cgroup v2 OOM events troubleshooting
oom_kill/max counters per cgroup; pod hitting memory.max before node-wide OOM
cat /sys/fs/cgroup/<name>/memory.events | grep -E 'oom|max'
more troubleshooting
all 32 commands →
Deleted files holding disk
lsof +L1 | sort -k7 -rn | head
Disk I/O latency saturation
iostat -x 1 | awk '$1!~/^$/{print $1, "util="$NF, "await="$(NF-2)}'
Per-process block I/O top
biotop-bpfcc -C 5 1
Conntrack table full check
conntrack -L 2>/dev/null | wc -l; conntrack -S
Conntrack live events
conntrack -E -p tcp --dport 443 -o timestamp