Updating the Genestack

Running a genestack upgrade is fairly simple and consists of mainly updating the git checkout and then running through the needed helm charts to deploy updated applications.

Change to the genestack directory.

cd /opt/genestack

Fetch the latest checkout from your remote.

git fetch origin
git rebase origin/main

Update the submodules.

git pull --recurse-submodules

Updating the genestack applications

An update is generally the same as an install. Many of the Genestack applications are governed by operators which include lifecycle management.

• When needing to run an upgrade for the infrastructure operators, consult the operator documentation to validate the steps required.
• When needing to run an upgrade for the OpenStack components, simply re-run the helm charts as documented in the Genestack installation process.

Kubernetes Upgrade Notes

Over the course of normal operations it's likely that a CRD will change versions, names, or something else. In these cases, should an operator or helm chart not gracefully handle an full upgrade, the kubectl convert plugin can be used to make some adjustments where needed.

kubectl get --namespace openstack crd.namespace -o yaml value > /tmp/value.crd.namespace.yaml
kubectl convert -f /tmp/value.crd.namespace.yaml --output-version new-namespace/VERSION

Kubernetes Finalizers

When processing an upgrade there may come a time when a finalizer is stuck, typically something that happens when an operator or an api reference is changed. If this happens one way to resolve the issue is to patch the Finalizers.

kubectl patch $@ --type='json' -p='[{"op": "remove", "path": "/metadata/finalizers"}]'