docker部署MySQL、Redis和Nginx

一、MySQL的部署

1. 搜索MySQL的镜像

   root@localhost ~]# docker search mysql
   INDEX       NAME                                        DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
   docker.io   docker.io/mysql                             MySQL is a widely used, open-source relati...   9802      [OK]       
   docker.io   docker.io/mariadb                           MariaDB is a community-developed fork of M...   3576      [OK]       
   docker.io   docker.io/mysql/mysql-server                Optimized MySQL Server Docker images. Crea...   718                  [OK]
   docker.io   docker.io/percona                           Percona Server is a fork of the MySQL rela...   499       [OK]       
   docker.io   docker.io/centos/mysql-57-centos7           MySQL 5.7 SQL database server                   79                   
   

   第一个mysql是MySQL的最新版本，当前的MySQL的最新版本是8.0.21。如果你需要创建MySQL的5.7版本的话，请使用centos/mysql-57-centos7。

2. 创建容器

   docker run -di --name=mysql -p 3306:3306 -e MYSQL_ROOT_PASSWORD=root mysql
   

   -p 代表端口映射，格式：[宿主机端口]:[容器端口]。把宿主机的端口映射到容器的端口上。
   -e 代表添加环境变量MYSQL_ROOT_PASSWORD是root用户的登陆密码。
   注：5.7版本中，如果是在容器中使用root登录的话，那么其密码为空。远程登录的密码即为刚刚设置的密码。

   实例如下：

   [root@localhost ~]# docker run -di --name=mysql -p 3306:3306 -e MYSQL_ROOT_PASSWORD=root mysql
   Unable to find image 'mysql:latest' locally
   Trying to pull repository docker.io/library/mysql ... 
   latest: Pulling from docker.io/library/mysql
   6ec8c9369e08: Pull complete 
   177e5de89054: Pull complete 
   ab6ccb86eb40: Pull complete 
   e1ee78841235: Pull complete 
   09cd86ccee56: Pull complete 
   78bea0594a44: Pull complete 
   caf5f529ae89: Pull complete 
   cf0fc09f046d: Pull complete 
   4ccd5b05a8f6: Pull complete 
   76d29d8de5d4: Pull complete 
   8077a91f5d16: Pull complete 
   922753e827ec: Pull complete 
   Digest: sha256:fb6a6a26111ba75f9e8487db639bc5721d4431beba4cd668a4e922b8f8b14acc
   Status: Downloaded newer image for docker.io/mysql:latest
   a3bd85b47386ab160ba20e738b42304d1f8d384f6cb473232dcdf26e69f92a74
   

3. 操作MySQL容器
   进入容器

   docker exec -it mysql bash
   

   登录MySQL

   mysql -uroot -p
   

   实例

   [root@localhost ~]# docker exec -it mysql bash
   root@a3bd85b47386:/# mysql -uroot -p
   Enter password: 
   Welcome to the MySQL monitor.  Commands end with ; or \g.
   Your MySQL connection id is 10
   Server version: 8.0.21 MySQL Community Server - GPL
   
   Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
   
   Oracle is a registered trademark of Oracle Corporation and/or its
   affiliates. Other names may be trademarks of their respective
   owners.
   
   Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
   
   mysql> 
   

二、Redis部署

1. 拉取镜像

   docker pull redis
   

   实例：

   [root@localhost ~]# docker pull redis
   Using default tag: latest
   Trying to pull repository docker.io/library/redis ... 
   latest: Pulling from docker.io/library/redis
   6ec8c9369e08: Already exists 
   efe6cceb88f8: Pull complete 
   cdb6bd1ce7c5: Pull complete 
   9d80498f79fe: Pull complete 
   b7cd40c9247b: Pull complete 
   96403647fb55: Pull complete 
   Digest: sha256:d86d6739fab2eaf590cfa51eccf1e9779677bd2502894579bcf3f80cb37b18d4
   Status: Downloaded newer image for docker.io/redis:latest
   

2. 创建容器

   docker run -di --name=myredis -p 6379:6379 redis
   

   实例：

   [root@localhost ~]# docker run -di --name=myredis -p 6379:6379 redis
   5a8b5c13284bdc17a6ef9ccd40e53040657cc3deaa498a1419a114177869f65f
   

3. 操作Redis容器

   # 1.进入容器
   docker exec -it myredis /bin/bash
   # 2.进入redis的安装目录
   cd /usr/local/bin
   # 3.连接redis
   ./redis-cli
   

   实例：

   [root@localhost ~]# docker run -di --name=myredis -p 6379:6379 redis
   5a8b5c13284bdc17a6ef9ccd40e53040657cc3deaa498a1419a114177869f65f
   [root@localhost ~]# docker exec -it myredis bash
   root@5a8b5c13284b:/data# cd /usr/local/bin
   root@5a8b5c13284b:/usr/local/bin# ./redis-cli 
   127.0.0.1:6379> ping
   PONG
   

   这里能正常ping通，也可以使用远程的redis连接方式，连接端口是6379。

三、Nginx的部署

1. 拉取镜像

   docker pull nginx
   

2. 创建容器

   docker run -di --name=mynginx -p 80:80 nginx