[Starlingx-discuss] [Containers] Minimum memory requirements for containerized environment.
Cordoba Malibran, Erich
erich.cordoba.malibran at intel.com
Fri Feb 1 16:22:56 UTC 2019
Hi,
After two days of having a containerized system up (without running any
edge application, just the steps in the wiki) I started to see some Out
of Memory errors like this:
Out of memory: Kill process 17906 (kube-apiserver) score 1017 or sacrifice child
Killed process 17906 (kube-apiserver) total-vm:460684kB, anon-rss:335088kB, file-rss:0kB, shmem-rss:0kB
I have in my 16 GB in my virtual environment as the wiki says, but I'm
wondering if that should be enough and this behavior could be some kind
of memory leak or the minimum requirement would be a higher memory.
Thanks!
-Erich
Here is some additional information:
controller-0:~$ uptime
16:01:40 up 2 days, 22:30, 2 users, load average: 93.28, 45.36, 36.84
controller-0:~$ free -h
total used free shared buff/cache available
Mem: 17G 12G 206M 62M 4.8G 1.8G
Swap: 0B 0B 0B
controller-0:~$ top
top - 16:00:10 up 2 days, 22:28, 2 users, load average: 12.57, 22.80, 29.58
Tasks: 705 total, 2 running, 703 sleeping, 0 stopped, 0 zombie
%Cpu(s): 30.3 us, 18.3 sy, 0.1 ni, 27.6 id, 16.5 wa, 0.0 hi, 4.8 si, 2.4 st
KiB Mem : 18330568 total, 247252 free, 13073324 used, 5009992 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 1925172 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
18306 root 10 -10 2333224 185064 13216 S 100.3 1.0 4222:53 ovs-vswitchd
71 root 20 0 0 0 0 D 26.8 0.0 18:57.26 kswapd0
7202 root 20 0 1657284 311532 3400 S 19.9 1.7 335:52.58 kubelet
16311 root 20 0 460276 330576 2884 S 12.6 1.8 0:40.81 kube-apiserver
4291 root 20 0 66832 12224 2024 R 12.3 0.1 0:00.37 heat-manage
1116 root 20 0 1362488 151664 1728 S 11.6 0.8 265:32.20 dockerd
3 root 20 0 0 0 0 S 9.9 0.0 12:20.95 ksoftirqd/0
1 root 20 0 542540 354140 1436 S 7.9 1.9 12:23.91 systemd
21081 42424 20 0 626124 122172 1476 S 7.3 0.7 2:28.49 apache2
3795 999 20 0 5168964 258240 0 S 5.3 1.4 17:06.77 mysqld
26085 999 20 0 4965476 153132 0 S 4.6 0.8 54:16.75 beam.smp
16717 root 20 0 47140 13592 0 S 4.0 0.1 0:16.91 calico-felix
673 root 20 0 50868 12528 512 S 3.6 0.1 0:01.02 kube-scheduler
20893 root 20 0 1049800 201616 0 S 3.3 1.1 40:30.02 ceph-osd
10666 root 20 0 10.7g 112996 868 S 3.0 0.6 46:28.91 etcd
14146 root 20 0 45972 11968 0 S 3.0 0.1 10:09.31 kube-proxy
3435 root 20 0 142216 9708 0 S 2.3 0.1 8:28.87 coredns
19481 root 20 0 324232 112556 1404 S 2.3 0.6 13:20.23 nova-conductor
1162 influxdb 20 0 674068 9604 1020 S 2.0 0.1 8:44.77 influxd
1358 root 20 0 3469568 25344 0 S 2.0 0.1 13:21.31 docker-containe
13365 42424 20 0 2642820 104684 0 S 2.0 0.6 91:03.49 cinder-volume
16108 root 20 0 41044 12812 0 S 2.0 0.1 6:22.57 confd
18862 root 20 0 321820 109656 832 S 2.0 0.6 4:51.59 nova-scheduler
22478 root 20 0 248220 84272 608 S 2.0 0.5 82:31.64 neutron-dhcp-ag
402 root 20 0 60372 29536 32 S 1.7 0.2 0:45.64 nginx-ingress-c
12942 42424 20 0 892092 94848 572 S 1.7 0.5 86:12.08 cinder-backup
7367 root 18 -2 480460 9792 2436 S 1.3 0.1 18:51.83 sm
10762 root 20 0 2297792 116944 0 S 1.3 0.6 11:23.95 nova-compute
12122 root 20 0 142216 10148 296 S 1.3 0.1 8:23.28 coredns
15942 root 20 0 388912 61312 2716 S 1.3 0.3 28:51.34 fm-api
19825 root 19 -1 3313564 52676 1432 S 1.3 0.3 0:05.07 beam.smp
20357 sysinv 19 -1 382232 79644 2948 S 1.3 0.4 0:08.44 sysinv-api
313 root 0 -20 0 0 0 S 1.0 0.0 1:03.17 kworker/0:1H
720 dbus 20 0 60452 1696 896 S 1.0 0.0 3:50.63 dbus-daemon
4073 root 20 0 113788 1684 1092 S 1.0 0.0 0:00.03 ceph
4245 root 20 0 11828 776 440 S 1.0 0.0 0:00.03 heat-engine-cle
4991 root 20 0 408012 39660 304 S 1.0 0.2 5:57.15 ceph-mon
9171 root 20 0 0 0 0 S 1.0 0.0 0:01.48 kworker/0:47
12036 42424 20 0 666056 97616 448 S 1.0 0.5 26:53.04 cinder-volume
14554 root 20 0 59324 31316 0 S 1.0 0.2 7:19.50 nginx-ingress-c
18727 wrsroot 20 0 160588 2428 1100 S 1.0 0.0 0:02.46 top
20515 42424 20 0 678900 110492 428 S 1.0 0.6 26:26.14 cinder-api
20571 42424 20 0 627436 94572 312 S 1.0 0.5 26:41.77 glance-api
8 root 20 0 0 0 0 S 0.7 0.0 9:28.58 rcu_preempt
4429 snmpd 19 -1 245388 4620 480 S 0.7 0.0 0:08.51 snmpd
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