fix: enable LeaderElectionReleaseOnCancel for rolling updates#64
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Port of upstream PR cloudnative-pg#615. Without this flag, RollingUpdate causes deadlock — old pod holds leader lease preventing new pod from becoming ready. Signed-off-by: ermakov-oleg <ermakovolegs@gmail.com>
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Summary
Port of upstream #615
Enables
LeaderElectionReleaseOnCancel: truein the controller manager options.Problem: During rolling updates of the operator deployment, the old pod holds the leader election lease until it expires (default 15s). This means the new pod cannot start reconciliation until the lease times out, causing a gap in controller activity.
Fix: Setting
LeaderElectionReleaseOnCancel: truemakes the old leader release the lease immediately on context cancellation (graceful shutdown), so the new pod can acquire leadership instantly.