Since rolling update is not a feature supported by statefulsets, thought of experimenting with hybrid pods where the seed nodes would be statefulsets and the other non-seed nodes would be deployments. I was trying out this link as suggested in another question : Statfulsets - akka clustering Is there a way I can expose the seed and the non-seed nodes as the same service so that they can be hit with a single external IP?
That's possible when using labels properly...
For the seed nodes use sth like this:
apiVersion: apps/v1beta1
kind: StatefulSet
...
spec:
serviceName: akka-seed
selector:
matchLabels:
run: akka-seed
template:
metadata:
labels:
run: akka-seed
app: akkaFor the worker nodes use sth like this:
apiVersion: apps/v1beta1
kind: Deployment
...
spec:
template:
metadata:
labels:
run: akka-worker
app: akkaIn the service you can then reference both through:
apiVersion: v1
kind: Service
metadata:
name: akka
spec:
ports:
...
selector:
app: akka
This would select pods from both groups.