Linux常用系统监控命令

ps

查看系统进程状态(用户，进程id，cpu/内存占用率)
ps -u

[root@localhost ~]# ps -u
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1865 0.3 1.7 337472 30980 tty1 Ssl+ 16:16 0:06 /usr/bin/X :0 -backgr
root 3321 0.0 0.1 116480 3012 pts/0 Ss 16:19 0:00 bash
root 4129 0.0 0.1 155360 1896 pts/0 R+ 16:55 0:00 ps -u

uptime

查看系统负载状态(运行时间，用户数，1，5，15分钟平均负载值）
uptime

[root@localhost ~]# uptime
 17:00:43 up 44 min,  2 users,  load average: 0.00, 0.01, 0.05

ifconfig 查看网卡配置，网络状态等信息

ifconfig

[root@localhost ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.72.136  netmask 255.255.255.0  broadcast 192.168.72.255
        inet6 fe80::2f6b:6ef7:bc0e:6b5f  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:76:64:d3  txqueuelen 1000  (Ethernet)
        RX packets 901  bytes 70843 (69.1 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 335  bytes 35046 (34.2 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 19  base 0x2000  

free [-h] 查看内存使用量

free -h

019 x86_64 x86_64 x86_64 GNU/Linux
[root@localhost ~]# free -h
              total        used        free      shared  buff/cache   available
Mem:           1.7G        791M        347M         13M        615M        735M
Swap:          2.0G          0B        2.0G

uname

查看系统内核版本
uname -a

[root@localhost ~]# uname -a
Linux localhost.localdomain 3.10.0-957.27.2.el7.x86_64 #1 SMP Mon Jul 29 17:46:05 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux