Apply RDS Deletion Protection

rds-apply-del-pro.sh

#!/bin/bash

# Enable extended globbing for the +(...) pattern
shopt -s extglob

## Variable Declartions ##
OUTPUT="text"      # set output format

## FUNCTIONS ##
# apply Instance DB deletion protection
apply_instance_protection () {
  aws rds modify-db-instance --db-instance-id "$DB" \
  --deletion-protection --apply-immediately --region "$REG" --profile "$PRO" 1> /dev/null
}
# apply Cluster DB deletion protection
apply_cluster_potection () {
  aws rds modify-db-cluster --db-cluster-id "$CLUSTER" \
  --deletion-protection --apply-immediately --region "$REG" --profile "$PRO" 1> /dev/null
}

# apply deletion protection to cluster or instance
cluster_or_instance () {
  # get regions
  mapfile -t REGIONS < <( aws ec2 describe-regions --query "Regions[].{Name:RegionName}" \
  --region eu-west-1 --profile "$PRO" --output $OUTPUT )
  for REG in "${REGIONS[@]}"
  do
    mapfile -t DB_NAME < <( aws rds describe-db-instances --query "DBInstances[*].[DBInstanceIdentifier]" \
    --region "$REG" --profile "$PRO" --output $OUTPUT )
    if [ ${#DB_NAME[@]} -eq 0 ]
    then
      continue
    else
      for DB in "${DB_NAME[@]}"
      do
        # determine if instance is in a cluster
        CLUSTER=$(aws rds describe-db-instances --db-instance-id "$DB" --query "DBInstances[*].DBClusterIdentifier" \
        --region "$REG" --profile "$PRO" --output $OUTPUT)
        if [ -z "$CLUSTER" ]
        then
          apply_instance_protection
        else
          apply_cluster_potection
        fi
      done
    fi
  done
}

# main menu function
main_menu () {
  clear
  # display profiles list menu
  mapfile -t PROFILES < <(cat .aws/config | cut -f 2 -d ' ' | sed 's/]//' | sort -f)
  PS3="Select Profile number: "
  # make a dummy array which includes the values
  validOptions=${PROFILES[0]};
  for ((i=1; i<${#PROFILES[@]}; i++)); do
    validOptions="$validOptions|${PROFILES[i]}"
  done
  # show main menu
  select PRO in "${PROFILES[@]}" "exit"
  do
    case $PRO in
      +($validOptions))
      cluster_or_instance
      break
      ;;
      "exit")
      echo "Exiting..."
      exit
      ;;
      *)
      echo "Invalid option $PRO, try again..."
    esac
  done
}

## SCRIPT COMMANDS ##
main_menu