On the server, docker can help us quickly set up the lnmp running environment, and any operation in the container has no effect on the host.This paper uses docker to create multiple containers (mysql,php-fpm,nginx) to set up lnmp running environment.

step

1. Pull mirror

//mysql mirror, version 5.7 selected here
docker pull image mysql:5.7

//php-fpm mirror, version 7.3 used here
doker pull php:7.3-fpm

//nginx mirror, using version 1.17.5 here
docker pull nginx:1.17.5

//View all mirrors
[root@hzj ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
mysql               5.7                 d5cea958d330        4 days ago          440MB
php                 7.3-fpm             c926fc177576        4 days ago          398MB
redis               latest              44d36d2c2374        3 weeks ago         98.2MB
nginx               1.17.5              540a289bab6c        4 months ago        126MB

2. Create mysql container

sudo docker run \
--name mysql5.7 \
--restart always \
--privileged=true \
-p 4306:3306 \
-v /opt/mysql/config/mysqld.cnf:/etc/mysql/mysql.conf.d/mysqld.cnf \
-v /var/mysql/data:/var/lib/mysql \
-e MYSQL_USER="user_name" \
-e MYSQL_PASSWORD="user_password" \
-e MYSQL_ROOT_PASSWORD="root_password" \
-d mysql:5.7

Parameter description:

• - name: Specify the container name
• - restart always: turn on startup
• - privileged=tree: Give container operation privileges
• -p:4306:3306:port 336 of host 4306 port mapping container
• -v dir1:dir2: host dir1 maps to container dir2 directory
• -e MYSQL_USER:Set User Name
• -e MYSQL_PASSWORD:Set Password
• -e MYSQL_ROOT_PASSWORD: Set root user password
• -d:Background running

Be careful

• mysql's data must be mounted locally to prevent data loss after container deletion.
• my.cnf configuration files can also be mounted locally.

3. Create php-fpm container

sudo docker run \
--name php-fpm \
--link=mysql:mysql \
-d -p 9000:9000 \
-v /home/wwwroot:/home/wwwroot \
-v /home/wwwlogs:/home/wwwlogs \
-v /tmp:/tmp \
-v /etc/localtime:/etc/localtime\
--privileged=true \
php:7.3-fpm

Parameter description:

• - link=mysql:mysql2:Connect the MySQL container with the alias mysql2 inside
• -v/home/wwwroot:/home/wwwroot: Code file mapped to container
• -v/etc/localtime:/etc/localtime:container and host time synchronization

4. Create ngixn container

sudo docker run 
--name nginx \ 
--link=mysql:mysql \
--link=php:phpfpm \
-d -p 80:80 \
-v /home/wwwroot:/home/wwwroot \
-v /tmp:/tmp \
-v /var/log/nginx:/var/log/nginx  \
nginx:1.17.5

Modify Profile
Since nginx and php-fpm are not in the same container here, the site configuration file needs to be modified to forward requests to the php-fpm container.

Major modifications:

server_name test.com;//domain name

location / {
        root   /home/wwwroot;//php code store directory
        index  index.php index.html index.htm;//First page file index.php
	    #try_files $uri $uri/ /index.php?$query_string;
    }
location ~ \.php$ {
        root           html;
        fastcgi_pass   php:9000;//Forward a request using either the php-fpm container name or an alias. The ports are consistent or the request cannot be processed.
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  /home/wwwroot/$fastcgi_script_name;//Previously written code storage directory in php-fpm container
        include        fastcgi_params;
    }

• After modifying the configuration file, use the service nginx configtest command to check for syntax errors.Once confirmed, reload the configuration file using service nginx reload

At this point, the php-fpm environment has been set up.