我目前正在尝试使用 ansible 将 docker 注册表部署到 Amazon ec2。我的食谱中的任务如下所示:

- name: run docker registry container
  docker:
    image: registry
    name: docker-registry
    state: reloaded
    env:
      SETTINGS_FLAVOR: local
      STORAGE_PATH: /opt/docker-registry
      SEARCH_BACKEND: sqlalchemy
    volumes:
    - "/data/docker-registry-server/opt/docker-registry:/opt/docker-registry"
    ports:
    - "5000:5000"

如您所见，注册表部署为 docker 内的容器。 这在某种程度上有效。容器正确启动，但卷未正确安装。我通过运行检查了这一点:

docker exec -t -i docker-registry touch /opt/docker-registry/touch.me

这会在容器中创建一个新文件，该文件位于应安装卷的文件夹中。所以这个文件应该出现在 /data/docker-registry-server/opt/docker-registry 中的主机上，但它没有。

当运行 docker inspect docker-registry 我得到这个结果:

[{
"AppArmorProfile": "",
"Args": [],
"Config": {
    "AttachStderr": false,
    "AttachStdin": false,
    "AttachStdout": false,
    "Cmd": [
        "docker-registry"
    ],
    "CpuShares": 0,
    "Cpuset": "",
    "Domainname": "",
    "Entrypoint": null,
    "Env": [
        "SETTINGS_FLAVOR=local",
        "SEARCH_BACKEND=sqlalchemy",
        "STORAGE_PATH=/opt/docker-registry",
        "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
        "DOCKER_REGISTRY_CONFIG=/docker-registry/config/config_sample.yml"
    ],
    "ExposedPorts": {
        "5000/tcp": {}
    },
    "Hostname": "7d4bb2448234",
    "Image": "registry",
    "MacAddress": "",
    "Memory": 0,
    "MemorySwap": 0,
    "NetworkDisabled": false,
    "OnBuild": null,
    "OpenStdin": false,
    "PortSpecs": null,
    "StdinOnce": false,
    "Tty": false,
    "User": "",
    "Volumes": {
        "/opt/docker-registry": {}
    },
    "WorkingDir": ""
},
"Created": "2015-04-20T14:00:44.547620575Z",
"Driver": "devicemapper",
"ExecDriver": "native-0.2",
"ExecIDs": [
    "5ea0f2a69b5010ee769963ea030dbf5016bef15f50515c120c3e1d27edb64e03",
    "4d7cdbc371bc7bd7eddc73f531fe4e538186556b59b20da74ffa705ab31306c0"
],
"HostConfig": {
    "Binds": [
        "/data/docker-registry-server/opt/docker-registry:/opt/docker-registry:rw"
    ],
    "CapAdd": null,
    "CapDrop": null,
    "ContainerIDFile": "",
    "Devices": null,
    "Dns": null,
    "DnsSearch": null,
    "ExtraHosts": null,
    "IpcMode": "",
    "Links": null,
    "LxcConf": null,
    "NetworkMode": "",
    "PidMode": "",
    "PortBindings": {
        "5000/tcp": [
            {
                "HostIp": "0.0.0.0",
                "HostPort": "5000"
            }
        ]
    },
    "Privileged": false,
    "PublishAllPorts": false,
    "ReadonlyRootfs": false,
    "RestartPolicy": {
        "MaximumRetryCount": 0,
        "Name": ""
    },
    "SecurityOpt": null,
    "VolumesFrom": null
},
"HostnamePath": "/var/lib/docker/containers/7d4bb2448234962ba8f9da87d3650b38e608a1e405130ba6b35200f52e07ce5b/hostname",
"HostsPath": "/var/lib/docker/containers/7d4bb2448234962ba8f9da87d3650b38e608a1e405130ba6b35200f52e07ce5b/hosts",
"Id": "7d4bb2448234962ba8f9da87d3650b38e608a1e405130ba6b35200f52e07ce5b",
"Image": "59b1f7d49dc843631b9be86f581f9c8a726f7cea8a5c37e648c822e40e440633",
"MountLabel": "",
"Name": "/docker-registry",
"NetworkSettings": {
    "Bridge": "docker0",
    "Gateway": "172.17.42.1",
    "GlobalIPv6Address": "",
    "GlobalIPv6PrefixLen": 0,
    "IPAddress": "172.17.0.62",
    "IPPrefixLen": 16,
    "IPv6Gateway": "",
    "LinkLocalIPv6Address": "fe80::42:acff:fe11:3e",
    "LinkLocalIPv6PrefixLen": 64,
    "MacAddress": "02:42:ac:11:00:3e",
    "PortMapping": null,
    "Ports": {
        "5000/tcp": [
            {
                "HostIp": "0.0.0.0",
                "HostPort": "5000"
            }
        ]
    }
},
"Path": "docker-registry",
"ProcessLabel": "",
"ResolvConfPath": "/var/lib/docker/containers/7d4bb2448234962ba8f9da87d3650b38e608a1e405130ba6b35200f52e07ce5b/resolv.conf",
"RestartCount": 0,
"State": {
    "Error": "",
    "ExitCode": 0,
    "FinishedAt": "0001-01-01T00:00:00Z",
    "OOMKilled": false,
    "Paused": false,
    "Pid": 21595,
    "Restarting": false,
    "Running": true,
    "StartedAt": "2015-04-20T14:00:44.791121849Z"
},
"Volumes": {
    "/opt/docker-registry": "/data/docker-registry-server/opt/docker-registry"
},
"VolumesRW": {
    "/opt/docker-registry": true
}
}
]

这在我看来就像容器本身知道它应该使用一个卷。 Volumes 条目列出了正确的路径。所以这很可能是一个 docker 而不是 ansible 问题。

我正在使用 docker 1.5.0，构建 a8a31ed/1.5.0

在这一点上，我确信应该如何使用卷很可能是一个愚蠢的错误。 (很可能是我的错……)

谁能告诉我哪里出错了？

最佳答案

既然你说它可以通过移动你正在安装的文件夹来工作，我会检查一些事情:

• 确保您要挂载的目录确实存在于主机上。

• 确保您在其下运行 ansible playbook 的任何用户都具有访问您尝试挂载的文件夹的正确权限。

关于Docker 卷 : Docker Volume does not get mounted correctly on Amazon Linux，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29751008/