[BlueOnyx:09744] Re: BlueOnyx Cluster

Wed Mar 7 04:05:15 -05 2012

Why not using virualization (openVZ) with a blueonyx template

You then can use rsync to backup the complete blueonyx template with
everything in it

You then have a complete copy of the virtual server that you can start in
one minute.

That’s how I backup up all my servers.

Only I do it to a backup server and rsync it back to a server when needed

Steffan.

Van: blueonyx-bounces at mail.blueonyx.it
[mailto:blueonyx-bounces at mail.blueonyx.it] Namens Frank Soyer
Verzonden: dinsdag 6 maart 2012 16:36
Aan: BlueOnyx General Mailing List
Onderwerp: [BlueOnyx:09739] BlueOnyx Cluster

Hi all,
a customer ask me for "clustering" his BO server (virtual), without
heartbeat, just a mirror of virtualhosts on another virtual machine on which
we can switch manually in case of crash.
For the data I will use DRBD to mirror the /home partition, no particular
problem.
But while searching a solution for the rest of the server (configuration,
cce database) I find the following question from  Michael Tadros.
His script seems to be nice, but... What's this "cmuMerge" ? I haven't this
file on my BOs.

Any help ?
Thank you.

Frank

Le 25/08/2011 19:54, Michael Tadros a écrit : ([BlueOnyx:08255])

Hi There:

I am in the design stages of a web cluster (four servers) with one backend
server  to handle administrative tasks such as email & ftp and a second
server as a fall back email server.   There will be four separate DNS
servers running.  (10 servers total).

As such I envision web traffic (PORT 80) coming in to the Coyote Point E350
Load Balanced Switch and then going through a round robin request to one of
the four servers.

COYOTE---->SERVER1/2/3/4

I think I have devised a script using CMUexport to export the sites /
database from the backend webserver to the individual load balanced servers.
The script is as follows:

#!/bin/bash

#

# migrate_backup - backup web site data for deployment onto a running server

#

# Copyright (C) 2011 Mike Tadros

#

echo Clearing old site data...

rm -rf  /home/migrate/www.abc.org

#

echo Stopping sendmail service...

/etc/rc.d/init.d/sendmail stop

#

echo Backing Up Site Data...

/usr/sbin/cmuExport -d /home/migrate/www.abc.org

#

echo Restarting sendmail service...

/etc/rc.d/init.d/sendmail start

The tarball would then be placed in a shared directory that the four other
servers would be able to access.

After the tarball is then created, the user or cron job would run a modified
CMU script as follows on each individual server:

#!/bin/bash

#

# migrate_restore - deploy a migration onto a running server

#

# Copyright (C) 2011 Mike Tadros

# Change IP to server internal IP

export myip="192.168.1.2"

#

# First test to see if the migrate directory is mounted

# if not, do a mountall

#

if [ ! -d /mnt/migrate/www.abc.org ];

 then mount -a

fi

#

# Now, see if the migrate_backup flag is newer than the local svr restore
flag,

# or the local flag doesn't exist as of yet (1st run)

#

if ( [ ! -e /var/local/migrate_flag ] || [ /mnt/migrate/last_backup_flag -nt
/var/local/migrate_flag ] );

 then echo "Migrating in New Site Data" ;

      /usr/sbin/cmuMerge -d /mnt/migrate/www.abc.org -i $myip ;

      touch /var/local/migrate_flag ;

# else echo "Not Migrating Site Data - Up To Date" ;

fi

The Load Balanced Switch would have the public IP along with the main
backend server.  The backend server public IP that is shared ith load
balanced switch would then be commented out from /etc/initd/eth0:1 so that
when the web traffic comes in from the router.

Question of the day,  does someone on the list know of a more efficient way
of doing this?   Thanks for your help  - Mike

Sincerely yours;

Mike Tadros

Antenna Systems & Solutions, Inc.

931 Albion Avenue

Schaumburg, Illinois 60193-4550

United States of America

Phone: +1-847-584-1000   Fax: +1-847-584-9951

www.antennasystems.com <http://www.antennasystems.com/
<http://www.antennasystems.com/%3E> >

email: mike at antennasystems.com

GSA Contract Numbers: GS-35F-0479T Electronic Counter Measures, Trap and
Trace Devices, and accessories.

                            GS-07F-0412X Communication Towers and related
construction accessories.

Watch our network broadcast television interviews on
www.youtube.com/antennasystems <http://www.youtube.com/antennasystems>

Confidentiality note:  

This message is the property of Antenna Systems & Solutions, Inc. and
contains information which may be privileged or confidential.  It is meant
only for the intended recipients and/or their authorized agents.  If you
believe you have received this message in error, please notify us
immediately by return e-mail and destroy any printed or electronic copies of
this message.  Any unauthorized use, dissemination, disclosure, or copying
of this message or the information contained in it, is strictly prohibited
and may be unlawful.   Thank you for your cooperation.

_______________________________________________
Blueonyx mailing list
Blueonyx at mail.blueonyx.it
http://mail.blueonyx.it/mailman/listinfo/blueonyx
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.blueonyx.it/pipermail/blueonyx/attachments/20120307/106dd012/attachment.html>