Fixed DNS bug preventing pods from talking.

ServiceWeaver / weaver-kube

Run Service Weaver applications on vanilla Kubernetes.

Apache License 2.0

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Fixed DNS bug preventing pods from talking. #61

Closed mwhittaker closed 1 year ago

mwhittaker commented 1 year ago

@rgrandl pointed out that main components were failing to push traces to jaeger, causing them to crash. I did some debugging and found that the DNS policy we were using was preventing pods from resolving service names. I have no idea why.

This PR fixes the bug by switching to the ClusterFirst DNS policy. Quite counterintuitively, ClusterFirst is the default policy, not Default.

mwhittaker commented 1 year ago

@rgrandl, @spetrovic77 do you understand Kubernetes well enough to understand what was going wrong? I'm having a hard time understanding the different DNS policies.