nginx上搭建cacti
Cacti是一套基於PHP,MySQL,SNMP及RRDTool開發的網絡流量監測圖形分析工具
www.2cto.com
Cacti和Nagios是現在使用比較多的網絡監控軟件了，對於這兩款監控軟件的區別，應該說是側重點的不同。 Cacti比較著重於直觀數據的監控，易於生成圖形，用來監控網絡流量、cpu使用率、硬盤使用率等可以說很在合適不過。 而Nagios則比較注重於主機和服務的監控，並且有很強大的發送報警信息的功能。 把兩者結合起來，既可以使報警機制高效及時，又可以很容易的查看各項數據的情況。
一、在LNMP（linux+nginx+mysql+php）上搭建cacti
1.修改selinux
vim /etc/selinux/config
修改為
selinux=disabled
關閉防火牆
service iptables stop
chkconfig iptables off
重啟將selinux生效reboot
安裝編譯工具及庫文件
www.2cto.com
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 $i; done
安裝libmcrypt
cd /usr/local/src
tar zxvf libmcrypt-2.5.7.tar.gz
cd libmcrypt-2.5.7
./configure
make && make install
安裝cmake
cd /usr/local/src
tar zxvf cmake-2.8.7.tar.gz
cd cmake-2.8.7
./configure
make && make install
安裝pcre
cd /usr/local/src
mkdir /usr/local/pcre #創建安裝目錄
tar zxvf pcre-8.30.tar.gz
cd pcre-8.30
./configure --prefix=/usr/local/pcre
make && make install
安裝mysql
groupadd mysql #添加mysql組
useradd -g mysql mysql -s /bin/false #創建mysql加入到mysql組，不允許mysql登錄
mkdir -p /data/mysql #創建MySQL數據庫存放目錄
chown -R mysql:mysql /data/mysql #設置MySQL數據庫目錄權限
mkdir -p /usr/local/mysql #創建MySQL安裝目錄
cd /usr/local/src
tar zxvf mysql-5.5.21.tar.gz
cd mysql-5.5.21
cmake . -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DMYSQL_DATADIR=/data/mysql-DSYSCONFDIR=/etc #配置
make
make install
cd /usr/local/mysql
cp ./support-files/my-huge.cnf /etc/my.cnf #拷貝配置文件
vim /etc/my.cnf #在 [mysqld] 部分增加datadir = /data/mysql #添加MySQL數據庫路徑
./scripts/mysql_install_db --user=mysql #生成mysql系統數據庫
cp ./support-files/mysql.server /etc/rc.d/init.d/mysqld #把Mysql加入系統啟動
chmod 755 /etc/init.d/mysqld #增加執行權限
chkconfig mysqld on #加入開機啟動
vim /etc/rc.d/init.d/mysqld #編輯
basedir = /usr/local/mysql #MySQL程序安裝路徑
datadir = /data/mysql #MySQl數據庫存放目錄
service mysqld start #啟動
vim /etc/profile #把mysql服務加入系統環境變量：在最後添加下面這一行
export PATH=$PATH:/usr/local/mysql/bin
使環境變量立即生效
source /etc/profile
下面兩行把myslq的庫文件鏈接到系統默認位置，編譯類似PHP等軟件可不指定mysql的庫文件地址。
ln -s /usr/local/mysql/lib/mysql /usr/lib/mysql
ln -s /usr/local/mysql/include/mysql /usr/include/mysql
reboot #重啟
mysql_secure_installation #設置Mysql密碼
或者直接修改密碼/usr/local/mysql/bin/mysqladmin -u root -p password "123456" #修改密碼
service mysqld restart #重啟
（6）、安裝 nginx
groupadd www #添加組
useradd -g www www -s /bin/false #創建賬戶www並加入到組，不允許www直接登錄
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指源碼包解壓的路徑，不是安裝的路徑，否則會報錯
make && make install
/usr/local/nginx/sbin/nginx #啟動nginx
設置nginx開啟啟動
vim /etc/rc.d/init.d/nginx #編輯啟動文件添加下面內容
#!/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 #賦予執行權限
chkconfig nginx on #設置開機啟動
/etc/rc.d/init.d/nginx restart
service nginx restart
