Ubuntu中Docker的远程访问
查看docker版本信息（2.9机器上）
root@ubuntu:~# docker version
Client version: 1.6.2
Client API version: 1.18
Go version (client): go1.2.1
Git commit (client): 7c8fca2
OS/Arch (client): linux/amd64
Server version: 1.6.2
Server API version: 1.18
Go version (server): go1.2.1
Git commit (server): 7c8fca2
OS/Arch (server): linux/amd64
测试unix:///var/run/docker.sock链接方式（2.9机器上）
root@ubuntu:~#nc -U /var/run/docker.sock
GET/info HTTP/1.1
HTTP/1.1 200 OK
Content-Type: application/json
Job-Name: info
Date: Sat, 01 Jul 2017 12:27:33 GMT
Content-Length: 897
{"Containers":4,"Debug":0,"DockerRootDir":"/var/lib/docker","Driver":"aufs","DriverStatus":[["RootDir","/var/lib/docker/aufs"],["Backing Filesystem","extfs"],["Dirs","19"],["Dirperm1Supported","true"]],"ExecutionDriver":"native-0.2","ID":"RYLL:54NR:2IOC:AUGN:RFJJ:N7OV:4TZL:NCD5:MSSN:4OO5:2ZOJ:D6AT","IPv4Forwarding":1,"Images":11,"IndexServerAddress":"https://index.docker.io/v1/","InitPath":"/usr/lib/docker.io/dockerinit","InitSha1":"22082e594df367c79a11672c59a9d5da15851227","KernelVersion":"4.2.0-27-generic","Labels":null,"MemTotal":2079969280,"MemoryLimit":1,"NCPU":1,"NEventsListener":0,"NFd":14,"NGoroutines":14,"Name":"ubuntu","OperatingSystem":"Ubuntu14.04.4LTS","RegistryConfig":{"IndexConfigs":{"docker.io":{"Mirrors":null,"Name":"docker.io","Official":true,"Secure":true}},"InsecureRegistryCIDRs":["127.0.0.0/8"]},"SwapLimit":0,"SystemTime":"2017-07-01T05:27:33.48953141-07:00"}
HTTP/1.1 400 Bad Request
root@ubuntu:~#
root@ubuntu:~#ll /var/run/docker.sock
srw-rw---- 1 root docker 0 Jul 1 05:14 /var/run/docker.sock=
root@ubuntu:~#
root@ubuntu:~# status docker
root@ubuntu:~# service docker stop
root@ubuntu:~# status docker
root@ubuntu:~# service docker start
root@ubuntu:~# service docker restart
修改/etc/default/docker配置文件（2.9机器上）
root@ubuntu:~#vim /etc/default/docker
......
DOCKER_OPTS="--label name=docker_server_1"
......
root@ubuntu:~#service docker restart
root@ubuntu:~# ps -ef|grep docker
root 12236 1 6 05:42 ? 00:00:00 /usr/bin/docker -d --labelname=docker_server_1
root 12277 8863 0 05:42 pts/1 00:00:00 grep --color=auto docker
root@ubuntu:~#docker info
Containers: 4
Images: 11
Storage Driver: aufs
Root Dir:/var/lib/docker/aufs
BackingFilesystem: extfs
Dirs: 19
Dirperm1Supported: true
Execution Driver: native-0.2
Kernel Version: 4.2.0-27-generic
Operating System: Ubuntu 14.04.4 LTS
CPUs: 1
Total Memory: 1.937 GiB
Name: ubuntu
ID: RYLL:54NR:2IOC:AUGN:RFJJ:N7OV:4TZL:NCD5:MSSN:4OO5:2ZOJ:D6AT
WARNING: No swap limit support
Labels:
name=docker_server_1
root@ubuntu:~#
root@ubuntu:~#
docker服务端采用tcp的方式连接（2.9机器上）
root@ubuntu:~# vim /etc/default/docker
root@ubuntu:~# cat /etc/default/docker
DOCKER_OPTS="--label name=docker_server_1 -Htcp://0.0.0.0:2375"
root@ubuntu:~#
root@ubuntu:~# service docker restart
root@ubuntu:~# ps -ef|grep docker
root 2521 1 2 06:25 ? 00:00:00 /usr/bin/docker -d --labelname=docker_server_1 -H tcp://0.0.0.0:2375
root 2559 2347 0 06:25 pts/1 00:00:00 grep --color=auto docker
root@ubuntu:~#
安装docker（2.10机器上）
root@ubuntu:~#uname -a
Linux ubuntu 4.2.0-27-generic #32~14.04.1-UbuntuSMP Fri Jan 22 15:32:26 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
root@ubuntu:~# ls -l/sys/class/misc/device-mapper
lrwxrwxrwx 1 root root 0 Jul 1 05:56 /sys/class/misc/device-mapper ->../../devices/virtual/misc/device-mapper
root@ubuntu:~#apt-get install docker.io
root@ubuntu:~#docker run ubuntu echo 'Hello World!'
Hello World!
root@ubuntu:~#docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
ubuntu latest dc8dd8718e57 10 daysago 119.2 MB
root@ubuntu:~#docker info
Containers: 1
Images: 6
Storage Driver: aufs
Root Dir:/var/lib/docker/aufs
BackingFilesystem: extfs
Dirs: 8
Dirperm1Supported: true
Execution Driver: native-0.2
Kernel Version: 4.2.0-27-generic
Operating System: Ubuntu 14.04.4 LTS
CPUs: 1
Total Memory: 1.937 GiB
Name: ubuntu
ID:ZMIO:CQD2:CT7E:JZEI:TXLG:BTM7:VMP5:ZDDO:DHGO:JB2J:NEWG:CW6D
WARNING: No swap limit support
root@ubuntu:~#
编辑/etc/default/docker配置文件（2.10机器上）
root@ubuntu:~#vim /etc/default/docker
......
