kubectl run with PVCs

kubectl-run-with-pvc.sh

#!/bin/bash

IMAGE="registry.begasoft.ch/base_images_public/bgstoolbox:0"
COMMAND="/bin/sh"
SUFFIX=$(date +%s | shasum | base64 | fold -w 10 | head -1 | tr '[:upper:]' '[:lower:]')
AWSKEY="none"
AWSSEC="none"

usage_exit() {
    echo "Usage: $0 [-c command] [-i image] [-a <AWSKEY>:<AWSSEC>]PVC ..." 1>&2
    echo ""
    echo "Example to list files:"
    echo "./kubectl-run-with-pvc.sh -c \"ls -al /pvcs/<pvc>\" <pvc>"
    echo ""
    echo "Example to copy files to S3:"
    echo "./kubectl-run-with-pvc.sh -c \"aws --endpoint-url <url>  s3 cp /pvcs/<pvc>/ s3://<bucket> --recursive\" -a \"<AWSKEY>:<AWSSEC>\" <pvc>"
    echo ""
    exit 1
}

while getopts i:c:a:h OPT
do
    case $OPT in
        i)  IMAGE=$OPTARG
            ;;
        c)  COMMAND=$OPTARG
            ;;
        a)  AWSVAR=$OPTARG
            ;;
        h)  usage_exit
            ;;
        \?) usage_exit
            ;;
    esac
done
shift $(($OPTIND - 1))

VOL_MOUNTS=""
VOLS=""
COMMA=""

for i in $@
do
  VOL_MOUNTS="${VOL_MOUNTS}${COMMA}{\"name\": \"${i}\",\"mountPath\": \"/pvcs/${i}\"}"
  VOLS="${VOLS}${COMMA}{\"name\": \"${i}\",\"persistentVolumeClaim\": {\"claimName\": \"${i}\"}}"
  COMMA=","
done

if [[ ! -z "$AWSVAR" ]]
then
    AWSKEY=`echo ${AWSVAR} | awk -F ":" '{print $1}'`
    AWSSEC=`echo ${AWSVAR} | awk -F ":" '{print $2}'`
fi


ARGS=`echo $COMMAND | jq -cR 'split(" ")'`

kubectl run -it --rm --restart=Never --image=${IMAGE} pvc-mounter-${SUFFIX} --overrides "
{
  \"spec\": {
    \"hostNetwork\": true,
    \"containers\":[
      {
        \"args\": ${ARGS},
        \"stdin\": true,
        \"tty\": true,
        \"name\": \"pvc\",
        \"image\": \"${IMAGE}\",
        \"env\": [
          {\"name\": \"AWS_ACCESS_KEY_ID\",\"value\": \"${AWSKEY}\"},{\"name\": \"AWS_SECRET_ACCESS_KEY\",\"value\": \"${AWSSEC}\"}
        ],        
        \"volumeMounts\": [
          ${VOL_MOUNTS}
        ]
      }
    ],
    \"volumes\": [
      ${VOLS}
    ]
  }
}
" -- ${COMMAND}