Pod Disruption Budget - CI/CD Glossary Definition
A pod disruption budget limits how many pods of an application can be voluntarily evicted at once (during node drains or upgrades), keeping a minimum number available. It does not protect against involuntary failures like a node crash.
Why it matters
During a cluster upgrade in CD, a PDB ensures rolling node drains never take a service below its minimum healthy replicas, avoiding self-inflicted outages.
Related guides
Deployment Strategy - CI/CD Glossary DefinitionDeployment Strategy: A deployment strategy is how a new version replaces the old one. The two built-in Kubern…
Rolling Update - CI/CD Glossary DefinitionRolling Update: A rolling update replaces pods incrementally, bringing up new ones and tearing down old ones…
ReplicaSet - CI/CD Glossary DefinitionReplicaSet: A ReplicaSet keeps a specified number of identical pod replicas running, replacing any that die.…