Update k8s_utils.bash script to remove statefulset pvc

[sankar-palanivel]

Applicable Issues

Fixes #59

Description of the Change

• The "eiffel-mongodb-eiffel" service deployed using "Deployment" kind, hence all of its pv/pvc resources will be remove as part of easy2use setup cleanup using "helm uninstall"
• Since the "eiffel-rabbitmq-eiffel" service in Eiffel easy2use is deployed using "Statefulset" kind, it is creating a unique pvc for each of its pod. These pvc's cannot be remove using "helm uninstall" as these pvc's are created/controlled by Statefulset,. Hence these pvc's can be deleted as part of the easy2use setup cleanup using native "kubectl" command under k8s cli utilities bash script.

Alternate Designs

The rabbitmq service deployment model can be changed from statefulset to Deployment kind, if needed

Benefits

This will be a proper cleanup of easy2use sandbox by removing all of its pv/pvc resources.

Possible Drawbacks

N/A

Sign-off

Developer's Certificate of Origin 1.1

By making a contribution to this project, I certify that:

(a) The contribution was created in whole or in part by me and I have the right to submit it under the open source license indicated in the file; or

(b) The contribution is based upon previous work that, to the best of my knowledge, is covered under an appropriate open source license and I have the right under that license to submit that work with modifications, whether created in whole or in part by me, under the same open source license (unless I am permitted to submit under a different license), as indicated in the file; or

(c) The contribution was provided directly to me by some other person who certified (a), (b) or (c) and I have not modified it.

(d) I understand and agree that this project and the contribution are public and that a record of the contribution (including all personal information I submit with it, including my sign-off) is maintained indefinitely and may be redistributed consistent with this project or the open source license(s) involved.

Signed-off-by: Sankar Palanivel sankar.palanivel@est.tech

[k-hallen-ericsson]

Good improvement, will not be able to test myself, maybe good with a reviewer with more insight than me when deleting things :)

[pef-ericsson]

PR has been tested on a remote Kubernetes cluster successfully.

Command

cmd = ./easy2use remove -t Kubernetes -d <_domain_> -n <_namespace_> -e </path/to/bundles> start Eiffel -y

Without PR code changes

After executing the cmd, the PVC data-eiffel-rabbitmq-oss-eiffel-0 was still there (not deleted).

With PR code changes

After executing the cmd, the PVC data-eiffel-rabbitmq-oss-eiffel-0 wasn't there (deleted). The following is a part of the cmd's response:

release "eiffel-mongodb-oss-eiffel" uninstalled
persistentvolumeclaim "eiffel-mongodb-oss-eiffel" deleted
.
.
.
release "eiffel-rabbitmq-oss-eiffel" uninstalled
persistentvolumeclaim "data-eiffel-rabbitmq-oss-eiffel-0" deleted

Kubernetes version

Client Version: version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.8", GitCommit:"4a3b558c52eb6995b3c5c1db5e54111bd0645a64", GitTreeState:"clean", BuildDate:"2021-12-15T14:52:11Z", GoVersion:"go1.16.12", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"22", GitVersion:"v1.22.17", GitCommit:"a7736eaf34d823d7652415337ac0ad06db9167fc", GitTreeState:"clean", BuildDate:"2022-12-08T11:42:04Z", GoVersion:"go1.16.15", Compiler:"gc", Platform:"linux/amd64"}