[Pacemaker] clone ip definition and location stops myresources...

Koch, Sebastian Sebastian.Koch at netzwerk.de
Thu May 20 12:40:41 UTC 2010


Thanks for your hints. I had the same issue and your tips nearly
resolved it for me. But i got a question. I setted the default timeout
and afterwards the pingd resource started to work as expected. I had a
IPTABLES Rule dropping icmp on one node and recieved: 

 

============

Last updated: Thu May 20 14:30:20 2010

Stack: openais

Current DC: test01-node1 - partition with quorum

Version: 1.0.8-2c98138c2f070fcb6ddeab1084154cffbf44ba75

2 Nodes configured, 3 expected votes

3 Resources configured.

============

 

Online: [ test01-node2 test01-node1 ]

 

Full list of resources:

 

 Master/Slave Set: ms_drbd_mysql0

     Masters: [ test01-node1 ]

     Slaves: [ test01-node2 ]

 Resource Group: grp_MySQL

     res_Filesystem     (ocf::heartbeat:Filesystem):    Started
test01-node1

     res_ClusterIP      (ocf::heartbeat:IPaddr2):       Started
test01-node1

     res_MySQL  (lsb:mysql):    Started test01-node1

     res_Apache (lsb:apache2):  Started test01-node1

 Clone Set: cl-pinggw

     Started: [ test01-node2 test01-node1 ]

 

Migration summary:

* Node test01-node1:  pingd=100

* Node test01-node2:  pingd=0

 

When i remove the dropping iptables rule with IPTABLES -F the ping works
again BUT the Migration summary doesn't change. I understood it like
this: does the pingd fail the node gets a value like the multiplier (100
in my case). I thought: okay the pingd resource works on both nodes
again so therefore both should have a value of = 100. Am i right or did
i understand it wrong?

 

Here is my working config:

 

node test01-node1 \

        attributes standby="off"

node test01-node2 \

        attributes standby="off"

primitive drbd_test0 ocf:linbit:drbd \

        params drbd_resource="test0" \

        operations $id="drbd_test0-operations"

primitive pinggw ocf:pacemaker:pingd \

        params host_list="10.1.1.162" multiplier="100" \

        op monitor interval="10"

primitive res_Apache lsb:apache2 \

        operations $id="res_Apache-operations" \

        op stop interval="0" timeout="15" \

        op monitor interval="15" timeout="15" start-delay="15" \

        op status interval="0" timeout="15" \

        op start interval="0" timeout="15" \

        meta target-role="Started" is-managed="true"

primitive res_ClusterIP ocf:heartbeat:IPaddr2 \

        params iflabel="ClusterIP" ip="10.1.1.175" \

        operations $id="res_ClusterIP_1-operations" \

        op stop interval="0" timeout="100" \

        op monitor interval="10" timeout="20" start-delay="0" \

        op status interval="10" timeout="20" \

        op start interval="0" timeout="90"

primitive res_Filesystem ocf:heartbeat:Filesystem \

        params fstype="xfs" directory="/mnt/cluster" device="/dev/drbd0"
\

        operations $id="res_Filesystem-operations" \

        op stop interval="0" timeout="60" \

        op monitor interval="20" timeout="40" start-delay="0" \

        op start interval="0" timeout="60"

primitive res_MySQL lsb:mysql \

        operations $id="res_MySQL-operations" \

        op stop interval="0" timeout="15" \

        op monitor interval="15" timeout="15" start-delay="15" \

        op status interval="0" timeout="15" \

        op start interval="0" timeout="15"

group grp_MySQL res_Filesystem res_ClusterIP res_MySQL res_Apache \

        meta target-role="Started"

ms ms_drbd_mysql0 drbd_test0 \

        meta master-max="1" master-node-max="1" clone-max="2"
clone-node-max="1" notify="true"

clone cl-pinggw pinggw \

        meta globally-unique="false"

location cli-prefer-grp_MySQL grp_MySQL \

        rule $id="cli-prefer-rule-grp_MySQL" inf: #uname eq test01-node2

location grp_MySQL-with-pinggw grp_MySQL \

        rule $id="grp_MySQL-with-pinggw-rule-1" -inf: not_defined pingd
or pingd lte 0

colocation col_drbd_on_mysql inf: grp_MySQL ms_drbd_mysql0:Master

order mysql_after_drbd inf: ms_drbd_mysql0:promote grp_MySQL:start

property $id="cib-bootstrap-options" \

        expected-quorum-votes="3" \

        stonith-enabled="false" \

        no-quorum-policy="ignore" \

        dc-version="1.0.8-2c98138c2f070fcb6ddeab1084154cffbf44ba75" \

        cluster-infrastructure="openais" \

        last-lrm-refresh="1274352045" \

        symmetric-cluster="true" \

        default-action-timeout="120s"

rsc_defaults $id="rsc-options" \

        resource-stickiness="100"

 

Thanks in advance.

Regards

Sebastian

 

 

Von: Vadym Chepkov [mailto:vchepkov at gmail.com] 
Gesendet: Dienstag, 11. Mai 2010 19:56
An: The Pacemaker cluster resource manager
Betreff: Re: [Pacemaker] clone ip definition and location stops
myresources...

 

The is no "default" unless it's set, that's why crm complains




On Tue, May 11, 2010 at 12:41 PM, Gianluca Cecchi
<gianluca.cecchi at gmail.com> wrote:

On Tue, May 11, 2010 at 5:47 PM, Vadym Chepkov <vchepkov at gmail.com>
wrote:

pingd is a daemon with is running all the time and does it job
you still need to define monitor operation though, what if the daemon
dies?
op monitor  just have a different meaning for ping and pingd.
with pingd - monitor daemon
with ping - monitor connectivity

as for warnings:

crm configure property default-action-timeout="120s"

 

Thanks again!

Now it is more clear.

 

Only doubt: why pacemaker doesn't set directly as a default 120s for
timeout?

Any drawbacks in setting it to 120?

Also, with

crm configure show

I can see

 property $id="cib-bootstrap-options" \

            dc-version="1.0.8-9881a7350d6182bae9e8e557cf20a3cc5dac3ee7"
\

            cluster-infrastructure="openais" \

            expected-quorum-votes="2" \

            stonith-enabled="false" \

            no-quorum-policy="ignore" \

            last-lrm-refresh="1273484758"

rsc_defaults $id="rsc-options" \

            resource-stickiness="1000"

 

Any way to see what is the default value for "default-action-timeout"
parameter that I'm going to change (I presume it is 20s from the
warnings I received) and for other ones for example that are not shown
with the show command?

 


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