1u0 commented on a change in pull request #9470: [FLINK-13380][k8s] Improve the
usability of Flink session cluster on Kubernetes
URL: https://github.com/apache/flink/pull/9470#discussion_r315612373
##########
File path: docs/ops/deployment/kubernetes.md
##########
@@ -166,18 +249,34 @@ kind: Service
metadata:
name: flink-jobmanager
spec:
+ type: ClusterIP
ports:
- name: rpc
port: 6123
- name: blob
port: 6124
- - name: query
- port: 6125
- name: ui
port: 8081
selector:
app: flink
component: jobmanager
{% endhighlight %}
+`jobmanager-rest-service.yaml`. Optional service, which is used to add a
`NodePort` on the jobmanager rest service so that user could submit job via
`<public-node-ip>:<node-port>`.
Review comment:
My reasoning, that there maybe two types of readers of this docs:
* people like devs, who have a test K8s cluster and want to setup
test/experimental Flink cluster. For this, I assume they can run `kubectl
port-forward|proxy` and also create resources by `kubectl`. For them the
existing means should be already enough to make Flink JM available from a local
dev machine. Showing them method that exposes `NodePort` would be like giving a
poor example;
* people like ops, that operate production K8s cluster. In that case they
are probably knowledgeable enough how to expose a service properly.
There are some blog posts in internet, for example [this
one](https://medium.com/google-cloud/kubernetes-nodeport-vs-loadbalancer-vs-ingress-when-should-i-use-what-922f010849e0)
that give some information what are the different ways and in which situations
to make service available outside of K8s cluster.
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