[Question] Can multi weave flux shares the same memcached services

[haofeif]

Hi,

I am implementing the multi-tenancy via weave flux operators. My approach is the same, a cluster repo--> a cluster flux operator, and a namespace -> a namespace flux operator.

However, given that I do not want the flux operator be able to deleted or modified by mistakes by the namespace users, i decided to put all the namespace flux operators in the namesapce flux as below:

$ kubectl get pods -n flux
NAME                          READY   STATUS    RESTARTS   AGE
demo2-flux-5c5f58f547-zvjb5   1/1     Running   0          5m23s
flux-6f6d459df5-jsqld         1/1     Running   0          9h
memcached-7b4c8bd545-5ks9g    1/1     Running   0          2d8h

demo2 is the namespace name, which I use the below to get it working

---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: RoleBinding
metadata:
  labels:
    name: demo2-flux
  name: demo2-flux
  namespace: demo2
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: flux
subjects:
  - kind: ServiceAccount
    name: demo2-flux
    namespace: flux
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: Role
metadata:
  labels:
    name: demo2-flux-secrets
  name: demo2-flux-secrets
  namespace: flux
rules:
  - apiGroups: [""]
    resources: ["secrets"]
    verbs: ["get", "watch", "list"]
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: RoleBinding
metadata:
  labels:
    name: demo2-flux-secrets
  name: demo2-flux-secrets
  namespace: flux
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: flux
subjects:
  - kind: ServiceAccount
    name: demo2-flux
    namespace: flux

Obviously, in this case all the flux operators are sharing with one memcached services (pod). My question is, what will be some of the considerations for working with one memcached services ?

[stefanprodan]

Yes sharing the same cache is encouraged, the multi-tenancy does it here https://github.com/fluxcd/multi-tenancy/blob/master/cluster/team1/flux-patch.yaml#L12