Auto restart zimbra if something stops working, because some zimbra services likes to stop working randomly. Prevent consecutive restart if last restart didn't fix the problem. Also send a Pushbullet notification on restart. Best to pair this script with crontab!

zimbra_auto_restart.sh

#!/bin/bash

check=$(su - zimbra -c 'zmcontrol status' | grep Stopped)
fixes_dir="/root"
# run as root only! make sure chmod 500 to keep secret!
access_token="PUSHBULLET_API_TOKEN"

pushbullet () {
    msg="$(date -R)\n${2}"
    title="${1}"
    curl --ssl-reqd -s -o /dev/null --header "Access-Token: ${access_token}" --header 'Content-Type: application/json' --data-binary "{\"body\":\"${msg}\",\"title\":\"${title}\",\"type\":\"note\"}" --request POST https://api.pushbullet.com/v2/pushes
}

if [ "x$check" != "x" ]; then
    echo "[INFO] $(date -R) - ${check}" >> $fixes_dir/restarts.log
    # check if restarted already
    if [ ! -f $fixes_dir/.restarted ]; then
        su - zimbra -c "zmcontrol restart";
        echo "[INFO] $(date -R) - Restarted" >> $fixes_dir/restarts.log;
        touch $fixes_dir/.restarted;
        pushbullet "Zimbra Server" "Zimbra was restarted";
    else
        echo "[ERROR] $(date -R) - Consecutive restart detected! Previous restart did not solve problem" >> $fixes_dir/restarts.log;
        pushbullet "Zimbra Server" "Zimbra restart failed to solve problem!"
    fi;
else
    # all Running
    rm -f $fixes_dir/.restarted;
fi