Linux 分析操作系统负载

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一 CPU负载概念

 

 

 

二 CPU负载脚本

1 #############################################################

2 # File Name: system_monitor.sh

3 # Author:cakin

4 # mail:[email protected]

5 # Created Time: Sat 12 Aug 2017 10:17:13 AM CST

6 #==============================================

7 #!/bin/bash

8 clear

9 if [[ $# -eq 0 ]]

10 then

11 rest_ternimal=$(tput sgr0)

12

13 #check os type

14 os=$(uname -o)

15 echo -e '\E[32m'"Operating System Type:" $rest_ternimal $os

16 #check os release version and name

17 os_name=$(cat /etc/issue|grep -e "Server")

18 echo -e '\E[32m'"os release version and name:" $rest_ternimal $os_name

19 #check architecture

20 architecture=$(uname -m)

21 echo -e '\E[32m'"architecture:" $rest_ternimal $architecture

22 #check kernel release

23 kernerrelease=$(uname -r)

24 echo -e '\E[32m'"kernel release:" $rest_ternimal $kernerrelease

25 #check hostname $HOSTNAME

26 hostname=$(uname -n)

27 echo -e '\E[32m'"hostname:" $rest_ternimal $hostname

28 #check internal IP

29 internalip=$(hostname -I)

30 echo -e '\E[32m'"internal IP:" $rest_ternimal $internalip

31 #check external IP

32 externalip=$(curl -s http://ipecho.net/plain)

33 echo -e '\E[32m'"external IP:" $rest_ternimal $externalip

34 #check DNS

35 nameservers=$(cat /etc/resolv.conf |grep -E "\

36 echo -e '\E[32m'"DNS:" $rest_ternimal $nameservers

37 #check if connected to Internet or not

38 ping -c 2 imooc.com &>/dev/null && echo "Internet:Connected" || echo "Internet:Disconnected"

39 #check Logged in users

40 who>/tmp/who

41 echo -e '\E[32m' "Logged in users" $rest_ternimal && cat /tmp/who

42 rm -rf /tmp/who

43 ####################################################

44 system_mem_usages=$(awk '/MemTotal/{total=$2}/MemFree/{free=$2}END{print (total-free)/1024}' /proc/meminfo)

45 echo -e '\E[32m'"system memuserages:" $rest_ternimal $system_mem_usages

46 app_mem_usages=$(awk '/MemTotal/{total=$2}/MemFree/{free=$2}/^Cached/{cached=$2}/Buffers/{buffers=$2}END{print (total-free-ca ched-buffers)/1024}' /proc/meminfo)

47 echo -e '\E[32m'"apps memuserage:" $rest_ternimal $app_mem_usages

48 loadaverage=$(top -n 1 -b|grep "load average:"|awk '{print $10 $11 $12}')

49 echo -e '\E[32m'"load averages:" $rest_ternimal $loadaverage

50 fi

 

三 运行结果

 

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