Error creating: admission webhook "namespace.sidecar-injector.istio.io" denied the request: failed to run injection template: template: inject:212:12: executing "inject" at <.EstimatedConcurrency>: can't evaluate field EstimatedConcurrency in type *inject.SidecarTemplateData

 Problem:

Error creating: admission webhook "namespace.sidecar-injector.istio.io" denied the request: failed to run injection template: template: inject:212:12: executing "inject" at <.EstimatedConcurrency>: can't evaluate field EstimatedConcurrency in type *inject.SidecarTemplateData

Solution:

In vaulues.yaml, make below change:

pilot:

  # Can be a full hub/image:taggcr.io/istio-release

  image: gcr.io/istio-release/pilot:1.16.5

Kubernetes Pod Readiness Probe

Readiness Probe: 

1. httpGet 

readinessProbe:

  httpGet:

    path: /api/ready

    port: 8080

2. tcpSocket:

readinessProbe:
  topSocket:
    port:3306

3. command

readinessProbe:

  exec:

    command:

       - cat

      -/app/is_ready

Liveness Probe:

 1. httpGet 

livenessProbe:
  httpGet:
    path: /api/ready
    port: 8080 
  initialDelaySeconds: 10 
  periodSeconds: 5 
  failureThreshold: 8 

 

 

2. tcpSocket:

livenessProbe:
  topSocket:
    port:3306

3. command

livenessProbe:

  exec:

    command:

       - cat

      -/app/is_ready