我正在测试 docker 并浏览了许多文档，但我仍然无法将它们连接在一起。我有一个 shell 脚本来测试它，但我没有得到这些运行之间的连接。
$MAXTESTTIME=180
MACHINE1=$(docker run --net="testnet" -h MACHINE1 --name MACHINE1 -p 10080:80 -v /root/testcontent:/var/www/html:ro --cpuset-cpus="3-9" --memory="2G" -d ubuntu /bin/bash -c "sleep 120")
MACHINE2=$(docker run --net="testnet" -h MACHINE2 --link MACHINE1:MACHINE1 --name MACHINE2 -v /root/testcontent:/var/www/html:ro --cpuset-cpus="10-11" --memory="2G" -d ubuntu /bin/bash -c "apt-get -y update && apt-get -y install apt-utils iputils-ping && ping -c 2 MACHINE1 && ping -c 2 8.8.8.8 && ping -c 2 www.google.com")
docker network create testnet
sleep 2
docker start $MACHINE1 && sleep 1 && docker start $MACHINE2 & sleep $MAXTESTTIME; docker stop $MACHINE1 & docker stop $MACHINE2
正如你所看到的，我在两台机器上创建了一个循环，让它们运行直到时间到。但如果我将它们设置为专用网络或进行端口转发，我测试什么并不重要。他们永远无法进行名称查找或 ping 主机。
有人可以指出我做错了什么吗？我从 2、5 天开始就试图解决这个问题，但我没有更接近。
Containers: 2
Running: 2
Paused: 0
Stopped: 0
Images: 4
Server Version: 1.12.1
Storage Driver: aufs
Root Dir: /var/lib/docker/aufs
Backing Filesystem: extfs
Dirs: 11
Dirperm1 Supported: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host overlay null
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Security Options: apparmor seccomp
Kernel Version: 4.4.0-31-generic
Operating System: Ubuntu 16.04.1 LTS
OSType: linux
Architecture: x86_64
CPUs: 12
Total Memory: 125.9 GiB
Name: xxxxxx.li
ID: xxxxxxxxxxxxx
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
WARNING: No swap limit support
Insecure Registries:
127.0.0.0/8
这是检查输出
root@monster ~ # docker inspect MACHINE1
[
{
"Id": "81f21a696a290813e32ee12af981453cfe29b26cdef809712dbbc4b77506e57c",
"Created": "2016-08-21T18:05:16.3526528Z",
"Path": "/bin/bash",
"Args": [
"-c",
"apt-get update \u0026\u0026 apt-get -y upgrade \u0026\u0026 apt-get -y install apache2 \u0026\u0026 systemctl restart apache2 \u0026\u0026 systemctl start apache2 \u0026\u0026 while sleep 5; do echo blah; done"
],
"State": {
"Status": "exited",
"Running": false,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 0,
"ExitCode": 1,
"Error": "",
"StartedAt": "2016-08-21T18:05:16.672425325Z",
"FinishedAt": "2016-08-21T18:05:40.466207063Z"
},
"Image": "sha256:f8d79ba03c00bbcd8079cf05b7526ac8f4f422744aad8c3747a29a38ed8c4a41",
"ResolvConfPath": "/var/lib/docker/containers/81f21a696a290813e32ee12af981453cfe29b26cdef809712dbbc4b77506e57c/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/81f21a696a290813e32ee12af981453cfe29b26cdef809712dbbc4b77506e57c/hostname",
"HostsPath": "/var/lib/docker/containers/81f21a696a290813e32ee12af981453cfe29b26cdef809712dbbc4b77506e57c/hosts",
"LogPath": "/var/lib/docker/containers/81f21a696a290813e32ee12af981453cfe29b26cdef809712dbbc4b77506e57c/81f21a696a290813e32ee12af981453cfe29b26cdef809712dbbc4b77506e57c-json.log",
"Name": "/MACHINE1",
"RestartCount": 0,
"Driver": "aufs",
"MountLabel": "",
"ProcessLabel": "",
"AppArmorProfile": "",
