15 docs tagged with "Maintenance"

Monitor, update, and troubleshoot your CubeCOS cluster, and perform backup and recovery tasks.

Start up a CubeCOS single-node or multi-node cluster, including bootstrapping behaviour and monitoring guidance.

Disable and remove a failed compute node from a hyper-converged infrastructure (HCI) cluster, then prepare and rejoin a replacement node.

Remove a failed control node from a CubeCOS cluster, prepare a replacement node, and rejoin it to restore cluster services.

Create a CubeCOS snapshot to back up configurations or capture the current state of the platform for recovery, troubleshooting, or audit purposes.

Swap the active firmware partition or back up the active firmware to the inactive partition using the CubeCOS CLI.

Identify and troubleshoot CubeCOS service errors using the web UI or CLI tools.

Disable and remove a compute node from a hyper-converged infrastructure (HCI) cluster, then verify the removal from the CLI and the management UI.

Remove a storage node from a CubeCOS cluster and verify that Ceph recovers its data replication afterward.

Retire a compute node with outdated specs and convert it into a storage node, either by migrating workloads only or by fully rebuilding the node.

Use the CLI to reset instances (virtual machines) that become unresponsive due to unexpected errors.

Recover a failed CubeCOS control node by removing its disks, rebuilding it from a saved snapshot, and rejoining it to the cluster.

Restore CubeCOS from a snapshot to recover a failed node.

Safely shut down a CubeCOS cluster with a step-by-step power-off procedure, including pre-shutdown checks to prevent data loss and service disruption.

Remove a failed storage node from a CubeCOS cluster, prepare a replacement node, and rejoin it to restore Ceph storage.