[CentOS] server mirroring how to

[Gabriel Rosca]

Take a look at drbd and heatbeat for this.



Best regards,
Gabriel Rosca

www.genxvoip.com

2009/8/1 fabian <fabian at baladia.gov.kw>

> Dear All,
>
> I have the following setup which is the heart of our organistion and runs
> the following for a long time
>
> Centos 5.0 server which is used as a
>
> Primary Mailserver  running sendmail about 400 users
> mailScanner
> Primary DNS server using bind
> Webserver running apache
> squirrel mail  web server
>
> i also do have a another centos secondary DNS server and same machine used
> as my secondary mail server with no mail users
>
> Currently i have been following a little crude way of backup
> i shut down the Primary machine and I use clone Gozilla to make a
> duplicate of the original disk and keep it standby
>
> i do it weekly basis which is really a crude way
>
> i am jus googling arround for a solution in where i could have online
> mirroring of another machine
>
> i could have an identical hardware machine which could be running online
> so if the first machine fails the second one is avaliable instantly
>
> also if i create a new user or a new mail user ther user is replicated on
> both machine
>
> if i upgraded or install any software on one machine it is replicated on
> the other automaticalu..
> so we have total redundancy
>
> can it be done
>
> i was googling arround and actually found linux heartbeat but could not
> really get the hang of it.
> to my understanding heartbeat works on service which one would like to
> mirror but for me i would like disk mirroring on different servers
>
> any body has done the above
> apprecite your advice and help
>
>
>  regards
>
> fabian
>
>
>
>
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