Kubernetes Metrics server

• Refer Here

Kubernetes HPA and VPA

• To use HPA (Horizontal Pod Autoscaler) or VPA (Vertical Pod Autoscaler) we need metrics server to be enabled
• Basic Algorithm is used for scaling which scales up immedietly and scales down after 5 minutes.
• Refer Here for the changes done in the class

Volumes or Persistence in k8s

• Kubernetes supports two types of Volumes
  • Ephemeral Volumesc: They are available as long as Pod is alive
  • Persistent Volumes: These are volumes which have lifetime independent of Pod
• Lets discuss Persistent Volumes
• For relation between PV, PVC, SC and CSI-Driver watch classroom video
  
• List of CSI Drivers Refer Here
• PVs
• Access Modes

Lets create a mysql pod with a persistent volume of size 1Gi

• Refer Here for sample