Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
OpenVZ sounds interesting. I will have a look at it, but I think Im going to keep it nice and simple by replicating only the data partitions. Thanks everyone for your advice. Regards, Faisal Werner Fischer wrote: >Hi Faisal, hi Martin, > >as Martin mentioned, using virtual servers is great way to mirror a >(virtual) server completely - so even user information like /etc/passwd >or /etc/shadow gets mirrored. > >For Vserver you find infos at: >http://oldwiki.linux-vserver.org/Vserver+DRBD >For OpenVZ I have written a howto that might help: >http://wiki.openvz.org/HA_cluster_with_DRBD_and_Heartbeat > >At work we implemented such a cluster (using Virtuozzo - the commercial >version of OpenVZ). There we have a chart that shows how it works: >http://www.thomas-krenn.com/upload/imagebox/schaubild_cluster.jpg >When using OpenVZ and building it yourself using the HowTO above, the >chart would be very similar (but the commercial Virtuozzo GUIs would be >missing as would the "Cluster Management" that we developed for this >product). > >hth, >Werner >Cluster Developer at www.thomas-krenn.com > >On Wed, 2006-09-06 at 10:52 -0700, Martin Fick wrote: > > >>If you really want to replicate your system, you could >>consider using vservers. >> >>What I do is: I have a drbd partition which contains >>an image of an entire vserver. The vserver can then >>be brought up on either node. This allows for my >>applications, vserver system configuration and data to >>be replicated to both nodes and failed over with >>heartbeat. I don't think that I would suggest sharing >>your host system files though. >> >>Unfortunately I have not been able to run a nfs server >>inside a vserver though. :( >> >> >>-Martin >> >>--- Faisal Shaikh <fss at webstar.co.uk> wrote: >> >> >> >>>Hi, >>> >>>Is it advisable to replicate the system partitions >>>as well as the data >>>partitions (/var, / and /usr)? >>> >>>Both of my machines which I intend to use in the >>>replication are i386 >>>based (Athlon processors) and dont have any special >>>hardware. They are >>>_not_ hardware clones of each other. >>> >>>The advantages I can think of are >>>1. System config changes are synced across as well, >>>so the secondary >>>node is upto date configuration wise. >>>2. Less administration as a result of the above. >>>3. No need to relocate and make symlinks of >>>directories like >>>/var/lib/nfs etc.. >>> >>>Disadvantages: >>>1. Accidental mangling of config files on primary >>>will be >>>instantaneously transferred to secondary. >>>2. Unknown demons that will present themselves when >>>I install new software. >>> >>>Thanks, >>>Faisal >>> >>>_______________________________________________ >>>drbd-user mailing list >>>drbd-user at lists.linbit.com >>>http://lists.linbit.com/mailman/listinfo/drbd-user >>> >>> >>> >>__________________________________________________ >>Do You Yahoo!? >>Tired of spam? Yahoo! Mail has the best spam protection around >>http://mail.yahoo.com >>_______________________________________________ >>drbd-user mailing list >>drbd-user at lists.linbit.com >>http://lists.linbit.com/mailman/listinfo/drbd-user >> >> > >_______________________________________________ >drbd-user mailing list >drbd-user at lists.linbit.com >http://lists.linbit.com/mailman/listinfo/drbd-user > > >