cacti监内网本机TCP连接状况

秒速五厘米 2022-09-24 00:23 114阅读 0赞

Cacti是由php开发的网页，运行于LA/NMP平台，可利用SNMP获取数据，周期性的执行能够取得数据的命令，将取回的数据保存至rrd文件当中，利用rrdtool绘出图形。  
snmp原理详解  
[http://blog.csdn.net/shanzhizi/article/details/11606767][http_blog.csdn.net_shanzhizi_article_details_11606767]  
[http://www.cnblogs.com/xdp-gacl/p/3978825.html][http_www.cnblogs.com_xdp-gacl_p_3978825.html]  
rrdtool原理详解  
[http://blog.liuts.com/post/215/][http_blog.liuts.com_post_215]  
LAMP环境已经编译搭建  
虚拟主机配置

<VirtualHost *:80>
            DocumentRoot "/web/vhosts/cacti"
            DirectoryIndex index.shtml index.html index.php
            ErrorLog "logs/cacti_error.log"
            CustomLog "logs/cacti_access.log" common
            ProxyRequests Off  ProxyPassMatch^/(.*\.php)$fcgi://127.0.0.1:9000/web/vhosts/cacti/$1 
            <Directory /web/vhosts/cacti >
                Options FollowSymLinks Includes 
                AllowOverride All
                Require all granted
            </Directory>
    </VirtualHost>

安装snmp并配置

# yum -y install rrdtool net-snmp net-snmp-libs net-snmp-utils 
    修改配置文件/etc/snmp/snmpd.conf中的默认community,后启动服务
    eg:   com2sec notConfigUser  127.0.0.1     mypublic
    # chkconfig snmpd on 
    # service snmpd start

安装cacti，解压安装包到虚拟主机的根目录

# mkdir -p /web/vhosts/
    # tar xvf cacti-0.8.8h.tar.gz -C /web/vhosts/
    # ln -sv /web/vhosts/cacti-0.8.8h /web/vhosts/cacti

初始化数据，更新授权

# cd /web/vhosts/cacti
    # mysqladmin create cactidb
    # mysql cactidb < cacti.sql 
    # mysql -e "GRANT ALL ON cactidb.* to cactiuser@localhost IDENTIFIED BY 'cactipasswd'"
    # mysqladmin flush-privileges

创建系统用户cactiuser，修改cacti安装目录下rra和log目录的属主属组

# useradd cactiuser
    # id cactiuser
    uid=501(cactiuser) gid=501(cactiuser) groups=501(cactiuser)
    # chown -R cactiuser:cactiuser rra log

修改Cacti配置文件中的mysql连接参数

# cat include/config.php
    $database_type = "mysql";
    $database_default = "cactidb";
    $database_hostname = "localhost";
    $database_username = "cactiuser";
    $database_password = "cactipasswd";
    $database_port = "3306";
    $database_ssl = false;
    $url_path = "/"; #此处修改了cacti默认访问路径，不需要在访问地址后加/cacti

以cactiuser用户身份添加cacti收集数据的任务计划

# echo '*/5 * * * * /usr/local/php/bin/php /web/vhosts/cacti/poller.php &>/dev/null' > /var/spool/cron/cactiuser
    # echo "date.timezone = Asia/Shanghai" >> /etc/php.ini 修改php时区
    # hwclock -w #同步硬件时间到系统
    # hwclock 
    Mon 25 Jul 2016 06:57:17 PM CST  -0.347178 seconds
    # date
    Mon Jul 25 18:57:20 CST 2016
    # service httpd restart
    # service snmpd restart

在浏览器中输入[http://ip][http_ip]按照提示进行安装  
![这里写图片描述][20160723180150959]  
编辑脚本获取TCP数据

# cd /web/vhosts/cacti/scripts/
    # cat tcpcon.sh 
    #!/bin/bash
    #$1: hostname/ip
    #$2:snmp community
    SNMPNETSTAT=/usr/bin/snmpnetstat
    TF=`mktemp /tmp/$1_tcpcon.XXXXXXX`
    $SNMPNETSTAT -v 2c -c $2 -Can -Cp tcp $1 > $TF
    EST=`grep -i 'established' $TF |wc -l`
    TWAIT=`grep -i 'timewait' $TF |wc -l`
    SYNRECV=`grep -i 'synreceived' $TF |wc -l`
    echo -n "established:$EST"
    echo -n "timewait:$TWAIT"
    echo -n "synreceived:$SYNRECV"

Console -> Data Input Methods -> (Edit)  
定义Data Input Methods，添加SNMP-TCP connections，数据收集方法为脚本，脚本路径为cacti安装目录下的tcpcon.sh，并传递两个参数  
![这里写图片描述][20160723182141531]  
Console -> Data Templates -> (Edit)  
定义数据模板，关联数据输入方法，添加3个数据源  
![这里写图片描述][20160723182738876]  
Console -> Data Sources -> (Edit)定义数据源  
![这里写图片描述][20160723183109546]  
Console -> Graph Templates -> (Edit)定义图像模板  
![这里写图片描述][20160723183851725]

[http_blog.csdn.net_shanzhizi_article_details_11606767]: http://blog.csdn.net/shanzhizi/article/details/11606767
[http_www.cnblogs.com_xdp-gacl_p_3978825.html]: http://www.cnblogs.com/xdp-gacl/p/3978825.html
[http_blog.liuts.com_post_215]: http://blog.liuts.com/post/215/
[http_ip]: http://ip
[20160723180150959]: /images/20220720/00ba38a572f1417384cfd8ab56d1774f.png
[20160723182141531]: /images/20220720/5d34a7b87e614e3f973815aa9bc90362.png
[20160723182738876]: /images/20220720/d8a324a5351c4e89b2a271fff4146443.png
[20160723183109546]: /images/20220720/b160b8b555974a0c8ad67b0eadc74028.png
[20160723183851725]: /images/20220720/5f9e9f3654bf462fb0d14d408c07abe7.png