CentOS 7 Cacti 架設

系統監控相關的程式不少
像是CA、Zabbix、What's Up等

但用過這麼多套後Cacti還是相當容易上手安裝的一套

Cacti需要的相關套件為 MySQL, PHP, RRDTool, net-snmp,Apache.

但mysql不一定要與cacti裝在一起，故將步驟分開說明。
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1.安裝相關套件(root only)
yum install httpd*
yum install php*
yum install net-snmp*

yum install rrdtool*

yum install freetype-devel libpng-devel libart_lgpl-devel 

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2. php 設定

vi /etc/php.ini

原來為

;date.timezone =

改為

[Date]
date.timezone = Asia/Taipei

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3.下載安裝cacti至目錄位置 

yum install cacti

或是自行至網站下載新版(http://www.cacti.net/downloads/)

cd /tmp

wget http://www.cacti.net/downloads/cacti-0.8.tar.gz

tar -xzvf cacti-0.8.tar.gz

cp cacti /var/www/html/

(依不同設定也有可能在 /usr/share/)

若是yum大概都沒甚麼問題

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4.config html

vi /etc/httpd/conf.d/cacti.conf

Alias /cacti /var/www/cacti

<Directory /var/www/cacti>

        DirectoryIndex index.php

        order deny,allow

        Addtype application/x-httpd-php .php

        php_flag magic_quotes_gcp on

        php_flag track_vars on

</Directory>

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5. service httpd restart

service httpd restart

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5.modify cacti/include/config.php

$database_type = "mysql";

$database_default = "cacti";

$database_hostname = "localhost"; //也可填寫ip如"192.168.1.99"

$database_username = "cactiuser";

$database_password = "cactipassword";

$database_port = "3306";

$database_ssl = false;

#

/*

   Edit this to point to the default URL of your Cacti install

   ex: if your cacti install as at http://serverip/cacti/ this

   would be set to /cacti/

*/

//$url_path = "/cacti/"; <======將註解去除

$url_path = "/cacti/";

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6. crontab –e

*/5 * * * *     root   php /var/www/cacti/poller.php &>/dev/null

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7.SNMP設定

修改/etc/snmp/snmpd.conf

#com2sec notConfigUser  default       public

#group   notConfigGroup v1           notConfigUser

#group   notConfigGroup v2c          notConfigUser

新增下列設定

com2sec local     localhost       public

com2sec mynetwork 192.168.3.0/24  public

group   notConfigGroup v1         local

group   notConfigGroup v2c        local

group   notConfigGroup v1        mynetwork

group   notConfigGroup v2c       mynetwork

view all    included  .1         80

view    systemview    included   .1.3.6.1.2.1.2

access  notConfigGroup ""      any       noauth    prefix  all  none none

access  notConfigGroup ""      any       noauth    prefix  all  all all

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至此Cacti http端設定完畢

如果開啟網頁設定應該會顯示無法連結mysql

http://ServerIP/cacti/

接下來則是開始設定mysql端

看安裝於哪裡做決定

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安裝

1.yum install mariadb* 

初始化設定

2.mysql

systemctl start mariadb

 mysql_secure_installation

(該設定的設一設)

3.建立資料庫

mysql -u root -p

create database cacti ;

//GRANT cacti 資料庫權限給Cacti 資料庫使用者，密碼為cacti

//GRANT ALL ON '資料庫'.* TO '帳號'@'IP/hostname' IDENTIFIED BY '密碼';

//@後之IP或是HOSTNAME為限定其主機與IP可連結，留空白則為都開放。

grant all on cacti.* to 'cactiuser'@'localhost' identified by "cactipassword";

flush privileges;

FLUSH privileges;     //刷新

4.將欄位設定匯入mysql

如果都安裝在同一台則

cd /var/www/cacti/

mysql -u root -p -A cacti < cacti.sql

如果不同台則要看root有無開放給其他主機登入(通常不會....)

如果無則需複製檔案至mysql主機上在執行此指令。

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防火牆設定：

http 80

如果需查看SNMP須開啟udp 161 , 162

sudo firewall-cmd --permanent --zone=public --add-port=161/udp

sudo firewall-cmd --permanent --zone=public --add-port=162/udp

sudo firewall-cmd --reload

sudo firewall-cmd --list-all

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SELINUX需設定為permissive

# vim /etc/selinux/config

SELINUX=permissive