工具记录

在线工具记录

linux 找出占用 swap 前 N 的程序 PID 和占用内存：

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> for i in $( cd /proc;ls |grep "^[0-9]"|awk ' $0 >100') ;do awk '/Swap:/{a=a+$2}END{print '"$i"',a/1024"M"}' /proc/$i/smaps 2>/dev/null ; done | sort -k2nr | head -20

查看虚拟机 jvm

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进程可用最大虚拟内存
ulimit -v

结果:unlimited

最大栈大小
ulimit -s

结果:8192

每个用户可创建最大进程数
ulimit -u

结果: 510226

整体信息查看
ulimit -a

结果：
core file size          (blocks, -c) unlimited
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 514740
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1048576
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 1048576
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

命令学习

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 cat <<EOF > /etc/systemd/system/kube-proxy.service
[Unit]
Description=Kubernetes Kube Proxy
Documentation=https://github.com/kubernetes/kubernetes

[Service]
ExecStart=/usr/local/bin/kube-proxy \\
  --config=/etc/kubernetes/kube-proxy-config.yaml
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target
EOF