xen xcp-ng – How to check if a server is up via ssh, and speak.sh if it’s down or back up

November 7, 2021 linux, xcp-ng

As the user (don’t need to be root).

# one time setup: 
echo "down" > xenstatus.txt

checkXenSsh.sh:

#!/bin/bash

# one time setup: echo "down" > xenstatus.txt

STATUSFILE=/home/pi/xenstatus.txt
LASTSTATUS=$(cat "$STATUSFILE")

# check connection
ssh -q root@xen.florida exit


# status of ssh is stored in $?
if [ `echo $?` = 255 ]; then
  nohup /opt/settings/scripts/speak.sh "zen server is down" >/dev/null 2>&1 &
  echo "down" > $STATUSFILE
else

  if [ "$LASTSTATUS" = "down" ]; then
    nohup /opt/settings/scripts/speak.sh "zen server is now back up and running" >/dev/null 2>&1 &
    echo "up" > $STATUSFILE
  fi

fi

Make it executable:

chmod u+x checkXenSsh.sh

crontab -e

* * * * * /home/pi/checkXenSsh.sh

Also see speak.sh when mount point is down.