Cacti学习笔记一：基本安装和配置

1.安装依赖包

yum -y install net-snmp-devel mysql mysql-devel openssl-devel libtool

2.安装RRDTool

yum -y install rrdtool

3.安装snmp

yum -y install net-snmp net-snmp-utils

4.安装LAMP

yum -y install httpd mysql-server php php-mysql 
service httpd start
service mysql start

5.安装cacti

下载：
   wget http://www.cacti.net/downloads/cacti-0.8.8h.tar.gz
   tar xf cacti-0.8.8h.tar.gz 
创建账号：
   useradd -m cacti
   passwd cacti
初始化数据库：
   create user 'cacti'@'localhost' identified by 'cacti';
   create database cacti;
   grant all on cacti.* to 'cacti'@'localhost';
   cd cacti-0.8.8h
   mysql -uroot -p cacti < cacti.sql   如果没有密码，直接回车
创建rrd账号
   useradd cactiuser
   mv cacti-0.8.8h /var/www/html/cacti
   cd /var/www/html/cacti
   chown -R cactiuser rra log
    */5 * *  *  * root  /usr/bin/php /var/www/html/cacti/poller.php  > /dev/null  加入/etc/crontab
出现时间安全问题，修改php.ini
        date.timezone = Asia/Shanghai  去掉注释病修改

6.配置cacti

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

7.增加spine，优化的轮询

wget http://www.cacti.net/downloads/spine/cacti-spine-0.8.8a.tar.gz
tar -xvf cacti-spine-0.8.8a.tar.gz
cd cacti-spine-0.8.8a
./configure
make && make install
    
cp  /usr/local/spine/etc/spine.conf.dist  /usr/local/spine/etc/spine.conf
vim /usr/local/spine/etc/spine.conf
   DB_Host         localhost
   DB_Database     cacti
   DB_User         cacti
   B_Pass         cacti
   DB_Port         3306
   DB_PreG         0
测试和数据库是否可以通信

配置cacti使用spine轮询

 查看日志

tail -f /var/www/html/cacti/log/cacti.log

轮询方法由cmd.php改变为spine

常见问题

没有数据：
        查看tail -f /var/www/html/cacti/log/cacti.log是否每隔5分钟出现日志，如果没有检查定时任务
如果crontab不支持，使用脚本
        [root@monitor shell]# cat /root/shell/foreach_cacti.sh 
        #!/bin/bash
        (while true;
        do
            /usr/bin/php /var/www/html/cacti/poller.php > /dev/null;
            sleep 60;
        done) &