Common Linux Monitoring script code

To provide you with five of commonly used Linux monitoring scripts (see Host network card traffic, system monitoring, monitoring the disk space of the host, when the use of more than 90% of the space through the mail to send a warning, monitoring CPU and memory usage, a full range of monitoring host), the need to see a friend Oh!

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

Jbxue123@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

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}

Fi

# General Check

Export Term=linux

/usr/bin/top-b-D ${delay}-n ${count} > ${dir}/top_${dat}.log 2>&1 &

# CPU Check

/usr/bin/sar-u ${delay} ${count} > ${dir}/cpu_${dat}.log 2>&1 &

#/usr/bin/mpstat-p 0 ${delay} ${count} > ${dir}/cpu_0_${dat}.log 2>&1 &

#/usr/bin/mpstat-p 1 ${delay} ${count} > ${dir}/cpu_1_${dat}.log 2>&1 &

# memory Check

/usr/bin/vmstat ${delay} ${count} > ${dir}/vmstat_${dat}.log 2>&1 &

# I/o check

/usr/bin/iostat ${delay} ${count} > ${dir}/iostat_${dat}.log 2>&1 &

# Network Check

/usr/bin/sar-n DEV ${delay} ${count} > ${dir}/net_${dat}.log 2>&1 &

#/usr/bin/sar-n Edev ${delay} ${count} > ${dir}/net_edev_${dat}.log 2>&1 &

Put it in the crontab. Automatic execution per hour:

0 * * * */home/check_xu.sh

This will generate hourly CPU, memory, network, IO statistics in the/HOME/OSLOG/HOST_YYYYMMDD/HH directory.

If a time period problem arises, you can look at the corresponding log information, to see how the host performance.