How to fix this issue? My VM100 every morning will be killed by OOM.

[dickson lee]

Oct 01 05:02:42 kng kernel: [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name
Oct 01 05:02:42 kng kernel: [ 1157] 0 1157 5682 844 65536 0 -1000 systemd-udevd
Oct 01 05:02:42 kng kernel: [ 1548] 103 1548 1939 470 57344 0 0 rpcbind
Oct 01 05:02:42 kng kernel: [ 1658] 102 1658 2042 513 57344 0 -900 dbus-daemon
Oct 01 05:02:42 kng kernel: [ 1661] 0 1661 37745 298 61440 0 -1000 lxcfs
Oct 01 05:02:42 kng kernel: [ 1665] 0 1665 1758 392 45056 0 0 ksmtuned
Oct 01 05:02:42 kng kernel: [ 1668] 0 1668 69482 398 81920 0 0 pve-lxc-syscall
Oct 01 05:02:42 kng kernel: [ 1670] 0 1670 55177 708 81920 0 0 rsyslogd
Oct 01 05:02:42 kng kernel: [ 1671] 0 1671 2920 804 61440 0 0 smartd
Oct 01 05:02:42 kng kernel: [ 1672] 0 1672 11639 743 90112 0 0 systemd-logind
Oct 01 05:02:42 kng kernel: [ 1673] 0 1673 582 223 40960 0 -1000 watchdog-mux
Oct 01 05:02:42 kng kernel: [ 1675] 0 1675 59332 704 77824 0 0 zed
Oct 01 05:02:42 kng kernel: [ 1702] 0 1702 1059 221 49152 0 0 qmeventd
Oct 01 05:02:42 kng kernel: [ 1815] 0 1815 2172 599 57344 0 0 lxc-monitord
Oct 01 05:02:42 kng kernel: [ 1868] 0 1868 2885 140 57344 0 0 iscsid
Oct 01 05:02:42 kng kernel: [ 1869] 0 1869 3011 2975 61440 0 -17 iscsid
Oct 01 05:02:42 kng kernel: [ 1872] 0 1872 3303 964 65536 0 -1000 sshd
Oct 01 05:02:42 kng kernel: [ 1873] 0 1873 5875 359 61440 0 0 apcupsd
Oct 01 05:02:42 kng kernel: [ 1917] 0 1917 1467 223 49152 0 0 agetty
Oct 01 05:02:42 kng kernel: [ 1944] 101 1944 4656 610 57344 0 0 chronyd
Oct 01 05:02:42 kng kernel: [ 1950] 101 1950 2574 464 57344 0 0 chronyd
Oct 01 05:02:42 kng kernel: [ 2050] 0 2050 9952 609 73728 0 0 master
Oct 01 05:02:42 kng kernel: [ 2052] 106 2052 10063 639 69632 0 0 qmgr
Oct 01 05:02:42 kng kernel: [ 2056] 0 2056 200121 718 184320 0 0 rrdcached
Oct 01 05:02:42 kng kernel: [ 2064] 0 2064 166572 14747 389120 0 0 pmxcfs
Oct 01 05:02:42 kng kernel: [ 2210] 0 2210 1658 567 49152 0 0 cron
Oct 01 05:02:42 kng kernel: [ 2227] 0 2227 70901 22866 299008 0 0 pve-firewall
Oct 01 05:02:42 kng kernel: [ 2229] 0 2229 68602 23175 327680 0 0 pvestatd
Oct 01 05:02:42 kng kernel: [ 2232] 0 2232 615 227 45056 0 0 bpfilter_umh
Oct 01 05:02:42 kng kernel: [ 2255] 0 2255 89143 31617 405504 0 0 pvedaemon
Oct 01 05:02:42 kng kernel: [ 2265] 0 2265 86185 26275 352256 0 0 pve-ha-crm
Oct 01 05:02:42 kng kernel: [ 2266] 33 2266 89472 32762 438272 0 0 pveproxy
Oct 01 05:02:42 kng kernel: [ 2274] 33 2274 19097 13438 200704 0 0 spiceproxy
Oct 01 05:02:42 kng kernel: [ 2276] 0 2276 86035 26049 372736 0 0 pve-ha-lrm
Oct 01 05:02:42 kng kernel: [ 2391] 0 2391 7949833 7612302 61988864 0 0 kvm
Oct 01 05:02:42 kng kernel: [ 2556] 0 2556 85563 26876 356352 0 0 pvescheduler
Oct 01 05:02:42 kng kernel: [3371437] 0 3371437 91379 32070 421888 0 0 task UPID:kng:0
Oct 01 05:02:42 kng kernel: [3371479] 0 3371479 4298 796 69632 0 0 termproxy
Oct 01 05:02:42 kng kernel: [3371499] 0 3371499 19214 11472 192512 0 0 pveupgrade
Oct 01 05:02:42 kng kernel: [3371505] 0 3371505 17896 5123 180224 0 0 apt-get
Oct 01 05:02:42 kng kernel: [3546568] 33 3546568 92996 33878 434176 0 0 pveproxy worker
Oct 01 05:02:42 kng kernel: [3675617] 0 3675617 1977 1074 53248 0 0 dpkg
Oct 01 05:02:42 kng kernel: [3930432] 0 3930432 91275 32565 421888 0 0 pvedaemon worke
Oct 01 05:02:42 kng kernel: [3993843] 0 3993843 91258 32545 421888 0 0 pvedaemon worke
Oct 01 05:02:42 kng kernel: [ 6403] 0 6403 91218 32297 421888 0 0 pvedaemon worke
Oct 01 05:02:42 kng kernel: [2900578] 33 2900578 19162 12712 180224 0 0 spiceproxy work
Oct 01 05:02:42 kng kernel: [2900587] 0 2900587 20041 316 53248 0 0 pvefw-logger
Oct 01 05:02:42 kng kernel: [2900593] 33 2900593 89572 32442 397312 0 0 pveproxy worker
Oct 01 05:02:42 kng kernel: [2900594] 33 2900594 89572 32428 397312 0 0 pveproxy worker
Oct 01 05:02:42 kng kernel: [2900595] 33 2900595 89572 32400 397312 0 0 pveproxy worker
Oct 01 05:02:42 kng kernel: [ 693224] 106 693224 10016 613 73728 0 0 pickup
Oct 01 05:02:42 kng kernel: [ 938186] 0 938186 8002 1107 73728 0 -250 systemd-journal
Oct 01 05:02:42 kng kernel: [1226807] 0 1226807 1367 202 49152 0 0 sleep
Oct 01 05:02:42 kng kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=qemu.slice,mems_allowed=0,global_oom,task_memcg=/qemu.slice/100.scope,task=kvm,pid=2391,uid=0
Oct 01 05:02:42 kng kernel: Out of memory: Killed process 2391 (kvm) total-vm:31799332kB, anon-rss:30447304kB, file-rss:2032kB, shmem-rss:0kB, UID:0 pgtables:60536kB oom_score_adj:0
Oct 01 05:02:42 kng kernel: oom_reaper: reaped process 2391 (kvm), now anon-rss:0kB, file-rss:36kB, shmem-rss:0kB

 

[esi_y]

Well, unless it has some memory leak issue which you have to solve within that VM, you can only increase RAM or SWAP, try using KSM [1]?

[1] https://pve.proxmox.com/wiki/Kernel_Samepage_Merging_(KSM)