如何在CentOS上安装Cacti监控工具？-HCRM博客

CentOS 安装 Cacti

Cacti 是一款基于 PHP/MySQL 的开源网络监控和图形化工具，它使用 RRDTool 来存储所有必要的数据并绘制图形，Cacti 主要通过 SNMP 协议获取数据，适用于监控网络设备、服务器等，下面将详细介绍在 CentOS 系统上安装 Cacti 的过程。

（图片来源网络，侵权删除）

一、前期准备

1. 更新系统包

yum update y

2. 安装基本依赖软件

yum install wget ntpdate y

3. 确保时间同步

systemctl start ntpdate
systemctl enable ntpdate
ntpdate ntp1.aliyun.com
echo "59 23 * * *    ntpdate ntp1.aliyun.com" > /var/spool/cron/root

4. 禁用 SELinux

setenforce 0
sed i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config

二、安装 LAMP 环境

1. 安装 EPEL Repo

yum install epelrelease y

2. 安装 Apache HTTP Server

（图片来源网络，侵权删除）

yum install httpd y
systemctl start httpd
systemctl enable httpd

3. 安装 MariaDB

yum install mariadbserver mariadb y
systemctl start mariadb
systemctl enable mariadb
mysql_secure_installation

4. 安装 PHP 及相关扩展

yum install php phpmysqlnd phpmbstring phpldap phpxml phpgd phpsnmp phppeclzip phpxml y
sed i 's/;date.timezone =/date.timezone = Asia\/Shanghai/g' /etc/php.ini
sed i 's/memory_limit = 128M/memory_limit = 512M/g' /etc/php.ini
sed i 's/max_execution_time = 30/max_execution_time = 60/g' /etc/php.ini

5. 安装 NetSNMP 和 RRDTool

yum install netsnmp netsnmputils rrdtool y

三、下载并配置 Cacti

1. 下载 Cacti

cd /tmp
wget https://www.cacti.net/downloads/cactilatest.tar.gz
tar zxvf cactilatest.tar.gz
mv cacti*/* /var/www/html/cacti/
chown R apache:apache /var/www/html/cacti

2. 创建数据库及用户

mysql u root p
CREATE DATABASE cacti;
GRANT ALL ON cacti.* TO 'cactiuser'@'localhost' IDENTIFIED BY 'password';
FLUSH PRIVILEGES;
EXIT;

3. 导入 Cacti SQL 文件

cd /var/www/html/cacti/
mysql u cactiuser p cacti < cacti.sql

4. 修改配置文件

vim /var/www/html/cacti/include/config.php
修改以下内容以匹配你的数据库设置：
$database_type     = 'mysql';
$database_default  = 'cacti';
$database_hostname = 'localhost';
$database_username = 'cactiuser';
$database_password = 'password';
$database_port     = '3306';
$database_socket   = '';
$database_tz       = 'UTC';

四、配置自动发现（可选）

1. 定义 SNMP 选项

vim /var/www/html/cacti/include/snmp_options.php

添加如下内容：

$snmp_options['version'] = '2c'; // or '3' for SNMPv3
$snmp_options['community'] = 'public'; // replace with your community string if using v2c
$snmp_options['seclevel'] = 'authPriv'; // for SNMPv3 only, adjust accordingly
$snmp_options['authpass'] = 'yourAuthPassword'; // for SNMPv3 only, adjust accordingly
$snmp_options['privpass'] = 'yourPrivPassword'; // for SNMPv3 only, adjust accordingly
$snmp_options['timeout'] = '1'; // seconds before timing out the connection attempt
$snmp_options['retries'] = '3'; // number of retry attempts on timeouts
$snmp_options['port'] = '161'; // default port to use for SNMP queries

2. 定义扫描网段

vim /var/www/html/cacti/include/poller_options.php

添加如下内容：

$poller_options['scanning'] = array(
    'enabled' => true, // set to false to disable auto discovery
    'interval' => 3600, // interval in seconds between each scan (e.g., 3600 seconds)
);
$poller_options['discovery'] = array(
    'enabled' => true, // set to false to disable auto discovery
    'interval' => 3600, // interval in seconds between each discovery (e.g., 3600 seconds)
);

3. 定义规则（可选）

vim /var/www/html/cacti/include/graph_templates.php

添加或修改规则以适应你的需求。

五、安装 Spine（可选）

为了提高性能，可以安装 Spine，这是一个用 C 语言编写的数据采集器。

1. 安装依赖包

yum install gcc libtool make autoconf automake openssldevel y

2. 下载并编译 Spine

cd /tmp
wget https://github.com/Cacti/cactispinnector/archive/master.zip O spine.zip
unzip spine.zip
cd cactispinnectormaster
./bootstrap.sh
./configure withreentrant prefix=/usr/local/spine enablemysql withmysqllib=/usr/lib64/mysql
make && make install
chown root:root /usr/local/spine/bin/spine
chmod +s /usr/local/spine/bin/spine

3. 配置 Spine（可选）

cp /var/www/html/cacti/service/cactid.service /etc/systemd/system/cactid.service
systemctl enable cactid
systemctl start cactid
systemctl status cactid