Find a Kubernetes Pod by Label Selector and Port-forward Locally
Given a namespace "your-namespace" and a label query that identifies the
pods you are interested in connect to a particular pod instance. If the
label selector doesn't find a unique pod it will connect to the first pod
by name. Ensure you replace 8080 with your pod's port.
kubectl -n your-namespace get pods -n your-namespace -l run=hello-world -o
jsonpath='{.items[1].metadata.name}' | xargs -I{} kubectl -n your-namespace
port-forward {} 8080
On Wed, May 31, 2017 at 1:43 AM <george.pu...@gmail.com> wrote:
> Hello everybody,
>
> I've setup a 3 node kafka cluster running on kubernetes using stateful
> sets and headless services.
> The problem is now I want read/write data from/to the cluster from outside
> the cluster.
> I have found a couple of suggestions here
> https://stackoverflow.com/questions/41868161/kafka-in-kubernetes-cluster-how-to-publish-consume-messages-from-outside-of-kub
> .
>
> Essentially, I've found 2 options:
> 1. Use hostNetwork: true when starting the kafka container and use as
> ADVERTISED_HOST in kafka the kubernetes worker node - this has
> 2. Use Services type NodePort to expose the kafka broker port to the
> outside world - drawback here is that it will open a port on all worker
> nodes and second the request will go through the kube proxy
>
> On top of this I still need to sync my external dns system with the
> dns of the kafka worker nodes.
>
> Could anyone share their experience on how they achieved this?
>
> Thanks,
> George
>
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