kubernetes Deployment Failed to fetch Temporary failure resolving

IF you apt-get update in k8s Deployment yaml that containers command run it. Maybe get

Deployment Failed to fetch Temporary failure resolving

So just put this line before script

  
- /bin/bash  
- -c  
- |  
  echo nameserver 8.8.8.8 >> /etc/resolv.conf  
  apt-get update  

Usually you get this problem because try to transfer Dockerfile / docker-compose directory to ConfigMap and Deployment YAML. Dockerfile have apt-get update that get problem.