LINUX-monitor server status and linux Monitoring Server

LINUX-monitor server status and linux Monitoring Server

This document describes how to monitor the operating status of linux servers, including CPU, hard disk, memory, network interfaces, and motherboard.

How to monitor Hard Disks

• Core Ideology
  Use command df.
• Sample program

#! /Bin/bashIP = 'hostname-I 'hostname = 'hostname' disk _ sda2 = 'df-Ph | grep/dev/sda2 | awk' {print $5} '| cut -f 1-d "%" 'mailtitle = "server hard disk alert "; if ($ disk_sda2> 90) then MailContent = "Hi: <br> the SDA2 usage of the server $ HostName ($ IP) Hard Disk Partition has exceeded $ disk_sda2 %. Please handle it in time. "; Php sendEmail. php $ MailTitle $ MailContentfi

How to monitor memory

• Core Ideology
  Use command free. Then, use the ps command to output the process occupying the first 10 of the memory.
  Note that the actual memory usage is 18880/64420 MB, and the memory allocation rate is 29298/64420 MB.
  
• Sample program

#! /Bin/bashIP = 'hostname-I 'hostname = 'hostname' MAX _ mem = 70MAX_swap = 70 total = 'free-m | grep Mem | awk' {print $2 }' 'memory = 'free-m | grep Mem | awk' {print $3} ''locatedmen = 'free | awk'/Mem/{print int ($3/$2*(100 )} ''mem = 'free-m | awk'/-/{print $3} ''usedtotal = 'awk' BEGIN {printf int ('$ Mem'/'$ total ') * 100)} ''usedswap = 'free | awk'/Swap/{print $3} ''if [$ UsedSwap-gt 0]; then SWAP = 'free | awk'/Swap/{print Int ($3/$2*100)} ''else SWAP = 0 fiMailTitle = "server memory alarm "; if [$ Usedtotal-gt $ MAX_mem-o $ SWAP-gt $ MAX_swap]; then 'ps auxw | head-1; ps auxw | sort-rn-k4 | head-10> memory.txt 'mailcontent = "Hi: <br> & nbsp server $ HostName ($ IP) memory usage, please pay attention to it in time. <Br> & nbsp & nbspmemory usage has exceeded $ Usedtotal %, and swap usage has exceeded $ SWAP %. <Br> & nbsp & nbspmem (buffer + cache) system allocation $ memory & nbspMB ($ LocatedMen %), actual use of $ Mem & nbspMB ($ Usedtotal %) <br> &nbsp memory usage top10input see the attached memory.txt. "; Php sendEmail. php $ MailTitle $ MailContentfi

How to monitor CPU

To be continued.

How to monitor network interfaces

To be continued.

How to monitor the motherboard

To be continued.

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