Workload Functions

PDB Operator classifies workloads into three functions, each with different PDB behavior.

Functions

Function	Description	PDB Behavior
core	Standard application workloads	Normal availability class applied
management	Infrastructure and management workloads	Normal availability class applied
security	Security-critical workloads (auth, certificates, firewalls)	Automatic availability class boosting

Setting the Function

Via Policy Selector

Target workloads by function in the policy's workload selector:

spec:
  workloadSelector:
    workloadFunctions:
      - security

Via Deployment Annotation

Set the function directly on a deployment:

metadata:
  annotations:
    pdboperator.io/workload-function: "security"

Security Boosting

When a workload's function is security, its availability class is automatically boosted:

• non-critical (20%) becomes standard (50%)
• standard (50%) becomes high-availability (75%)
• high-availability and mission-critical remain unchanged

This ensures security workloads always have higher protection without requiring manual configuration.

Related

• Availability Classes: the full boosting table and class definitions
• Annotations Reference: setting workload function via annotations
• Policy Examples: policies targeting specific workload functions