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1.創(chuàng)建容器時沒有添加參數 --restart=always ,導致的后果是:當 Docker 重啟時,容器未能自動啟動。
docker container update --restart=always 容器名字
操作實例如下:
[root@localhost mnt]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
46cdfc60b7a6 nginx "nginx -g 'daemon ..." About a minute ago Up 42 seconds 80/tcp n3
79d55a734c26 nginx "nginx -g 'daemon ..." About a minute ago Up 42 seconds 80/tcp n2
f7b2206c019d nginx "nginx -g 'daemon ..." About a minute ago Up 46 seconds 80/tcp n1
[root@localhost mnt]# docker container update --restart=always n1
n1
[root@localhost mnt]# systemctl restart docker
[root@localhost mnt]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
46cdfc60b7a6 nginx "nginx -g 'daemon ..." 2 minutes ago Exited (0) 5 seconds ago n3
79d55a734c26 nginx "nginx -g 'daemon ..." 2 minutes ago Exited (0) 5 seconds ago n2
f7b2206c019d nginx "nginx -g 'daemon ..." 2 minutes ago Up 2 seconds 80/tcp n1
2.docker-compose 關機或者重啟docker同時重啟容器restart always的配置
眾所周知,存粹使用docker啟動的話需要加–restart=always即可實現(xiàn)這個功能,而使用docker-compose的話在相關服務配置下加 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
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