Cluster API on OpenStack

[haminhcong]

Goals

• [ ] Install Cluster API on OpenStack
• [ ] Using Cluster API create single-controller K8S Cluster
• [ ] Using Cluster API create multi-controller K8S Cluster
• [ ] Using Cluster API create multi-controller K8S Cluster, each controller VM sit in one of three failure domains on OpenStack
• [ ] Automatically integrate monitoring and logging
• [ ] Write Document

References

• https://itnext.io/multi-cloud-and-multi-cluster-declarative-kubernetes-cluster-creation-and-management-with-cluster-6df8efdc2a89
• https://www.youtube.com/watch?v=A2BBuKx1Yhk

[haminhcong]

Error 1 - Missing Load Balancer

Using command:

kubectl apply -f cluster1.yaml

Then check system log when CAPI running to create cluster:

kubectl -n capo-system logs -l control-plane=capo-controller-manager -c manager

the following log showed:

E0316 22:07:29.471903       1 controller.go:257] controller-runtime/controller "msg"="Reconciler error" "error"="failed to create loadbalancer service client: No suitable endpoint could be found in the service catalog." "controller"="openstackmachine" "name"="cluster-1-md-0-frwrt" "namespace"="default"

=> OpenStack Cluster is Missing Load Balancer Service

Solution

• Add Octavia Service to OpenStack

[haminhcong]

Error 2 - initramfs problem

https://github.com/kubernetes-sigs/image-builder/issues/464

Solution

• Restart controller VM after it created by Cluster API
• Need rebuild cluster api VM Image following https://github.com/kubernetes-sigs/image-builder/pull/510

[haminhcong]

Error 3 - Controller Image created Failed

Image required disk size at least 20 GB

Solution

Using OpenStack Flavor has root disk size >= 20 GB