Pacemaker - Corosync - HA - Simple Custom Resource Testing - Status flapping - Started - Failed - Stopped - Started
2
votes
1
answer
5355
views
I am testing using the OCF:Heartbeat:Dummy script and I want to make a very basic setup just to know it works and build on that.
The only information I can find was this web blog here.
https://raymii.org/s/tutorials/Corosync_Pacemaker_-_Execute_a_script_on_failover.html
It has some typos but basically worked for me.
The script currently just contains the following :
sudo nano /usr/local/bin/failover.sh && sudo chmod +x /usr/local/bin/failover.sh
#!/bin/sh
touch /tmp/testfailover.sh
Here is my setup :
cp /usr/lib/ocf/resource.d/heartbeat/Dummy /usr/lib/ocf/resource.d/heartbeat/FailOverScript
sudo nano /usr/lib/ocf/resource.d/heartbeat/FailOverScript
dummy_start() {
dummy_monitor
/usr/local/bin/failover.sh
if [ $? = $OCF_SUCCESS ]; then
return $OCF_SUCCESS
fi
touch ${OCF_RESKEY_state}
}
sed -i 's/Dummy/FailOverScript/g' /usr/lib/ocf/resource.d/heartbeat/FailOverScript
sed -i 's/dummy/FailOverScript/g' /usr/lib/ocf/resource.d/heartbeat/FailOverScript
pcs resource create FailOverScript ocf:heartbeat:FailOverScript op monitor interval="30"
The only testing I can really do :
[root@node2 ~]# /usr/lib/ocf/resource.d/heartbeat/FailOverScript start ; echo $?
DEBUG: default start : 0
0
ocf-tester doesn't seem to exist in the latest HA Software Suite, not really sure how to manually install it, but the script "half works".
**The script doesn't need monitoring, its supposed to be very basic, but it seems to be flapping and giving me the following error code. Any idea's what to do?**
FailOverScript (ocf::heartbeat:FailOverScript): Started
node2
Failed Actions:
* FailOverScript_monitor_30000 on node2 'not running' (7): call=
24423, status=complete, exitreason='none',
last-rc-change='Tue Aug 16 15:53:50 2016', queued=0ms, exec=
9ms
**Example of what I want to do:**
Cluster start
Script runs "start.sh"
Cluster fails over to node2.
On node1 script runs "fail.sh"
On node2 script runs "start.sh"
and vis versa if it fails the other direction.
Note: The script does work, I get /tmp/testfailover.sh. I even tried putting another script under dummy_stop to remove the file and that worked, but it just keeps flapping along removing/adding/removing/adding file and starting/failing/stoping/starting etc etc.
Thanks for reading!
Asked by FreeSoftwareServers
(2682 rep)
Aug 16, 2016, 07:56 PM
Last activity: Dec 21, 2020, 06:56 AM
Last activity: Dec 21, 2020, 06:56 AM