failsafe server

[rldev]

Does anyone have a good implementation for a failsafe server or standby server.

I want to be able to swap info to a different server in case of hardware failure.

Thanks.

I'm just wondering what some people do in this respect. I would love to run load balancing but keeping dynamic and database information does not seem easy.

 

[fusionictnl]

Well first of all the server(s) has to be synchronized constantly. Or 1 onces a night (not that great of load-balance). You have some tools for this on the net and lot's of resources how to set this up. Lot's off software that will directly upload changes to other server.

You could make a complete backup of the server, to one it's external NIC is off. When the main server fails the backup server will fire it's nic UP so it takes the request. Or setup a load balancing server with a cluster of servers behind it

 

[jmstacey]

It might get easier soon. I don't know if anyone here has tried it, but the biggest problem is dynamic content (mysql) since all the other files are static its just a matter of setting the server up to recognize when a file has been changed and to update it on your backup. Now that there is a MySQL cluster tool it might be easier to do this. I haven't tried it and don't know how exactly it works but it might be worth a look.

 

[nobaloney]

I appreciate everyone's optimism. Because of the way DNS works and doesn't work, and because certain large ISPs ignore TTL and cache DNS for as long as they wan't, it's very hard to keep a service up if one of the servers it runs on is down.

If it were easy to do the biggest players wouldn't have occasional downtime.

But they do.

Jeff