Provision not working on example

[terrancesnyder]

Used this repo to configure 1 master and 3 slaves.
https://github.com/techiescamp/vagrant-kubeadm-kubernetes

Issue was when following instructions for zk.config I got a error for PersistentVolumeClaim.

---
apiVersion: zookeeper.stackable.tech/v1alpha1
kind: ZookeeperCluster
metadata:
  name: simple-zk
spec:
  image:
    productVersion: 3.8.0
    stackableVersion: 23.4.0
  servers:
    roleGroups:
      default:
        selector:
          matchLabels:
            kubernetes.io/os: linux
        replicas: 1
        config: {}

The result is always

0/3 nodes are available: pod has unbound immediate PersistentVolumeClaims. preemption: 0/3 nodes are available: 3 No preemption victims found for incoming pod

[fhennig]

Hi!
From the message you posted my first guess would be that the secret-operator is not installed. I'm not sure which instructions you followed, could you provide a link? kubectl get daemonsets should show a secret-operator DaemonSet: secret-operator-daemonset.

[nightkr]

Inspecting the unbound PVC's events might also be able to give further clues towards what's going on.

[terrancesnyder]

@fhennig
Doc: https://docs.stackable.tech/home/stable/hbase/getting_started/installation.html

kubectl get daemonsets
NAME                        DESIRED   CURRENT   READY   UP-TO-DATE   AVAILABLE   NODE SELECTOR   AGE
secret-operator-daemonset   2         2         2       2            2           <none>          8h

[terrancesnyder]

nspecting the unbound PVC

Screenshot
https://paste.pics/acbca980676d33fec0864c864f903b5c

[terrancesnyder]

Also this is the request that is stuck. I notice the PVC doesn't contain the secret operator or any real distinct identified.

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: data-simple-zk-server-default-0
  namespace: default
  uid: b5b63a85-0015-48a4-871c-568b7ea221ae
  resourceVersion: '47128'
  creationTimestamp: '2023-05-22T15:58:41Z'
  labels:
    app.kubernetes.io/component: server
    app.kubernetes.io/instance: simple-zk
    app.kubernetes.io/name: zookeeper
    app.kubernetes.io/role-group: default
  finalizers:
    - kubernetes.io/pvc-protection
  managedFields:
    - manager: kube-controller-manager
      operation: Update
      apiVersion: v1
      time: '2023-05-22T15:58:41Z'
      fieldsType: FieldsV1
      fieldsV1:
        f:metadata:
          f:labels:
            .: {}
            f:app.kubernetes.io/component: {}
            f:app.kubernetes.io/instance: {}
            f:app.kubernetes.io/name: {}
            f:app.kubernetes.io/role-group: {}
        f:spec:
          f:accessModes: {}
          f:resources:
            f:requests:
              .: {}
              f:storage: {}
          f:volumeMode: {}
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
  volumeMode: Filesystem
status:
  phase: Pending

[nightkr]

Ahh, gotcha. It looks like you don't have a default storage provider installed, which means that ZooKeeper doesn't have anywhere to store its data.

If you don't have a regular StorageClass (not listeners.stackable.tech or secrets.stackable.tech) installed, you will need to install one (either from your cloud provider, your SAN provider, or a local one such as https://github.com/rancher/local-path-provisioner).

If you do have a regular StorageClass installed, make sure that exactly one of them is the default (by setting the annotation storageclass.kubernetes.io/is-default-class: "true").

Alternatively, you can select a non-default StorageClass:

servers:
  roleGroups:
    default:
      config:
        resources:
          storage:
            data:
              storageClass: my-storage-class

[terrancesnyder]

Thanks for the response worked like a charm setting default:

# get and run our stackablectl
stackablectl release install -i zookeeper -i kafka -i hdfs -i hbase -i nifi -i secret 23.4

# ensure our k8 have a default storage provider
kubectl create -f https://raw.githubusercontent.com/rancher/local-path-provisioner/master/examples/pvc/pvc.yaml
kubectl create -f https://raw.githubusercontent.com/rancher/local-path-provisioner/master/examples/pod/pod.yaml
kubectl patch storageclass local-path -p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'

# apply zk, and wait for boostrap
kubectl apply -f zk.yaml

[nightkr]

Good to hear!