Date: Wed, 23 Jan 2002 14:45:46 +0100 (CET) From: =?iso-8859-1?q?Fabrizio=20Ravazzini?= <freefabri@yahoo.it> To: Axel Scheepers <axel@axel.truedestiny.net> Cc: freebsd-isp@freebsd.org Subject: Re: alternatives to rsync for mail cluster Message-ID: <20020123134546.1183.qmail@web20109.mail.yahoo.com> In-Reply-To: <20020123134808.B60686@mars.thuis>
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Thanks, I also thought of nfs on another machine but as you said if this one "goes down" we'll be in a big problem. We can put two machines as nfs server, yes this is good but for us too expensive. regards --- Axel Scheepers <axel@axel.truedestiny.net> ha scritto: > On Mon, Jan 21, 2002 at 02:35:06PM +0100, Fabrizio > Ravazzini wrote: > > Hello all, I've made a qmail server, I need to put > > another machine to mirror it in order to have a > high > > availability cluster. > > I thought of vrrpd or clusterd to have the virtual > ip, > > then rsync to the other machine for syncronize the > > mails. > > Is there a way to make the rsync procedure > automatic? > > Have I to rsync to say i.e. every 1 minute? or 30 > > seconds? or is there an alternative to rsync? > > Any suggestions appreciated. > > Bye > > > > Hi, > > How about sharing your mail data via nfs ? You could > set up an external data > host which shares all kind of user data which then > gets mounted by the > appropiate server. This way you can later add as > many nodes as you like, > performing simple round-robin dns techniques, and > with some small extra work > you can start clustering your web servers too. Note > that this setup isn't > fail-safe; as soon as your file server is offline, > all the other servers > can't request their data nomore. For that rsync is a > nice solution so you > can mirror the fileserver or, if just want the mail > to be clustered, your > mail server. I never did this before but I can > imagine this kind of stresses > your network and so, you should add a second NIC to > route the traffic for > rsync (I suppose clusterd handles this? Never looked > into it, but I will > ;-) I don't know how rsync performs whenever it is > ran every 30 seconds, > which I think puts up the system load instead of > lowering it. I do remember > some other mirror tools, but as I said, I never > really used this kind of > setup. To me it seems that the best solution for > rapidly changing data files > is mfs, maybe with rsync to mirror the file server > which exports the > filesystems. > Any comments are welcome. ;-) > > Gr, > > -- > Axel Scheepers > UNIX System Administrator > > email: axel@axel.truedestiny.net > ascheepers@vianetworks.nl > http://axel.truedestiny.net/~axel > ------------------------------------------ > What is worth doing is worth the trouble of asking > somebody to do. > ------------------------------------------ ______________________________________________________________________ Dillo con una cartolina! http://it.greetings.yahoo.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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