[系统运维]Destination:volume01 Type:bind Source:/var/lib/docker/volumes

环境

Docker version 20.10.7, build f0df350
CentOS 7

背景

根据dockerfile创建镜像

dockerfile

FROM centos
VOLUME ["volume01","volume02"]
CMD echo "----end----"
CMD /bin/bash

构建命令

#构建镜像
docker build -f /home/dockerfile -t dcyong/centos:1.0 .  
# 运行镜像
docker run -it dcyong/centos:1.0

问题：

docker: Error response from daemon: OCI runtime create failed: invalid mount {Destination:volume01 Type:bind Source:/var/lib/docker/volumes/51792fcdac1428a98575b423b379b72015ffe47eee9a0f0faebdaee1fd194447/_data Options:[rbind]}: mount destination volume01 not absolute: unknown.

参考¹ 建议docker版本降级。我选择维持现版本。

解决思路

1、官网²，没有示例
2、根据官网提示，指定具体的volume01，volume02

VOLUME /home/volume01 /home/volume02

3、新的dockerfile

FROM centos

VOLUME /home/volume01 /home/volume02

CMD echo "-------end---------"
CMD /bin/bash

4、构建

## 移除之前的镜像
docker rmi -f dcyong/centos:1.0

## 构建新的镜像
docker build -f /home/dockerfile -t dcyong/centos:1.0 . 


# 查看
[root@localhost home]# docker images
REPOSITORY            TAG       IMAGE ID       CREATED         SIZE
dcyong/centos         1.0       27a6ab4bd334   4 seconds ago   209MB

5、启动

[root@localhost home]# docker run -it dcyong/centos:1.0
[root@5345c487a4cd /]# 

6、查看

# 容器内
[root@5345c487a4cd /]# ls /home
volume01  volume02

# 宿主机
[root@localhost ~]# docker inspect 5345c487a4cd
"Mounts": [
   {
        "Type": "volume",
        "Name": "cf3f2aff7e50442c23dcca1ab569f62ca1cc86e9292a03899b51cea84d1af86f",
        "Source": "/var/lib/docker/volumes/cf3f2aff7e50442c23dcca1ab569f62ca1cc86e9292a03899b51cea84d1af86f/_data",
        "Destination": "/home/volume01",
        "Driver": "local",
        "Mode": "",
        "RW": true,
        "Propagation": ""
    },
    {
        "Type": "volume",
        "Name": "12ef30dce3b144b9f4b7764c33001797a4d4bc2468ed73b8fdb9eade8a889c94",
        "Source": "/var/lib/docker/volumes/12ef30dce3b144b9f4b7764c33001797a4d4bc2468ed73b8fdb9eade8a889c94/_data",
        "Destination": "/home/volume02",
        "Driver": "local",
        "Mode": "",
        "RW": true,
        "Propagation": ""
    }
]

7、测试成功

# 容器内
[root@6ba8fd8d8536 /]# ls /home
volume01  volume02
[root@6ba8fd8d8536 /]# cd /home/volume01
[root@6ba8fd8d8536 volume01]# echo "hello world" >> test.txt 
[root@6ba8fd8d8536 volume01]# ls
test.txt

# 容器外，目录对应上面的Mounts内的/home/volume01
[root@localhost ~]# cd /var/lib/docker/volumes/cf3f2aff7e50442c23dcca1ab569f62ca1cc86e9292a03899b51cea84d1af86f/_data
[root@localhost _data]# ls
[root@localhost _data]# ls
test.txt

参考

https://docs.docker.com/engine/reference/builder/