TCP checks

Kubernetes also supports health checks via simple TCP socket checks and also with custom command-line scripts.

The following snippets are examples of what both use cases look like in the YAML file. 

Health check using command-line script:

livenessProbe: 
  exec: 
    command: 
    -/usr/bin/health/checkHttpServce.sh 
  initialDelaySeconds:90 
  timeoutSeconds: 1

Health check using simple TCP Socket connection:

livenessProbe: 
  tcpSocket: 
    port: 80 
  initialDelaySeconds: 15 
  timeoutSeconds: 1