On 7 Mar 2014, at 5:31 am, Attila Megyeri <amegy...@minerva-soft.com> wrote:
> Hello, > > We have a strange issue with Corosync/Pacemaker. > From time to time, something unexpected happens and suddenly the crm_mon > output remains static. > When I check the cpu usage, I see that one of the cores uses 100% cpu, but > cannot actually match it to either the corosync or one of the pacemaker > processes. > > In such a case, this high CPU usage is happening on all 7 nodes. > I have to manually go to each node, stop pacemaker, restart corosync, then > start pacemeker. Stoping pacemaker and corosync does not work in most of the > cases, usually a kill -9 is needed. > > Using corosync 2.3.0, pacemaker 1.1.10 on Ubuntu trusty. > > Using udpu as transport, two rings on Gigabit ETH, rro_mode passive. > > Logs are usually flooded with CPG related messages, such as: > > Mar 06 18:10:49 [1316] ctsip1 crmd: info: crm_cs_flush: Sent > 0 CPG messages (1 remaining, last=8): Try again (6) > Mar 06 18:10:49 [1316] ctsip1 crmd: info: crm_cs_flush: Sent > 0 CPG messages (1 remaining, last=8): Try again (6) > Mar 06 18:10:50 [1316] ctsip1 crmd: info: crm_cs_flush: Sent > 0 CPG messages (1 remaining, last=8): Try again (6) > Mar 06 18:10:50 [1316] ctsip1 crmd: info: crm_cs_flush: Sent > 0 CPG messages (1 remaining, last=8): Try again (6) > > OR > > Mar 06 17:46:24 [1341] ctdb1 cib: info: crm_cs_flush: Sent > 0 CPG messages (1 remaining, last=10933): Try again ( > Mar 06 17:46:24 [1341] ctdb1 cib: info: crm_cs_flush: Sent > 0 CPG messages (1 remaining, last=10933): Try again ( > Mar 06 17:46:24 [1341] ctdb1 cib: info: crm_cs_flush: Sent > 0 CPG messages (1 remaining, last=10933): Try again ( That is usually a symptom of corosync getting into a horribly confused state. Version? Distro? Have you checked for an update? Odd that the user of all that CPU isn't showing up though. > > > HTOP show something like this (sorted by TIME+ descending): > > > > 1 [||||||||||||||||||||||||||||||||||||||||100.0%] Tasks: 59, 4 thr; 2 > running > 2 [| 0.7%] Load average: 1.00 > 0.99 1.02 > Mem[|||||||||||||||||||||||||||||||| 165/994MB] Uptime: 1 day, > 10:22:03 > Swp[ 0/509MB] > > PID USER PRI NI VIRT RES SHR S CPU% MEM% TIME+ Command > 921 root 20 0 188M 49220 33856 R 0.0 4.8 3h33:58 > /usr/sbin/corosync > 1277 snmp 20 0 45708 4248 1472 S 0.0 0.4 1:33.07 /usr/sbin/snmpd > -Lsd -Lf /dev/null -u snmp -g snm > 1311 hacluster 20 0 109M 16160 9640 S 0.0 1.6 1:12.71 > /usr/lib/pacemaker/cib > 1312 root 20 0 104M 7484 3780 S 0.0 0.7 0:38.06 > /usr/lib/pacemaker/stonithd > 1611 root -2 0 4408 2356 2000 S 0.0 0.2 0:24.15 > /usr/sbin/watchdog > 1316 hacluster 20 0 122M 9756 5924 S 0.0 1.0 0:22.62 > /usr/lib/pacemaker/crmd > 1313 root 20 0 81784 3800 2876 S 0.0 0.4 0:18.64 > /usr/lib/pacemaker/lrmd > 1314 hacluster 20 0 96616 4132 2604 S 0.0 0.4 0:16.01 > /usr/lib/pacemaker/attrd > 1309 root 20 0 104M 4804 2580 S 0.0 0.5 0:15.56 pacemakerd > 1250 root 20 0 33000 1192 928 S 0.0 0.1 0:13.59 ha_logd: read > process > 1315 hacluster 20 0 73892 2652 1952 S 0.0 0.3 0:13.25 > /usr/lib/pacemaker/pengine > 1252 root 20 0 33000 712 456 S 0.0 0.1 0:13.03 ha_logd: write > process > 1835 ntp 20 0 27216 1980 1408 S 0.0 0.2 0:11.80 /usr/sbin/ntpd > -p /var/run/ntpd.pid -g -u 105:112 > 899 root 20 0 19168 700 488 S 0.0 0.1 0:09.75 > /usr/sbin/irqbalance > 1642 root 20 0 30696 1556 912 S 0.0 0.2 0:06.49 /usr/bin/monit > -c /etc/monit/monitrc > 4374 kamailio 20 0 291M 7272 2188 S 0.0 0.7 0:02.77 > /usr/local/sbin/kamailio -f /etc/kamailio/kamaili > 3079 root 0 -20 16864 4592 3508 S 0.0 0.5 0:01.51 /usr/bin/atop > -a -w /var/log/atop/atop_20140306 6 > 445 syslog 20 0 249M 6276 976 S 0.0 0.6 0:01.16 rsyslogd > 4373 kamailio 20 0 291M 7492 2396 S 0.0 0.7 0:01.03 > /usr/local/sbin/kamailio -f /etc/kamailio/kamaili > 1 root 20 0 33376 2632 1404 S 0.0 0.3 0:00.63 /sbin/init > 453 syslog 20 0 249M 6276 976 S 0.0 0.6 0:00.63 rsyslogd > 451 syslog 20 0 249M 6276 976 S 0.0 0.6 0:00.53 rsyslogd > 4379 kamailio 20 0 291M 6224 1132 S 0.0 0.6 0:00.38 > /usr/local/sbin/kamailio -f /etc/kamailio/kamaili > 4380 kamailio 20 0 291M 8516 3084 S 0.0 0.8 0:00.38 > /usr/local/sbin/kamailio -f /etc/kamailio/kamaili > 4381 kamailio 20 0 291M 8252 2828 S 0.0 0.8 0:00.37 > /usr/local/sbin/kamailio -f /etc/kamailio/kamaili > 23315 root 20 0 24872 2476 1412 R 0.7 0.2 0:00.37 htop > 4367 kamailio 20 0 291M 10000 4864 S 0.0 1.0 0:00.36 > /usr/local/sbin/kamailio -f /etc/kamailio/kamaili > > > My questions: > - Is this a cororync or pacameker issue? > - What are the CPG messages? Is it possible that we have a firewall issue? > > > Any hints would be great! > > Thanks, > Attila > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org
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_______________________________________________ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
