hack: make the kind cluster's IP family configurable - #877
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Yuan Gao (ygao-g) wants to merge 1 commit into
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hack: make the kind cluster's IP family configurable#877Yuan Gao (ygao-g) wants to merge 1 commit into
Yuan Gao (ygao-g) wants to merge 1 commit into
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IP_FAMILY selects ipv4, ipv6 or dual and becomes networking.ipFamily, leaving kind's per-family subnet defaults alone. The script also recreates a pre-IPv6 "kind" Docker network, fails fast if the daemon has IPv6 off, sets proxy_ndp alongside proxy_arp for gVisor pod-to-pod traffic, and repoints an ipv6 kubeconfig from [::1] at localhost so a client outside the Docker host can still reach the apiserver. Tested on kind with all three families: node InternalIPs, Service ClusterIPs and pod IPs land in the requested families, pod-to-pod and CoreDNS work on them, and pods still pull through the local registry.
Yuan Gao (ygao-g)
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Fixes #845
IP_FAMILYselectsipv4,dual, oripv6and passes this through to kind. To prevent insidious failures like pods stuck inContainerCreating, the script now drops old Docker networks to force IPv6 recreation if needed, validates the daemon's IPv6 support up-front, and enablesproxy_ndp(alongsideproxy_arp) to properly support gVisor loopback pod-to-pod networking across IPv6 nodes.Tested on kind with all three families: node InternalIPs, Service ClusterIPs and pod IPs land in the requested families, pod-to-pod and CoreDNS work on them, and pods still pull through the local registry.