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Operating Systems Linux Red Hat HA Cluster solution for Linux - which one to use? Post 302444096 by pshaikh on Wednesday 11th of August 2010 01:03:27 AM
Old 08-11-2010
Bug HA Cluster solution for Linux - which one to use?

Hi all experts,

I need your kind suggestions or feedback on choice of clustering software for red hat linux nodes running certain applications which I need to make highly available.

Minimum requirement is 2 nodes; all nodes shall be active-active running distinct applications e.g. node 1 runs application ABC and node 2 runs application PQR, node 1 is back up node for PQR and node 2 for ABC. Node 1 and node 2 do not have any shared storage required, they access back end database which is protected by Oracle's dataguard.

I need to have cost-effective HA with minimum downtime. There are various HA solutions available in market - SteelEye, Veritas Cluster, Red Hat cluster suite, IBM HACMP etc. and I have almost narrowed down to Red Hat Cluster(for it being cheaper) vs Veritas (for it being feature rich).

Any experiences with clustering? Any pros and cons of these two cluster software (with references would be appreciated) would be of great help?

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Linux::Distribution(3pm)				User Contributed Perl Documentation				  Linux::Distribution(3pm)

NAME
Linux::Distribution - Perl extension to detect on which Linux distribution we are running. SYNOPSIS
use Linux::Distribution qw(distribution_name distribution_version); if(my $distro = distribution_name) { my $version = distribution_version(); print "you are running $distro, version $version "; } else { print "distribution unknown "; } Or else do it OO: use Linux::Distribution qw(distribution_name distribution_version); my $linux = Linux::Distribution->new; if(my $distro = $linux->distribution_name()) { my $version = $linux->distribution_version(); print "you are running $distro, version $version "; } else { print "distribution unknown "; } DESCRIPTION
This is a simple module that tries to guess on what linux distribution we are running by looking for release's files in /etc. It now looks for 'lsb-release' first as that should be the most correct and adds ubuntu support. Secondly, it will look for the distro specific files. It currently recognizes slackware, debian, suse, fedora, redhat, turbolinux, yellowdog, knoppix, mandrake, conectiva, immunix, tinysofa, va-linux, trustix, adamantix, yoper, arch-linux, libranet, gentoo, ubuntu, scientific, oracle enterprise linux and redflag. It has function to get the version for debian, suse, fedora, redhat, gentoo, slackware, scientific, oracle enterprise linux, redflag and ubuntu(lsb). People running unsupported distro's are greatly encouraged to submit patches :-) EXPORT None by default. TODO
Add the capability of recognize the version of the distribution for all recognized distributions. AUTHORS
Alexandr Ciornii <alexchorny@gmail.com>, <http://chorny.net> Alberto Re, <alberto@accidia.net> Judith Lebzelter, <judith@osdl.org> COPYRIGHT AND LICENSE
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.5 or, at your option, any later version of Perl 5 you may have available. perl v5.14.2 2012-03-18 Linux::Distribution(3pm)
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