#!/bin/bash

# LibreNMS backup script
# Jan 1, 2019

lDate=`date +%Y%m%d-%H%M`       # local date + hour minute
dDate=`date +%Y%m%d`            # todays date

# If you have the teams.sh script, you can trigger a backup notification
ALERT="/home/admin/teams.sh -b"

# Directory to backup to
bDir="/backup"
bName="librenms_backup"

# MySQL settings for tar and sqldump
sqlDir="/var/lib/mysql"
sqlDB="librenms"
sqlUN="root"
sqlPW=""
LOG="${bDir}/${lDate}-${bName}.log"

# Directory that contains data
dDir="/opt/librenms"

# tar LibreNMS dir
# tar SQL dir "the whole thing with the innode files
# sql dump of the db for extra redundancy

if [ -d ${bDir} ]; then
echo "backup dir exist, starting to backup"
else
        echo "backup dir not available.  Quiting"
        exit 1
fi

${ALERT} "Starting backup for ${bName} - `date`"

systemctl stop mariadb httpd
# LibreNMS data backup
tar -zcvf ${bDir}/${lDate}-${bName}.tgz ${dDir}
if [ $? -eq 0 ]; then
        echo "Tar succesfully backed up ${bDir}"
else
        echo "Tar failed while trying to backup ${dDir}"
        echo " ${lDate} - Tar failed while trying to backup ${dDir}" >> ${LOG}
        ${ALERT} "${lDate} - Tar failed while trying to backup ${dDir}"
fi

# MySQL data backup
tar -zcvf ${bDir}/${lDate}-${bName}-mysql.tgz ${sqlDir}
if [ $? -eq 0 ]; then
        echo "Tar succesfully backed up ${sqlDir}"
else
        echo "Tar failed while trying to backup ${sqlDir}"
        echo " ${lDate} - Tar failed while trying to backup ${sqlDir}" >> ${LOG}
        ${ALERT} "${lDate} - Tar failed while trying to backup ${sqlDir}"
fi

systemctl start mariadb httpd
sleep 5

 # SQL dump
mysqldump -u ${sqlUN} -p'4rfvBHU8!' ${sqlDB} > ${bDir}/${lDate}-${bName}.sql
if [ $? -eq 0 ]; then
        echo "MySQL DB dumped"
else
        echo "Ran into error while doing sql dump"
        echo "${lDate} - Ran into error while doing sql dump" >> ${LOG}
        ${ALERT} "${lDate} - Ran into error while doing sql dump"
fi

echo "Removing old backups"
if ( ls ${bDir} | grep -q ${dDate} );then
        find ${bDir}/* -prune -mtime +31 -exec rm {} \;
else
        echo "Looks like there are no backup files!  Aborting!!!"
        ${ALERT} "${lDate} - Error: find failed to find any backup files in backup dir.  Aborting!!!"
fi

${ALERT} "Finished backup for ${bName} - `date`"