nginx上搭建cacti

Cacti是一套基于PHP,MySQL,SNMP及RRDTool开发的网络流量监测图形分析工具

Cacti和Nagios是现在使用比较多的网络监控软件了，对于这两款监控软件的区别，应该说是侧重点的不同。 Cacti比较着重于直观数据的监控，易于生成图形，用来监控网络流量、cpu使用率、硬盘使用率等可以说很在合适不过。 而Nagios则比较注重于主机和服务的监控，并且有很强大的发送报警信息的功能。 把两者结合起来，既可以使报警机制高效及时，又可以很容易的查看各项数据的情况。上篇已经跟大家介绍了nagios的安装，这篇将跟大家讲下cacti的安装。

一、在LNMP（linux+nginx+mysql+php）上搭建cacti

1.修改selinux

vim /etc/selinux/config

修改为

selinux=disabled

关闭防火墙

service iptables stop

chkconfig iptables off

重启将selinux生效reboot

安装编译工具及库文件

for i in ` rpm -q make apr* autoconf automake curl-devel gcc gcc-c++ zlib-devel openssl openssl-devel pcre-devel gd kernel keyutils patch perl kernel-headers compat* mpfr cpp glibc libgomp libstdc++-devel ppl cloog-ppl keyutils-libs-devel libcom_err-devel
libsepol-devel libselinux-devel krb5-devel zlib-devel libXpm* freetype libjpeg* libpng* php-common php-gd ncurses* libtool* libxml2 libxml2-devel patch |grep 'not installed' | awk '{print $2}' `; do yum -y install $i; done

安装libmcrypt

cd /usr/local/src

tar zxvf libmcrypt-2.5.7.tar.gz

cd libmcrypt-2.5.7

./configure

make && make install

安装cmake

cd /usr/local/src

tar zxvf cmake-2.8.7.tar.gz

cd cmake-2.8.7

./configure

make && make install

安装pcre

cd /usr/local/src

mkdir /usr/local/pcre #创建安装目录

tar zxvf pcre-8.30.tar.gz

cd pcre-8.30

./configure --prefix=/usr/local/pcre

make && make install

安装mysql

groupadd mysql #添加mysql组

useradd -g mysql mysql -s /bin/false #创建mysql加入到mysql组，不允许mysql登录

mkdir -p /data/mysql #创建MySQL数据库存放目录

chown -R mysql:mysql /data/mysql #设置MySQL数据库目录权限

mkdir -p /usr/local/mysql #创建MySQL安装目录

cd /usr/local/src

tar zxvf mysql-5.5.21.tar.gz

cd mysql-5.5.21

cmake . -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DMYSQL_DATADIR=/data/mysql-DSYSCONFDIR=/etc #配置

make

make install

cd /usr/local/mysql

cp ./support-files/my-huge.cnf /etc/my.cnf #拷贝配置文件

vim /etc/my.cnf #在 [mysqld] 部分增加datadir = /data/mysql #添加MySQL数据库路径

./scripts/mysql_install_db --user=mysql #生成mysql系统数据库

cp ./support-files/mysql.server /etc/rc.d/init.d/mysqld #把Mysql加入系统启动

chmod 755 /etc/init.d/mysqld #增加执行权限

chkconfig mysqld on #加入开机启动

vim /etc/rc.d/init.d/mysqld #编辑

basedir = /usr/local/mysql #MySQL程序安装路径

datadir = /data/mysql #MySQl数据库存放目录

service mysqld start #启动

vim /etc/profile #把mysql服务加入系统环境变量：在最后添加下面这一行

export PATH=$PATH:/usr/local/mysql/bin

使环境变量立即生效

source /etc/profile

下面两行把myslq的库文件链接到系统默认位置，编译类似PHP等软件可不指定mysql的库文件地址。

ln -s /usr/local/mysql/lib/mysql /usr/lib/mysql

ln -s /usr/local/mysql/include/mysql /usr/include/mysql

reboot #重启

mysql_secure_installation #设置Mysql密码

或者直接修改密码/usr/local/mysql/bin/mysqladmin -u root -p password "123456" #修改密码

service mysqld restart #重启

（6）、安装 nginx

groupadd www #添加组

useradd -g www www -s /bin/false #创建账户www并加入到组，不允许www直接登录

cd /usr/local/src

tar zxvf nginx-1.0.14.tar.gz

cd nginx-1.0.14

./configure --prefix=/usr/local/nginx --user=www --group=www --with-http_stub_status_module --with-openssl=/usr/ --with-pcre=/usr/local/src/pcre-8.30

