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Allow distruption in single instance postgres 

- When PodDisruptionBudget is enabled at the controller level, it creates a PDB even for PostgreSQL deployments with numberOfInstances = 1. This prevents node draining and node rotation, since a single pod cannot meet the disruption requirements.

In real HA setups, PostgreSQL should have more than one instance. For single-instance deployments, setting the PDB to minAvailable = 0 avoids unnecessary blocking and makes cluster operations easier to manage.
This commit is contained in:
Vilvaramadurai 2025-11-14 16:46:24 +00:00
parent 31f474a95c
commit ed7bcf4575
1 changed files with 2 additions and 2 deletions
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4
pkg/cluster/k8sres.go
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@ -2212,8 +2212,8 @@ func (c *Cluster) generatePodDisruptionBudget() *policyv1.PodDisruptionBudget {
pdbEnabled := c.OpConfig.EnablePodDisruptionBudget
pdbMasterLabelSelector := c.OpConfig.PDBMasterLabelSelector
// if PodDisruptionBudget is disabled or if there are no DB pods, set the budget to 0.
if (pdbEnabled != nil && !(*pdbEnabled)) || c.Spec.NumberOfInstances <= 0 {
// if PodDisruptionBudget is disabled or if there are more than one DB pods, set the budget to 0.
if (pdbEnabled != nil && !(*pdbEnabled)) || c.Spec.NumberOfInstances <= 1 {
minAvailable = intstr.FromInt(0)
}