[web/task split] Add web and task replicas to the CRD

[thedoubl3j]

SUMMARY

Add the ability to toggle replica count for web and task separately with web_replica task_replica or set the count as the same with replicas

Portion of #1182

ISSUE TYPE

• New or Enhanced Feature

TESTING

The expectation of how the changes should work is that if desired, the user should be able to scale the numbers web and task replicas independently from each other or scale all replicas across all pods at the same rate.

test case 1: 1 task replica and 2 web replicas
CRD change:

  replicas: 1 
  web_replicas: 2

result

➜  awx-operator git:(add_replicas) ✗ kubectl get pods -w
NAME                                               READY   STATUS    RESTARTS   AGE
awx-operator-controller-manager-6ddd8c4bf7-bvnfq   2/2     Running   0          3m29s
awx-postgres-13-0                                  1/1     Running   0          4m21s
awx-task-9896478bd-qzwrc                           4/4     Running   0          4m22s
awx-web-56966cb4d5-bcbf6                           3/3     Running   0          12s
awx-web-56966cb4d5-hk78m                           3/3     Running   0          4m22s

test case 2: 2 task replicas and 1 web replica
CRD change:

  replicas: 1 
  task_replicas: 2

result

➜  awx-operator git:(add_replicas) ✗ kubectl get pods
NAME                                               READY   STATUS    RESTARTS   AGE
awx-operator-controller-manager-6ddd8c4bf7-bvnfq   2/2     Running   0          11m
awx-postgres-13-0                                  1/1     Running   0          12m
awx-task-9896478bd-mqs5d                           4/4     Running   0          15s
awx-task-9896478bd-qzwrc                           4/4     Running   0          12m
awx-web-56966cb4d5-hk78m                           3/3     Running   0          12m

test case 3: all replicas scaled to 3
CRD change:

  replicas: 3

result

➜  awx-operator git:(add_replicas) ✗ kubectl get pods
NAME                                               READY   STATUS    RESTARTS   AGE
awx-operator-controller-manager-6ddd8c4bf7-bvnfq   2/2     Running   0          17m
awx-postgres-13-0                                  1/1     Running   0          18m
awx-task-9896478bd-mqs5d                           4/4     Running   0          6m42s
awx-task-9896478bd-qzwrc                           4/4     Running   0          18m
awx-task-9896478bd-r9rjc                           4/4     Running   0          33s
awx-web-56966cb4d5-7dwr6                           3/3     Running   0          39s
awx-web-56966cb4d5-hk78m                           3/3     Running   0          18m
awx-web-56966cb4d5-mv6dk                           3/3     Running   0          39s

test case 4: set replicas to 0 to test default behavior
CRD change:

replicas: 0

result

➜  awx-operator git:(add_replicas) ✗ kubectl get pods
NAME                                               READY   STATUS    RESTARTS   AGE
awx-operator-controller-manager-697d47bcdb-x5bzb   2/2     Running   0          12m
awx-postgres-13-0                                  1/1     Running   0          8m27s
awx-task-9896478bd-g8h8k                           4/4     Running   0          7m41s
awx-web-56966cb4d5-5xk9w                           3/3     Running   0          8m7s

[TheRealHaoLiu]

@thedoubl3j have you tested this?

awx-operator/config/crd/bases/awx.ansible.com_awxs.yaml

Lines 1436 to 1450 in 4b2b3af

	replicas:
	description: Number of instance replicas
	type: integer
	default: 1
	format: int32
	web_replicas:
	description: Number of web instance replicas
	type: integer
	default: 1
	format: int32
	task_replicas:
	description: Number of task instance replicas
	type: integer
	default: 1
	format: int32

i dont think this would work since there's also default in the crd

which means that replicas will never have any effect

[thedoubl3j]

@TheRealHaoLiu yes but I did it buy over riding the default and removing them. those have been removed by default

[gamuniz]

just for grins, did you also try passing the spec without any replicas?

[thedoubl3j]

@gamuniz yes, default persisted and replicas remained at 1. the CRD does still reflect 0 but still have

➜  awx-operator git:(add_replicas) ✗ kubectl get pods
NAME                                               READY   STATUS    RESTARTS   AGE
awx-operator-controller-manager-697d47bcdb-x5bzb   2/2     Running   0          12m
awx-postgres-13-0                                  1/1     Running   0          8m27s
awx-task-9896478bd-g8h8k                           4/4     Running   0          7m41s
awx-web-56966cb4d5-5xk9w                           3/3     Running   0          8m7s

[gamuniz]

LGTM