A simple and fast plugin (written in bash) to get a list of dangling VolumeAttachment resources that refer to nodes which do not (longer) exist.
This plugin was written by my own demand and is always subject to change.
Deleting a VolumeAttachment is not possible, because normally Kubernetes itself watches the VolumeAttachments with help of the csi-driver. In certain situations, it can happen that the csi-driver is not able to handle a VolumeAttachment in the case of a node not being present anymore.
Safely deleting a VolumeAttachment in this scenario is possible by patching out the Kubernetes finalizer.
Detection and "deletion" is done convenient and automatic by this plugin.
To install the project, either download the repository as a ZIP file or clone it. Afterwards, you can use the install script (might need root to move the plugin to the right directory) or just move the kubectl-dangling_va script to the kubectl plugin directory.
git clone git@github.com:torbendury/dangling-va.git
cd dangling-va
./install # or sudo ./install, depending on your user permissionsThe plugin is mostly used for debugging faulty CSI drivers that are not capable of cleanly dismounting volumes e.g. after node deletion.
The plugin offers a help subcommand which shows the implemented functionality.
To get a list of all available commands, take a look at the help:
$ kubectl dangling-va help
Usage: kubectl dangling-va <command>
Available commands:
list List all dangling VolumeAttachments that refer to a node which does not exist.
delete Delete all dangling VolumeAttachments that refer to a node which does not exist.
help Print this help
version Print the current installed plugin version- List dangling
VolumeAttachmentresources - Delete dangling
VolumeAttachments
If you have any feedback, please reach out to me at torben@torbendury.de.
Contributions are always welcome!
See CONTRIBUTING.md (to be done) for ways to get started.
This plugin is licensed under GNU GPLv3 which can be read under LICENSE.md.
To make it easy, you may use this software as a private user as well as a commercial user, e.g. a company. You can further distribute and modify the software.
What you can NOT do is disclose the source of this software, copyright it or change the license of it.
Also, I do not provide any liability or warranty in case you break anything while using this software. So take care of what you are doing. If you do not trust me, take a look at the source code.