Add PVC for CB-Spider and CB-Tumblebug

[jihoon-seo]

Tested with:

• test/official/sequentialFullTest/testAll-mcis-mcir-ns-cloud.sh aws 1 jhseo
• test/official/sequentialFullTest/cleanAll-mcis-mcir-ns-cloud.sh aws 1 jhseo
• Metadata of CB-Spider and CB-Tumblebug is preserved after ./operator stop (helm uninstall) and ./operator run (helm install)

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PV/PVC	Retain/Keep	Why "Yes"?
cb-spider	Yes	"helm.sh/resource-policy": "keep"
cb-tumblebug	Yes	"helm.sh/resource-policy": "keep"
data-cb-dragonfly-etcd-0	Yes	PVC is generated through StatefulSets' dynamic volume provisioning.
cb-dragonfly-influxdb	No
cb-restapigw-influxdb	No
docker-registry	No

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[Below is For Your Information]

[When CB Helm chart is installed] (./operator run)

❯ kubectl get pv -n cloud-barista 
NAME                                       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                                    STORAGECLASS   REASON   AGE
pvc-2a8a7815-9b8b-4be1-9cd1-4ffad8dbff16   1Gi        RWO            Delete           Bound    cloud-barista/docker-registry            standard                16m
pvc-2bedc82f-d948-443e-827c-bccfa746f135   8Gi        RWO            Delete           Bound    cloud-barista/data-cb-dragonfly-etcd-0   standard                17h
pvc-32485b45-a515-4146-b1bd-3a4b7db099e1   8Gi        RWO            Delete           Bound    cloud-barista/cb-dragonfly-influxdb      standard                16m
pvc-6ec3adda-ca32-4e13-9cd8-a5f361d9cda2   1Gi        RWX            Delete           Bound    cloud-barista/cb-tumblebug               standard                33m
pvc-cf999e6c-fd24-45c7-9921-8b1e9592f2be   8Gi        RWO            Delete           Bound    cloud-barista/cb-restapigw-influxdb      standard                16m
pvc-dac064d0-d51e-49ef-819b-dc3d0b363644   1Gi        RWX            Delete           Bound    cloud-barista/cb-spider                  standard                83m

❯ kubectl get pvc -n cloud-barista
NAME                       STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   AGE
cb-dragonfly-influxdb      Bound    pvc-32485b45-a515-4146-b1bd-3a4b7db099e1   8Gi        RWO            standard       17m
cb-restapigw-influxdb      Bound    pvc-cf999e6c-fd24-45c7-9921-8b1e9592f2be   8Gi        RWO            standard       17m
cb-spider                  Bound    pvc-dac064d0-d51e-49ef-819b-dc3d0b363644   1Gi        RWX            standard       84m
cb-tumblebug               Bound    pvc-6ec3adda-ca32-4e13-9cd8-a5f361d9cda2   1Gi        RWX            standard       34m
data-cb-dragonfly-etcd-0   Bound    pvc-2bedc82f-d948-443e-827c-bccfa746f135   8Gi        RWO            standard       17h
docker-registry            Bound    pvc-2a8a7815-9b8b-4be1-9cd1-4ffad8dbff16   1Gi        RWO            standard       17m

---

[When CB Helm chart is uninstalled] (./operator stop)

❯ kubectl get pv -n cloud-barista 
NAME                                       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                                    STORAGECLASS   REASON   AGE
pvc-2bedc82f-d948-443e-827c-bccfa746f135   8Gi        RWO            Delete           Bound    cloud-barista/data-cb-dragonfly-etcd-0   standard                17h
pvc-6ec3adda-ca32-4e13-9cd8-a5f361d9cda2   1Gi        RWX            Delete           Bound    cloud-barista/cb-tumblebug               standard                36m
pvc-dac064d0-d51e-49ef-819b-dc3d0b363644   1Gi        RWX            Delete           Bound    cloud-barista/cb-spider                  standard                86m

❯ kubectl get pvc -n cloud-barista
NAME                       STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   AGE
cb-spider                  Bound    pvc-dac064d0-d51e-49ef-819b-dc3d0b363644   1Gi        RWX            standard       87m
cb-tumblebug               Bound    pvc-6ec3adda-ca32-4e13-9cd8-a5f361d9cda2   1Gi        RWX            standard       37m
data-cb-dragonfly-etcd-0   Bound    pvc-2bedc82f-d948-443e-827c-bccfa746f135   8Gi        RWO            standard       17h

[seokho-son]

@jihoon-seo
It looks good 👍
Can we remove the pv and pvc with "./operator remove" command ?

[jihoon-seo]

@seokho-son
2nd commit (fa24baf) adds PV+PVC removing feature.

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Note: The names of PVC to delete (cb-spider, cb-tumblebug, data-cb-dragonfly-etcd-0) is hard-coded in src/cmd/remove.go.

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Note: The names of PVC to create (cb-spider, cb-tumblebug, data-cb-dragonfly-etcd-0) is determined in

• CB-Spider: https://github.com/cloud-barista/cb-operator/pull/44/files#diff-51f16e33d1d5682f41004bb8f9e4b9c1R8
• CB-Tumblebug: https://github.com/cloud-barista/cb-operator/pull/44/files#diff-cd596f68eb7ea88320655e99c55d78a7R8
• data-cb-dragonfly-etcd-0: https://github.com/cloud-barista/cb-operator/blob/master/helm-chart/install/kubernetes/charts/cb-dragonfly/values.yaml (?)

[seokho-son]

@jihoon-seo For now, It seems ok, but it would be better to avoid hard-coding.