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shell腳本在日常運維工作中，起到相當大的作用，對於自動化運維來說省工省力。
以下是本人工作中積累的shell腳本大全，如下：
apache、mysql、nginx腳本系列
1、mysql系列
1.1、判斷mysql運行狀態
#!/bin/bash
#author:andychen
MYSQL=/etc/init.d/mysqld
LogPath=/tmp/mysql.log
portNum=`netstat -ntpl | grep 3306 | wc -l`
mysqlProcessNum=`ps -ef | grep mysqld |grep -v grep |wc -l`
if [ $portNum -eq 1 ] && [ $mysqlProcessNum -eq 2 ];then
echo "mysql is running"
else
$MYSQL restart >>$LogPath
sleep 10
portNum=`netstat -ntpl | grep 3306 | wc -l`
mysqlProcessNum=`ps -ef | grep mysqld |grep -v grep |wc -l`
if [ $portNum -ne 1 ] && [ $mysqlProcessNum -ne 2 ];then
while true
do
killall mysqld >dev/null 2>&1
[ $? -ne 0 ] && break
sleep 1
done
$MYSQL restart >>$LogPath && status="successfully" || status="failure"
mail -s "mysql startup status is $status" [email protected]
fi
fi
1.2、mysql啟動腳本
cat mysqld.sh
#!/bin/bash
# mysql啟動腳本
. /etc/init.d/functions
path="/etc/init.d/mysqld"
function usage(){
echo "$0 {start|stop|restart}"
exit 1
}
[ $# -ne 1 ] && usage
function_mysql_start(){
$path start &>/dev/null
if [ $? -eq 0 ]
then
sleep 5
action "start mysql" /bin/true
else
action "start mysql" /bin/false
fi
}
function_mysql_stop(){
$path stop &>/dev/null
if [ $? -eq 0 ]
then
action "stop mysql" /bin/true
else
action "stop mysql" /bin/false
fi
}
function_mysql_restart(){
function_mysql_stop
sleep 3
function_mysql_start
}
case $1 in
start)
function_mysql_start
;;
stop)
function_mysql_stop
;;
restart)
function_mysql_restart
;;
*)
printf "Usage:$0 {start|stop|restart}\\n"
esac
2、apache系列
2.1、通過偵聽端口、進程、遠程判斷是否正常
例一：
cat judge_http_port.sh
#!/bin/bash
#通過偵聽httpd端口來判斷
port=`netstat -ntpl | grep 80|awk -F '[: ]+' '{print $4}'`
if [ "$port" == "80" ];then
echo "httpd is running."
else
echo "httpd is not running."
/etc/init.d/httpd start
fi
例二：
cat judge_http_port2.sh
#!/bin/bash
#通過偵聽httpd端口個數來判斷
HttpPortNum=`netstat -ntpl | grep 80|wc -l`
if [ $HttpPortNum -eq 1 ];then
echo "httpd is running."
else
echo "httpd is not running."
/etc/init.d/httpd start
fi
例三：
cat judge_http_port3.sh
#!/bin/bash
#通過遠程端口來判斷
HttpPortNum=`nmap 192.168.0.13 -p 80 | grep open|wc -l`
if [ $HttpPortNum -eq 1 ];then
echo "httpd is running."
else
echo "httpd is not running."
/etc/init.d/httpd start
fi
2.2、Apache啟動腳本
cat httpd.sh
#!/bin/bash
httpd="/usr/sbin/apachectl"
# Source function library. #加載函數庫
. /etc/init.d/functions
case "$1" in
start)
$httpd start >& /dev/null
[ $? -eq 0 ] && action "httpd is started" /bin/true||\\
action "httpd is started" /bin/false
;;
stop)
$httpd stop >& /dev/null
[ $? -eq 0 ] && action "httpd is stopped" /bin/true||\\
action "httpd is stopped" /bin/false
;;
restart)
$httpd restart >& /dev/null
[ $? -eq 0 ] && action "httpd is restarted" /bin/true||\\
action "httpd is restarted" /bin/false
;;
*)
echo "Useage:$0 {start|stop|restart}"
exit
;;
esac
3、nginx系列
判斷nginx運行狀態
例一：
cat judge_http_port.sh
#!/bin/bash
HttpPortNum=`nmap 192.168.0.13 -p 80 | grep open|wc -l`
if [ $HttpPortNum -eq 1 ];then
echo "nginx is running."
else
echo "nginx is not running."
/etc/init.d/nginx start
fi
例二：
cat judge_http_port2.sh
#!/bin/bash
#wget -T 10 -q --spider http://192.168.0.13 >&/dev/null
curl -s http://192.168.0.13 >&/dev/null
if [ $? -eq 0 ];then
echo "nginx is running."
else
echo "nginx is not running."
/etc/init.d/nginx start
fi
例三：
cat judge_http_port3.sh
#!/bin/bash
httpCode=`curl -I -s http://192.168.0.13 | head -1 | awk '{print $2}'`
if [ "$httpCode" == "200" ];then
echo "nginx is running."
else
echo "nginx is not running."
/etc/init.d/nginx start
fi
例四：
cat judge_http_port4.sh
#!/bin/bash
[ -f /etc/init.d/functions ] && . /etc/init.d/functions||exit 1
httpCode=`curl -I -s http://192.168.0.13 | head -1 | awk '{print $2}'`
if [ "$httpCode" == "200" ];then
action "nginx is running." /bin/true
else
action "nginx is not running." /bin/false
/etc/init.d/nginx start && \\
action "nginx is started." /bin/true
fi
例五：
cat judge_http_port5.sh
#!/bin/bash
if [ $# -ne 2 ];then
echo "Usage:$0 ip port"
exit
fi
HttpPortNum=`nmap $1 -p $2|grep open|wc -l`
if [ $HttpPortNum -eq 1 ];then
echo "$1 $2 is open."
else
echo "$1 $2 is closed."
fi
測試：
sh judge_http_port.sh baidu.com 80
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