#--with-pcre=/usr/local/src/pcre-8.30指源码包解压的路径，不是安装的路径，否则会报错

make && make install

/usr/local/nginx/sbin/nginx #启动nginx

设置nginx开启启动

vim /etc/rc.d/init.d/nginx #编辑启动文件添加下面内容

#!/bin/bash

# nginx Startup script for the Nginx HTTP Server

# it is v.0.0.2 version.

# chkconfig: - 85 15

# description: Nginx is a high-performance web and proxy server.

# It has a lot of features, but it's not for everyone.

# processname: nginx

# pidfile: /var/run/nginx.pid

# config: /usr/local/nginx/conf/nginx.conf

nginxd=
/usr /local
/nginx /sbin
/nginx

nginx_config=
/usr /local
/nginx /conf
/nginx.conf

nginx_pid=
/usr /local
/nginx /logs
/nginx.pid

RETVAL=
0

prog=
"nginx"

# Source function library.

. /etc /rc.d
/init.d /functions

# Source networking configuration.

. /etc /sysconfig
/network

# Check that networking is up.

[
${NETWORKING} = "no"
] &&
exit
0

[ -x
$nginxd
] ||
exit 0

# Start nginx daemons functions.

start ( )
{

if
[ -e
$nginx_pid ];
then

echo
"nginx already running...."

exit
1

fi

echo
-n $ "Starting $prog: "

daemon $nginxd
-c ${nginx_config}

RETVAL=
$?

echo

[
$RETVAL = 0
] &&
touch /var
/lock /subsys
/nginx

return
$RETVAL

}

# Stop nginx daemons functions.

stop ( )
{

echo
-n $ "Stopping $prog: "

killproc $nginxd

RETVAL=
$?

echo

[
$RETVAL = 0
] &&
rm -f
/var /lock
/subsys /nginx
/usr /local
/nginx /logs
/nginx.pid

}

reload ( )
{

echo
-n $ "Reloading $prog: "

#kill -HUP `cat ${nginx_pid}`

killproc $nginxd
-HUP

RETVAL=
$?

echo

}

# See how we were called.

case
"$1" in

start )

start

;;

stop )

stop

;;

reload )

reload

;;

restart )

stop

start

;;

status )

status $prog

RETVAL=
$?

;;

* )

echo $
"Usage: $prog {start|stop|restart|reload|status|help}"

exit
1

esac

exit
$RETVAL

chmod 775 /etc/rc.d/init.d/nginx #赋予执行权限

chkconfig nginx on #设置开机启动

/etc/rc.d/init.d/nginx restart

service nginx restart

安装php

cd /usr/local/src

tar -zvxf php-5.3.10.tar.gz

cd php-5.3.10

mkdir -p /usr/local/php5 #建立php安装目录

./configure --prefix=/usr/local/php --with-config-file-path=/usr/local/php/etc --with-mysql=/usr/local/mysql --with-mysqli=/usr/local/mysql/bin/mysql_config --with-mysql-sock=/tmp/mysql.sock --with-gd --with-iconv --with-freetype --with-jpeg --with-png --with-zlib
--with-libxml --enable-xml --enable-discard-path --enable-magic-quotes --enable-safe-mode --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curlwrappers --enable-mbregex --enable-fastcgi --enable-fpm --enable-force-cgi-redirect
--enable-mbstring --enable-ftp --enable-gd-native-ttf --with-openssl --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --without-pear --with-gettext --with-mime-magic --enable-suhosin --enable-session --with-mcrypt --with-curl

make && make install

cp php.ini-production /usr/local/php5/etc/php.ini #复制php配置文件到安装目录

rm -rf /etc/php.ini #删除系统自带配置文件

ln -s /usr/local/php5/etc/php.ini /etc/php.ini #添加软链接

ln -s /usr/local/php5/bin/php /usr/bin/php

cp /usr/local/php5/etc/php-fpm.conf.default /usr/local/php5/etc/php-fpm.conf #拷贝模板文件为php-fpm配置文件

vim /usr/local/php5/etc/php-fpm.conf #编辑

user = www #设置php-fpm运行账号为www

group = www #设置php-fpm运行组为www

pid = run/php-fpm.pid #取消注释

设置 php-fpm开机启动

cp /usr/local/src/php-5.3.10/sapi/fpm/init.d.php-fpm /etc/rc.d/init.d/php-fpm #拷贝php-fpm到启动目录

