Re: [SSI-users] Can I add an existing RH9 as my second node?
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From: Ramachandran R. <ram...@ya...> - 2004-05-27 01:33:58
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Brian, Thanks for the help. I tried two different tests on it with a live application running. The cluster seamlessly switched processes from one to the other and the application continued to run without loosing its state and session. It was a LAMP application. I would like to do a similar test on an MySQL, Apache and Tomcat application. I am planning to add another 6 mode to the cluster in due course. Is it possible to get any documentation on openssi architecture other than the one available at http://www.openssi.org/docs/Introduction-to-SSI.shtml? Thanks for your help again Regards Ramaseshan Ramachandran Ramaseshan wrote: > Thanks for the help. > > I finally got the cluster working. While trying to > network-boot the second node, it was failing looking > for 8139too. > > Later I un-RPMed kernel-ssi*.rpm on the first node and > included "alias 8139too" in the /etc/modules.conf of > the first node and reinstalled kernel-ssi*.rpm. > Then I tried adding the second node into the cluster > and bang, it worked. > > "How will know about this (whether it is 8139cp or > 8139too or something else) before adding a node?" The best answer I can give you right now is to know your hardware. There might be websites that can tell you the appropriate Linux driver to use for a particular network card. Failing that, you could boot base Linux on the machine and try loading and unloading network drivers until you see the card appear in the output of `ifconfig -a'. > Or do I have to follow what I did to add the second > node everytime? You only need to add an extra line to /etc/modules.conf whenever you add a node that uses a different type of network card to attach to the cluster interconnect. After you do this, you need to rebuild the ramdisk, which is what you effectively did by uninstalling and reinstalling the kernel-ssi* package. If you want to rebuild the ramdisk directly, without reinstalling the kernel, run `mkinitrd -f --cfs /boot/initrd-<SSI kernel version>.img <SSI kernel version>'. > Or can I add all the known modules before installing > the kernel-ssi? > In that case, is there a list of modules that I can > add? Assuming there's enough space in the ramdisk, you can add any network driver that you think might be applicable. Having more network drivers than necessary won't do anything bad, except increase the kernel's memory footprint. Hope this helps, Brian __________________________________ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger. http://messenger.yahoo.com/ |