dy - Linux備忘録

Linux(CentOSやDebian)関連のメモ

ダウンロードと実行
# wget http://tecmint.com/wp-content/scripts/tecmint_monitor.sh
# chmod 755 tecmint_monitor.sh
# ./tecmint_monitor.sh
下記のようにインストールするとmonitorだけで実行できる
# ./tecmint_monitor.sh -i
# monitor
CentOS7とUbuntu15.04での実行結果
Internet:  Connected
Operating System Type :  GNU/Linux
OS Name : CentOS Linux
cpe:/o:centos:centos:7
OS Version : 7 (Core)
7
7
Architecture :  x86_64
Kernel Release :  3.10.0-229.1.2.el7.x86_64
Hostname :  C701-71
Internal IP :  192.168.137.71
External IP :  XXX.XXX.XXX.XXX
Name Servers :  192.168.137.71 8.8.8.8
Logged In users : 
(unknown) :0           2015-05-11 12:35 (:0)
root     pts/0        2015-05-11 12:36 (192.168.137.1)
Ram Usages : 
              total        used        free      shared  buff/cache   available
Mem:           979M        286M        416M        7.4M        276M        533M
Swap Usages : 
              total        used        free      shared  buff/cache   available
Swap:          2.0G          0B        2.0G
Disk Usages : 
/dev/sdb1                 148G   80G   61G   57% /var/www/centos
/dev/sda1                 497M  205M  293M   42% /boot
Load Average :  average:0.25,0.55,
System Uptime Days/(HH:MM) :  3 min
-------------------------------------------------------------------------------
Internet:  Connected
Operating System Type :  GNU/Linux
OS Name : Ubuntu
OS Version : 15.04 (Vivid Vervet)
Architecture :  x86_64
Kernel Release :  3.19.0-16-generic
Hostname :  U504-51
Internal IP :  192.168.137.51
External IP :  XXX.XXX.XXX.XXX
Name Servers :  DO 8.8.8.8 8.8.4.4
Logged In users : 
daisuke  :0           2015-05-11 12:34 (:0)
daisuke  pts/0        2015-05-11 12:36 (192.168.137.1)
Ram Usages : 
             total       used       free     shared    buffers     cached
Mem:          1.9G       1.0G       915M        12M        35M       396M
Swap Usages : 
             total       used       free     shared    buffers     cached
Swap:         1.0G         0B       1.0G
Disk Usages : 
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1        19G  4.2G   14G  24% /
/dev/sdb1        99G   60M   94G   1% /UserDir
Load Average :  average:0.15,0.17,
System Uptime Days/(HH:MM) :  13 min
スクリプト本体
####################################################################################################
                  #                                        Tecmint_monitor.sh                                        #
                  # Written for Tecmint.com for the post www.tecmint.com/linux-server-health-monitoring-script/      #
                  # If any bug, report us in the link below                                                          #
                  # Free to use/edit/distribute the code below by                                                    #
                  # giving proper credit to Tecmint.com and Author                                                   #
                  #                                                                                                  #
                  ####################################################################################################
#! /bin/bash
# unset any variable which system may be using

# clear the screen
clear

unset tecreset os architecture kernelrelease internalip externalip nameserver loadaverage

while getopts iv name
do
        case $name in
          i)iopt=1;;
          v)vopt=1;;
          *)echo "Invalid arg";;
        esac
done

if [[ ! -z $iopt ]]
then
{
wd=$(pwd)
basename "$(test -L "$0" && readlink "$0" || echo "$0")" > /tmp/scriptname
scriptname=$(echo -e -n $wd/ && cat /tmp/scriptname)
su -c "cp $scriptname /usr/bin/monitor" root && echo "Congratulations! Script Installed, now run monitor Command" || echo "Installation failed"
}
fi

if [[ ! -z $vopt ]]
then
{
echo -e "tecmint_monitor version 0.1\nDesigned by Tecmint.com\nReleased Under Apache 2.0 License"
}
fi

if [[ $# -eq 0 ]]
then
{


# Define Variable tecreset
tecreset=$(tput sgr0)

# Check if connected to Internet or not
ping -c 1 google.com &> /dev/null && echo -e '\E[32m'"Internet: $tecreset Connected" || echo -e '\E[32m'"Internet: $tecreset Disconnected"

