cacti+nagios 整合企业级监控平台（一）

一、基础环境配置

• 系统 centos 6.5 x64
• lnmp 配置参考 使用一键安装即可
• yum安装
  yum install gcc rrdtool net-snmp-devel net-snmp net-snmp-utils net-snmp-devel

二、配置snmp

• 配置文件(/etc/snmp/snmpd.conf)

syslocation CN  
syscontact no  
com2sec notConfigUser  localhost       public  
com2sec notConfigUser  127.0.0.1       public  
extend .1.3.6.1.4.1.2312.100 tcpCurrStat /etc/snmp/get_tcp_state  
group   notConfigGroup v1           notConfigUser  
group   notConfigGroup v2c           notConfigUser  
view    systemview    included   .1.3.6.1.2.1.1  
view    systemview    included   .1.3.6.1.2.1.25.1.1  
access  notConfigGroup ""      any       noauth    exact  all none none  
view all    included  .1                               80  
pass .1.3.6.1.4.1.4413.4.1 /usr/bin/ucd5820stat  
proc mountd  
proc ntalkd 4  
proc sendmail 10 1  
exec echotest /bin/echo hello world  
disk / 10000  
load 12 14 14  
view all included .1 80  
view mib2 included .iso.org.dod.internet.mgmt.mib-2 fc  

• 监控tcp连接状态脚本(/etc/snmp/gettcpstate)

#!/bin/sh
tmp="/dev/shm/.tcpstat-tmp"  
netstat -ant|awk '/^tcp/ {print $6}' > $tmp  
for state in 'ESTABLISHED' 'CLOSE_WAIT' 'TIME_WAIT' 'SYN_SENT' 'SYN_RCVD' 'LAST_ACK' 'FIN_WAIT2' 'FIN_WAIT1'  
do  
        echo "$(cat $tmp|grep $state|wc -l)"
done  

• 启动snmp并设置开机自启动
  chkconfig snmpd on & service snmpd start

• 查看是否启动并测试
  netstat -an |grep 161 snmpwalk -v 2c -c public localhost system 查看系统信息

三、安装配置cacti

• 下载最新版本(http://www.cacti.net/downloads/)

• 安装cacti主程序
  tar xzf cacti-0.8.8d.tar.gz && mv cacti-0.8.8d /data/www/cacti/

• 创建cacti数据库并导入SQL

mysql -uroot –p               #输入你的密码进入数据库  
create database cacti;        #创建数据库  
grant all on cacti.* to cacti@'localhost' identified by "123456";        #创建用户并授权  
flush privileges;             #刷新权限  
exit  
mysql -uroot –p cacti < /data/www/cacti/cacti.sql       #导入数据库  

• 修改cacti/目录权限
  chown www.www -R /data/www/cacti

• 修改Cacti配置文件config.php

vim /data/www/cacti/include/config.php  
$database_type = "mysql";
$database_default = "cacti";
$database_hostname = "localhost";
$database_username = "cacti";
$database_password = "123456";
$database_port = "3306";
$database_ssl = false;

• 添加rrdtool计划任务
  crontab -e -u www
*/5 * * * * /usr/bin/php /var/www/html/cacti/poller.php > /dev/null 2>&1

• nginx 配置虚拟主机 (/usr/local/nginx/conf/vhosts/cacti.imdst.com)

server  
{
    listen       80;
    server_name  cacti.imdst.com;
    index index.php index.htm index.html;
    root  /data/www/cacti;
    location ~ .*\.(php|php5)?$
    {
     #  fastcgi_pass  127.0.0.1:9000;                # 注意检查自己配置的fpm模式
        fastcgi_pass unix:/var/run/php5-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param  SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param  QUERY_STRING     $query_string;
        include fcgi.conf;
    }
    location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$
    {
        expires      15d;
    }
    location ~ .*\.(js|css)?$
    {
        expires      1d;
    }
}

• 重启nginx,初始化安装cacti
  service nginx reload or /usr/local/nginx/sbin/nginx -s reload
http://cacti.imdst.com/install/
  
  • 点Next进入下一步
    
  • 再Next下一步
    
  • 全部为绿色无异常再进入下一步
    
• 结束后登陆
  
  • 初始密码为 admin admin
    
  • 第一次登陆要修改密码
    

• 到此为止cacti安装完成，默认添加了本机的监控，查看Graphs页是否生成图形

• cacti插件安装配置见第二篇