08-21-2009
Quote:
Originally Posted by
zxmaus
[...]is it possible to failover a hacmp cluster in one datacentre via SRDF to a single node in another datacentre, or do I need a cluster there in any case? [...]
It is possible but not out of the box and an automated solution would be pretty complicated. That in combination with High Availability is bad. You'd need a lot of scripts to check the environment so that that standalone node integrates into the HACMP cluster in all normal and abnormal situations. Furthermore you'd hardly get any support. So don't do that. Use a three node cluster between your two data centres or use a two node cluster in one.
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LEARN ABOUT CENTOS
crm_attribute
PACEMAKER(8) System Administration Utilities PACEMAKER(8)
NAME
Pacemaker - Part of the Pacemaker cluster resource manager
SYNOPSIS
crm_attribute command -n attribute [options]
DESCRIPTION
crm_attribute - Manage node's attributes and cluster options.
Allows node attributes and cluster options to be queried, modified and deleted.
OPTIONS
-?, --help
This text
-$, --version
Version information
-V, --verbose
Increase debug output
-q, --quiet
Print only the value on stdout
-n, --name=value
Name of the attribute/option to operate on
Commands:
-G, --query
Query the current value of the attribute/option
-v, --update=value
Update the value of the attribute/option
-D, --delete
Delete the attribute/option
Additional Options:
-N, --node=value
Set an attribute for the named node (instead of a cluster option). See also: -l
-t, --type=value
Which part of the configuration to update/delete/query the option in. Valid values: crm_config, rsc_defaults, op_defaults, tickets
-l, --lifetime=value
Lifetime of the node attribute. Valid values: reboot, forever
-z, --utilization
Set an utilization attribute for the node.
-s, --set-name=value
(Advanced) The attribute set in which to place the value
-i, --id=value
(Advanced) The ID used to identify the attribute
-d, --default=value
(Advanced) The default value to display if none is found in the configuration
EXAMPLES
Add a new attribute called 'location' with the value of 'office' for host 'myhost':
# crm_attribute --node myhost --name location --update office
Query the value of the 'location' node attribute for host myhost:
# crm_attribute --node myhost --name location --query
Change the value of the 'location' node attribute for host myhost:
# crm_attribute --node myhost --name location --update backoffice
Delete the 'location' node attribute for the host myhost:
# crm_attribute --node myhost --name location --delete
Query the value of the cluster-delay cluster option:
# crm_attribute --type crm_config --name cluster-delay --query
Query the value of the cluster-delay cluster option. Only print the value:
# crm_attribute --type crm_config --name cluster-delay --query --quiet
AUTHOR
Written by Andrew Beekhof
REPORTING BUGS
Report bugs to pacemaker@oss.clusterlabs.org
Pacemaker 1.1.10-29.el7 June 2014 PACEMAKER(8)