Manage machine-5 minutes a day to play Docker container technology (47)

docker-machine The process of creating machines is simple and well suited for multi-host environments. In addition, Docker machine provides a number of sub-commands to facilitate the management of machine. One of the most common is the ability to perform Docker-related operations without having to log in to machine.

As we learned before, to execute a remote docker command we need to -H Specify a connection string for the target host, such as:

Docker-h tcp://192.168.56.105:2376 PS

Docker machine makes this process even easier. docker-machine env host1displays all the environment variables required to access host1:

650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170728-1501192742912071373.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170728-1501192820980083032.jpg "alt=" 226.png "style=" border:0px;vertical-align:middle; "/ >

Follow the prompts to execute eval $(docker-machine env host1) :

650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170728-1501192742934053478.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170728-1501192821269017432.jpg "style=" border:0px;float:none; "/>

$HOME/.BASHRC   is configured with   ps1= "[\[email protected]\h \w$ (__DOCKER_MACHINE_PS1)]\$ ' , which is used to display the current Docker host.

All Docker commands executed in this state have the effect of executing on host1, such as starting a BusyBox container:

650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170728-1501192742977055298.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170728-1501192821418005864.jpg "style=" border:0px;float:none; "/>

  eval $ (docker-machine env host2)   switch to Host2:

650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170728-1501192743012056832.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170728-1501192821641068446.jpg "style=" border:0px;float:none; "/>

Here are a few useful docker-machine subcommands:

docker-machine upgrade Update your machine's Docker to the latest version, which can be executed in bulk:

650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170728-1501192743057086277.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170728-1501192821879093842.jpg "style=" border:0px;float:none; "/>

docker-machine config to view the Docker daemon configuration for machine:

650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170728-1501192743055008359.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170728-1501192822158084872.jpg "style=" border:0px;float:none; "/>

stop/start/restart   is the operating system operation on machine, and   stop/start/restart Docker daemon.

docker-machine scp You can copy files between different machine, such as:

Docker-machine SCP host1:/tmp/a host2:/tmp/b

Visible, in the multi-host environment Docker machine can greatly improve efficiency, and the operation is very simple, I hope everyone can master.

In the next section we begin to learn about the container network across hosts.

650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170711-1499780326078042943.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170728-1501192822377093870.jpg "alt=" QR code + fingerprint. png "style=" border:0px;font-family: ' Helvetica Neue ', Helvetica, ' Hiragino Sans GB ', ' Microsoft Yahei ', Arial, sans-serif;font-size:medium; "/>

Manage machine-5 minutes a day to play Docker container technology (47)