Re: [Pacemaker] Notification when a node is down
On 09/12/2014 02:30 AM, Sihan Goi wrote: Is there any way for a Pacemaker/Corosync/PCS setup to send a notification when it detects that a node in a cluster is down? I read that Pacemaker and Corosync logs events to syslog, but where is the syslog file in CentOS? Do they log events such as a failover occurrence? Pacemaker/corosync do extensive logging, even more so if debug is set to on in corosync.conf. Syslog is configurable to log the messages however you want; the default file locations vary from OS to OS. Monitoring and notification are usually handled by a dedicated package for that purpose, such as nagios, icinga, monit or zabbix. These packages can monitor services on the nodes directly, as well as the health of pacemaker itself. Here, we use icinga with Phil Garner's check_crm plugin: https://www.icinga.org/ https://github.com/dnsmichi/icinga-plugins/blob/master/scripts/check_crm -- Ken Gaillot kjgai...@gleim.com Network Operations Center, Gleim Publications ___ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
Re: [Pacemaker] Notification when a node is down
- Original Message - Hi, Is there any way for a Pacemaker/Corosync/PCS setup to send a notification when it detects that a node in a cluster is down? I read that Pacemaker and Corosync logs events to syslog, but where is the syslog file in CentOS? Do they log events such as a failover occurrence? This might be a useful reference. http://clusterlabs.org/doc/en-US/Pacemaker/1.1-pcs/html-single/Pacemaker_Explained/index.html#idm207039249856 -- Vossel Thanks. -- - Goi Sihan gois...@gmail.com ___ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org ___ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
Re: [Pacemaker] Notification when a node is down
On 15 September 2014 16:49, David Vossel dvos...@redhat.com wrote:
This might be a useful reference.
http://clusterlabs.org/doc/en-US/Pacemaker/1.1-pcs/html-single/Pacemaker_Explained/index.html#idm207039249856
I've been having trouble with this too, and I spent ages on the above
link trying to make it work.
I've got the MailTo resource setup as a clone on all nodes. I get
emails telling me when a resource moves to or away from a node. But I
get nothing at all if a resource has failed for some reason and just
ends up in the stopped state.
I can't get ClusterMon to work with email notifications. Looking
through the source I can't see how it can ever work.
Looking at /usr/lib/ocf/resource.d/pacemaker/ClusterMon the start
method runs a command like this:
${HA_SBIN_DIR}/crm_mon -p $OCF_RESKEY_pidfile -d -i $OCF_RESKEY_update
$OCF_RESKEY_extra_options -h $OCF_RESKEY_htmlfile
The example in the documentation uses the extra_options parameter to
pass through the email settings.
nvpair id=ClusterMon-instance_attributes-extra_options
name=extra_options value=-T pacema...@example.com -F
pacema...@node2.example.com -P PACEMAKER -H mail.example.com/
But the man page for crm_mon doesn't say anything about -T, -F, or
-P options! crm_mon has no ability at all to send email. I
eventually gave up and assumed that the documentation for this feature
was either out of date or just plain wrong.
This is with Pacemaker 1.1.10 from CentOS7 default repository.
pacemaker-cli-1.1.10-32.el7_0.x86_64
If the documentation for email notifications (7.2) *is* correct, then
could someone give me a hint as to what I'm doing wrong?
Thanks!
___
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Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
Bugs: http://bugs.clusterlabs.org
Re: [Pacemaker] Notification when a node is down
Am Montag, 15. September 2014, 10:59:39 schrieb Ken Gaillot: On 09/12/2014 02:30 AM, Sihan Goi wrote: Is there any way for a Pacemaker/Corosync/PCS setup to send a notification when it detects that a node in a cluster is down? I read that Pacemaker and Corosync logs events to syslog, but where is the syslog file in CentOS? Do they log events such as a failover occurrence? This is the job of a monitoring system. The monitoring system checks the state of the cluster form time to time and sends out notifications if anything is not as expected. You cannoy rely only on a cluster-centric solution. If all nodes are down, your users will notice. If you have a good monitoring system, it will recognize first and alert you. So you need external monitoring. I prefer SNMP since it is the only IETF standard in management protocols. Mit freundlichen Grüßen, Michael Schwartzkopff -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64, +49 (162) 165 0044 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein signature.asc Description: This is a digitally signed message part. ___ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
[Pacemaker] Notification when a node is down
Hi, Is there any way for a Pacemaker/Corosync/PCS setup to send a notification when it detects that a node in a cluster is down? I read that Pacemaker and Corosync logs events to syslog, but where is the syslog file in CentOS? Do they log events such as a failover occurrence? Thanks. -- - Goi Sihan gois...@gmail.com ___ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
