LinuxSEE

Linux下服务器性能监控脚本

最近因为工作需要，写了一个监控系统性能的脚本，包括对CPU、内存、网卡流量、某进程消耗系统资源的监控，由于诸多服务器的硬盘分区不同，没做具体监控。

这个脚本的原理是通过sar命令记录各种数值，然后利用cron每10分钟跑一次并记录到数据库，后期可根据具体业务需求再把相关数据取出并判断，最后发送邮件给某人，以下是脚本具体内容:

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#!/bin/bash
#
#*@ Env      CentOS5.4-64位中文版+sysstat-7.0.2-3.el5_5.1
#*@ Date         2011.6.27
#*@ Author       雨尚
#*@ Site     www.linuxsee.com
#*@ Email        ydjjing@163.com
#*@ Function     服务器性能监控脚本
#
mysql=”/opt/mysql/bin/mysql -uroot -p”000000″ opdb -hlocalhost -N”
hostname=`hostname`
ip=`/sbin/ifconfig eth0 |grep “inet addr”| cut -f 2 -d “:”|cut -f 1 -d ” “`
ip1=`/sbin/ifconfig eth1 |grep “inet addr”| cut -f 2 -d “:”|cut -f 1 -d ” “`
####COLLECT_CPU####
CPU=`/usr/bin/sar -u 0 | head -4 | tail -1 |awk -F’ ‘ ‘{printf $2}’`
user=`/usr/bin/sar -u 0 | head -4 | tail -1 |awk -F’ ‘ ‘{printf $3}’`
nice=`/usr/bin/sar -u 0 | head -4 | tail -1 |awk -F’ ‘ ‘{printf $4}’`
system=`/usr/bin/sar -u 0 | head -4 | tail -1 |awk -F’ ‘ ‘{printf $5}’`
iowait=`/usr/bin/sar -u 0 | head -4 | tail -1 |awk -F’ ‘ ‘{printf $6}’`
steal=`/usr/bin/sar -u 0 | head -4 | tail -1 |awk -F’ ‘ ‘{printf $7}’`
idle=`/usr/bin/sar -u 0 | head -4 | tail -1 |awk -F’ ‘ ‘{printf $8}’`
echo “insert into cpu (id,CPU,user,nice,system,iowait,steal,idle,hostname,ip,collect_time) values (”,’$CPU’,'$user’,'$nice’,'$system’,'$iowait’,'$steal’,'$idle’,'$hostname’,'$ip’, now());” | ${MYSQL}
####COLLECT_MEM####
kbmemfree=`/usr/bin/sar -r 0| head -4 | tail -1 |awk -F’ ‘ ‘{printf $2}’`
kbmemused=`/usr/bin/sar -r 0| head -4 | tail -1 |awk -F’ ‘ ‘{printf $3}’`
memused=`/usr/bin/sar -r 0| head -4 | tail -1 |awk -F’ ‘ ‘{printf $4}’`
kbbuffers=`/usr/bin/sar -r 0| head -4 | tail -1 |awk -F’ ‘ ‘{printf $5}’`
kbcached=`/usr/bin/sar -r 0| head -4 | tail -1 |awk -F’ ‘ ‘{printf $6}’`
kbswpfree=`/usr/bin/sar -r 0| head -4 | tail -1 |awk -F’ ‘ ‘{printf $7}’`
kbswpused=`/usr/bin/sar -r 0| head -4 | tail -1 |awk -F’ ‘ ‘{printf $8}’`
swpused=`/usr/bin/sar -r 0| head -4 | tail -1 |awk -F’ ‘ ‘{printf $9}’`
kbswpcad=`/usr/bin/sar -r 0| head -4 | tail -1 |awk -F’ ‘ ‘{printf $10}’`
echo “insert into memory (id,kbmemfree,kbmemused,memused,kbbuffers,kbcached,kbswpfree,kbswpused,swpused,kbswpcad,hostname,ip,collect_time) values (”,’$kbmemfree’,'$kbmemused’,'$memused’,'$kbbuffers’,'$kbcached’,'$kbswpfree’,'$kbswpused’,'$swpused’,'$kbswpcad’,'$hostname’,'$ip’, now());” | ${MYSQL}
####COLLECT_INTERFACE####
IFACE0=`/usr/bin/sar -n DEV 0|head -5|tail -1|awk -F’ ‘ ‘{printf $2}’`
rxpck0=`/usr/bin/sar -n DEV 0|head -5|tail -1|awk -F’ ‘ ‘{printf $3}’`
txpck0=`/usr/bin/sar -n DEV 0|head -5|tail -1|awk -F’ ‘ ‘{printf $4}’`
rxbyt0=`/usr/bin/sar -n DEV 0|head -5|tail -1|awk -F’ ‘ ‘{printf $5}’`
txbyt0=`/usr/bin/sar -n DEV 0|head -5|tail -1|awk -F’ ‘ ‘{printf $6}’`
rxcmp0=`/usr/bin/sar -n DEV 0|head -5|tail -1|awk -F’ ‘ ‘{printf $7}’`
txcmp0=`/usr/bin/sar -n DEV 0|head -5|tail -1|awk -F’ ‘ ‘{printf $8}’`
rxmcst0=`/usr/bin/sar -n DEV 0|head -5|tail -1|awk -F’ ‘ ‘{printf $9}’`

