install docker
Method 1: Install docker offline
Link: https://pan.baidu.com/s/1s1lhCLlmbZk0NpFuw2sySA
Extraction code: ss9h
Method 2: Install docker automatically on the network
Docker official and domestic daocloud both provide one-click installation scripts, making Docker installation more convenient.
The official one-click installation method:
curl -fsSL https://get.docker.com | bash -s docker --mirror Aliyun
Domestic daocloud one-key installation command:
curl -sSL https://get.daocloud.io/docker | sh
Execute any of the above commands and wait patiently to complete the Docker installation.
Method 3: Manually install docker on the Internet
docker installation document
docker before uninstalling the system
sudo yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine
Install Docker-CE
to install necessary dependencies
sudo yum install -y yum-utils
sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install docker-ce docker-ce-cli containerd.io docker-compose-plugin
Verify that the installation was successful
start docker
sudo systemctl start docker
Verify that Docker Engine-Community is installed correctly by running the hello-world image.
// 拉取镜像
sudo docker pull hello-world
// 执行hello-world
sudo docker run hello-world
Set up autostart
sudo systemctl enable docker
Configure docker image acceleration
# 创建目录
sudo mkdir -p /etc/docker
# 配置镜像加速器地址
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://hl1kipsc.mirror.aliyuncs.com"]
}
EOF
# 重启docker
sudo systemctl daemon-reload
sudo systemctl restart docker
uninstall docker
stop docker
systemctl stop docker
View the docker file package installed by yum
yum list installed |grep docker
[root@localhost ~]# yum list installed |grep docker
containerd.io.x86_64 1.6.9-3.1.el7 @docker-ce-stable
docker-ce.x86_64 3:20.10.21-3.el7 @docker-ce-stable
docker-ce-cli.x86_64 1:20.10.21-3.el7 @docker-ce-stable
docker-ce-rootless-extras.x86_64 20.10.21-3.el7 @docker-ce-stable
docker-compose-plugin.x86_64 2.12.2-3.el7 @docker-ce-stable
docker-scan-plugin.x86_64 0.21.0-3.el7 @docker-ce-stable
Delete the yum installation package queried in the previous step:
yum remove containerd.io.x86_64
Delete images, containers, configuration files, etc.:
rm -rf /var/lib/docker
Verification delete successful
docker -v
docker basic commands
# 查看docker版本号
docker -v
# 启动docker
sudo systemctl start docker
# 查看docker状态
sudo systemctl status docker
# 关闭docker
sudo systemctl stop docker
# 搜索仓库镜像
docker search
# 拉取镜像：
docker pull 镜像名
# 查看正在运行的容器：
docker ps
# 查看所有容器：
docker ps -a
# 删除容器：
docker rm container_id
# 查看镜像：
docker images
# 删除镜像：
docker rmi image_id
# 启动（停止的）容器：
docker start 容器ID
# 停止容器：
docker stop 容器ID
# 重启容器：
docker restart 容器ID
# 查看容器日志
docker logs 容器id
# 重启容器
docker restart 容器名称
Install software using docker
docker install mysql
Download mysql5.7 image
# docker pull mysql:版本号
docker pull mysql:5.7
Create an instance and start
Parameter Description
-p 3306:3306: Map port 3306 of the container to port 3307 of the host Note that in order to prevent port conflicts, change it to port 3307
-v /mydata/mysql/conf:/etc/mysql: Configure the folder Mount to the host, so modifying the files under /etc/mysql is equivalent to modifying the configuration file in dockers
-v /mydata/mysql/log:/var/log/mysql: mount the log folder to the host
-v / mydata/mysql/data:/var/lib/mysql/: Mount the configuration folder to the host
-e MYSQL_ROOT_PASSWORD=root: Initialize the password of the root user as root
docker run -p 3307:3306 --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
Enter the mysql container of dockers
docker exec -it mysql /bin/bash
Check the MySQL installation location
The configuration file is under /etc/mysql
The log file is under /var/log/mysql
whereis mysql
Modify the MySQL configuration in docker in Linux
初始 /mydata/mysql/conf/ 下没有my.cnf文件， vi 命令会自动创建一个my.cnf文件
vi /mydata/mysql/conf/my.cnf
Copy the following content into the my.cnf file and save
it. skip-name-resolve is to skip domain name resolution and solve the problem of slow mysql connection
[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
Restart the mysql container
docker restart mysql
into the container again
# 进入容器
docker exec -it mysql /bin/bash
# 查看容器内配置文件挂载情况， 和linux中一样说明挂载成功
cat /etc/mysql/my.cnf
Set root remote access
Execute the following command, and use navicat to connect to the database, user name: root, password: root
# 在linux 中登录 docker中的mysql
docker exec -it mysql mysql -uroot -proot
# 设置远程访问权限
grant all privileges on *.* to 'root'@'%' identified by 'root' with grant option;
# 刷新配置
flush privileges;
Set the mysql container to start automatically at boot
sudo docker update mysql --restart=always
docker install reids
Download mirror file
docker pull redis
Create an instance and start
# 在linux中创建redis挂载文件目录
mkdir -p /mydata/redis/conf
# 创建挂载文件
touch /mydata/redis/conf/redis.conf
# 实例化一个redis容器
docker run -p 6379:6379 --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
# 在linux中连接redis客户端
docker exec -it redis redis-cli
The redis installed above is not persistent, configure redis persistence
# 编辑linux中挂载的redis配置文件
vi /mydata/redis/conf/redis.conf
# 设置redis持久化
appendonly yes
# 重启redis容器
docker restart redis
Set the redis container to start automatically at boot
sudo docker update redis --restart=always
Install redis visualization tool
Link: https://pan.baidu.com/s/1PN7WHpzDYd5cxukwLwhiiw
Extraction code: ukkc