Shulou(Shulou.com)06/02 Report--

Method 1:

First of all, because some modules of nginx rely on some lib libraries, you must install these lib libraries before installing nginx. These dependent libraries are mainly glossy +, gcc, openssl-devel, pcre-devel and zlib-devel, so execute the following command to install.

# yum install gcc-c++

# yum install pcre pcre-devel

# yum install zlib zlib-devel

# yum install openssl openssl--devel

Install Nginx

Check to see if nginx is installed

# find-name nginx

If the system already has nginx installed, uninstall it first

# yum remove nginx

Start installing nginx

Go to your own file location and start downloading

# wget http://nginx.org/download/nginx-1.12.0.tar.gz

# tar-zxvf nginx-1.12.0.tar.gz

# cd nginx-1.12.0

#. / configure

# make

# make install

View nginx version

# / usr/local/nginx/sbin/nginx-V

Start and restart Nginx

Start:

# / usr/local/nginx/sbin/nginx

Restart

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

Stop it

# / usr/local/nginx/sbin/nginx-s stop

Stop the process

# query nginx main process number

# ps-ef | grep nginx

Stop the process

# kill-QUIT main process number

Quick stop

# kill-TERM main process number

Forced stop

# pkill-9 nginx

Test port

# netstat-na | grep 80

Add Firewall Port

# vi / etc/sysconfig/iptables

Take effect

# / etc/init.d/iptables restart

[expansion]

[root@bogon nginx-1.12.0] # netstat-anpt | grep nginx

Tcp 0 0 0.0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0 of the LISTEN 5502/nginx.

[root@bogon nginx-1.12.0] # ss-tnlp | grep 80 / / you can find that the startup user and group are nginx

LISTEN 0128 *: 80 *: * users: (("nginx", 5502), ("nginx", 5503))

4. Check the progress of nginx

[root@bogon nginx-1.12.0] # ps aux | grep nginx / / found that only one master process and one worker process have been started

Root 5502 0.0 0.1 44824 1176? Ss 22:58 0:00 nginx: master process / usr/local/nginx/sbin/nginx

Nginx 5503 0.0 0.1 45260 1760? S 22:58 0:00 nginx: worker process

Root 5544 0.0 103328 848 pts/0 S + 23:02 0:00 grep nginx

Let's take a look at the main configuration file and see what happens.

[root@bogon nginx-1.12.0] # vi / etc/nginx/nginx.conf

3 worker_processes 1; / / here, only one startup is defined in the configuration file. Let's modify it to two to see the effect.

3 worker_processes 2; / / modified

[root@bogon nginx-1.12.0] # / usr/local/nginx/sbin/nginx-s stop

[root@bogon nginx-1.12.0] # / usr/local/nginx/sbin/nginx

[root@bogon nginx-1.12.0] # ps aux | grep nginx / / after restarting the service, you can find that the worker process has become two

Root 5557 0.0 0.1 44824 1176? Ss 23:07 0:00 nginx: master process / usr/local/nginx/sbin/nginx

Nginx 5558 0.0 0.1 45260 1792? S 23:07 0:00 nginx: worker process

Nginx 5559 0.0 0.1 45260 1760? S 23:07 0:00 nginx: worker process

Root 5561 0.0 103328 848 pts/0 S + 23:07 0:00 grep nginx

2. Configure nginx

1. Configuration file composition: main configuration file nginx.conf;fastcgi configuration file fastcgi_params

2. Note: must end with a semicolon; support built-in variables (introduced by the module) and custom variables (set variable name value, using $variable name when referencing)

3. Configuration file structure:

Global configuration

Event {

. / / mainly provides the configuration of users' concurrent connections

}

Http {

. / / configure the configuration of http service, and you can define virtual host server

}

4. Explanation

Global configuration segment:

Category: configuration necessary for normal operation; configuration related to optimizing performance; configuration for debugging and locating problems.

Configuration necessary for normal operation:

User nginx nginx; / / specify the users and groups running the worker process

Pid / var/run/nginx.pid; / / specifies the pid file path of the nginx process

Worker_rlimit_nofile 1024; / / specifies the maximum number of file descriptors to be opened per worker process

Worker_rlimit_slgpending 1024; / / specifies the maximum number of signals each user can send to the worker process.

Optimize performance-related configurations:

Worker_processes 4; / / the number of worker processes opened, which is usually reduced by one of the number of physical CPU cores, which can avoid the loss caused by process switching and can also be assigned automatically by adding the auto parameter

# worker_processes auto

Worker_cpu_affinity 0001 0010 0100 1000; / bind CPU, but does not implement isolation

The worker_priority nice; range is-20 and 19. The smaller the value, the higher the priority.

[root@bogon nginx] # ps axo comm,pid,nice | grep nginx to view nice values

Nginx 5557 0

Nginx 5558 0

Nginx 5559 0

[root@bogon nginx] # lscpu / / View CPU

Configuration for debugging and locating problems:

Daemon on; / / whether to start nginx as a daemon

Whether master_process on; runs nginx in the master/worker model

Error_log / var/log/nginx/error.log; / / can be followed by a level, which can be set to debug for debugging, but must take effect at compile time using the-with-debug option

Method 2:

Automatic installation selects the fastest source

# yum install yum-fastestmirror

Install nginx

# yum install nginx

Configure the nginx source yourself

# vi / etc/yum.repos.d/nginx.repo

# nginx.repo

[nginx]

Name=nginx repo

Baseurl= http://nginx.org/packages/centos/6/$basearch/

Gpgcheck=0

Enabled=1

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