DOCKER_OPTS="--labelname=docker_server_2"
......
root@ubuntu:~#service docker restart
docker stop/waiting
docker start/running, process 5471
root@ubuntu:~# docker info
Containers: 1
Images: 6
Storage Driver: aufs
Root Dir:/var/lib/docker/aufs
BackingFilesystem: extfs
Dirs: 8
Dirperm1Supported: true
Execution Driver: native-0.2
Kernel Version: 4.2.0-27-generic
Operating System: Ubuntu 14.04.4 LTS
CPUs: 1
Total Memory: 1.937 GiB
Name: ubuntu
ID:ZMIO:CQD2:CT7E:JZEI:TXLG:BTM7:VMP5:ZDDO:DHGO:JB2J:NEWG:CW6D
WARNING: No swap limit support
Labels:
name=docker_server_2
root@ubuntu:~#
root@ubuntu:~#curl http://192.168.2.9:2375/info
{"Containers":4,"Debug":0,"DockerRootDir":"/var/lib/docker","Driver":"aufs","DriverStatus":[["RootDir","/var/lib/docker/aufs"],["BackingFilesystem","extfs"],["Dirs","19"],["Dirperm1Supported","true"]],"ExecutionDriver":"native-0.2","ID":"RYLL:54NR:2IOC:AUGN:RFJJ:N7OV:4TZL:NCD5:MSSN:4OO5:2ZOJ:D6AT","IPv4Forwarding":1,"Images":11,"IndexServerAddress":"https://index.docker.io/v1/","InitPath":"/usr/lib/docker.io/dockerinit","InitSha1":"22082e594df367c79a11672c59a9d5da15851227","KernelVersion":"4.2.0-27-generic","Labels":["name=docker_server_1"],"MemTotal":2079969280,"MemoryLimit":1,"NCPU":1,"NEventsListener":0,"NFd":14,"NGoroutines":14,"Name":"ubuntu","OperatingSystem":"Ubuntu14.04.4 LTS","RegistryConfig":{"IndexConfigs":{"docker.io":{"Mirrors":null,"Name":"docker.io","Official":true,"Secure":true}},"InsecureRegistryCIDRs":["127.0.0.0/8"]},"SwapLimit":0,"SystemTime":"2017-07-01T06:26:37.042904804-07:00"}
root@ubuntu:~#
docker远程访问-修改客户端配置（2.10机器上）
root@ubuntu:~#export DOCKER_HOST="tcp://192.168.2.9:2375"
root@ubuntu:~#docker info
Containers: 4
Images: 11
Storage Driver: aufs
Root Dir:/var/lib/docker/aufs
BackingFilesystem: extfs
Dirs: 19
Dirperm1Supported: true
Execution Driver: native-0.2
Kernel Version: 4.2.0-27-generic
Operating System: Ubuntu 14.04.4 LTS
CPUs: 1
Total Memory: 1.937 GiB
Name: ubuntu
ID:RYLL:54NR:2IOC:AUGN:RFJJ:N7OV:4TZL:NCD5:MSSN:4OO5:2ZOJ:D6AT
WARNING: No swap limit support
Labels:
name=docker_server_1
root@ubuntu:~#
取消远程访问（2.10机器上）
root@ubuntu:~#export DOCKER_HOST=""
root@ubuntu:~#docker info
Containers: 1
Images: 6
Storage Driver: aufs
Root Dir:/var/lib/docker/aufs
BackingFilesystem: extfs
Dirs: 8
Dirperm1Supported: true
Execution Driver: native-0.2
Kernel Version: 4.2.0-27-generic
Operating System: Ubuntu 14.04.4 LTS
CPUs: 1
Total Memory: 1.937 GiB
Name: ubuntu
ID:ZMIO:CQD2:CT7E:JZEI:TXLG:BTM7:VMP5:ZDDO:DHGO:JB2J:NEWG:CW6D
WARNING: No swap limit support
Labels:
name=docker_server_2
root@ubuntu:~#
在服务端设置unix和tcp2中连接方式（2.9机器上）
查看docker信息-异常（2.9机器上）：
root@ubuntu:~#docker info
FATA[0000] Gethttp:///var/run/docker.sock/v1.18/info: dial unix /var/run/docker.sock: no suchfile or directory. Are you trying to connect to a TLS-enabled daemon withoutTLS?
root@ubuntu:~#
处理方法
root@ubuntu:~#vim /etc/default/docker tcp
root@ubuntu:~#cat /etc/default/docker
......
DOCKER_OPTS="--label name=docker_server_1 -H tcp://0.0.0.0:2375 -Hunix:///var/run/docker.sock"
......
root@ubuntu:~#
root@ubuntu:~#service docker restart
root@ubuntu:~#docker info
Containers: 4
Images: 11
Storage Driver: aufs
Root Dir:/var/lib/docker/aufs
BackingFilesystem: extfs
Dirs: 19
Dirperm1Supported: true
Execution Driver: native-0.2
Kernel Version: 4.2.0-27-generic
Operating System: Ubuntu 14.04.4 LTS
CPUs: 1
Total Memory: 1.937 GiB
Name: ubuntu
ID: RYLL:54NR:2IOC:AUGN:RFJJ:N7OV:4TZL:NCD5:MSSN:4OO5:2ZOJ:D6AT
WARNING: No swap limit support
Labels:
name=docker_server_1
root@ubuntu:~#