Support snap parallel installs

[lengau]

Summary

Please support the snap Parallel installs feature. Currently this fails while running the configure hook. I believe swapping out ${SNAP_NAME} for ${SNAP_INSTANCE_NAME} could help, but I'm not sure what else might be needed

Why is this important?

I'd like to be able to run multiple versions of microk8s simultaneously in order to test/ensure that charms run with different versions of microk8s

Are you interested in contributing to this feature?

yes

[neoaggelos]

Hi @lengau, thank you for bringing this up. Multiple MicroK8s installs on the same host is not really supported at the moment. Other than ${SNAP_NAME} -> ${SNAP_INSTANCE_NAME} in numerous locations, this would also require:

• manually change all the default service ports for k8s (apiserver, kubelet, etc) and microk8s (cluster-agent, k8s-dqlite, etc) services
• manually update all paths for calico (or whatever cni is in use) that mount /var/snap/microk8s/... paths.
• manually update all paths for csi components that mount /var/snap/microk8s/... paths.

Note that the above is noted just for clarity and is entirely unsupported at the moment.

I would instead recommend using LXD to start multiple containers instead: https://microk8s.io/docs/install-lxd

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.