"ExecIDs": null,
"HostConfig": {
"Binds": [
"/root/testcontent:/var/www/html:ro"
],
"ContainerIDFile": "",
"LogConfig": {
"Type": "json-file",
"Config": {}
},
"NetworkMode": "testnet",
"PortBindings": {
"80/tcp": [
{
"HostIp": "",
"HostPort": "10080"
}
]
},
"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": 12884901888,
"CgroupParent": "",
"BlkioWeight": 0,
"BlkioWeightDevice": null,
"BlkioDeviceReadBps": null,
"BlkioDeviceWriteBps": null,
"BlkioDeviceReadIOps": null,
"BlkioDeviceWriteIOps": null,
"CpuPeriod": 0,
"CpuQuota": 0,
"CpusetCpus": "3-9",
"CpusetMems": "",
"Devices": [],
"DiskQuota": 0,
"KernelMemory": 0,
"MemoryReservation": 0,
"MemorySwap": -1,
"MemorySwappiness": -1,
"OomKillDisable": false,
"PidsLimit": 0,
"Ulimits": null,
"CpuCount": 0,
"CpuPercent": 0,
"IOMaximumIOps": 0,
"IOMaximumBandwidth": 0
},
"GraphDriver": {
"Name": "aufs",
"Data": null
},
"Mounts": [
{
"Source": "/root/testcontent",
"Destination": "/var/www/html",
"Mode": "ro",
"RW": false,
"Propagation": "rprivate"
}
],
"Config": {
"Hostname": "MACHINE1",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"ExposedPorts": {
"80/tcp": {}
},
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
],
"Cmd": [
"/bin/bash",
"-c",
"apt-get update \u0026\u0026 apt-get -y upgrade \u0026\u0026 apt-get -y install apache2 \u0026\u0026 systemctl restart apache2 \u0026\u0026 systemctl start apache2 \u0026\u0026 while sleep 5; do echo blah; done"
],
"Image": "ubuntu",
"Volumes": null,
"WorkingDir": "",
"Entrypoint": null,
"OnBuild": null,
"Labels": {}
},
"NetworkSettings": {
"Bridge": "",
"SandboxID": "b5165f66d0a487ddb8ff33fc4a9cd078f67b8cccb3a34bc6473d411cca9e5d77",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": null,
"SandboxKey": "/var/run/docker/netns/b5165f66d0a4",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "",
"Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"MacAddress": "",
"Networks": {
"testnet": {
"IPAMConfig": null,
"Links": null,
"Aliases": [
"81f21a696a29"
],
"NetworkID": "a2c25f900d0b2fe4f8a8e5f1b564d4bac107af4a0e2ab6bfbd8c72d7c009a0d2",
"EndpointID": "",
"Gateway": "",
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": ""
}
}
}
}
]
root@monster ~ # docker inspect MACHINE2
[
{
"Id": "21d8fefb2bd3b8665d6aacaecb38ff554a06f5f433129104ab97f318e3ad8168",
"Created": "2016-08-21T18:05:16.69206676Z",
"Path": "/bin/bash",
"Args": [
"-c",
"apt-get -y update \u0026\u0026 apt-get -y install apt-utils iputils-ping wget curl git netcat \u0026\u0026 while sleep 1; do ping -c 3 MACHINE1 \u0026\u0026 curl http://MACHINE1:80 \u0026\u0026 curl http://MACHINE1:10080 ; done"
],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 25612,
"ExitCode": 0,
"Error": "",
"StartedAt": "2016-08-21T18:05:16.990214383Z",
"FinishedAt": "0001-01-01T00:00:00Z"
},
"Image": "sha256:f8d79ba03c00bbcd8079cf05b7526ac8f4f422744aad8c3747a29a38ed8c4a41",
"ResolvConfPath": "/var/lib/docker/containers/21d8fefb2bd3b8665d6aacaecb38ff554a06f5f433129104ab97f318e3ad8168/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/21d8fefb2bd3b8665d6aacaecb38ff554a06f5f433129104ab97f318e3ad8168/hostname",
"HostsPath": "/var/lib/docker/containers/21d8fefb2bd3b8665d6aacaecb38ff554a06f5f433129104ab97f318e3ad8168/hosts",
"LogPath": "/var/lib/docker/containers/21d8fefb2bd3b8665d6aacaecb38ff554a06f5f433129104ab97f318e3ad8168/21d8fefb2bd3b8665d6aacaecb38ff554a06f5f433129104ab97f318e3ad8168-json.log",
"Name": "/MACHINE2",
"RestartCount": 0,
"Driver": "aufs",
"MountLabel": "",
"ProcessLabel": "",
"AppArmorProfile": "",
"ExecIDs": null,
"HostConfig": {
"Binds": [
"/root/testcontent:/var/www/html:ro"
],
"ContainerIDFile": "",
"LogConfig": {
"Type": "json-file",
"Config": {}
},
"NetworkMode": "testnet",
"PortBindings": {},
"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": 12884901888,
"CgroupParent": "",
"BlkioWeight": 0,
"BlkioWeightDevice": null,
"BlkioDeviceReadBps": null,
"BlkioDeviceWriteBps": null,
"BlkioDeviceReadIOps": null,
"BlkioDeviceWriteIOps": null,
"CpuPeriod": 0,
"CpuQuota": 0,
"CpusetCpus": "10-11",
"CpusetMems": "",
"Devices": [],
"DiskQuota": 0,
"KernelMemory": 0,
"MemoryReservation": 0,
"MemorySwap": -1,
"MemorySwappiness": -1,
"OomKillDisable": false,
"PidsLimit": 0,
"Ulimits": null,
"CpuCount": 0,
"CpuPercent": 0,
"IOMaximumIOps": 0,
"IOMaximumBandwidth": 0
},
"GraphDriver": {
"Name": "aufs",
"Data": null
},
"Mounts": [
{
"Source": "/root/testcontent",
"Destination": "/var/www/html",
"Mode": "ro",
"RW": false,
"Propagation": "rprivate"
}
],
"Config": {
"Hostname": "MACHINE2",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
],
"Cmd": [
"/bin/bash",
"-c",
"apt-get -y update \u0026\u0026 apt-get -y install apt-utils iputils-ping wget curl git netcat \u0026\u0026 while sleep 1; do ping -c 3 MACHINE1 \u0026\u0026 curl http://MACHINE1:80 \u0026\u0026 curl http://MACHINE1:10080 ; done"
],
"Image": "ubuntu",
"Volumes": null,
"WorkingDir": "",
"Entrypoint": null,
"OnBuild": null,
"Labels": {}
},
"NetworkSettings": {
"Bridge": "",
"SandboxID": "49d4c262db743f5e95396ef0939afc069f725c73d3b7ada4682b7103e099f7c0",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {},
"SandboxKey": "/var/run/docker/netns/49d4c262db74",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "",
"Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"MacAddress": "",
"Networks": {
"testnet": {
"IPAMConfig": null,
"Links": [
"MACHINE1:MACHINE1"
],
"Aliases": [
"21d8fefb2bd3"
],
"NetworkID": "a2c25f900d0b2fe4f8a8e5f1b564d4bac107af4a0e2ab6bfbd8c72d7c009a0d2",
"EndpointID": "bf5e1d75206f997c946f299c3901a133001f309e5f1da382c6e292049ff29d58",
"Gateway": "192.168.0.1",
"IPAddress": "192.168.0.3",
"IPPrefixLen": 24,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:c0:a8:00:03"
}
}
}
}
]
root@monster ~ #
从 ping 中我看到名称解析正在工作，但数据包未到达机器 1。
答案1
命令都是正确的，但我必须设置：
sysctl -w net.ipv4.ip_forward=1
然后需要重启docker服务
service docker restart