Question

我尝试使用泊坞窗运行postgres container并从另一个容器访问它。重现的步骤：

运行postgres容器并发布端口：docker run -e POSTGRES_PASSWORD=test -d -p 5555:5432 postgres:9.6
运行其他容器以访问postgres： docker run -it debian /bin/bash apt-get update apt-get install telnet telnet 172.17.0.1 5555

结果：Trying 172.17.0.1...然后失败。但是我可以使用localhost从主机访问它，或者使用public ip从外部访问它，因为映像允许所有ip，我不会阻止该端口。 ping工作。

我已经在我的机器上对此进行了测试，它按预期工作，但我需要知道为什么它不能在这台服务器上运行。

我可以从哪里开始查看服务器上的错误信息？

更新我尝试将telnet直接发送到postgres容器（172.17.0.2）的ip，我收到以下错误： telnet 172.17.0.2 Trying 172.17.0.2... telnet: Unable to connect to remote host: Connection refused 但ping仍然适用于172.17.0.2

在postgres容器上输出docker检查：

docker inspect a379130e94f7
[
    {
        "Id": "a379130e94f7596ebe632e3ae825710c978577a3fb6b245a4f95374051eb8310",
        "Created": "2017-03-31T08:07:36.06939775Z",
        "Path": "docker-entrypoint.sh",
        "Args": [
            "postgres"
        ],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 20283,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2017-03-31T08:07:37.257557864Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        },
        "Image": "sha256:9910dc9f2ac0dbc193abc4718984cb3ad48989fc02cac4b36ad3d6b7d5d781f9",
        "ResolvConfPath": "/var/lib/docker/containers/a379130e94f7596ebe632e3ae825710c978577a3fb6b245a4f95374051eb8310/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/a379130e94f7596ebe632e3ae825710c978577a3fb6b245a4f95374051eb8310/hostname",
        "HostsPath": "/var/lib/docker/containers/a379130e94f7596ebe632e3ae825710c978577a3fb6b245a4f95374051eb8310/hosts",
        "LogPath": "/var/lib/docker/containers/a379130e94f7596ebe632e3ae825710c978577a3fb6b245a4f95374051eb8310/a379130e94f7596ebe632e3ae825710c978577a3fb6b245a4f95374051eb8310-json.log",
        "Name": "/gallant_thompson",
        "RestartCount": 0,
        "Driver": "overlay",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": null,
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "default",
            "PortBindings": {
                "5432/tcp": [
                    {
                        "HostIp": "",
                        "HostPort": "5555"
                    }
                ]
            },
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "CapAdd": null,
            "CapDrop": null,
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": null,
            "GroupAdd": null,
            "IpcMode": "",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 0,
            "PidMode": "",
            "Privileged": false,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": null,
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 67108864,
            "Runtime": "runc",
            "ConsoleSize": [
                0,
                0
            ],
            "Isolation": "",
            "CpuShares": 0,
            "Memory": 0,
            "NanoCpus": 0,
            "CgroupParent": "",
            "BlkioWeight": 0,
            "BlkioWeightDevice": null,
            "BlkioDeviceReadBps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteIOps": null,
            "CpuPeriod": 0,
            "CpuQuota": 0,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DiskQuota": 0,
            "KernelMemory": 0,
            "MemoryReservation": 0,
            "MemorySwap": 0,
            "MemorySwappiness": -1,
            "OomKillDisable": false,
            "PidsLimit": 0,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0
        },
        "GraphDriver": {
            "Name": "overlay",
            "Data": {
                "LowerDir": "/var/lib/docker/overlay/34f43052282b0bcba741b61cb812bc4e05d1d0045820c36781684e2f2f763b41/root",
                "MergedDir": "/var/lib/docker/overlay/904ec813189c55332d8cb5ee3dca74e211a0d42a4434f8a90e07b8a05f4d5c5b/merged",
                "UpperDir": "/var/lib/docker/overlay/904ec813189c55332d8cb5ee3dca74e211a0d42a4434f8a90e07b8a05f4d5c5b/upper",
                "WorkDir": "/var/lib/docker/overlay/904ec813189c55332d8cb5ee3dca74e211a0d42a4434f8a90e07b8a05f4d5c5b/work"
            }
        },
        "Mounts": [
            {
                "Type": "volume",
                "Name": "82dd5d73415e8142eb5bb985a9695f46772328f271ede839cbf55436917ed120",
                "Source": "/var/lib/docker/volumes/82dd5d73415e8142eb5bb985a9695f46772328f271ede839cbf55436917ed120/_data",
                "Destination": "/var/lib/postgresql/data",
                "Driver": "local",
                "Mode": "",
                "RW": true,
                "Propagation": ""
            }
        ],
        "Config": {
            "Hostname": "a379130e94f7",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {
                "5432/tcp": {}
            },
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "POSTGRES_PASSWORD=test",
                "PATH=/usr/lib/postgresql/9.6/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "GOSU_VERSION=1.7",
                "LANG=en_US.utf8",
                "PG_MAJOR=9.6",
                "PG_VERSION=9.6.2-1.pgdg80+1",
                "PGDATA=/var/lib/postgresql/data"
            ],
            "Cmd": [
                "postgres"
            ],
            "ArgsEscaped": true,
            "Image": "postgres:9.6",
            "Volumes": {
                "/var/lib/postgresql/data": {}
            },
            "WorkingDir": "",
            "Entrypoint": [
                "docker-entrypoint.sh"
            ],
            "OnBuild": null,
            "Labels": {}
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "55c678dffab73ca25857667ddb003751494d32beb917abd1bba4d77f61071d9f",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {
                "5432/tcp": [
                    {
                        "HostIp": "0.0.0.0",
                        "HostPort": "5555"
                    }
                ]
            },
            "SandboxKey": "/var/run/docker/netns/55c678dffab7",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "a0f845fa572fd6b15fc7c2ba74d3a302eb353e51ddbafb97d81e8858124808d7",
            "Gateway": "172.17.0.1",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "172.17.0.2",
            "IPPrefixLen": 16,
            "IPv6Gateway": "",
            "MacAddress": "02:42:ac:11:00:02",
            "Networks": {
                "bridge": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "NetworkID": "16d30671a47d90037673ef30843421eaeeeba41028ec204a8fcea13ac8108f6d",
                    "EndpointID": "a0f845fa572fd6b15fc7c2ba74d3a302eb353e51ddbafb97d81e8858124808d7",
                    "Gateway": "172.17.0.1",
                    "IPAddress": "172.17.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:11:00:02"
                }
            }
        }
    }
]

Answer 1

我按照你的步骤为我工作。

您可以尝试检查容器。首先得到它的名字：

docker ps

然后用：

检查容器

docker inspect CONTAINER_NAME

在我的例子中，码头工人检查了zealous_wright。在这里您可以找到容器的IP地址和端口，尝试使用此IP和端口。如果它仍然无法正常工作，可以尝试分配一个5555以外的端口。分享容器的检查数据可能很有用，也许我们可以看到什么是错的。

更新：

它可能与代理有关。我正在使用DockerForMac，因此存在一些差异，但突出的是：

"no_proxy=*.local, 169.254/16"

我有这个而你却没有。当我删除它时，我得到了与你相同的错误。我通过转到：

改变了这一点

Docker首选项 - ＆gt;代理 - ＆gt;使用系统代理，而不是无代理。

希望这有帮助！

发布docker容器端口并从另一个docker容器访问该端口

1 个答案: