Service restart script for Let's encrypt renewal hooks (deploy)

deploy-hook.sh

#!/bin/bash

SERVICE_NAME=postfix
SERVICE_DOMAINS=example.com

IS_ACTIVE=$(systemctl is-active ${SERVICE_NAME})
if [ "${IS_ACTIVE}" != "active" ]; then
  exit 0
fi

RESTART=0

for rdomain in ${RENEWED_DOMAINS}; do
  for sdomain in ${SERVICE_DOMAINS}; do
    if [ "${rdomain}" = "${sdomain}" ]; then
      RESTART=1
      break 2
    fi
  done
done

if [ ${RESTART} -eq 0 ]; then
  exit 0
fi

# SSL certificate for ${SERVICE_NAME} was modified.
systemctl restart ${SERVICE_NAME}
exit $?