[K12OSN] rsync with multiple dhcpd servers -- scripting questions

[Stephen Crampton]

The answer:

I fixed the bug by . . .






















. . . removing " --delete" from line 4 of the script.

Now I have the problem that, if a file has been synced, you cannot delete
it.  It reappears at the next sync.

What I want to happen is to go through each user in /home and see which
version is most recent (the one on server1 or the one on server2).  Then I
want to only rsync from most recent to older, with the "--delete" option to
remove files that were deleted recently.

I can imagine having a script (running on server2) that does a local "ls -l
/home" and a "ssh server2.ltsp ls -l /home" and compares the modification
times and then does the rsync in the appropriate direction for each user's
directory.

Can anyone think of a more elegant solution?



On Sun, Oct 12, 2008 at 2:03 PM, Stephen Crampton <SteveSings at gmail.com>wrote:

> At bottom is a script I wrote to sync the files between two K12LTSP
> servers.  server1 is 192.168.0.254 and server2 is 192.168.0.253.
>
> I put the script in /etc/cron.hourly.  It seems to work, except the log
> files are not created unless I run the script manually (as root).
>
> I would appreciate any comments/corrections.  Thanks!
>
>
>
> ---------------------------------------------------------------------------------------------------------------------
>
>
> #!/bin/bash
> LOGFILE="/var/log/rsync.log"
> ERRFILE="/var/log/rsync.errors"
> RSYNCCMD="rsync -ahtuvz -e ssh --delete"
> RSYNC="nice "$RSYNCCMD
> DATE=`date`
> ps aux | grep -e "$RSYNCCMD" | grep -v grep &&
>   echo "We appear to be already running." &&
>   sleep 2 &&
>   exit -1
> echo "" >>$LOGFILE
> echo "***********************************************************"
> >>$LOGFILE
> echo "rsync $DATE" >>$LOGFILE
> echo "vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv"
> >>$LOGFILE
> echo "" >>$LOGFILE
> echo "" >>$ERRFILE
> echo "***********************************************************"
> >>$ERRFILE
> echo "rsync $DATE" >>$ERRFILE
> echo "vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv"
> >>$ERRFILE
> echo "" >>$ERRFILE
> #
> $RSYNC server1.ltsp::home /home 1>>$LOGFILE 2>>$ERRFILE
> #
> $RSYNC /home/ server1.ltsp::home 1>>$LOGFILE 2>>$ERRFILE
> #
> $RSYNC server1.ltsp::html /var/www/html 1>>$LOGFILE 2>>$ERRFILE
> #
> $RSYNC /var/www/html/ server1.ltsp::html 1>>$LOGFILE 2>>$ERRFILE
> #
> $RSYNC server1.ltsp::'etc/passwd etc/shadow etc/group etc/gshadow
> etc/default/useradd etc/skel etc/login.defs etc/desktop-profiles' /etc
> 1>>$LOGFILE 2>>$ERRFILE
> #
> $RSYNC /etc/passwd /etc/shadow /etc/group /etc/gshadow /etc/default/useradd
> /etc/skel /etc/login.defs /etc/desktop-profiles server1.ltsp::etc
> 1>>$LOGFILE 2>>$ERRFILE
> echo "" >>$LOGFILE
> echo "^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^"
> >>$LOGFILE
> echo "rsync $DATE" >>$LOGFILE
> echo "***********************************************************"
> >>$LOGFILE
> echo "" >>$ERRFILE
> echo "^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^"
> >>$ERRFILE
> echo "rsync $DATE" >>$ERRFILE
> echo "***********************************************************"
> >>$ERRFILE
> LOCKS='/tmp/gconfd-* /tmp/mapping-* /tmp/orbit-*'
> rm -rf $LOCKS
> ssh server1.ltsp rm -rf $LOCKS
> exit 0
>
>
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