Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hello, I currently have two two-node clusters running heartbeat and drbd(see background below). I also have a two-node test which I decided to update to the latest releases of all. In so doing I downloaded and installed drbd 8.3.0(drbd-8.3.0.tar.gz) which includes three-node setups using stacked clusters. Specifically havng a third backup/brp node geograghically removed from our production cluster is very appealing. I have looked at the online manual(http://www.drbd.org/users-guide/) and read the current information for three-node setups and have some observations/questions : - An illustraion/figure of a three-node setup would help. - From your "Creating a three-node setup" example on which machine does the stacked-on-top-of address run(ie 192.168.42.1) ? In my case my third node is not on the same ip segment as my two other nodes. - After doing some searching I hit on the http://drbd-plus.linbit.com page which mentions configuraion keywords "ignore-on" and "use-csums". Neither of these exist in the drbd.conf man page. Are they needed ? - The manual talks about the drbdupper resource used in R1 style clusters. What about CRM style clusters ? - In the R1 style configuraion you state : "The third node, which is set aside from the Heartbeat cluster, will have the â??other halfâ? of the stacked resource available permanently." I presume by this you mean that if the two-node cluster disappears that the mounting/application startup on the backup node is done manually ? Other Questions : - Is the manual available for download/printing ? - Has anyone used the nx_lsa(Linx Sockets Acceration) driver to run drbd ? Background : 1. Current two-node production clusters : - HW : - Proliant DL380G5 - Crossover for drbd : HP NC510C(NetXen) 10GB using nx_nic - SW : - RHEL5 and kernel-PAE-2.6.18-92.1.10.el5 - drbd : drbd-8.2.6-3, drbd-km-2.6.18_92.1.10.el5PAE-8.2.6-3, - heartbeat/pacemaker : heartbeat-2.99.0-3.1 heartbeat-common-2.99.0-3.1 heartbeat-resources-2.99.0-3.1 pacemaker-heartbeat-0.6.6-17.2 pacemaker-pygui-1.4-5.1 1. Test two-node cluster : - HW : - Proliant DL380G4 - SW : - Latest RHEL5 and kernel-2.6.18-128.1.1.el5 - drbd : drbd-8.3.0-3, drbd-km-2.6.18_128.1.1.el5-8.3.0-3 - heartbeat/pacemaker : heartbeat-2.99.2-6.1.i386.rpm heartbeat-common-2.99.2-6.1.i386.rpm heartbeat-resources-2.99.2-6.1.i386.rpm pacemaker-1.0.1-3.1.i386.rpm pacemaker-pygui-1.4-11.9.i386.rpm -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20090217/55602ad8/attachment.htm>