Linux Clustering


 
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Old 08-04-2011
Linux Clustering

hi guys

Some time ago I used Linux HA(Heartbeat) to setup like 3 cluster.

Now I have to install another 2 cluster and was checking more info to be sure HA was still used but I found some other stuff like OpenAIS - Corosync - Pacemaker to tell you the truth I am kinda confused here

I get Pacemaker needs to be install since it will monitoring if the service is up and running and heartbeat the one I used some time ago is the cluster messaging layer but I understand have been replaced by OpenAIS and Corosync

is that true? now I have to use OpenAIS or Corosync or both instead of heartbeat?

or do you know any other cluster technology?

Basically I need to setup 2 types of cluster of with shared Storage and one without shared Storage (that's why DRBD) but since the one using shared storage won't need DRBD I was trying to understand this heartbeat-openais-corosync stuff

any guidance

thanks a lot

Last edited by pludi; 08-04-2011 at 08:10 AM..
 
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1.1.7(8)						  System Administration Utilities						  1.1.7(8)

NAME
1.1.7 - Part of the Pacemaker cluster resource manager SYNOPSIS
crm_report -f "YYYY-M-D H:M:S" [-t "YYYY-M-D H:M:S"] [additional options] [dest] DESCRIPTION
crm_report - Create a tarball containing everything needed when reporting cluster problems OPTIONS
-V increase verbosity -v,--version software version --features software features -f, --from time time to start from: "YYYY-M-D H:M:S" (do not forget the quotes) -t, --to time time to finish at (default: now) -T, --cts test CTS test or set of tests to extract --cts-log CTS master logfile -n, --nodes nodes node names for this cluster only needed if the cluster is not active on the current machine accepts both -n "a b" and -n a -n b -l, --logfile file log file to collect, normally this will be determined automatically -p patt additional regular expression to match variables to be removed (default: "passw.*") -L patt additional regular expression to match in log files for analysis (default: CRIT: ERROR:) -M collect only the logs specified by -l -S, --single-node single node operation; don't try to start report collectors on other nodes -c, --cluster type force the cluster type (corosync,openais,heartbeat,logmaster) -A, --openais force the cluster type to be OpenAIS -C, --corosync force the cluster type to be CoroSync -H, --heartbeat force the cluster type to be Heartbeat -u, --user user ssh username for cluster nodes (default: root) --dest a custom destination directory/file dest a custom destination directory/file EXAMPLES
crm_report -f "2011-12-14 13:05:00" unexplained-apache-failure crm_report -f 2011-12-14 -t 2011-12-15 something-that-took-multiple days crm_report -f 13:05:00 -t 13:12:00 brief-outage 1.1.7 - ee0730e13d124c3d58f00016c3376a1de5323cff April 2012 1.1.7(8)