I figured out what was wrong eventually, and I'd like to share the risults
with you all.
I realized that the way to query the status is the following:
cibadmin --query --scope=status | grep pingd
And that if I don't configure and start the cloned ping gateway resource,
I'll never be able to have an answer like this from that query:
<nvpair id="status-SDGRMA-pingd" name="pingd" value="1000"/>
<nvpair id="status-SDGRMB-pingd" name="pingd" value="1000"/>
So the constraint
location loc-active-ping grp-all rule $id="loc-active-ping-rule"
-inf: not_defined pingd or pingd lte 0
will always shut down every resource dependent from the "pingd" attribute
(the resource group 'grp-all' in this example form my peculiar
configuration)
Everything seems to be working fine now.
Thank you Andrew for your time, your support has been very appreciated
Regards
Guglielmo
-----Messaggio originale-----
Da: linux-ha-boun...@lists.linux-ha.org
[mailto:linux-ha-boun...@lists.linux-ha.org] Per conto di Andrew Beekhof
Inviato: mercoledì 17 ottobre 2012 01:02
A: General Linux-HA mailing list
Oggetto: Re: [Linux-HA] cloned ping gateway not working
On Tue, Oct 16, 2012 at 8:57 PM, Guglielmo Abbruzzese <g.abbruzz...@resi.it>
wrote:
> Hi,
> a question probably easy but I'm stuck on it by now.
> I have Pacemaker installed from the RHEL62 repository, and I have some
> resources that should be operating just if an external ping gateway
> answers the ping request.
>
> I performed a simplified configuration in order to test the following
> behavior: if the ping gateway is not reached the other resource should
> shut down (and swap on the other node). I also avoided to clone the
> resource in the test configuration.
>
> There are a couple of things I'm not able to understand.
>
> 1. MISSING PING GATEWAY NOT DETECTED. if I detach the network
> interface leading to the gateway, I'd expect Pacemaker to get that.
How long did you wait?
Based on your config, it could take up to 30s (5 + 5 + 20) for anything to
happen.
> It doesn't happen;
> furthermore, in the message log I get what follows:
>
> Oct 16 11:29:34 SDGRMA lrmd: [29124]: info: perform_op:2884: operation
> monitor[49] on ocf::ping::resource_ping_gateway for client 29127, its
> parameters: CRM_meta_interval=[5000] host_list=[172.16.8.20]
> name=[ping_gateway] dampen=[5s] crm_feature_set=[3.0.5]
> CRM_meta_enabled=[true] CRM_meta_on_fail=[restart]
> CRM_meta_name=[monitor] multiplier=[1000] CRM_meta_timeout=[20000]
> CRM_meta_requires=[nothing] for rsc is already running.
> Oct 16 11:29:34 SDGRMA lrmd: [29124]: info: perform_op:2894:
> postponing all ops on resource resource_ping_gateway by 1000 ms
>
> 2. DIFFICULTY SETTING THE "DON'T RUN ON UNCONNECTED NODES" OPTION
> (example
> 9.3 in Pacemaker online docs). If I try to set this constraint, even
> if the ping gateway is available the virtual ip stops (until the
> constraint is removed). What's wrong?
>
> crm configure log-active ping rule -inf: not_defined
> resource_ping_gateway or resource_ping_gateway lte 0 (pls see cib down
> here)
This should be:
crm configure log-active ping rule -inf: not_defined ping_gateway or
ping_gateway lte 0
because of:
<nvpair id="resource_ping_gateway-instance_attributes-name"
name="name" value="ping_gateway"/>
> I've read somewhere it is possible to use something like that to check
> the pingd status
> "crm_attribute -G -t status -N -n pingd"
> But I can't find any "pingd" attribute in my cib.
Thats because (as above) you called it "ping_gateway".
>
> -------
>
> Any suggestion will be really appreciated.
> Thanks a lot
> G.
> -------
>
> TEST CIB
>
> I set 2 resources: a ping gateway (still to clone) and a virtual IP.
