backup

gcloud

#!/usr/bin/env bash

create_backup_account() {
  PROJECT_NAME=$1
  SERVICE_ACCOUNT_NAME=$2
  
  SERVICE_ACCOUNT=${SERVICE_ACCOUNT_NAME}@${PROJECT_NAME}.iam.gserviceaccount.com
  gcloud iam service-accounts \
          create ${SERVICE_ACCOUNT_NAME} \
          --display-name "Backup service"
  gcloud projects add-iam-policy-binding ${PROJECT_NAME} \
          --member serviceAccount:${SERVICE_ACCOUNT} \
          --role roles/storage.objectCreator \
          --role roles/storage.objectViewer \
          --role roles/storage.objectAdmin \
          --role roles/storage.admin
}

install() {
  SERVICE_ACCOUNT_NAME=$2
  INSTANCE_NAME=$3

  # assign service account to an instance
  INSTANCE_NAME=redis-backend-prod
  gcloud compute instances stop $INSTANCE_NAME
  gcloud compute instances set-service-account $INSTANCE_NAME \
          --service-account=${SERVICE_ACCOUNT} \
          --scopes=storage-rw
  gcloud compute instances start $INSTANCE_NAME
}

case $1 in
  create_backup_account)
    create_backup_account $2 $3
    ;;
  install)
    install $2 $3
    ;;
  *)
    echo "gcloud_helper create_backup_account PROJECT_NAME SERVICE_ACCOUNT_NAME"
    echo "e.g: gcloud_helper create_backup_account tkn backup"
    echo "gcloud_helper install PROJECT_NAME SERVICE_ACCOUNT_NAME INSTANCE_NAME"
    echo "e.g: gcloud_helper install backup redis-backend-prod"
    ;;
esac

jarvis

#!/usr/bin/env bash

HOSTNAME=$(hostname)

backup() {
	GCLOUD_BACKUP_BUCKET=$1
	FOLDER=$2
	CURRENT_DATE=$(date +"%Y%m%d-%H%M")
	FILE_NAME=backup.${CURRENT_DATE}.tar.gz
	cd ${FOLDER}
	tar -zcf ${FILE_NAME} .
	gsutil cp ${FILE_NAME} gs://${GCLOUD_BACKUP_BUCKET}/${HOSTNAME}/${FILE_NAME}
	rm -rf ${FILE_NAME}
}

restore() {
	GCLOUD_BACKUP_BUCKET=$1
	FOLDER=$2
	FILE_NAME=backup.$3.tar.gz
	cd $FOLDER
	tar -zcf old.tar.gz .   
	gsutil cp gs://${GCLOUD_BACKUP_BUCKET}/${HOSTNAME}/${FILE_NAME} ${FILE_NAME}
	tar -xvf ${FILE_NAME}
}

init() {
	GCLOUD_BACKUP_BUCKET=$2
	FOLDER=$3
	CRON_PATTERN=$(echo "$4")
	COMMAND="$(pwd)/jarvis backup ${GCLOUD_BACKUP_BUCKET} $FOLDER"
	{ crontab -l; echo "${CRON_PATTERN} ${COMMAND}"; } | crontab -
}

case $1 in
	backup)
		backup $2 $3
		;;
	restore)
		restore $2 $3 $4
		;;
	init)
		init "$@"
		;;
	*)
		echo "Backup script"
		echo "Usage"
		echo "   1. jarvis init CRON_PATTERN GCLOUD_BACKUP_BUCKET FOLDER"
		echo "   E.g:  jarvis init tkn-backup /var/www/redis \"0 19 * * *\""
		echo ""
		echo "   2. jarvis backup GCLOUD_BACKUP_BUCKET FOLDER"
		echo "   E.g jarvis backup tkn-backup /var/www/redis"
		echo ""
		echo "   3. jarvis restore GCLOUD_BACKUP_BUCKET FOLDER DATETIME"
		echo "   E.g jarvis restore tkn-backup /var/www/redis 20180302-1212"
		;;
esac