| commit | ec85d535df105c65fb1457bd39c2fc0d9c41264b | [log] [tgz] |
|---|---|---|
| author | Micah Abbott <miabbott@redhat.com> | Wed Feb 02 09:04:14 2022 -0500 |
| committer | Micah Abbott <miabbott@redhat.com> | Fri Mar 11 11:35:54 2022 -0500 |
| tree | 3d554acc964a4705fe3297333830378632cd4604 | |
| parent | 5a9ebf2bf52fd4ebfe76304a1b60b748c6b6b5ce [diff] |
rhcos-toolbox: add ability to check if a newer image is available If a toolbox container image has been pulled to a node, it may get out of date over time. This adds a check to see if there is a newer toolbox container image available and prompts the user to download it. Closes: RHBZ#2049591 Co-authored-by: Sohan Kunkerkar <sohank2602@gmail.com>
toolbox is a small script that launches a container to let you bring in your favorite debugging or admin tools.
There are currently two scripts that live within this repository:
$ /usr/bin/toolbox Spawning container core-fedora-latest on /var/lib/toolbox/core-fedora-latest. Press ^] three times within 1s to kill container. [root@localhost ~]# dnf -y install tcpdump ... [root@localhost ~]# 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
core@core-01 ~ $ cat ~/.toolboxrc REGISTRY=registry.redhat.io IMAGE=rhel7/rhel-tools:latest core@core-01 ~ $ toolbox Spawning a container 'toolbox-test' with image 'registry.redhat.io/rhel7/rhel-tools:latest'
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,rkt
Now when SSHing into the system as that user, toolbox will automatically be started:
$ ssh bob@hostname.example.com Container Linux by CoreOS alpha (1284.0.0) ... Spawning container bob-fedora-latest on /var/lib/toolbox/bob-fedora-latest. Press ^] three times within 1s to kill container. [root@localhost ~]# dnf -y install emacs-nox ... [root@localhost ~]# emacs /media/root/etc/systemd/system/docker.service