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wait for control plane node to become ready after joining (#12923)

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When joining a control plane node and "upgrading" the cluster setup (for
example, to update etcd addresses after adding a new etcd) in the same
playbook run, the node can take a bit of time to become ready after
joining.
This triggers a kubeadm preflight check (ControlPlaneNodesReady) in
kubeadm upgrade, which is run directly after the join tasks.

Add a configurable wait for the control plane node to become Ready to
fix this race condition.

Co-authored-by: Max Gautier <mg@max.gautier.name>
This commit is contained in:
k8s-infra-cherrypick-robot
2026-01-29 02:19:50 -08:00
committed by GitHub
parent 5ee67297bc
commit 46a1b887cd
2 changed files with 18 additions and 0 deletions
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3
roles/kubernetes/control-plane/defaults/main/main.yml
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@@ -2,6 +2,9 @@
# disable upgrade cluster
upgrade_cluster_setup: false
# Number of retries (with 5 seconds interval) to check that new control plane nodes
# are in Ready condition after joining
control_plane_node_become_ready_tries: 24
# By default the external API listens on all interfaces, this can be changed to
# listen on a specific address/interface.
# NOTE: If you specific address/interface and use loadbalancer_apiserver_localhost