How to clean up Slurm

Removing all Charmed HPC resources?

If you are planning to tear down the entire Charmed HPC environment - all models, storage and controllers - you can jump to How to clean up cloud resources instead to remove all resources, including Slurm, in a single step.

This how-to guide shows you how to remove a previously deployed Slurm workload manager in a Charmed HPC cluster.

Destroy Slurm

Data loss warning

Destroying your Slurm deployment may result in permanent data loss. Ensure all data you wish to preserve has been migrated to a safe location before proceeding, or consider using the flag --release-storage with juju destroy-model to release the deployment’s storage rather than destroy it.

Use juju destroy-model to destroy your Slurm deployment. You will need to provide the name of the model your Slurm deployment is located in. For example, to destroy to Slurm deployment located in the slurm model, run:

juju destroy-model --no-prompt --destroy-storage slurm
Tip: List available Juju models

juju models can be used to determine the models you have access to:

user@host:~$
juju models 
Controller: charmed-hpc-controller

Model       Cloud/Region             Type        Status     Machines  Cores  Units  Access  Last connection
controller  charmed-hpc/default      lxd         available         1      -  1      admin   just now
identity    charmed-hpc/default      lxd         available         0      -  -      admin   2026-02-13
slurm*      charmed-hpc/default      lxd         available         7      4  8      admin   2026-02-26
storage     charmed-hpc/default      lxd         available         0      -  -      admin   2026-02-09

Forcibly destroy a stuck Slurm deployment

Your model may become stuck if any of Slurm’s service are in an error state during the model cleanup process. You can determine if your model is stuck by seeing repeated Waiting for model to be removed messages printed to the terminal.

If your Slurm model is stuck, add the --force flag to juju destroy-model to destroy your Slurm deployment and ignore errors:

juju destroy-model --no-prompt --destroy-storage --force slurm

See the Juju destroy-model documentation for the implications of using the --force flag and details of further available options.

Next Steps

Now that you have destroyed your Slurm deployment, you can also clean up your cloud resources:

You can also revisit How to deploy Slurm if you want to create a new Slurm deployment.