1、在Contos7上安装docker

1 卸载系统之前的docker
sudo yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine

2 设置存储库
sudo yum install -y yum-utils
sudo yum-config-manager \
—add-repo \
https://download.docker.com/linux/centos/docker-ce.repo

3 安装DOCKER引擎
sudo yum install docker-ce docker-ce-cli containerd.io

4 启动Docker.
sudo systemctl start docker

5 配置镜像加速
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-‘EOF’
{
“registry-mirrors”: [“https://chqac97z.mirror.aliyuncs.com“]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker
[

](https://blog.csdn.net/unique_perfect/article/details/111392634)

2、docker安装MySql

[root@hadoop-104 module]# docker pull mysql:5.7
5.7: Pulling from library/mysql
123275d6e508: Already exists 
27cddf5c7140: Pull complete 
c17d442e14c9: Pull complete 
2eb72ffed068: Pull complete 
d4aa125eb616: Pull complete 
52560afb169c: Pull complete 
68190f37a1d2: Pull complete 
3fd1dc6e2990: Pull complete 
85a79b83df29: Pull complete 
35e0b437fe88: Pull complete 
992f6a10268c: Pull complete 
Digest: sha256:82b72085b2fcff073a6616b84c7c3bcbb36e2d13af838cec11a9ed1d0b183f5e
Status: Downloaded newer image for mysql:5.7
docker.io/library/mysql:5.7

查看镜像

[root@hadoop-104 module]# docker images
REPOSITORY  TAG    IMAGE ID     CREATED       SIZE
mysql       5.7    f5829c0eee9e 2 hours ago   455MB
[root@hadoop-104 module]#

启动mysql

sudo docker run -p 3306:3306 --name mysql \
-v /mydata/mysql/log:/var/log/mysql \
-v /mydata/mysql/data:/var/lib/mysql \
-v /mydata/mysql/conf:/etc/mysql \
-e MYSQL_ROOT_PASSWORD=root \
-d mysql:5.7

修改配置

[root@hadoop-104 conf]# pwd
/mydata/mysql/conf
[root@hadoop-104 conf]# cat my.cnf
[client]
default-character-set=utf8
[mysql]
default-character-set=utf8
[mysqld]
init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake
skip-name-resolve
[root@hadoop-104 conf]# 
[root@hadoop-104 conf]# docker restart mysql
mysql
[root@hadoop-104 conf]#

进入容器查看配置

[root@hadoop-104 conf]# docker exec -it mysql /bin/bash
root@b3a74e031bd7:/# whereis mysql
mysql: /usr/bin/mysql /usr/lib/mysql /etc/mysql /usr/share/mysql
root@b3a74e031bd7:/# ls /etc/mysql 
my.cnf
root@b3a74e031bd7:/# cat /etc/mysql/my.cnf 
[client]
default-character-set=utf8
[mysql]
default-character-set=utf8
[mysqld]
init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake
skip-name-resolve
root@b3a74e031bd7:/#

设置启动docker时，即运行MySQL

[root@hadoop-104 ~]# docker update mysql --restart=always
mysql
[root@hadoop-104 ~]#

3、docker安装redis

下载docker

[root@hadoop-104 ~]# docker pull redis
Using default tag: latest
latest: Pulling from library/redis
123275d6e508: Already exists 
f2edbd6a658e: Pull complete 
66960bede47c: Pull complete 
79dc0b596c90: Pull complete 
de36df38e0b6: Pull complete 
602cd484ff92: Pull complete 
Digest: sha256:1d0b903e3770c2c3c79961b73a53e963f4fd4b2674c2c4911472e8a054cb5728
Status: Downloaded newer image for redis:latest
docker.io/library/redis:latest

启动docker

[root@hadoop-104 ~]# mkdir -p /mydata/redis/conf
[root@hadoop-104 ~]# touch /mydata/redis/conf/redis.conf
[root@hadoop-104 ~]# echo "appendonly yes"  >> /mydata/redis/conf/redis.conf
[root@hadoop-104 ~]# docker run -p 6400:6400 --name redis -v /mydata/redis/data:/data \
> -v /mydata/redis/conf/redis.conf:/etc/redis/redis.conf \
> -d redis redis-server /etc/redis/redis.conf
ce7ae709711986e3f90c9278b284fe6f51f1c1102ba05f3692f0e934ceca1565
[root@hadoop-104 ~]#

连接到docker的redis

[root@hadoop-104 ~]# docker exec -it redis redis-cli
127.0.0.1:6379> set key1 v1
OK
127.0.0.1:6379> get key1
"v1"
127.0.0.1:6379>

设置redis容器在docker启动时启动

[root@hadoop-104 ~]# docker update redis --restart=always
redis
[root@hadoop-104 ~]#