Issue #11381 has been reported by Jo Rhett.
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Bug #11381: puppetmaster death spiral under passenger -- document the needs!
https://projects.puppetlabs.com/issues/11381
Author: Jo Rhett
Status: Unreviewed
Priority: Immediate
Assignee:
Category: passenger
Target version:
Affected Puppet version: 2.6.12
Keywords:
Branch:
Having run a cfengine master server that handled 25k clients, I guess I should
feel spoiled. But the apparent system requirements for puppetmaster are
phenomenal. With a mere 500 nodes we have a dedicated machine with 4 cores, 8
GB of memory and 6GB of swap, and yet puppetmaster goes into a death spiral
daily. There is nothing on this host other than apache, passenger and
puppetmaster. (and nrpe/nagios test to ensure puppet client is running)
This is what top looks like when it happens:
<pre>
top - 01:18:06 up 1 day, 1:53, 2 users, load average: 185.70, 148.74, 77.73
Tasks: 379 total, 181 running, 198 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 99.8%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.1%hi, 0.1%si, 0.0%st
Mem: 8174508k total, 8132764k used, 41744k free, 524k buffers
Swap: 6094840k total, 6094840k used, 0k free, 19784k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
7938 puppet 18 0 216m 100m 648 R 43.0 1.3 0:02.65 ruby
31786 puppet 19 0 215m 107m 1724 R 34.1 1.3 2:46.71 ruby
364 root 15 0 0 0 0 S 13.2 0.0 1:21.89 pdflush
7868 puppet 19 0 217m 102m 648 R 11.4 1.3 0:05.21 ruby
8028 root 15 0 0 0 0 S 11.4 0.0 0:21.73 pdflush
7804 puppet 19 0 212m 96m 648 R 11.1 1.2 0:02.38 ruby
7802 puppet 18 0 243m 131m 840 R 7.4 1.6 0:06.40 ruby
7692 puppet 19 0 212m 16m 648 R 7.1 0.2 0:06.10 ruby
7573 puppet 18 0 210m 12m 648 R 6.1 0.2 0:13.12 ruby
7900 puppet 18 0 225m 111m 648 R 6.1 1.4 0:05.88 ruby
7926 puppet 19 0 215m 105m 648 R 6.1 1.3 0:03.42 ruby
7941 puppet 18 0 181m 79m 648 R 6.1 1.0 0:02.68 ruby
7561 puppet 18 0 200m 21m 648 R 5.8 0.3 0:13.21 ruby
7792 puppet 18 0 222m 113m 940 R 4.9 1.4 0:11.08 ruby
8113 root 19 0 102m 896 608 R 4.9 0.0 0:01.40 crond
7902 puppet 18 0 209m 100m 852 R 4.3 1.3 0:04.42 ruby
7429 puppet 18 0 207m 25m 648 R 4.0 0.3 0:10.24 ruby
31816 puppet 19 0 225m 117m 1652 R 4.0 1.5 2:28.63 ruby
7685 puppet 18 0 210m 19m 648 R 3.7 0.2 0:10.95 ruby
7918 puppet 18 0 215m 101m 648 R 3.7 1.3 0:03.52 ruby
8121 root 18 0 60476 1144 800 R 3.4 0.0 0:00.73 sshd
31825 puppet 18 0 220m 110m 1652 R 3.4 1.4 2:54.23 ruby
7417 puppet 19 0 198m 30m 648 R 3.1 0.4 0:10.72 ruby
7459 puppet 19 0 206m 17m 648 R 3.1 0.2 0:08.91 ruby
7479 puppet 19 0 199m 17m 648 R 3.1 0.2 0:09.01 ruby
7570 puppet 18 0 205m 19m 648 R 3.1 0.2 0:14.22 ruby
7576 puppet 19 0 212m 12m 648 R 3.1 0.2 0:08.61 ruby
7585 puppet 19 0 207m 18m 648 R 3.1 0.2 0:07.44 ruby
7589 puppet 19 0 204m 14m 648 R 3.1 0.2 0:07.00 ruby
7593 puppet 19 0 181m 81m 1548 R 3.1 1.0 0:37.07 ruby
7620 puppet 19 0 210m 17m 648 R 3.1 0.2 0:07.81 ruby
7625 puppet 19 0 209m 21m 648 R 3.1 0.3 0:08.22 ruby
7652 puppet 18 0 164m 10m 648 R 3.1 0.1 0:03.61 ruby
7656 puppet 19 0 213m 35m 648 R 3.1 0.5 0:18.16 ruby
7669 puppet 19 0 204m 23m 648 R 3.1 0.3 0:10.32 ruby
7672 puppet 19 0 207m 14m 648 R 3.1 0.2 0:06.61 ruby
7676 puppet 20 0 205m 17m 648 R 3.1 0.2 0:07.71 ruby
7708 puppet 18 0 208m 16m 648 R 3.1 0.2 0:04.46 ruby
7739 puppet 19 0 221m 14m 648 R 3.1 0.2 0:04.93 ruby
7743 puppet 19 0 212m 34m 648 R 3.1 0.4 0:04.51 ruby
7747 puppet 19 0 207m 25m 648 R 3.1 0.3 0:08.15 ruby
7794 puppet 19 0 213m 41m 648 R 3.1 0.5 0:07.06 ruby
7842 puppet 18 0 211m 100m 648 R 3.1 1.3 0:06.48 ruby
7850 puppet 19 0 212m 96m 852 R 3.1 1.2 0:05.51 ruby
7852 puppet 19 0 212m 95m 648 R 3.1 1.2 0:01.68 ruby
7855 puppet 19 0 209m 97m 924 R 3.1 1.2 0:10.06 ruby
7872 puppet 19 0 214m 97m 852 R 3.1 1.2 0:08.38 ruby
</pre>
1. Passenger clients are limited to 20. Where did all these other ruby
instances come from? (there is no other ruby code on the system)
2. Why is it willing to spawn until system death? How can I limit this?
CentOS 5.7 with ruby 1.8.5 and all puppet packages from yum.puppetlabs.com
Passenger 3.0.11 at the moment but we first saw this with passenger 2.2 and
upgraded without any change in behavior.
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