当使用来自注册中心的docker映像时,我经常需要查看映像容器创建的卷。
注意:我在Red Hat 7上使用docker 1.3.2版本。
例子
Docker Registry的postgress官方镜像有一个为容器/var/lib/postgresql/data.配置的卷
在postgres容器中显示/var/lib/postgresql/data的卷最简洁的命令是什么?
当使用来自注册中心的docker映像时,我经常需要查看映像容器创建的卷。
注意:我在Red Hat 7上使用docker 1.3.2版本。
例子
Docker Registry的postgress官方镜像有一个为容器/var/lib/postgresql/data.配置的卷
在postgres容器中显示/var/lib/postgresql/data的卷最简洁的命令是什么?
当前回答
打印所有容器及其Docker卷:
docker container inspect $(docker container ls -q) \
-f '{{$container := .Name}}{{range .Mounts}}{{if eq .Type "volume"}}{{$container}} {{.Name}}{{"\n"}}{{end}}{{end}}' \
| grep -v '^$'
其他回答
从Docker文档这里
.Mounts Names of the volumes mounted in this container.
码头工人ps————no-trunc格式”{{.ID}} {{. name}} \ \ t t {{.Mounts}}”
应该工作
在docker 1.10中,现在有了用于数据量容器的新命令。 (对于常规容器,请参见下一节,对于docker 1.8+):
Docker卷ls 码头容积检查
在docker 1.8.1(2015年8月)中,docker inspect -f '{{.Volumes}}' containerid将为空!
你现在需要检查Mounts,这是一个挂载路径列表,比如:
"Mounts": [
{
"Name": "7ced22ebb63b78823f71cf33f9a7e1915abe4595fcd4f067084f7c4e8cc1afa2",
"Source": "/mnt/sda1/var/lib/docker/volumes/7ced22ebb63b78823f71cf33f9a7e1915abe4595fcd4f067084f7c4e8cc1afa2/_data",
"Destination": "/home/git/repositories",
"Driver": "local",
"Mode": "",
"RW": true
}
],
如果你想要第一个挂载的路径(例如),这将是(使用索引0):
docker inspect -f '{{ (index .Mounts 0).Source }}' containerid
Mike Mitterer在下面评论道:
漂亮的打印整件事:
docker inspect -f '{{ json .Mounts }}' containerid | python -m json.tool
或者,正如Mitja所评论的那样,使用jq命令。
docker inspect -f '{{ json .Mounts }}' containerid | jq
对docker-compose用户有用的变体:
docker-compose ps -q | xargs docker container inspect \
-f '{{ range .Mounts }}{{ .Name }}:{{ .Destination }} {{ end }}'
这将非常整洁地输出可解析的音量信息。例子来自我的wordpress docker-compose:
ubuntu@core $ docker-compose ps -q | xargs docker container inspect -f '{{ range .Mounts }}{{ .Name }}:{{ .Destination }} {{ end }}'
core_wpdb:/var/lib/mysql
core_wpcode:/code core_wphtml:/var/www/html
每个容器的输出都包含一行,列出了使用的卷(和挂载点)。修改{{. name}}:{{. destination}}部分来输出你想要的信息。
如果您只想要一个简单的卷列表,则每行一个
$ docker-compose ps -q | xargs docker container inspect \
-f '{{ range .Mounts }}{{ .Name }} {{ end }}' \
| xargs -n 1 echo
core_wpdb
core_wpcode
core_wphtml
Great to generate a list of volumes to backup. I use this technique along with Blacklabelops Volumerize to backup all volumes used by all containers within a docker-compose. The docs for Volumerize don't call it out, but you don't need to use it in a persistent container or to use the built-in facilities for starting and stopping services. I prefer to leave critical operations such as backup and service control to the actual user (outside docker). My backups are triggered by the actual (non-docker) user account, and use docker-compose stop to stop services, backup all volumes in use, and finally docker-compose start to restart.
下面是一行命令来获取正在运行的容器的卷信息:
for contId in `docker ps -q`; do echo "Container Name: " `docker ps -f "id=$contId" | awk '{print $NF}' | grep -v NAMES`; echo "Container Volume: " `docker inspect -f '{{.Config.Volumes}}' $contId`; docker inspect -f '{{ json .Mounts }}' $contId | jq '.[]'; printf "\n"; done
输出是:
root@ubuntu:/var/lib# for contId in `docker ps -q`; do echo "Container Name: " `docker ps -f "id=$contId" | awk '{print $NF}' | grep -v NAMES`; echo "Container Volume: " `docker inspect -f '{{.Config.Volumes}}' $contId`; docker inspect -f '{{ json .Mounts }}' $contId | jq '.[]'; printf "\n"; done
Container Name: freeradius
Container Volume: map[]
Container Name: postgresql
Container Volume: map[/run/postgresql:{} /var/lib/postgresql:{}]
{
"Propagation": "",
"RW": true,
"Mode": "",
"Driver": "local",
"Destination": "/run/postgresql",
"Source": "/var/lib/docker/volumes/83653a53315c693f0f31629f4680c56dfbf861c7ca7c5119e695f6f80ec29567/_data",
"Name": "83653a53315c693f0f31629f4680c56dfbf861c7ca7c5119e695f6f80ec29567"
}
{
"Propagation": "rprivate",
"RW": true,
"Mode": "",
"Destination": "/var/lib/postgresql",
"Source": "/srv/docker/postgresql"
}
Container Name: rabbitmq
Container Volume: map[]
码头工人版本:
root@ubuntu:~# docker version
Client:
Version: 1.12.3
API version: 1.24
Go version: go1.6.3
Git commit: 6b644ec
Built: Wed Oct 26 21:44:32 2016
OS/Arch: linux/amd64
Server:
Version: 1.12.3
API version: 1.24
Go version: go1.6.3
Git commit: 6b644ec
Built: Wed Oct 26 21:44:32 2016
OS/Arch: linux/amd64
显示容器使用的卷的名称和挂载点目的地:
docker container inspect \
-f '{{ range .Mounts }}{{ .Name }}:{{ .Destination }} {{ end }}' \
CONTAINER_ID_OR_NAME
这与Docker 1.13兼容。