Linux 分析操作系统负载

 
 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 "\<nameserver[ ]+"|awk '{print $NF}') 

  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 

Linux 分析操作系统负载

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