docker-composer安装

docker-composer

yum install docker
#安装pip
yum -y install epel-release
yum install python-pip
pip install --upgrade pip
pip install docker-compose
ln -s /usr/bin/docker-compose /usr/local/bin/
docker-composer version
systemctl start docker
docker-compose up
#*一但关联了软件的配置文件至宿主机，镜像中可能被删除
#docker-compose中注释可能会因为编码（gb/utf8）失效 pip安装则不会存在该问题
#需要将nginx/mysql/php配置文件提前copy出来 否则容器会报错一直重启
#查看所有容器ip
#docker inspect --format='{{.Name}} - {{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' $(docker ps -aq)

docker-composer.yaml

version: '3'
networks:
lnmp-net:
driver: bridge
services:
mariadb:
container_name: mariadb
image: mariadb:10.4
ports:
- 3306:3306
environment:
MYSQL_ROOT_PASSWORD: '@powerglq'
volumes:
- /docker-service/mariadb/db:/var/lib/mysql
- /docker-service/mariadb/conf:/etc/mysql
- /docker-service/mariadb/log:/var/log/mariadb
restart: always
networks:
- lnmp-net
nginx:
container_name: nginx
image: nginx:stable
ports:
- 80:80
- 443:443
volumes:
- /docker-service/www:/usr/share/nginx/html
- /docker-service/nginx/nginx:/etc/nginx
- /docker-service/nginx/log:/var/log/nginx
depends_on:
- mariadb
- redis
- php
environment:
- TZ=Asia/Shanghai
restart: always
networks:
- lnmp-net
php:
container_name: php
image: php:7.3-fpm
volumes:
- /docker-service/www:/usr/share/nginx/html
- /docker-service/php/php:/usr/local/etc
- /docker-service/php/log:/usr/local/var/log
stdin_open: true
tty: true
environment:
- TZ=Asia/Shanghai
restart: always
networks:
- lnmp-net
redis:
container_name: redis
image: redis:5.0.7
ports:
- 6379:6379
volumes:
- /docker-service/redis/db:/var/lib/redis
- /docker-service/redis/log:/var/log/redis
- /docker-service/redis/redis:/usr/local/bin
command: /bin/bash -c "redis-server /usr/local/bin/redis.conf"
environment:
- TZ=Asia/Shanghai
restart: always
networks:
- lnmp-net

修改容器映射端口

宿主机/var/lib/docker/containers/容器名称/hostconfig.json 修改hostport

nginx
nginx/conf.d/default.conf配置

location ~ \.php$ {
root           /usr/share/nginx/html;
fastcgi_pass   php:9000;
fastcgi_index  index.php;
fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
include        fastcgi_params;
}

php

设置php.ini

mv /docker-service/php/php/php/php.ini-production /docker-service/php/php/php
docker-php添加扩展
docker exec -it 999 /bin/bash
docker-php-ext-install pdo_mysql
#pecl install igbinary
#在php.ini添加 extension=igbinary.so
pecl install redis && docker-php-ext-enable redis
询问是否开启扩展支持 输入no
在php.ini添加 extension=/usr/local/lib/php/extensions/no-debug-non-zts-20180731/igbinary.so
在php.ini添加 extension=/usr/local/lib/php/extensions/no-debug-non-zts-20180731/redis.so

mariadb

配置文件位置
/etc/mysql/my.cnf 数据库配置文件

查看端口命令 show global variables like ‘port’;
/etc/mysql/conf.d/docker.cnf 可用于忘记密码

忘记密码
docker cp mariadb:/etc/mysql/conf.d/docker.cnf ./docker.cnf

在docker.cnf添加skip-grant-tables
docker cp ./docker.cnf mariadb:/etc/mysql/conf.d/docker.cnf

登录mariadb mysql -uroot -p 无密码登录

flush privileges;
alter user 'root'@'localhost' identified by '123456';
flush privileges;
在docker.cnf删除skip-grant-tables
docker-compose restart mariadb

主主配置（双主）

主机/从机分别在配置文件my.cnf中添加：

server-id=145 ##或者147不同主机的id唯一标识   docker每次重启可能从机都需要修改
log_bin =mysql-bin
relay-log = relay-mysql #开启二进制日志
relay-log-index =relay-mysql.index #开启中继日志
log_slave_updates=on
auto-increment-increment = 2
auto-increment-offset = 1 #从1开始 或者2开始 为避免id冲突 两台主机的起步要不同

在主机从机添加互访同步账号 分别执行

GRANT REPLICATION SLAVE ON *.* to 'slave'@'%' identified by '000000';

分别执行

stop slave; 
reset master;
reset slave;
show master status;

主机执行

change master to master_host='172.31.0.5',master_port=3306,master_user='slave',master_password='000000',master_log_file='mariadb-slave-bin.000001',master_log_pos=336;

从机执行

change master to master_host='172.31.0.2',master_port=3306,master_user='slave',master_password='000000',master_log_file='mariadb-master-bin.000001',master_log_pos=337;

分别执行

START SLAVE;

查看连接状态

show slave status \G;