IFACE1=`/usr/bin/sar -n DEV 0|head -6|tail -1|awk -F’ ‘ ‘{printf $2}’`
rxpck1=`/usr/bin/sar -n DEV 0|head -6|tail -1|awk -F’ ‘ ‘{printf $3}’`
txpck1=`/usr/bin/sar -n DEV 0|head -6|tail -1|awk -F’ ‘ ‘{printf $4}’`
rxbyt1=`/usr/bin/sar -n DEV 0|head -6|tail -1|awk -F’ ‘ ‘{printf $5}’`
txbyt1=`/usr/bin/sar -n DEV 0|head -6|tail -1|awk -F’ ‘ ‘{printf $6}’`
rxcmp1=`/usr/bin/sar -n DEV 0|head -6|tail -1|awk -F’ ‘ ‘{printf $7}’`
txcmp1=`/usr/bin/sar -n DEV 0|head -6|tail -1|awk -F’ ‘ ‘{printf $8}’`
rxmcst1=`/usr/bin/sar -n DEV 0|head -6|tail -1|awk -F’ ‘ ‘{printf $9}’`
echo “insert into interface (id,IFACE,rxpck,txpck,rxbyt,txbyt,rxcmp,txcmp,rxmcst,hostname,ip,collect_time) values (”,’$IFACE0′,’$rxpck0′,’$txpck0′,’$rxbyt0′,’$txbyt0′,’$rxcmp0′,’$txcmp0′,’$rxmcst0′,’$hostname’,'$ip’, now());” | ${MYSQL}

echo “insert into interface (id,IFACE,rxpck,txpck,rxbyt,txbyt,rxcmp,txcmp,rxmcst,hostname,ip,collect_time) values (”,’$IFACE1′,’$rxpck1′,’$txpck1′,’$rxbyt1′,’$txbyt1′,’$rxcmp1′,’$txcmp1′,’$rxmcst1′,’$hostname’,'$ip1′, now());” | ${MYSQL}
####COLEECT_PROCESS#####
collect_process(){
 PRO_PID=`ps -ef |grep $1|head -1|awk -F’ ‘ ‘{printf $2}’`
 pname=`echo “$1″`
 minflt_pro=`/usr/bin/sar -x $PRO_PID 0 |tail -1|awk -F’ ‘ ‘{printf $3}’`
 majflt_pro=`/usr/bin/sar -x $PRO_PID 0 |tail -1|awk -F’ ‘ ‘{printf $4}’`
 user_pro=`/usr/bin/sar -x $PRO_PID 0 |tail -1|awk -F’ ‘ ‘{printf $5}’`
 system_pro=`/usr/bin/sar -x $PRO_PID 0 |tail -1|awk -F’ ‘ ‘{printf $6}’`
 nswap_pro=`/usr/bin/sar -x $PRO_PID 0 |tail -1|awk -F’ ‘ ‘{printf $7}’`
 CPU_pro=`/usr/bin/sar -x $PRO_PID 0 |tail -1|awk -F’ ‘ ‘{printf $8}’`
 
 echo “insert into process (id,pname,minflt,majflt,user,system,nswap,CPU,hostname,ip,collect_time) values (”,’$pname’,'$minflt_pro’,'$majflt_pro’,'$user_pro’,'$system_pro’,'$nswap_pro’,'$CPU_pro’,'$hostname’,'$ip’, now());” | ${MYSQL}
}
collect_process mysqld_safe

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简单的Linux系统初始化脚本

最近因为工作需要，搞了个简单的Linux系统初始化脚本，转自linuxtone.org，做了相关修改……

#!/bin/sh

cat << EOF
+————————————————————–+
|         === Welcome to Centos System init ===                |
+————–http://www.linuxsee.com————————-+
+——————-Author:雨尚——————–+
EOF

#disable ipv6
cat << EOF
+————————————————————–+
|         === Welcome to Disable IPV6 ===                      |
+————————————————————–+
EOF
echo “alias net-pf-10 off” >> /etc/modprobe.conf
echo “alias ipv6 off” >> /etc/modprobe.conf
/sbin/chkconfig –level 35 ip6tables off
echo “ipv6 is disabled!”
cat << EOF
+————————————————————–+
|         === Welcome to Disable SElinux ===                   |
+————————————————————–+
EOF
#disable selinux
cp /etc/sysconfig/selinux /etc/sysconfig/selinux.bak
sed -i ‘/SELINUX/s/enforcing/disabled/’ /etc/selinux/config
echo “selinux is disabled,you must reboot!”

#vim
cp /root/.bashrc /root/.bashrc.bak
sed -i “8 s/^/alias vi=’vim’/” /root/.bashrc
echo ‘syntax on’ > /root/.vimrc

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