[BlueOnyx:08257] Re: Blue Onyx Web Load Balanced Cluster with Coyote E350

[Charles Bowman]

Yes.
Load balancing router.
Virtualized environment across SAN disks.
It's instant and works Like a charm.

You can also use it across datacenters.
On 25 Aug 2011 19:02, "Michael Tadros" <badtad at mac.com> wrote:
> 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.
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.blueonyx.it/pipermail/blueonyx/attachments/20110825/f5f0a370/attachment.html>