Slow Agents: Use light-weight agent images and assign proper resources.
Delay caused while scheduling the pod: Assign node affinity, toleration, and autoscale nodes.
Network issues: Check service account permissions and network policies.
Storage issues: Use Persistent Volume Claim (PVCs) for jenkins home.
Plugin Issues: Update plugins and try to remove unrequired ones.
Debugging: Check the logs of jenkins and agent pods using kubectl
Best Practices
• Scalable clusters should be used.
• Declarative pipelines should be followed.
• Use RBAC end.