hi chef community,
i just installed the chef and chef-server via apt on ubuntu lucid - the setup is super easy and simply works.
but i noticed an increased server load of 1.5 - 2.0 with just running chef on the server.
when looking at the top output (before/after) below and you see that the merb-workers are permanently running and causing the load.
their is no real action (no connected nodes, etc.) on the server, i just installed “apt-get install chef chef-server”.
if this is the normal server load - what mininmal hardware requirements does you suggest to manage a 50 node cluster in production ?
test environment:
- ubuntu lucid ec2 ami (32-bit ami-cf4d67bb)
- ec2 c1.medium (2 x @2.33Ghz, 1.8 GB ram)
- chef version 0.9.4
BEFORE INSTALLING CHEF
top - 11:56:37 up 5 min, 1 user, load average: 0.01, 0.01, 0.00
Tasks: 72 total, 1 running, 71 sleeping, 0 stopped, 0 zombie
Cpu0 : 0.9%us, 0.3%sy, 0.0%ni, 98.7%id, 0.2%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu1 : 0.8%us, 0.1%sy, 0.4%ni, 98.4%id, 0.1%wa, 0.0%hi, 0.0%si, 0.1%st
Mem: 1781976k total, 155492k used, 1626484k free, 3392k buffers
Swap: 917496k total, 0k used, 917496k free, 90472k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1 root 20 0 2680 1612 1204 S 0 0.1 0:00.15 /sbin/init
2 root 20 0 0 0 0 S 0 0.0 0:00.00 [kthreadd]
3 root RT 0 0 0 0 S 0 0.0 0:00.00 [migration/0]
4 root 20 0 0 0 0 S 0 0.0 0:00.00 [ksoftirqd/0]
5 root RT 0 0 0 0 S 0 0.0 0:00.00 [watchdog/0]
6 root 20 0 0 0 0 S 0 0.0 0:00.00 [events/0]
AFTER INSTALLING CHEF
top - 12:07:19 up 15 min, 1 user, load average: 2.02, 1.46, 0.72
Tasks: 88 total, 1 running, 87 sleeping, 0 stopped, 0 zombie
Cpu0 : 8.0%us, 0.0%sy, 0.0%ni, 92.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu1 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 1781976k total, 921812k used, 860164k free, 34052k buffers
Swap: 917496k total, 0k used, 917496k free, 635652k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ TIME COMMAND
6282 chef 20 0 41504 27m 2408 S 5 1.6 0:18.97 0:18 merb : worker (port 4040)
5536 chef 20 0 35256 21m 3020 S 3 1.2 0:12.20 0:12 merb : worker (port 4000)
5347 root 20 0 32164 20m 2348 S 0 1.2 0:01.87 0:01 merb : merb : master
5184 chef 20 0 408m 46m 11m S 0 2.7 0:01.26 0:01 java -Xmx256M -Xms256M -Dsolr.data.dir=/var/cache/chef/solr/data -Dsolr.solr.home=/var/lib/chef/solr -DSTART=/var/lib/chef/solr/solr-jetty/etc/start.config -j
4535 rabbitmq 20 0 49408 10m 2156 S 0 0.6 0:00.47 0:00 /usr/lib/erlang/erts-5.7.4/bin/beam.smp -W w -K true -A30 – -root /usr/lib/erlang -progname erl – -home /var/lib/rabbitmq – -pa /usr/lib/rabbitmq/lib/rabbi
5528 root 20 0 32228 19m 2372 S 0 1.1 0:00.38 0:00 merb : merb : master
6284 root 20 0 2544 1212 948 R 0 0.1 0:00.37 0:00 top
4196 couchdb 20 0 66296 9.8m 3604 S 0 0.6 0:00.29 0:00 /usr/lib/erlang/erts-5.7.4/bin/beam.smp -Bd -K true – -root /usr/lib/erlang -progname erl – -home /var/lib/couchdb – -noshell -noinput -smp auto -sasl errl
4449 root 20 0 29304 16m 1652 S 0 1.0 0:00.22 0:00 /usr/bin/ruby1.8 /usr/bin/chef-client -L /var/log/chef/client.log -d -c /etc/chef/client.rb -i 1800 -s 20
1 root 20 0 2680 1612 1204 S 0 0.1 0:00.15 0:00 /sbin/init
regards
jan zimmek