>
> <cib epoch="82" num_updates="0" admin_epoch="0"
> validate-with="pacemaker-1.2" crm_feature_set="3.0.5"
update-origin="SDGRMA"
> update-client="cibadmin" cib-last-written="Mon Oct 15 18:47:45 2012"
> have-quorum="1" dc-uuid="SDGRMA">
> <configuration>
> <crm_config>
> <cluster_property_set id="cib-bootstrap-options">
> <nvpair id="cib-bootstrap-options-dc-version" name="dc-version"
> value="1.1.6-3.el6-a02c0f19a00c1eb2527ad38f146ebc0834814558"/>
> <nvpair id="cib-bootstrap-options-cluster-infrastructure"
> name="cluster-infrastructure" value="openais"/>
> <nvpair id="cib-bootstrap-options-expected-quorum-votes"
> name="expected-quorum-votes" value="2"/>
> <nvpair id="cib-bootstrap-options-no-quorum-policy"
> name="no-quorum-policy" value="ignore"/>
> <nvpair id="cib-bootstrap-options-symmetric-cluster"
> name="symmetric-cluster" value="false"/>
> <nvpair id="cib-bootstrap-options-stonith-enabled"
> name="stonith-enabled" value="false"/>
> <nvpair id="cib-bootstrap-options-start-failure-is-fatal"
> name="start-failure-is-fatal" value="false"/>
> </cluster_property_set>
> </crm_config>
> <nodes>
> <node id="SDGRMA" type="normal" uname="SDGRMA"/>
> <node id="SDGRMB" type="normal" uname="SDGRMB"/>
> </nodes>
> <resources>
> <primitive class="ocf" id="resource_ping_gateway"
provider="pacemaker"
> type="ping">
> <instance_attributes
id="resource_ping_gateway-instance_attributes">
> <nvpair id="resource_ping_gateway-instance_attributes-host_list"
> name="host_list" value="172.16.8.20"/>
> <nvpair id="resource_ping_gateway-instance_attributes-dampen"
> name="dampen" value="5s"/>
> <nvpair
id="resource_ping_gateway-instance_attributes-multiplier"
> name="multiplier" value="1000"/>
> <nvpair id="resource_ping_gateway-instance_attributes-name"
> name="name" value="ping_gateway"/>
> </instance_attributes>
> <operations>
> <op enabled="true" id="resource_ping_gateway-startup"
> interval="5s" name="monitor" on-fail="restart" requires="nothing"
> timeout="20s"/>
> <op id="resource_ping_gateway-start-0" interval="0" name="start"
> timeout="180s"/>
> <op id="resource_ping_gateway-stop-0" interval="0" name="stop"
> timeout="180s"/>
> </operations>
> <meta_attributes id="resource_ping_gateway-meta_attributes">
> <nvpair id="resource_ping_gateway-meta_attributes-target-role"
> name="target-role" value="Started"/>
> </meta_attributes>
> </primitive>
> <primitive class="ocf" id="resource_vrt_ip" provider="heartbeat"
> type="IPaddr2">
> <instance_attributes id="resource_vrt_ip-instance_attributes">
> <nvpair id="resource_vrt_ip-instance_attributes-ip" name="ip"
> value="192.168.15.73"/>
> <nvpair id="resource_vrt_ip-instance_attributes-nic" name="nic"
> value="bond0"/>
> </instance_attributes>
> <meta_attributes id="resource_vrt_ip-meta_attributes">
> <nvpair id="resource_vrt_ip-meta_attributes-target-role"
> name="target-role" value="Started"/>
> <nvpair id="resource_vrt_ip-meta_attributes-multiple-active"
> name="multiple-active" value="stop_start"/>
> <nvpair id="resource_vrt_ip-meta_attributes-migration-threshold"
> name="migration-threshold" value="3"/>
> <nvpair id="resource_vrt_ip-meta_attributes-failure-timeout"
> name="failure-timeout" value="0"/>
> </meta_attributes>
> <operations>
> <op enabled="true" id="resource_vrt_ip-startup" interval="60"
> name="monitor" on-fail="restart" requires="nothing" timeout="180s"/>
> <op id="resource_vrt_ip-start-0" interval="0" name="start"
> timeout="180s"/>
> <op id="resource_vrt_ip-stop-0" interval="0" name="stop"
> timeout="180s"/>
> </operations>
> </primitive>
> </resources>
> <constraints>
> <rsc_location id="loc-1a" node="SDGRMA" rsc="resource_ping_gateway"
> score="200"/>
> <rsc_location id="loc-1b" node="SDGRMB" rsc="resource_ping_gateway"
> score="0"/>
> <rsc_location id="loc-2a" node="SDGRMA" rsc="resource_vrt_ip"
> score="200"/>
> <rsc_location id="loc-2b" node="SDGRMB" rsc="resource_vrt_ip"
> score="0"/>
> </constraints>
> </configuration>
> </cib>
>
>
>
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