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EdiD
Asked: 2017-04-18 01:45:05 +0800 CST

How to add description to lxd container?

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lxc list gives a list of containers. When there are a lot of them it is hard to remember what are they for. Is there any solution to add description to this list ? eg. "this machine is for apache and mysql"

lxd

2 Answers

  1. One can control the columns displayed by lxc list with the -c flag. However, there's a predefined list of columns, and as far as I'm aware you can't add new ones. You can see available columns by typing lxc list --help.

    There is, still, one tool you can use, and that's the user.* free-form key/value configuration option (see the documentation). You may set your own keys with

    lxc config set <my-container> user.<my-key> "<key-value-string>"

    Then, you can either filter containers by these values, as in

    lxc list "user.<my-key>=abc"

    or you can read these keys for a specific container with lxc config show <my-container> (or, better yet, lxc config show <my-container> | grep <my-key>).

    You can also remove such keys with lxc config unset <my-container> user.<my-key>, or manually with lxc config edit <my-container>.

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  2. There is a description (at least in 22.04 there is). You can see it if you list the containers like this:-

    lxc ls -c ndts46acP

    You can set/edit the container description like this:-

    lxc config edit <ContainerName>

    And putting your description after the line that starts (that line already existed in my installation):-

    description: <your-description-here>
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