| commit | 064f18a2641914bb3973ea865b6936f662022248 | [log] [tgz] |
|---|---|---|
| author | Sam Kunz <samkunz@google.com> | Wed Feb 09 23:20:07 2022 +0000 |
| committer | Sam Kunz <samkunz@google.com> | Thu Feb 10 22:00:16 2022 +0000 |
| tree | 81305e765b2d2e57731f71aeacfd76ca25c68958 | |
| parent | ed49e31e9f3dbad66a36e934e91fb4228d307ff7 [diff] |
toolbox: Use env var for share-system arg Since systemd v239, using environment variable $SYSTEMD_NSPAWN_SHARE_* instead of --share-system argument has been preferred. This change modifies the systemd-nspawn command to respect this. In practice, this will remove the warning message that is printed when using toolbox and satisfy the systemd-nspawn spec. BUG=b/136605701 TEST=manual verification RELEASE_NOTE=none Change-Id: I025046e57bf0fabe68c384b771a61e94a1ceaf06
toolbox is a small script that launches a container to let you bring in your favorite debugging or admin tools.
$ /usr/bin/toolbox Spawning container core-fedora-latest on /var/lib/toolbox/core-fedora-latest. Press ^] three times within 1s to kill container. -bash-4.3# yum install tcpdump ... -bash-4.3# tcpdump -i ens3 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on ens3, link-type EN10MB (Ethernet), capture size 65535 bytes
toolbox uses a Fedora-based userspace environment by default, but this can be changed to any Docker image. Simply override environment variables in $HOME/.toolboxrc:
core@core-01 ~ $ cat ~/.toolboxrc TOOLBOX_DOCKER_IMAGE=ubuntu-debootstrap TOOLBOX_DOCKER_TAG=14.04 core@core-01 ~ $ toolbox Spawning container core-ubuntu-debootstrap-14.04 on /var/lib/toolbox/core-ubuntu-debootstrap-14.04. Press ^] three times within 1s to kill container. root@core-01:~# apt-get update && apt-get install tcpdump
Set an /etc/passwd entry for one of the users to /usr/bin/toolbox:
useradd bob -m -p '*' -s /usr/bin/toolbox -U -G sudo,docker
Now when SSHing into the system as that user, toolbox will automatically be started:
$ ssh bob@hostname.example.com CoreOS alpha (633.1.0) ... Spawning container core-fedora-latest on /var/lib/toolbox/core-fedora-latest. -bash-4.3 # yum install emacs -bash-4.3 # emacs /media/root/etc/systemd/system/docker.service
Please use the CoreOS issue tracker to report all bugs, issues, and feature requests.