[Pacemaker] [PING] ping, pingd and CIB updates, pick your poison :)

[Andrew Beekhof]

On Wed, Jul 28, 2010 at 8:45 AM, Thomas Guthmann <tguthmann at iseek.com.au> wrote:
> Hey,
>
> As much as I like pacemaker I hate these ping tests which don't update the
> CIB. After reading a lot on the mailing list I see that people are still a
> lot confused. So can one of the main developers give an example that should
> work like "how to check your connectivity" ? (the wiki still talk about
> pingd for instance). I don't know if my rules are "by the rule book" :
>
> primitive ping ocf:pacemaker:ping \
>        params host_list="192.168.1.100" dampen="121" attempts="3"
> debug="true" \
>        op monitor interval="10s" timeout="20s"
>
> location rule-connectivity DB \
>        rule $id="rule-ping" -inf: not_defined pingd or pingd number:lte 0
>
> My problem is that the CIB is not updated when I lost connectivity even with
> pacemaker:ping instead of obsolete pacemaker:pingd (that I used before). I
> upgraded from corosync/pacemaker 1.2.1/1.0.8 to the latest 1.2.5/1.0.9-11
> but I still have the problem. Indeed, if my gateway (or a fake IP I'm using
> for tests) is down I can see that ping is working correctly but
> attrd_updater does _NOT_ update the CIB.

How long did you wait?

dampen="121" means that attrd will wait just over 2 minutes before
updating the CIB

> But if I do attrd_updated -R it
> updates the value. Note: I used one node only to reduce the variables during
> the tests so it's not something due to concurrency. See logs below. I can
> provide a hb_report if necessary.
>
> Any ideas ? Bug or PEBKAC ?
>
> Cheers,
> Thomas
>
> ---
>
> Jul 28 15:36:05 db1 attrd_updater: [5133]: info: Invoked: attrd_updater -n
> pingd -v 1 -d 121
> Jul 28 15:36:17 db1 attrd_updater: [5150]: info: Invoked: attrd_updater -n
> pingd -v 1 -d 121
> Jul 28 15:36:29 db1 attrd_updater: [5165]: info: Invoked: attrd_updater -n
> pingd -v 1 -d 121
> Jul 28 15:36:47 db1 ping[5169]: WARNING: 192.168.1.100 is inactive: PING
> 192.168.1.100 (192.168.1.100) 56(84) bytes of data.#012#012--- 192.168.1.100
> ping statistics ---#0123 packets transmitted, 0 received, +2 errors, 100%
> packet loss, time 1999ms#012, pipe 2
> Jul 28 15:36:47 db1 attrd_updater: [5189]: info: Invoked: attrd_updater -n
> pingd -v 0 -d 121
> Jul 28 15:37:05 db1 ping[5196]: WARNING: 192.168.1.100 is inactive: PING
> 192.168.1.100 (192.168.1.100) 56(84) bytes of data.#012#012--- 192.168.1.100
> ping statistics ---#0123 packets transmitted, 0 received, +1 errors, 100%
> packet loss, time 1999ms
> Jul 28 15:37:05 db1 attrd_updater: [5212]: info: Invoked: attrd_updater -n
> pingd -v 0 -d 121
> Jul 28 15:37:23 db1 ping[5218]: WARNING: 192.168.1.100 is inactive: PING
> 192.168.1.100 (192.168.1.100) 56(84) bytes of data.#012#012--- 192.168.1.100
> ping statistics ---#0123 packets transmitted, 0 received, +1 errors, 100%
> packet loss, time 1999ms
> ...
> .....
> .......
> Jul 28 15:56:01 db1 ping[7803]: WARNING: 192.168.1.100 is inactive: PING
> 192.168.1.100 (192.168.1.100) 56(84) bytes of data.#012#012--- 192.168.1.100
> ping statistics ---#0123 packets transmitted, 0 received, +1 errors, 100%
> packet loss, time 1999ms
> Jul 28 15:56:01 db1 attrd_updater: [7819]: info: Invoked: attrd_updater -n
> pingd -v 0 -d 121
>
> [root at db1:~]# cibadmin -Ql | grep nvpair.*ping
>            <nvpair id="ping-instance_attributes-host_list" name="host_list"
> value="192.168.1.100"/>
>            <nvpair id="ping-instance_attributes-dampen" name="dampen"
> value="121"/>
>            <nvpair id="ping-instance_attributes-attempts" name="attempts"
> value="3"/>
>            <nvpair id="ping-instance_attributes-debug" name="debug"
> value="true"/>
>          <nvpair id="status-db1.xxx-pingd" name="pingd" value="1"/>
>
> # attrd_updater -R
> # cibadmin -Ql | grep nvpair.*ping
>            <nvpair id="ping-instance_attributes-host_list" name="host_list"
> value="192.168.1.100"/>
>            <nvpair id="ping-instance_attributes-dampen" name="dampen"
> value="121"/>
>            <nvpair id="ping-instance_attributes-attempts" name="attempts"
> value="3"/>
>            <nvpair id="ping-instance_attributes-debug" name="debug"
> value="true"/>
>          <nvpair id="status-db2.xxx-pingd" name="pingd" value="0"/>
>          <nvpair id="status-db1.xxx-pingd" name="pingd" value="0"/>
>
> #
>
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