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Add brackets around IPv6 kube-dns liveness probe addrs #56544

Merged
merged 1 commit into from
Nov 29, 2017
Merged

Add brackets around IPv6 kube-dns liveness probe addrs #56544

merged 1 commit into from
Nov 29, 2017
+9 −5

Commits on Nov 29, 2017

  1. Add brackets around IPv6 kube-dns liveness probe addrs 

    When a Kubernetes cluster is instantiated in IPv6-only mode
via 'kubeadm init ...', the liveness probes that are
configured by kubeadm for kube-dns currently use IP:port
strings of "::1:53" and "::1:10053". These IP:port strings should
instead include brackets around the ::1 IPv6 loopback address, e.g.
"[::1]:53" and "[::1]:10053".

This change adds the necessary brackets around the ::1 IPv6 loopback
address.

Without this change, the kube-dns sidecar container interprets the
bracket-less strings as IPv4 IP:port strings that have too many
colons, and the kube-dns pod is restarted about once every 2 minutes.

fixes kubernetes#56543

/area ipv6
/sig network
    Dane LeBlanc committed Nov 29, 2017
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