mount-s3 on Amazon Linux 2 connection watchdog script

mount-s3-watchdog.sh

#!/bin/bash
#
# mount-s3-watchdog.sh
# Inspiration from https://github.com/s3fs-fuse/s3fs-fuse/issues/152
# Run from the root user's crontab to keep an eye on mount-s3 which should always
# be mounted.
#
# Note:  If getting the amazon S3 credentials from environment variables
#   these must be entered in the actual crontab file (otherwise use one
#   of the s3fs other ways of getting credentials).
#
# Example:  To run it once every minute getting credentials from envrironment
# variables enter this via "sudo crontab -e":
#
#   AWSACCESSKEYID=XXXXXXXXXXXXXX
#   AWSSECRETACCESSKEY=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
#   * * * * * /root/mount-s3-watchdog.sh
#
# every ten minutes: */10 * * * * /root/mount-s3-watchdog.sh

NAME=mount-s3
BUCKET=<bucket name>
MOUNTPATH=<mount point>
MOUNT=/bin/mount
UMOUNT=/bin/umount
GREP=/bin/grep
PS=/bin/ps
NOP=/bin/true

# Check if mount-s3 for your bucket is running
$PS -ef | $GREP -v grep | $GREP $NAME | grep $BUCKET >/dev/null 2>&1
case "$?" in
0)
  # It is running in this case so we do nothing.
  # echo "$NAME is RUNNING for bucket $BUCKET. Doing Nothing." >/tmp/watchdogmount.out
  $NOP
  ;;
1)
  echo "$NAME is NOT RUNNING for bucket $BUCKET. Remounting $BUCKET with $NAME." >>/root/watchdogmount.out
  fusermount -uz $MOUNTPATH >/dev/null 2>&1
  mount-s3 --allow-other --allow-delete --dir-mode 777 $BUCKET $MOUNTPATH >>/root/watchdogmount.out
  ;;
esac

exit