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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: pop server in an ISP environment
-----BEGIN PGP SIGNED MESSAGE----- Hash: RIPEMD160 >>>>> "John" == John Butler <[email protected]> writes: John> Thus spake Muljawan Hendrianto John> ([email protected]): >> Another issue is high availability, does any body use server >> clustering in an ISP environment? I am thinking about having a >> Sun Cluster for these pop servers, but will I need a special HA >> agent ? John> Stick a bunch of them behind a server load balancer like a John> Foundry ServerIron or an F5. Then you don't have to worry John> about who the server vendor is. Then you can use FreeBSD John> boxen for the servers and save a chonka dough. A solution that is cheaper yet is to have the servers speak a routing protocol and announce their presence into it that way (see the recent "IGPs and services?" thread on this list). You can do it all with free software and commodity hardware. The big issue here is the back end -- if users may connect to, say, one of four pop3 servers to read their mail, the /var/mail filesystem had better be shared in some way. The easy way to do this is with NFS, but if each of the pop3 servers has a 100Mb ethernet card in it it could easily swamp an NFS server. Perhaps some way to have multiple mail spool filesystems -- foo and bar's mail spools are /var/mail/f/foo and /var/mail/b/bar where /var/mail/(f|b) are separate filesystems mounted from different NFS servers. Cheers, - -w - -- Will Waites \________ [email protected]\____________________________ Idiosyntactix Ministry of Research and Development\ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.1 (OpenBSD) Comment: Processed by Mailcrypt 3.5.5 and Gnu Privacy Guard <http://www.gnupg.org/> iQEXAwUBOS60xw4cK24IcAwYFAO0cwP/Upmh1qyDhjFRQzxCl8sCYlMbJt0xUT4q 7eNQ/D8iYZ/nEwIWzuHF2ru6GUtiKAFRsZ0sEjBobJTjAX1QCzdooA39K/6WXFps lt00St8aMoakjTPvwDbojLRN8x8L9NslYw/tmGQLZbF3B0RuH8UNMY7Es3ls14Ly clPiXgZFVp8D/1JMsQgFu16wKBmMSxD4JjXdY1lYsRx3E52WcoI8rcjvX9053XCC DFy/VSDYhtc+3SV8e+IX5UZf65fotDGEwLXrCUsLXHw7pRL75L5LYxa3uTxmzMWO nZpieAdG2uZt/ZNYOusTdVO4q6b3wGnbahqtB2D4aoRQljcuBfasgHc0 =5zKZ -----END PGP SIGNATURE-----
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