Date: Wed, 21 Nov 2007 14:21:30 +0530
From: <[EMAIL PROTECTED]>
Subject: RE: [Linux-HA] Re: Linux-HA Digest, Vol 48, Issue 69
To: <[email protected]>
Message-ID:
<[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"
Frank,
Congratulations on getting your stonith config to work. Unfortunately,I've not
been so lucky or I don't understand stonith very well. I've done the exact same
configuration as you've but for some reason , the stonith RA doesn't start at
all. I'm using version 2.0.8 and the ssh stonith agent to test my
configuration. I too have two nodes : active and standby, where I want active
to stonith standby and vice versa.
I've attached a snapshot of my stonith configuration for you to look at . I
would really appreciate if you could point out any mistakes I might have made...
<crm_config>
<cluster_property_set id="cib-bootstrap-options">
<attributes>
<nvpair id="cib-bootstrap-options-default-resource-stickiness"
name="default-resource-stickiness" value="INFINITY"/>
<nvpair id="cib-bootstrap-options-stonith" name="stonith-enabled"
value="TRUE"/>
<nvpair id="cib-bootstrap-options-quorum" name="no-quorum-policy"
value="IGNORE"/>
</attributes>
</cluster_property_set>
</crm_config>
<nodes>
<node id="6f6d5305-43e3-46f9-a8d7-7966218bab0b" uname="standby"
type="normal"/>
<node id="bf83d809-e951-4c04-b605-28b5ead6ccfe" uname="active"
type="normal"/>
</nodes>
<resources>
...
...
<clone id="stonith_active">
<instance_attributes id="stonith_active_attr">
<attributes>
<nvpair id="stonith_active_clone_max" name="clone_max" value="1"/>
<nvpair id="stonith_active_clone_node_max" name="clone_node_max"
value="1"/>
</attributes>
</instance_attributes>
<primitive id="Stonith_active" class="stonith" type="external/rsh"
provider="heartbeat">
<operations>
<op id="4" name="start" timeout="10s" prereq="nothing"/>
<op id="5" name="monitor" timeout="5s" interval="15s"/>
</operations>
<instance_attributes id="rsh_active_instance_attr">
<attributes>
<nvpair id="rsh_attr_active" name="hostlist" value="active"/>
</attributes>
</instance_attributes>
</primitive>
</clone>
<clone id="stonith_standby">
<instance_attributes id="stonith_standby_attr">
<attributes>
<nvpair id="stonith_standby_clone_max" name="clone_max" value="1"/>
<nvpair id="stonith_standby_clone_node_max" name="clone_node_max"
value="1"/>
</attributes>
</instance_attributes>
<primitive id="Stonith_standby" class="stonith" type="external/rsh"
provider="heartbeat">
<operations>
<op id="6" name="start" timeout="10s" prereq="nothing"/>
<op id="7" name="monitor" timeout="5s" interval="15s"/>
</operations>
<instance_attributes id="rsh_standby_instance_attr">
<attributes>
<nvpair id="rsh_attr_standby" name="hostlist" value="standby"/>
</attributes>
</instance_attributes>
</primitive>
</clone>
</resources>
<constraints>
<rsc_location id="proxy_stonith_active_rsc_location"
rsc="stonith_active">
<rule id="prefered_location_proxy_stonith_active_rsc" score="INFINITY">
<expression id="prefered_location_proxy_stonith_active_rsc_expr" attribute="#uname"
operation="eq" value="standby"/>
</rule>
</rsc_location>
<rsc_location id="proxy_stonith_standby_rsc_location"
rsc="stonith_standby">
<rule id="prefered_location_proxy_stonith_standby_rsc"
score="INFINITY">
<expression id="prefered_location_proxy_stonith_standby_rsc_expr" attribute="#uname"
operation="eq" value="active"/>
</rule>
</rsc_location>
</constraints>
Regards,
Abhi.
Hi Abhi,
- first I suppose that you have set pulblic keys so that each host can
make ssh to the other without password
- define only one ssh stonith clone resource with hostlist set to both
nodes, with "clone_max" to 2 and "clone_node_max" to 1
- define 2 place constraints with the clone resource, one with "uname eq
node1" on the other with "uname eq 2"
- start stonith resources
I strongly recommend you to read the excellent tutorial
"http://linux-ha.org/_cache/HeartbeatTutorials__LCA2007-tutorial.ppt"; to
clarify concepts.
Frank
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