chmod +x /etc/rc.d/init.d/php-fpm #添加权限

chkconfig php-fpm on #设置开机启动

vim /usr/local/php5/etc/php.ini #编辑配置文件

找到：;date.timezone = 修改为：date.timezone = PRC #设置时区

找到：expose_php = On 修改为：expose_php = OFF #禁止显示php版本的信息

找到：display_errors = On 修改为：display_errors = OFF #关闭错误提示

配置nginx支持php

vim /usr/local/nginx/conf/nginx.conf

修改/usr/local/nginx/conf/nginx.conf 配置文件,需做如下修改

user www www; #首行user去掉注释,修改Nginx运行组为www www；必须与/usr/local/php5/etc/php-fpm.conf中的user,group配置相同，否则php运行出错

index index.php index.html index.htm; #添加index.php

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000

#

location ~ \.php$ {

root html;

fastcgi_pass 127.0.0.1:9000;

fastcgi_index index.php;

fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;

include fastcgi_params;

}

/etc/init.d/nginx restart #重启nginx

cd /usr/local/nginx/html/ #进入nginx默认网站根目录

rm -rf /usr/local/nginx/html/* #删除默认测试页

chown www.www /usr/local/nginx/html/ -R #设置目录所有者

chmod 755 /usr/local/nginx/html/ -R #设置目录权限

重启nginx、mysqld、php-fpm服务

安装配置Cacti Web服务

（1）安装rrdtool、net-snmp以及相关依赖包

for i in ` rpm -q rrdtool net-snmp rrdtool-devel net-snmp-devel net-snmp-utils net-snmp-python net-snmp-perl lm_sensors-devel file-devel rpm-devel file intltool libart_lgpl libart_lgpl-devel elfutils pango-devel* cairo-devel* mysql-devel Mod_auth_mysql
php-mysql cairo dejavu-fonts-common.noarch dejavu-lgc-sans-mono-fonts.noarch dejavu-sans-mono-fonts.noarch fontpackages-filesystem.noarch libXft libXrender libthai pango pixman perl-rrdtool net-snmp net-snmp-utils tcp_wrappers-devel |grep 'not installed' |
awk '{print $2}' `; do yum -y install $i; done

修改snmpd配置文件，

vim /etc/snmp/snmpd.conf

找到先对应的行修改，修改为下面内容

com2sec notConfigUser 127.0.0.1 public #127.0.0.1为cacti监控服务器

#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

启动snmpd

service snmpd start

chkconfig snmpd on

安装Cacti

cd /usr/local/src

tar zxvf cacti-0.8.7i.tar.gz

cd cacti-0.8.7i

cp -r * /usr/local/nginx/html

chown www.www /usr/local/nginx/html/ -R #设置目录所有者

chmod 755 /usr/local/nginx/html/ -R #设置目录权限

配置Cacti数据库

mysql -u root -p #输入密码进入MySQL控制台

create database cactidb; #创建数据库cactidb

insert into mysql.user(Host,User,Password) values('localhost','cactiuser',password('123456')); #创建数据库用户cactiuser 密码 123456

grant all on cactidb.* to 'cactiuser'@'%' identified by '123456' with grant option; #授权用户cactiuser对数据库cactidb完全访问

flush privileges; #刷新系统授权表，使设置生效

use cactidb

source /usr/local/nginx/html/cacti.sql #导入cacti数据库文件

vim /usr/local/nginx/html/include/config.php #配置数据库连接

$database_type = "mysql";

$database_default = "cactidb"; #数据库名称

$database_hostname = "localhost"; #主机名称，默认即可

$database_username = "cactiuser"; #数据库用户名

$database_password = "123456"; #数据库密码

$database_port = "3306"; #MySQL数据库默认连接端口

$database_ssl = false;

打开http://Cacti-IP/ 出现安装界面

点击一步

每个选项下面都是[OK: FILE FOUND]，表示配置文件路径全部正确

完成之后出现登录界面

默认的用户名和密码都是admin

第一次需要密码修改，修改后点save

因为cacti主要是通过poller.php来触发数据的采集，在crontab设置cacti每隔5分钟采集一次数据

crontab -e

*/5 * * * * php /usr/local/nginx/html/poller.php &> /dev/null

重启crond

/usr/bin/php /usr/local/nginx/html/poller.php #手动刷新数据