[CentOS] OT: CentOS server with 2 GbE links to 2 GbE switches

Patrick centos at puzzled.xs4all.nl
Fri Aug 26 17:27:32 UTC 2005


On Fri, 2005-08-26 at 11:02 -0500, rado wrote:
> Hi Patrick,
> 
> I run a HA(High Availability) technique that I developed myself whereas
> 2 servers are redundant syncing up bout every 15-20 seconds. Basically
> mine is IP oriented instead of machine oriented...either machine can be
> the master and will stay the master until the slave deems the master as
> having problems and not being able to handle the server
> responsibilities. When the slave decides this, it then grabs the roaming
> IP and turns on the servers and it is then the master.
> 
> If a redundant HA server is machine oriented, that means that, yes, the
> slave will take over but as soon as the master comes back on line, the
> master takes back the roaming ip and starts up the servers and the slave
> machine will assume slave responsibilities again.
> 
> these are just some ideas of what you are looking for. Also, google
> around using High Availability as a keyword...a bunch out there I think,
> I am just about to the point to start building up my web-site where I
> will cover my system in depth.
> 
> Incidently, over the last month or so, the main server seems to loose it
> and decides to reboot in which case, the slave takes over...I have never
> been around when it actually happened and sometimes I never even
> realized it for a day or so. It's kinda seamless and the switch takes
> bout 20 seconds. My point, I do know it works as it should!

Hi John,

Thanks for your suggestion. The 20 seconds is a bit long for the telco
service being out of order but I will further investigate the HA stuff
over at linux-ha.org to see if it can be tweaked.

Regards,
Patrick



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