Hi Michael, I wonder - what test scenario did you run on Linux-HA? I tried to used it for floating IPs and cluster resources, it gives the illusion that it works ok but when you start testing it a bit more you see catastrophes. I even submitted a few bugs to their team and one response that I got is "oh well, never tested this". That for instance is for switch power down.
>From my experience, the CRM (if I remember correcly) algorithm is very buggy - it's "fun" to see the linux-ha segfaults all of the sudden with no apparent reason... Furthermore, what version did you work with? About LVS - it's primarly for load-balancing, using a director server and "real servers", I used linux-ha for backup servers (n+1 configuration). Itay On Wed, Jun 24, 2009 at 7:10 AM, Michael Tewner<tew...@gmail.com> wrote: > Hi all - > > If all you want to do is float an IP, Linux-HA will work, but a simpler > solution could be, say, keepalived and vrrpd. > > I you would like to also manage cluster resources, Linux-HA is your best > solution. I would agree that it has a steep learning curve, and it's a pain, > but it does exactly what you want, and more. It will handle all of your > cluster resources - We've used it for MySQL, DRBD, OCFS2, Asterisk, and > others. > > Other options include virtualMonkey and/or Linux Virtual Server > > ...But I would NOT agree with Itay's "I would recommend not using Linux-HA > for any means." Linux-HA is the PROPER open solution to clustering, and just > 'cause it's hard to figure out doesn't mean that you should choose a less > appropriate product. > > Check: > http://www.ntua.gr/lvsp/Joseph.Mack/HOWTO/LVS-HOWTO.failover.html > > -Mike > > > On Tue, Jun 23, 2009 at 5:04 PM, Maxim Veksler <hq4e...@gmail.com> wrote: >> >> On Tue, Jun 23, 2009 at 9:01 AM, Itay Donenhirsch <i...@bazoo.org> wrote: >> > >> > Hi Folks, >> > >> > I would recommend not using Linux-HA for any means. I had very bitter >> > experience with it. It is implemented in a very complicated and hard >> > to debug and configure. It's also very poorly tested. I first didn't >> > believe it myself and thought I was doing something wrong, but after >> > some email exchanges with its developer it became apparent that it >> > fails some very basic scenarios (like switch power-down for instance). >> > Moreover, the linux-ha people themselves will confuse you with which >> > version to use (2.99/2.1.4, heartbeat or pacemaker, etc). >> > >> > If you'd like more detailed explanation, or had different experience, >> > you are more than welcome to email me. >> > >> >> Heartbeat has 2 faces, It can work great or it can fail bitterly. >> It has a very steep learning curse before something useful begins to >> happen. >> >> cibadmin -Q, crm_attribute are your friends. >> >> I agree with Itay, from our experience it is indeed buggy but working. >> >> >> Maxim. >> >> > Itay >> > >> > On Tue, Jun 16, 2009 at 9:55 PM, Oleg Goldshmidt<p...@goldshmidt.org> >> > wrote: >> > > Marc Volovic <marcvolo...@me.com> writes: >> > > >> > >> Hi >> > >> >> > >> First, the problem is not an IP, but the mac-ip mapping and ARP >> > >> caching strategies. >> > >> >> > >> Second, don't use ping. >> > >> >> > >> Third, do use project 'heartbeat' and 'fake'. They provide what you >> > >> need. >> > > >> > > Heartbeat is a component of Linux-HA, which is why I pointed to the >> > > latter ;-) >> > > >> > > http://www.linux-ha.org/Heartbeat >> > > >> > > -- >> > > Oleg Goldshmidt | p...@goldshmidt.org >> > > >> > > _______________________________________________ >> > > Linux-il mailing list >> > > Linux-il@cs.huji.ac.il >> > > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il >> > > >> > >> > _______________________________________________ >> > Linux-il mailing list >> > Linux-il@cs.huji.ac.il >> > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il >> >> >> >> -- >> Cheers, >> Maxim Veksler >> >> "Free as in Freedom" - Do u GNU ? >> >> _______________________________________________ >> Linux-il mailing list >> Linux-il@cs.huji.ac.il >> http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il > > _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
