You can choose to not use pygrub... Or you can choose to create a primary/primary situation (my choise, least complexity).. or you can choose to setup a cluster-filsystem..
What you choose is up to you.. They all have their specific drawbacks, and some of them highly complicate everything. It's a pitty pygrub doesn't support block-drbd.. I hope this will change soon! Cheers, Bart ----- Oorspronkelijk bericht ----- Van: "Paras pradhan" <[EMAIL PROTECTED]> Aan: "General Linux-HA mailing list" <[email protected]> Verzonden: Vrijdag 26 september 2008 21:55:29 GMT +01:00 Amsterdam / Berlijn / Bern / Rome / Stockholm / Wenen Onderwerp: Re: [Linux-HA] Re: [DRBD-user] sample file haresources This is what I really wanted to know. What does centos users do to create xen cluster using drbd for high availability? Block-drbd doesn't work with RH/centos means .. its impossible or needs lot of work? I would really appreciate if some one points me what centos/rh users are doing to make xen and drbd work to create a high availability cluster. Didn't find much resources while googling too. Thanks Paras. On Fri, Sep 26, 2008 at 2:28 PM, Bart Baars <[EMAIL PROTECTED]> wrote: > It is included in Centos... > > however since you mentioned centos... you use pygrub to boot you > domainU's... and block-drbd does not work with RH/centos.. > > Cheers, > > Bart > ----- Original Message ----- > From: "Paras pradhan" <[EMAIL PROTECTED]> > To: "General Linux-HA mailing list" <[email protected]> > Sent: Thursday, September 25, 2008 10:35:06 PM GMT +01:00 Amsterdam / > Berlin / Bern / Rome / Stockholm / Vienna > Subject: Re: [Linux-HA] Re: [DRBD-user] sample file haresources > > On Thu, Sep 25, 2008 at 3:17 PM, Bart Baars <[EMAIL PROTECTED]> > wrote: > > > GFS or ocfs will do.. However a long as you can guarantee only on system > is > > writing to the shared filesystem, you don't absolutely need an cluster > > filesystem (which add a lot of complexity)... > > > > And if you are not using pygrub, try block-drbd. That script will take > care > > of Xen and drbd for you > > > > Cheers, > > > > Bart > > > > ----- Original Message ----- > > From: "Paras pradhan" <[EMAIL PROTECTED]> > > To: [email protected] > > Sent: Thursday, September 25, 2008 7:26:28 PM GMT +01:00 Amsterdam / > Berlin > > / Bern / Rome / Stockholm / Vienna > > Subject: [Linux-HA] Re: [DRBD-user] sample file haresources > > > > On Thu, Sep 25, 2008 at 10:35 AM, Jürgen Scholz < > [EMAIL PROTECTED] > > >wrote: > > > > > I am attaching my haresources and ha.cf files . Please suggest me what > > >> went wrong. > > >> > > >> > > >> Right now I am working on a very basic drbd setup to host xen guests > for > > >> high availability. After my setup is working, then I will move to XML > > style > > >> as approached by other list members. > > >> > > > Why are you supplying an IP address after the hostname ... and it's the > > > same address for both hosts? > > > Since it doesn't seem as if you want to create a primary/primary setup > > you > > > can't use the drbd resource on both nodes at the same time. If you're > > trying > > > to do active/active you chose the wrong filesystem. > > > > > > Look at my haresources. It's a active/passive failover configuration > > > working for two years now. Notice that the passive host does not have > an > > own > > > entry! > > > > > > # haresources > > > zitrone-a ipcheck::10.0.0.110::10.0.0.111 \ > > > IPaddr::10.0.0.3/16/eth0 \ > > > Delay::2 \ > > > drbddisk::home \ > > > drbddisk::daten \ > > > Delay::1 \ > > > Filesystem::/dev/drbd0::/mnt/drbd/home::xfs::noatime,nodiratime > \ > > > Filesystem::/dev/drbd1::/mnt/drbd/daten::xfs::noatime,nodiratime > \ > > > Delay::1 \ > > > killnfsd \ > > > nfs-true \ > > > samba > > > > > > You probably want to read up on the linux-ha documentation before > > > progressing any further. It seems that you missed how to configure this > > > thing and how it works. This will give you trouble when you'll have to > > > finetune this thing or fix any glitches. > > > > > > hth, > > > juergen > > > > > > > > > I think since I am working on xen domains migration, I need active/active > > setup. Xen guests require the resource to be primary where its running. > So > > if node1 fails, then node2 will host guest converting its role to primary > > from secondary. > > > > for active/active which filesystem i need to work? > > > > Thanks > > Paras. > > _______________________________________________ > > Linux-HA mailing list > > [email protected] > > http://lists.linux-ha.org/mailman/listinfo/linux-ha > > See also: http://linux-ha.org/ReportingProblems > > _______________________________________________ > > Linux-HA mailing list > > [email protected] > > http://lists.linux-ha.org/mailman/listinfo/linux-ha > > See also: http://linux-ha.org/ReportingProblems > > > > > > is block-drbd is dependent on xen version. does it reqire xen 3.3? .. > > centos repo only has 3.0.3 > > > Thanks > Paras. > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems > _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
