Out of Memory (OOM)

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wikipedia:Out of memory

EarlyOOM

OOM in Docker

• Docker: --oom-kill-disable=false To enable or disable OOM Killer for the container.

Use docker inspect CONTANINER_NAME | grep OOM to show options. For example:

docker inspect grafana | grep -i OOM
           "OOMKilled": false,
           "OomScoreAdj": 0,
           "OomKillDisable": false,

Kubernetes

• Pod The node had condition: [MemoryPressure].
• kubectl describe nodes | grep MemoryPressure

OOM Linux kernel logs

Jan 26 04:40:29 SERVER_NAME kernel: runc:[2:INIT] invoked oom-killer: gfp_mask=0x14000c0(GFP_KERNEL), nodemask=(null), order=0, oom_score_adj=0

Jan 26 04:40:29 SERVER_NAME kernel: oom_reaper: reaped process 22572 (java), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB

Related terms

• Out of space
• /proc/sys/vm/panic_on_oom
• yarn: Error Command failed with exit code 137

See also

• Memory: memory pages, RAM, virsh Memory Commands, OOM, meminfo, vmstat, NAND, DDR, lsmem, /dev/shm, /proc/meminfo, sar -r, IOMMU, pmem, Memory management, Garbage collector, THP, Linux Huge Page TLB
• OOM, EarlyOOM, OOM Killer, MemoryPressure (K8s), systemd-oomd, OOMKilled, oom-killer, memcpy, sar -r, Exit code: 137, Killed process
• Linux Kernel: namespaces, Cgroups, OOM, proc, Linux Kernel changelog, sysctl, userfaultfd, Grub, ENOSPC, ENOMEM, DKMS, syscall, Transparent huge pages, smatch, sysfs, vm.swappiness, CFS, Runlevel, Jens Axboe, Consistent Network Device Naming, Initial ramdisk (initrd), modprobe, MTD, Linux Kernel vulnerabilities, /sys/kernel/, KernelCare, unix://, Data Plane Development Kit (DPDK)
• ENOMEM