copy_cm_func.sh

#!/bin/sh
# Copy configmap and secret from one namespace to another.
# ./copy_cm_func.sh <resource> <configmap_name> <source_namespace> <destination_namespace> [name]
# Parameters:
#   resource: configmap|secret
#   name: Optional new name of the configmap or secret in destination namespace.  This may be needed if there is
#         clash of names

if [ $1 = "configmap" ]
then
  RESOURCE=configmap
elif [ $1 = "secret" ]
then
  RESOURCE=secret
else
  echo "Incorrect resource $1. Exiting.."
  exit 1
fi


if [ $# -ge 5 ]
then
   kubectl -n $4 delete --ignore-not-found=true $RESOURCE $5
   kubectl -n $3 get $RESOURCE $2 -o yaml | sed "s/namespace: $3/namespace: $4/g" | sed "s/name: $2/name: $5/g" | kubectl -n $4 create -f -  
else
   kubectl -n $4 delete --ignore-not-found=true $RESOURCE $2
   kubectl -n $3 get $RESOURCE $2 -o yaml | sed "s/namespace: $3/namespace: $4/g" |  kubectl -n $4 create -f -  
fi