[release-v1.40] Default calico-node to the node's own DNS resolver - #5249
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caseydavenport merged 2 commits intoSep 1, 2026
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calico-node runs before CNI is installed, so cluster DNS is not reachable when it starts. It now inherits the operator's DNS settings only when the operator has an explicit dnsConfig.
The installation controller reads the crd.projectcalico.org/v1 FelixConfiguration, and sets the degraded message and the error separately.
rene-dekker
approved these changes
Sep 1, 2026
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Description
Backport of #5246.
calico-node runs before CNI is installed, so cluster DNS is not reachable on the node when it starts. It inherited the operator's
ClusterFirstWithHostNetpolicy, leaving the CoreDNS ClusterIP as its only resolver, which deadlocks the rollout on a cluster where the Kubernetes API server is reachable only by name. It defaults to the node's own resolver instead, and inherits the operator's DNS settings only when the operator has an explicitdnsConfig.Release Note