docker内部容器自动重启配置。

1.创建容器时没有添加参数 --restart=always ，导致的后果是：当 Docker 重启时，容器未能自动启动。

docker container update --restart=always 容器名字操作实例如下：[root@localhost mnt]# docker ps -aCONTAINER ID        IMAGE               COMMAND                  CREATED              STATUS              PORTS               NAMES46cdfc60b7a6        nginx               "nginx -g 'daemon ..."   About a minute ago   Up 42 seconds       80/tcp              n379d55a734c26        nginx               "nginx -g 'daemon ..."   About a minute ago   Up 42 seconds       80/tcp              n2f7b2206c019d        nginx               "nginx -g 'daemon ..."   About a minute ago   Up 46 seconds       80/tcp              n1[root@localhost mnt]# docker container update --restart=always n1n1[root@localhost mnt]# systemctl restart docker [root@localhost mnt]# docker ps -aCONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                     PORTS               NAMES46cdfc60b7a6        nginx               "nginx -g 'daemon ..."   2 minutes ago       Exited (0) 5 seconds ago                       n379d55a734c26        nginx               "nginx -g 'daemon ..."   2 minutes ago       Exited (0) 5 seconds ago                       n2f7b2206c019d        nginx               "nginx -g 'daemon ..."   2 minutes ago       Up 2 seconds               80/tcp              n1

2.docker-compose 关机或者重启docker同时重启容器restart always的配置

众所周知，存粹使用docker启动的话需要加-restart=always即可实现这个功能，而使用docker-compose的话在相关服务配置下加 restart: always 就行

version: '2'services:  database:    build: ./mysql/    command: mysqld --user=root --verbose    restart: always     environment:      MYSQL_DATABASE: "web_level3_sqli"      MYSQL_USER: "web_level3_sqli"      MYSQL_PASSWORD: "thisisasecurepassword123"      MYSQL_ROOT_PASSWORD: "root"      MYSQL_ALLOW_EMPTY_PASSWORD: "yes"  web:    build: ./www/    restart: always    ports:     - "12000:80"    volumes:      - ./www/src:/var/www/html    links:      - database