Common Linux Monitoring scripts

Recently, some friends of the internet have asked me about the server monitoring problems, ask the common server monitoring in addition to using open source software, such as: Cacti,nagios monitoring can write their own shell script it? According to their own needs to write a shell script more to meet the needs, more fine-grained host monitoring of the comprehensiveness.

Here are a few of my common host monitoring scripts, we can make changes according to their own situation, hoping to give you a little help.

1, view the host network card traffic

#!/bin/bash

#network

#Mike. Xu

While:; Todo

Time= ' Date +%m '-"%d" "%k": "%m"

day= ' Date +%m '-'%d '

Rx_before= ' ifconfig eth0|sed-n "8" P|awk ' {print $} ' |cut-c7-'

Tx_before= ' ifconfig eth0|sed-n "8" P|awk ' {print $} ' |cut-c7-'

Sleep 2

Rx_after= ' ifconfig eth0|sed-n "8" P|awk ' {print $} ' |cut-c7-'

Tx_after= ' ifconfig eth0|sed-n "8" P|awk ' {print $} ' |cut-c7-'

rx_result=$[(Rx_after-rx_before)/256]

tx_result=$[(Tx_after-tx_before)/256]

echo "$time now_in_speed: $rx _result" Kbps now_out_speed: "$tx _result kbps"

Sleep 2

Done

2. System condition Monitoring

#!/bin/sh

#systemstat. Sh

#Mike. Xu

ip=192.168.1.227

Top-n 2| grep "Cpu"./temp/cpu.txt

free-m | grep "Mem"./temp/mem.txt

Df-k | grep "sda1"./temp/drive_sda1.txt

#df-K | grep sda2 "./temp/drive_sda2.txt

Df-k | grep "/mnt/storage_0"./temp/mnt_storage_0.txt

Df-k | grep "/mnt/storage_pic"./temp/mnt_storage_pic.txt

Time= ' Date +%m '. %d "%k": "%m '"

connect= ' Netstat-na | grep "219.238.148.30:80" | Wc-l '

echo "$time $connect"./temp/connect_count.txt

3, monitoring the host's disk space, when the use of more than 90% in space by sending mail to send a warning

#!/bin/bash

#monitor Available disk space

Space= ' DF | Sed-n '/\/$/P ' | Gawk ' {print $} ' | Sed ' s/%//'

If [$SPACE-ge 90]

Then

Fty89@163.com

Fi

4. Monitor CPU and Memory usage

#!/bin/bash

#script to capture system statistics

Outfile=/home/xu/capstats.csv

Date= ' Date +%m/%d/%y '

Time= ' Date +%k:%m:%s '

timeout= ' uptime '

Vmout= ' Vmstat 1 2 '

Users= ' echo $TIMEOUT | Gawk ' {print $} '

Load= ' echo $TIMEOUT | Gawk ' {print $} ' | Sed "s/,//"

Free= ' echo $VMOUT | Sed-n '/[0-9]/p ' | Sed-n ' 2p ' | Gawk ' {print $} '

Idle= ' echo $VMOUT | Sed-n '/[0-9]/p ' | Sed-n ' 2p ' |gawk ' {print $} '

echo "$DATE, $TIME, $USERS, $LOAD, $FREE, $IDLE") $OUTFILE

See more highlights of this column: http://www.bianceng.cnhttp://www.bianceng.cn/OS/Linux/

5, the Omni-directional monitoring host

#!/bin/bash

# check_xu.sh

# 0 * * * * */home/check_xu.sh

dat= "' Date +%y%m%d '"

Hour= "' Date +%h '"

Dir= "/home/oslog/host_${dat}/${hour}"

Delay=60

Count=60

# whether the responsible directory exist

if! Test-d ${dir}

Then

/bin/mkdir-p ${dir}