[BNM] server fail-over solution help

[Sevan / Venture37]

> Hi guys
> 
> Pipex decided to shut down my server last night for some scheduled  
> admin which they only told me about at lunchtime yesterday. This  
> means that my server was down all night they are apparently going to  
> do the same tonight and for the rest of the week.
> 
> So I need a way to switch from my primary server to a back up server   
> both of these have different IP addresses I have thought of using the  
> DNS to have ns1 & ns2 point to my primary server and ns3 & ns4 point  
> to the secondary server but I don't have my own name servers and need  
> a solution that I can have set up in the next couple of hours which  
> counts out any DNS changes.
> 
> any ideas?
> 
> Gavin Wye

The only thing you can do is knock the TTL down for your DNS records so when something goes wrong you can change records & continue service from a different IP address.
If what you're looking for is leaving everything as is, but having service requests answered by you backup server when the master is down, you cant!
Simply because you'd need something listening at the primary servers end which would redirect you to the backup server & as the master server is being turned off, its not going to work.

I don't know if this will be a feasible solution, but your best bet is to use something like carp in the future to cluster the services you want to provide high availability for, you'll need atleast 2 machines with 2 or 3 network cards installed (depending on how you plan to set thing up). presuming you're using some flavour of *nix.


Sevan
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