Scripting backup of file naming?

[Chuck Swiger]

Bart Silverstrim wrote:
[ ... ]
> *problem; on server1, I'm going to have two directories: ~/archive and 
> ~/workingdir.  I want the scp to move the files from server2 to 
> ~/workingdir, tar and zip them as a file name with a date attached (like 
> backup06072004.tgz) to make the filename distinctive, then move that 
> file from ~/workingdir to ~/archive.  The filename would need to be 
> distinctive both to allow for reference when needing to restore a 
> snapshot and also to keep the archives from overwriting each other when 
> moved over.

Consider the following script.  You may want to switch to using scp rather 
than rsync, and you may choose to hardcode the SSH key rather than passing it 
in as the first argument.  You might also want to change how $DESTROOT is set 
to match the paths you want to use.  Finally, you will want to add something like:

	cd ${DESTROOT}/..
	ARCHIVEFILE=/home/SOMEUSER/archive/backup`date "+%Y%m%d"`.tgz
	tar cf - ${CLIENT} | gzip --best > ${ARCHIVEFILE}

...just before the final done.  Test things out by hand for a while (or on a 
machine-by-machine basis), and then set this up in cron.

-- 
-Chuck

	-------

#! /bin/sh
####
#
# Backup script.  Takes SSH key as the first argument, then a list of
# one or more hostnames to backup.  This script removes slashes found
# in hostnames and tests whether a host is pingable before trying to
# operate on that host.
#
# In other words, if you configure one host at a time to backup okay
# by adjusting SSH keys and such, running "./backup.sh _ident_ *.com"
# at a later date will backup all of the hosts manually configured
# automaticly.  If a host is down, it will be skipped without its
# files being deleted by the "rsync --delete" or "rm" commands
# (if enabled; see below).
#
# Copyright (c) 2003.  Charles Swiger <chuck at pkix.net>
# $Id: backup.sh,v 1.3 2003/05/16 07:17:06 chuck Exp $
#
####

if [ $# -lt 2 ]; then
     echo "Usage: backup.sh <SSH key> <host1> [<host2>...]"
     exit 1
fi

ID=${1}
shift
echo "Authenticating via SSH key id: ${ID}"
echo

PATH=/usr/local/bin:/usr/bin:/usr/sbin:/usr/libexec:/usr/lib:/bin:/sbin
MKDIR="mkdir -p"
RM="/bin/rm -rf"
RSYNC_RSH="ssh -i ${ID}"
export RSYNC_RSH
COPY="rsync -aqRC --copy-unsafe-links --delete"
# Alternative COPY version if you don't have or want to use rsync:
# COPY="scp -rq -i ${ID}"

# Loop through all of the remaing arguments, and test whether reachable
for name ; do

     CLIENT=`echo "$name" | tr -d '/'`
     if { ! /sbin/ping -q -c 1 -t 10 ${CLIENT} > /dev/null ; } then
         echo "${CLIENT} is unpingable and may be down.  Consult errors above."
         continue
     fi

     echo "Backing up ${CLIENT} at `date`."
     # This is the destination to backup the client to.
     DESTROOT=/export/Backups/"${CLIENT}"/

     ####
     # DANGEROUS: (optionally) completely clean contents first?
     #
     # You will probably be sorry if you leave this enabled and run
     # backups via cron.  Only turn this on when running by hand.
     # ${RM} ${DESTROOT}
     ####

     ${MKDIR} ${DESTROOT}

     ${COPY} ${CLIENT}:/etc              ${DESTROOT} 2> /dev/null
     ${COPY} ${CLIENT}:/var/log          ${DESTROOT} 2> /dev/null
     ${COPY} ${CLIENT}:/var/named        ${DESTROOT} 2> /dev/null
     ${COPY} ${CLIENT}:/usr/local/etc    ${DESTROOT} 2> /dev/null
     ${COPY} ${CLIENT}:/opt/apache/conf  ${DESTROOT} 2> /dev/null
     # add directory locations you care about here...
done

echo
echo "Finished backup at `date`."