Getting UnknownHostException: kubernetes.default.svc.cluster.local when using hostNetwork

[camer314 <ca...@towerswatson.com>]

Hello,

I have setup a Kubernetes environment with auto discovery and the nodes are
able to find one another no problem. I did have several issues along the way
which this forum has helped resolve, including some modifications to YAML
that differ from those from the Ignite docs.

However, now when I set /hostNetwork: true/, I am getting

*UnknownHostException: kubernetes.default.svc.cluster.local*

If i remove the hostNetwork condition then it all starts to work again.

What is so different about this setting? I thought this was something
standard in Kubernetes/Docker?

This is the fragment of my deployment that is relevant:

spec:
      #hostNetwork: true
      serviceAccountName: ignite
      containers:
        # Custom Ignite pod name.
      - name: ignite-node
        image: apacheignite/ignite:2.4.0



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Re: Getting UnknownHostException: kubernetes.default.svc.cluster.local when using hostNetwork

[camer314 <ca...@towerswatson.com>]

I found a solution to this which you might want to update your documentation
with.

The answer is to add a dnsPolicy for the pod along with hostNetwork, as per
below:

spec:
      hostNetwork: true
      dnsPolicy: ClusterFirstWithHostNet
      serviceAccountName: ignite
      containers:
        # Custom Ignite pod name.
      - name: ignite-node



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