安裝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安裝目錄
./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 #復制php配置文件到安裝目錄
rm -rf /etc/php.ini #刪除系統自帶配置文件
ln -s /usr/local/php5/etc/php.ini /etc/php.ini #添加軟鏈接
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 #拷貝模板文件為php-fpm配置文件
vim /usr/local/php5/etc/php-fpm.conf #編輯
user = www #設置php-fpm運行賬號為www
group = www #設置php-fpm運行組為www
pid = run/php-fpm.pid #取消注釋
設置 php-fpm開機啟動
cp /usr/local/src/php-5.3.10/sapi/fpm/init.d.php-fpm /etc/rc.d/init.d/php-fpm #拷貝php-fpm到啟動目錄
chmod +x /etc/rc.d/init.d/php-fpm #添加權限
chkconfig php-fpm on #設置開機啟動
vim /usr/local/php5/etc/php.ini #編輯配置文件
找到：;date.timezone = 修改為：date.timezone = PRC #設置時區
找到：expose_php = On 修改為：expose_php = OFF #禁止顯示php版本的信息
找到：display_errors = On 修改為：display_errors = OFF #關閉錯誤提示
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去掉注釋,修改Nginx運行組為www www；必須與/usr/local/php5/etc/php-fpm.conf中的user,group配置相同，否則php運行出錯
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 #重啟nginx
cd /usr/local/nginx/html/ #進入nginx默認網站根目錄
rm -rf /usr/local/nginx/html/* #刪除默認測試頁
chown www.www /usr/local/nginx/html/ -R #設置目錄所有者
chmod 755 /usr/local/nginx/html/ -R #設置目錄權限
重啟nginx、mysqld、php-fpm服務
安裝配置Cacti Web服務
（1）安裝rrdtool、net-snmp以及相關依賴包
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
找到先對應的行修改，修改為下面內容
com2sec notConfigUser 127.0.0.1 public #127.0.0.1為cacti監控服務器
#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
啟動snmpd
service snmpd start
chkconfig snmpd on
安裝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 #設置目錄所有者
chmod 755 /usr/local/nginx/html/ -R #設置目錄權限
配置Cacti數據庫
mysql -u root -p #輸入密碼進入MySQL控制台
create database cactidb; #創建數據庫cactidb
insert into mysql.user(Host,User,Password) values('localhost','cactiuser',password('123456')); #創建數據庫用戶cactiuser 密碼 123456
grant all on cactidb.* to 'cactiuser'@'%' identified by '123456' with grant option; #授權用戶cactiuser對數據庫cactidb完全訪問
flush privileges; #刷新系統授權表，使設置生效
use cactidb
source /usr/local/nginx/html/cacti.sql #導入cacti數據庫文件
vim /usr/local/nginx/html/include/config.php #配置數據庫連接
$database_type = "mysql";
$database_default = "cactidb"; #數據庫名稱
$database_hostname = "localhost"; #主機名稱，默認即可
$database_username = "cactiuser"; #數據庫用戶名
$database_password = "123456"; #數據庫密碼
$database_port = "3306"; #MySQL數據庫默認連接端口
$database_ssl = false;
打開http://Cacti-IP/ 出現安裝界面
點擊一步
每個選項下面都是[OK: FILE FOUND]，表示配置文件路徑全部正確
完成之後出現登錄界面
默認的用戶名和密碼都是admin
第一次需要密碼修改，修改後點save
因為cacti主要是通過poller.php來觸發數據的采集，在crontab設置cacti每隔5分鐘采集一次數據
crontab -e
*/5 * * * * php /usr/local/nginx/html/poller.php &> /dev/null
重啟crond
/usr/bin/php /usr/local/nginx/html/poller.php #手動刷新數據
