有時候,咱們建立容器時忘了添加參數 --restart=always ,當 Docker 重啓時,容器未能自動啓動,mysql
如今要添加該參數怎麼辦呢,方法有二:sql
一、Docker 命令修改docker
docker container update --restart=always 容器名字json
二、直接改配置文件vim
首先中止容器,否則沒法修改配置文件rest
配置文件路徑爲:/var/lib/docker/containers/容器IDserver
在該目錄下找到一個文件 hostconfig.json ,找到該文件中關鍵字 RestartPolicyit
修改前配置:「RestartPolicy」:{「Name」:「no」,「MaximumRetryCount」:0}io
修改後配置:「RestartPolicy」:{「Name」:「always」,「MaximumRetryCount」:0}容器
最後啓動容器。
修改docker容器的掛載路徑
中止全部docker容器
sudo docker stop $(docker ps -a | awk ‘{ print $1}’ | tail -n +2)
中止docker服務
sudo service docker stop
修改mysql路徑
cd ~
sudo cp -r mysql/ /home/server/
備份容器配置文件
cd /var/lib/docker/containers/de9c6501cdd3
cp hostconfig.json hostconfig.json.bak
cp config.v2.json config.v2.json.bak
修改hostconfig的冒號前的配置路徑
vi hostconfig.json
「Binds」: ["/home/server/mysql/conf/my.cnf:/etc/mysql/my.cnf", 「/home/server/mysql/logs:/logs」, 「/home/server/mysql/data:/mysql_data」],
修改config的Source的配置路徑
vi config.v2.json
"MountPoints": {
"/etc/mysql/my.cnf": {
"Source": "/home/server/mysql/conf/my.cnf",
"Destination": "/etc/mysql/my.cnf",
"RW": true,
"Name": "",
"Driver": "",
"Relabel": "",
"Propagation": "rprivate",
"Named": false,
"ID": ""
},
"/logs": {
"Source": "/home/server/mysql/logs",
"Destination": "/logs",
"RW": true,
"Name": "",
"Driver": "",
"Relabel": "",
"Propagation": "rprivate",
"Named": false,
"ID": ""
},
"/mysql_data": {
"Source": "/home/server/mysql/data",
"Destination": "/mysql_data",
"RW": true,
"Name": "",
"Driver": "",
"Relabel": "",
"Propagation": "rprivate",
"Named": false,
"ID": ""
},
"/var/lib/mysql": {
"Source": "",
"Destination": "/var/lib/mysql",
"RW": true,
"Name": "85d91bff7012b57606af819480ce267449084e81ab386737c80ace9fe75f6621",
"Driver": "local",
"Relabel": "",
"Propagation": "",
"Named": false,
"ID": "897cd0152dd152166cb2715044ca4a3915a1b66280e0eb096eb74c2d737d7f77"
}
},
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啓動docker服務
sudo service docker start
啓動全部docker容器
sudo docker start $(docker ps -a | awk ‘{ print $1}’ | tail -n +2)
刪除全部無用容器
docker ps -a | awk '{ print $1}' | wc -l 統計共有多少容器
docker rm $(docker ps -a | awk '{ print $1}' | tail -n -num) //刪除倒數num個容器
若是無用的比較多,啓動全部有用的,再刪除,運行中的容器是不能被移除的
修改docker默認的存儲位置
docker 的全部images及相關信息存儲位置爲:/var/lib/docker
查看默認的docker存儲路徑
docker info |grep ‘Docker Root Dir’
WARNING: No swap limit support
Docker Root Dir: /var/lib/docker
中止全部docker容器
sudo docker stop $(docker ps -a | awk ‘{ print $1}’ | tail -n +2)
中止docker服務
sudo service docker stop
cd /var/lib
打包docker目錄
sudo tar -czvf /usr/docker.tar.gz docker/
cd /usr/
sudo tar -xzvf docker.tar.gz
修改docker默認的存儲位置
sudo vim /etc/docker/daemon.json
{ 「graph」: 「/home/server/docker」 } 啓動docker服務 sudo service docker start 啓動全部docker容器 sudo docker start $(docker ps -a | awk ‘{ print $1}’ | tail -n +2) 查看修改後docker存儲路徑 docker info |grep ‘Docker Root Dir’ WARNING: No swap limit support Docker Root Dir: /usr/docker