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26 August 2016

Backing up your F5 load balancers.

by deaves

The following script is for performing scheduled backups of F5 load balancers. The Script initiates a backup against the F5 via SSH and then SCP’s the UCS output file off the box. It is meant to be ran in the crontab, on a Linux box, against the F5’s in an environment.

For further reading please reference the following F5 Support Documentation:

Feel free to review, modify or use this script however you see fit. Remember you do so at your own risk!

## Create/Backup a UCS file against a list of F5 loadbalancers.
## 2016 (v1.0) - Script from www.davideaves.com

F5HOSTS="bigip01 bigip02"

# FUNCTION: End Script if error.
DIE() {
 echo "ERROR: Validate \"$_\" is installed and working on your system."
 exit 0

# FUNCTION: Fetch the UCS or private id_rsa keyfile.
 if [ -e "$BACKUPDIR/.$F5.identity" ]
        printf "$F5 "

        # Delete backup files older than 90 days.
        find "$BACKUPDIR" -maxdepth 1 -type f -name "$F5*.ucs" -mtime +90 -exec rm {} \;

        # Create the UCS backup file.
        ssh -q -o StrictHostKeyChecking=no -i "$BACKUPDIR/.$F5.identity" root@$F5 "tmsh save /sys ucs $(echo $F5) > /dev/null 2>&1"

        # Copy down the UCS backup file.
        scp -q -o StrictHostKeyChecking=no -i "$BACKUPDIR/.$F5.identity" root@$F5:/var/local/ucs/$F5.ucs "$BACKUPDIR/" && UCSRENAME
        printf "\n$F5 "

        # Copy down the F5's private id_rsa keyfile for root user.
        scp -o StrictHostKeyChecking=no root@$F5:/var/ssh/root/identity "$BACKUPDIR/.$F5.identity" 2> /dev/null

# FUNCTION: Rename the UCS file.
 mv "$BACKUPDIR/$F5.ucs" "$BACKUPDIR/$F5$(echo $F5 | cksum | awk '{print "_"$1}') ($(date +%F -d "$(file "$BACKUPDIR/$F5.ucs" | awk -F': ' '{print $NF}' | awk -F',' '{print $1}')")).ucs"

# Validate script requirements are meet.
type -p scp > /dev/null || DIE

### Main Loop ###
for F5 in $(echo $F5HOSTS | tr [:lower:] [:upper:]); do

 # Validate host is pingable before fetching UCS file.
 ping -c1 $F5 > /dev/null 2>&1 && UCSFETCH

done; echo
tags: backup - f5 - linux - ltm - script - ucs