Question

我目前正在尝试使用ansible将docker注册表部署到Amazon ec2。我的食谱中的任务看起来像这样：

- 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中的容器。这在某种程度上起作用。容器正确启动，但卷未正确安装。我通过运行检查了这个：

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

这会在应安装卷的文件夹中的容器中创建一个新文件。因此，此文件应显示在/data/docker-registry-server/opt/docker-registry中的主机上，但不会显示。

运行docker inspect docker-registry时，我得到了这个结果：

[{
"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
}
}
]

这让我觉得容器本身就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码头工人，而不是一个可靠的问题。

我正在使用docker 1.5.0，构建a8a31ed / 1.5.0

此时我确信在如何使用卷方面很可能存在一个愚蠢的错误。（很可能是我的错...）

有谁能告诉我哪里出错了？

Answer 1

既然你说通过移动你正在安装的文件夹它可以工作，我会检查一些事情：

确保您正在装载的目录实际存在于主机上。
确保您运行ansible playbook的用户具有访问您尝试安装的文件夹的正确权限。

Docker Volume：Docker Volume无法在Amazon Linux上正确安装

1 个答案: