k8s pod 상태 체크 스크립트

pod_check.sh

#!/bin/bash


if [ -z "$1" ]; then
  echo "Error: labal app  name is not specified."
  exit 1
fi

if [ -z "$2" ]; then
  echo "Error : zone is not specified."
  exit 1
fi

APP_NAME=$1
ZONE=$2

pod_names=$(kubectl get pods --selector=app=${APP_NAME} --output=jsonpath='{.items[*].metadata.name}')

for pod_name in $pod_names
do
   ready_status=$(kubectl get pod $pod_name -o jsonpath="{.status.containerStatuses[0].ready}" | tr '[:upper:]' '[:lower:]')

   if [ -z "$ready_status" ]; then
      ready_status=$(kubectl get pod $pod_name -o jsonpath="{.status.conditions[0].status}" | tr '[:upper:]' '[:lower:]')
      message=$(kubectl get pod $pod_name -o jsonpath="{.status.conditions[0].message}" | sed "s/\"/'/g")
      reason=$(kubectl get pod $pod_name -o jsonpath="{.status.conditions[0].reason}")
   else
      message=$(kubectl get pod $pod_name -o jsonpath="{.status.containerStatuses[0].state.waiting.message}" | sed "s/\"/'/g")
      reason=$(kubectl get pod $pod_name -o jsonpath="{.status.containerStatuses[0].state.waiting.reason}")
   fi

   host_ip=$(kubectl get pod $pod_name -o jsonpath="{.status.hostIP}")
   node_name=$(kubectl get pod $pod_name -o jsonpath="{.spec.nodeName}")
   #cpu=$(kubectl top pod $pod_name 2>/dev/null | awk 'NR==2{print $2}')
   #memory=$(kubectl top pod $pod_name 2>/dev/null | awk 'NR==2{print $3}')
   pod_status=$(kubectl get pod $pod_name -o jsonpath="{.status.phase}")


   if [ -n "$ready_status" ] && [ "$ready_status" = "false" ]; then
      printf "Pod : %s$pod_name\nStatus : %s$pod_status\nMessage : $s$message\nReason : %s$reason\nHost IP : %s$host_ip\nNode Name : %s$node_name\n"
   fi

done


exit $?