2009/8/13 Hakan VELIOGLU <[email protected]> > Thanks for all the answers. > > I think there is realy no backup heartbeat channel. Maybe the reason is > GFS. DLM works on the heartbeat channel. If you lost your heartbeat you lose > your lock consistency so it is better to fence the other node. For this > reason I think if you don't have enough network interface on server and > switch, loosing the heartbeat network may shut all the cluster members. > There is no backup heartbeat channel because you should do the backup at a operating system level, i.e: bonding That's why you should use a bonded interface for the heartbeat channel with at least 2 ethernet slaves; going further (for better redundancy) each of the slaves should be on a different network card and you should connect the each slave to a different switch. But what I am trying to explain, is that you can use that bonded logical interface also for things different from hearbeat. ;)
Greetings, Juanra > Hakan VELİOĞLU > > > ----- [email protected] den ileti --------- > Tarih: Thu, 13 Aug 2009 10:42:11 +0200 > Kimden: Juan Ramon Martin Blanco <[email protected]> > > Yanıt Adresi:linux clustering <[email protected]> > Konu: Re: [Linux-cluster] Is there any backup heartbeat channel > Kime: linux clustering <[email protected]> > > > 2009/8/13 Hakan VELIOGLU <[email protected]> >> >> ----- [email protected] den ileti --------- >>> Tarih: Thu, 13 Aug 2009 08:57:15 +0530 >>> Kimden: Rajagopal Swaminathan <[email protected]> >>> Yanıt Adresi:linux clustering <[email protected]> >>> Konu: Re: [Linux-cluster] Is there any backup heartbeat channel >>> Kime: linux clustering <[email protected]> >>> >>> >>> Greetings, >>> >>>> >>>> 2009/8/12 Hakan VELIOGLU <[email protected]>: >>>> >>>> Hi list, >>>>> >>>>> I am trying a two node cluster with RH 5.3 on Sun X4150 hardware. I use >>>>> a >>>>> >>>>> >>>> IIRC, Sun x4150 has four ethernet ports. Two can be used for outside >>>> networking and two can be bonded and used for heartbeat. >>>> >>>> I think, I couldn't explain my networking. I use two ethernet ports for >>> xen >>> vm which are trunk and bonded ports. Then there left two. Our network >>> topology (which is out of my control) available for one port for server >>> control (SSH). >>> >> >> So you can't use a bonded port for both server management and cluster >> communications, can you? You can configure an active-passive bonding and >> then you can have many virtual interfaces on top of that, i.e: bond0:0, >> bond0:1 and assign them the ip addesses you need. >> >> >> I use the other one with a cross over cable for heartbeat. So there is no >> >>> way for bonding these two interfaces. Of course if I buy an extra switch >>> I >>> may do this. >>> >> >> You can connect them to the same switch (though you lost kind of >> redundancy), or you can use two crossover cables and move the management >> IP >> to the same ports you are using for the vm's. >> >> Greetings, >> Juanra >> >> >>> I don't realy understand why there is no backup heartbeat channel. LVS >>> and >>> MS cluster has this ability. >>> >>> >>>> ALOM can be used for fencing and can be on a seperate subnet if >>>> required. >>>> >>>> I used this for fencing_ipmilan. >>> >>> >>>> Regards >>>> >>>> Rajagopal >>>> >>>> -- >>>> Linux-cluster mailing list >>>> [email protected] >>>> https://www.redhat.com/mailman/listinfo/linux-cluster >>>> >>>> >>>> >>> ----- [email protected] den iletiyi bitir ----- >>> >>> >>> >>> >>> -- >>> Linux-cluster mailing list >>> [email protected] >>> https://www.redhat.com/mailman/listinfo/linux-cluster >>> >>> >> > > ----- [email protected] den iletiyi bitir ----- > > > > > -- > Linux-cluster mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/linux-cluster >
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