Merge kubeernetes cube config files into a single file.

konfig_merger.sh

#!/bin/bash

show_usage() {
    echo "Usage: $0 <config1> <config2> ..."
    echo "This script will merge config1, config2, ... into a single config file in current directory"
    echo "The merged config file will be named as 'merged-kubeconfig'"
    echo "You can copy the merged config file to ~/kube/config to use it as your default kubeconfig"
}
if [ $# -lt 2 ]; then
    show_usage
    exit 1
fi

if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
    show_usage
    exit 0
fi

kube_config_files=""
for i in "$@"
do
    kube_config_files="$kube_config_files:$i"
done

# remove the first colon
kube_config_files=${kube_config_files:1}

# merge the kube config files
KUBECONFIG=$kube_config_files kubectl config view --flatten > merged-kubeconfig

echo "Merged kube config files: $kube_config_files"