[ClusterLabs] [Problem]The pengine core dumps when changing attributes of bundle.

[renayama19661014 at ybb.ne.jp]

Hi All, 

[Sorry..There was a defect in line breaks. to send again.]

I was checking the operation of Bundle with Pacemaker version 2.0.0-9cd0f6cb86. 
When Bundle resource is configured in Pacemaker and attribute is changed, pengine core dumps. 

Step1) Start Pacemaker and pour in the settings. (The replicas and replicas-per-host are set to 1.) 

[root at rh74-test ~]# cibadmin --modify --allow-create --scope resources -X '
<bundle id="httpd-bundle"> <docker image="pcmktest:http" replicas="1" replicas-per-host="1" options="--log-driver=journald" /> <network ip-range-start="192.168.20.188" host-interface="ens192" host-netmask="24"> <port-mapping id="httpd-port" port="80"/> </network> <storage> <storage-mapping id="httpd-root" source-dir-root="/var/local/containers" target-dir="/var/www/html" options="rw"/> <storage-mapping id="httpd-logs" source-dir-root="/var/log/pacemaker/bundles" target-dir="/etc/httpd/logs" options="rw"/> </storage> <primitive class="ocf" id="httpd" provider="heartbeat" type="apache" > <operations> <op id="rabbitmq-monitor-interval-10" interval="10" name="monitor" timeout="40"/> <op id="rabbitmq-start-interval-0s" interval="0s" name="start" timeout="200s"/> <op id="rabbitmq-stop-interval-0s" interval="0s" name="stop" timeout="200s" on-fail="fence" /> </operations> </primitive>
' 

Step2) Bundle is configured. 

[root at rh74-test ~]# crm_mon -1 -Af
Stack: corosync
Current DC: rh74-test (version 2.0.0-9cd0f6cb86) - partition WITHOUT quorum
Last updated: Fri Mar  9 10:09:20 2018
Last change: Fri Mar  9 10:06:30 2018 by root via cibadmin on rh74-test 2 nodes configured

4 resources configured Online: [ rh74-test ]
GuestOnline: [ httpd-bundle-0 at rh74-test ] 

Active resources: 
Docker container: httpd-bundle [pcmktest:http] httpd-bundle-0 (192.168.20.188)      (ocf::heartbeat:apache):        

Started rh74-test Node Attributes:
* Node httpd-bundle-0 at rh74-test:
* Node rh74-test: Migration Summary:
* Node rh74-test:
* Node httpd-bundle-0 at rh74-test: 

Step3) Change attributes of bundle with cibadmin command. (The replicas and replicas-per-host change to 3.)


[root at rh74-test ~]# cibadmin --modify -X '<docker image="pcmktest:http" replicas="3" replicas-per-host="3" options="--log-driver=journald"/>' 

Step4) The pengine will core dump. (snip)
Mar  9 10:10:21 rh74-test pengine[17726]:  notice: On loss of quorum: Ignore
Mar  9 10:10:21 rh74-test pengine[17726]:    info: Node rh74-test is online
Mar  9 10:10:21 rh74-test crmd[17727]:  error: Connection to pengine failed
Mar  9 10:10:21 rh74-test crmd[17727]:  error: Connection to pengine[0x55f2d068bfb0] closed (I/O condition=25)
Mar  9 10:10:21 rh74-test pacemakerd[17719]:  error: Managed process 17726 (pengine) dumped core
Mar  9 10:10:21 rh74-test pacemakerd[17719]:  error: pengine[17726] terminated with signal 11 (core=1)
Mar  9 10:10:21 rh74-test pacemakerd[17719]:  notice: Respawning failed child process: pengine
Mar  9 10:10:21 rh74-test pacemakerd[17719]:    info: Using uid=990 and group=984 for process pengine
Mar  9 10:10:21 rh74-test pacemakerd[17719]:    info: Forked child 19275 for process pengine
(snip) 

This event reproduces 100 percent. 

Apparently the problem seems to be due to different handling of clone(httpd) resources in the Bundle resource. 

- I registered this content with the following Bugzilla.
(https://bugs.clusterlabs.org/show_bug.cgi?id=5337)

Best Regards
Hideo Yamauchi.