# Check OS Type
os=$(uname -o)
echo -e '\E[32m'"Operating System Type :" $tecreset $os

# Check OS Release Version and Name
cat /etc/os-release | grep 'NAME\|VERSION' | grep -v 'VERSION_ID' | grep -v 'PRETTY_NAME' > /tmp/osrelease
echo -n -e '\E[32m'"OS Name :" $tecreset  && cat /tmp/osrelease | grep -v "VERSION" | cut -f2 -d\"
echo -n -e '\E[32m'"OS Version :" $tecreset && cat /tmp/osrelease | grep -v "NAME" | cut -f2 -d\"

# Check Architecture
architecture=$(uname -m)
echo -e '\E[32m'"Architecture :" $tecreset $architecture

# Check Kernel Release
kernelrelease=$(uname -r)
echo -e '\E[32m'"Kernel Release :" $tecreset $kernelrelease

# Check hostname
echo -e '\E[32m'"Hostname :" $tecreset $HOSTNAME

# Check Internal IP
internalip=$(hostname -I)
echo -e '\E[32m'"Internal IP :" $tecreset $internalip

# Check External IP
externalip=$(curl -s ipecho.net/plain;echo)
echo -e '\E[32m'"External IP : $tecreset "$externalip

# Check DNS
nameservers=$(cat /etc/resolv.conf | sed '1 d' | awk '{print $2}')
echo -e '\E[32m'"Name Servers :" $tecreset $nameservers 

# Check Logged In Users
who>/tmp/who
echo -e '\E[32m'"Logged In users :" $tecreset && cat /tmp/who 

# Check RAM and SWAP Usages
free -h | grep -v + > /tmp/ramcache
echo -e '\E[32m'"Ram Usages :" $tecreset
cat /tmp/ramcache | grep -v "Swap"
echo -e '\E[32m'"Swap Usages :" $tecreset
cat /tmp/ramcache | grep -v "Mem"

# Check Disk Usages
df -h| grep 'Filesystem\|/dev/sda*' > /tmp/diskusage
echo -e '\E[32m'"Disk Usages :" $tecreset 
cat /tmp/diskusage

# Check Load Average
loadaverage=$(top -n 1 -b | grep "load average:" | awk '{print $10 $11 $12}')
echo -e '\E[32m'"Load Average :" $tecreset $loadaverage

# Check System Uptime
tecuptime=$(uptime | awk '{print $3,$4}' | cut -f1 -d,)
echo -e '\E[32m'"System Uptime Days/(HH:MM) :" $tecreset $tecuptime

# Unset Variables
unset tecreset os architecture kernelrelease internalip externalip nameserver loadaverage

# Remove Temporary Files
rm /tmp/osrelease /tmp/who /tmp/ramcache /tmp/diskusage
}
fi
shift $(($OPTIND -1))
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Apache デバッグ

CentOS 6.6
Apache(httpd-2.2.15-39.el6.centos.x86_64)

■シングルプロセスモード
# httpd -X

■httpd.conf構文チェック
# httpd -t

■httpd.conf構文チェック(ファイル指定)
# httpd -t -f conf/httpd.conf
# httpd -t -f /etc/httpd/conf/httpd.conf

■debug用のhttpd.confの作成(dumpio有効/ログレベルdebug)
# cd /etc/httpd/conf
# sed -e 's/^#\(.*mod_dumpio.so\)/\1/g' -e 's/^\(LogLevel\).*/\1 debug/g' -e '$s/$/\nDumpIOInput On/' httpd.conf > httpd.conf.debug

■debugモードで起動
# httpd -k start -f conf/httpd.conf.debug
# httpd -k start -f /etc/httpd/conf/httpd.conf.debug

※dumpio有効でPOSTもログ記録
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Linuxでメモリー使用率を表示させるスクリプト
#!/bin/sh
# MemoryUsage %
memorytotal=$(free | awk '/Mem: /{print $2}')
memoryused=$(free | awk '/Mem: /{print $3}')
echo "scale=3; ${memoryused} / ${memorytotal} * 100" | bc | sed 's/00$//g'
実行結果
# ./MemoryUsage.sh
93.5
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