docker快速上手
安装配置
# 移除旧版本
sudo dnf remove docker \docker-client \docker-client-latest \docker-common \docker-latest \docker-latest-logrotate \docker-logrotate \docker-engine
# 配置yum源
sudo yum install -y yum-utils
sudo yum-config-manager \
--add-repo \
http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# 安装最新docker
sudo yum install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
# 启动 docker
sudo systemctl enable --now docker
# 设置开机启动
systemctl enable docker
# 配置加速 网上找最新的
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{"registry-mirrors":["https://mirror.ccs.tencentyun.com"]
}
EOF
# 重启进程
sudo systemctl daemon-reload
# 重启docker
sudo systemctl restart docker
命令
#---------- 镜像
# 检索（镜像） https://hub.docker.com 慢的话直接下载
docker search
# 下载（镜像）
docker pull
# 查看已下载的镜像列表
docker images
# 删除某一个镜像
docker rmi
#------------ 容器
# 运行 *
docker run
# 查看
docker ps
# 停止
docker stop
# 启动
docker start
# 重启
docker restart
# 状态
docker status
# 日志
docker logs
# 进入
docker exec
# 删除
docker rm
# 批量删除
docker rm -f $(docker ps -aq)
#------------ 分享
# 提交
docker commit
# 保持
docker save
# 加载
docker load
# 登录
docker login
# 命名
docker tag
# 推送
docker push
#------------- 存储
# 目录挂载
docker run -v /[path]:/[path]
# 卷映射 docker 将卷统一存放在 /var/lib/docker/volumes/
docker run -v [name]:/[path]
#-------------网络
# 创建自定义网络
docker network create [name]
# 容器内访问其他容器
http://[容器名]:[容器内端口]
redis主从同步集群
# 主机
docker run -d -p 6379:6379 \
-v /var/lib/docker/volumes/redis-master-data:/bitnami/redis/data \
-e REDIS_REPLICATION_MODE=master \
-e REDIS_PASSWORD=123456 \
--network mynet \
--name redis-master \
bitnami/redis
# 从机
docker run -d -p 6380:6379 \
-v /var/lib/docker/volumes/redis-slave01-data:/bitnami/redis/data \
-e REDIS_REPLICATION_MODE=slave \
-e REDIS_MASTER_HOST=redis-master \
-e REDIS_MASTER_PORT_NUMBER=6379 \
-e REDIS_MASTER_PASSWORD=123456 \
-e REDIS_PASSWORD=123456 \
--network mynet \
--name redis-slave01 \
bitnami/redis
安装MySQL
docker run -d -p 3306:3306 \
-v /var/lib/docker/volumes/mysql-conf:/etc/mysql/conf.d \
-v mysql-data:/var/lib/mysql \
-e MYSQL_ROOT_PASSWORD=123456 \
--name mysql \
mysql:8.0.37-debian
安装nginx
docker run -d -p 80:80 \
-v nginx-conf:/etc/nginx \
-v /var/lib/docker/volumes/nginx-data:/usr/share/nginx/html \
--name nginx \
nginx
docker compose
name: app
services:nginx:container_name: nginximage: nginxports:- 80:80volumes:- nginx-conf:/etc/nginx- /var/lib/docker/volumes/nginx-data:/usr/share/nginx/htmlrestart: alwaysnetworks:- app-netredis-master:container_name: redis-masterimage: bitnami/redisports:- 6379:6379volumes:- /var/lib/docker/volumes/redis-master-data:/bitnami/redis/dataenvironment:- REDIS_REPLICATION_MODE=master- REDIS_PASSWORD=123456restart: alwaysnetworks:- app-netredis-slave01:container_name: redis-slave01image: bitnami/redisports:- 6380:6379volumes:- /var/lib/docker/volumes/redis-slave01-data:/bitnami/redis/dataenvironment:- REDIS_REPLICATION_MODE=slave- REDIS_MASTER_HOST=redis-master- REDIS_MASTER_PORT_NUMBER=6379- REDIS_MASTER_PASSWORD=123456- REDIS_PASSWORD=123456restart: alwaysnetworks:- app-netmysql:container_name: mysqlimage: mysql:8.0.37-debianports:- 3306:3306environment:- MYSQL_ROOT_PASSWORD=123456volumes:- mysql-conf:/etc/mysql/conf.d- /var/lib/docker/volumes/mysql-data:/var/lib/mysqlrestart: alwaysnetworks:- app-netvolumes:mysql-conf:nginx-conf:
networks:app-net:
compose 命令
# 上线（后台）
docker compose up -d
# 下线
docker compose down
# 启动
docker compose start [..appName]
# 停止
docker compose stop [..appName]
# 扩容
docker compose scale[appName]=[num]