set the configuration information./ configure --prefix=/usr/local/nginx, or do not perform this step, directly default configuration

Step 4:

make compilation (the process of making is to turn source files written in various languages into executable files and various library files)

make install (make install copies the compiled executable files and library files to the appropriate location)

When configuring the information, that is, in the third step, an error occurred:

The error is: ./ configure: error: the http rewrite module requires the pcre library.

Install pcre-devel to solve problems

yum -y install pcre-devel

There may also be:

Error message: ./ configure: error: the http cache module requires md5 functions

from openssl library. you can either disable the module by using

--without-http-cache option, or install the openssl library into the system,

or build the openssl library statically from the source with nginx by using

--with-http_ssl_module --with-openssl= options.

Solution:

yum -y install openssl openssl-devel

Starting and closing nginx under linux after installation:

startup operation

The requested URL/usr/local/nginx/sbin/nginx was not found on this server.

stop operation

Stop is done by signaling the nginx process (see linux chapter for what signals are)

Step 1: Query nginx main process number

ps -ef | grep nginx

Look for the master process in the process list, and its number is the master process number.

Step 2: Send the signal

Stop NGINX:

kill -quit main process number

Quickly stop nginx:

kill -term Main process number

Forcing nginx to stop:

pkill -9 nginx

In addition, if the pid file storage path is configured in nginx.conf, the file stores the nginx main process number. If it is not specified, it is placed in the nginx logs directory. With the pid file, we do not need to query the main process number of nginx first, but send a signal directly to nginx, the command is as follows:

kill -Signal type '/usr/local/nginx/logs/nginx.pid'

graceful restart

If you change the configuration, you need to restart nginx. Do you need to close nginx first and then open it? No, you can send a signal to nginx to restart smoothly.

Smooth restart command:

kill -hup live title or process number file path

or use

/usr/local/nginx/sbin/nginx -s reload

Note that after modifying the configuration file, it is best to check whether the modified configuration file is correct, so as not to affect the stable operation of the server after restarting nginx errors. judgment

Nginx configuration is correct command is as follows:

nginx -t -c /usr/local/nginx/conf/nginx.conf

or

/usr/local/nginx/sbin/nginx -t

As shown below:

Down to configure environment variables

Add to/etc/profile:

export nginx_home=/usr/local/nginx

export path=path:path:nginx_home/sbin

Preservation,

Execute source /etc/profile to make the configuration file take effect.

Execute nginx -v, you can see the version, indicating that nginx installation is successful

At this point, I believe that everyone has a deeper understanding of "Linux installation nginx instance code analysis", may wish to actually operate it! Here is the website, more related content can enter the relevant channels for inquiry, pay attention to us, continue to learn!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.