企业级监控工具cacti安装配置全过程
基础信息:OS：RHEL 5.8
SOFT： apr-util-1.4.1.tar.bz2cmake-2.8.6.tar.gzlibmcrypt-2.5.8.tar.gzphp-5.4.36.tar.bz2
rrdtool-1.4.7.tar.tar apr-1.4.6.tar.bz2 cacti-0.8.8c.tar.gz httpd-2.4.2.tar.bz2
mysql-5.5.22.tar.gz php-5.4.5.tar.bz2
首先编译安装LAMP平台，建议卸载掉对应rpm包，否则在各程序协作的时候可能会有问题。
[*]install apr and apr-util：
[*]tar xf apr-1.4.6.tar.bz2
cd apr-1.4.6
./buildconf
./configure --prefix=/usr/local/apr
make
make install
tar xf apr-util-1.4.1.tar.bz2
cd apr-util-1.4.1
./configure --prefix=/usr/local/apr-util --with-apr=/usr/local/apr
make
make install
[*]install apache：
yum -y install pcre-devel
tar xf httpd-2.4.2.tar.bz2
cd httpd-2.4.2
./configure --prefix=/usr/local/apache --sysconfdir=/etc/httpd --enable-so --enable-suexec --enable-ssl --enable-rewrite --enable-rewrite --with-zlib --with-pcre --with-apr=/usr/local/apr --with-apr-util=/usr/local/apr-util --enable-modules=most --enable-modules-shared=most --enable-mpms-shared=all
make
make install
echo "PATH=$PATH:/usr/local/apache/bin" >> /etc/profile
export PATH=$PATH:/usr/local/apache/bin
echo "MANPATH/usr/local/apache/man " >> /etc/man.config
ln -sv /usr/local/apache/include /usr/include/httpd
[*]install cmake:
tar xf cmake-2.8.8.tar.gz
cd cmake-2.8.8
./bootstrap
make
make install
[*]install mysql
groupadd -r mysql
useradd -g mysql -r -d /data/mysql mysql
tar xf mysql-5.5.22a.tar.gz
cd mysql-5.5.22a
cmake . -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DMYSQL_DATADIR=/data/mysql -DSYSCONFDIR=/etc -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_ARCHIVE_STORAGE_ENGINE=1 -DWITH_FEDERATED_STORAGE_ENGINE=1-DWITH_READLINE=1 -DWITH_SSL=system -DWITH_ZLIB=system -DWITH_LIBWRAP=0 -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DENABLE_PROFILING=1
make
make install
[*]cd /usr/local/mysql
chown -R :mysql .
mkdir -pv /data/mysql
chown -R mysql:mysql /data/
cp /usr/local/mysql/support-files/my-large.cnf /etc/my.cnf
cp /usr/local/mysql/support-files/mysql.server /etc/rc.d/init.d/mysqld
chmod +x /etc/rc.d/init.d/mysqld
chkconfig --add mysqld
scripts/mysql_install_db --user=mysql --datadir=/data/mysql
sed -i '//a datadir = /data/mysql' /etc/my.cnf
sed -i 's/thread_concurrency = 8/thread_concurrency = 2/g' /etc/my.cnf
echo "PATH=$PATH:/usr/local/mysql/bin" >> /etc/profile
export PATH=$PATH:/usr/local/mysql/bin
echo "MATHPATH /usr/local/mysql/man" >> /etc/man.config
ln -sv /usr/local/mysql/include /usr/include/mysql
echo " /usr/local/mysql/lib " >> /etc/ld.so.conf.d/mysql.conf
ldconfig
servicemysqld start
6.install php
安装php之前有可能会要求安装libmcrypt，我直接在chinaunix下载的源码 编译安装即可，然后编译PHP时加上 --with-mcrypt=DIR
tar xfphp-5.4.4.tar.bz2
cdphp-5.4.4
./configure --prefix=/usr/local/php --with-mysql=/usr/local/mysql --with-openssl --with-mysqli=/usr/local/mysql/bin/mysql_config --enable-mbstring --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml--with-apxs2=/usr/local/apache/bin/apxs --with-mcrypt--with-config-file-path=/etc --with-config-file-scan-dir=/etc/php.d --with-bz2 --enable-sockets
make
make install
cp php-5.4.4/php.ini-production /etc/php.ini
echo "AddType application/x-httpd-php.php " >> /etc/httpd/httpd.conf
echo "AddType application/x-httpd-php-source.phps" >> /etc/httpd/httpd.conf
sed -i 's/DirectoryIndex index.html/DirectoryIndex index.php index.html/g' /etc/httpd/httpd.conf
上面所有操作无错误执行完以后可以建个测试php页测试下是不是OK，如果没问题，开始装cacti部分：
1.我为cacti直接建立的虚拟主机：
首先修改httpd.conf添加:include /etc/httpd/extra/httpd-vhosts.conf
然后修改http-vhosts.conf：
DocumentRoot "/usr/local/apache/htdocs/cacti
ServerName cacti.jerry.com
ErrorLog "logs/cacti-error_log"
CustomLog "logs/cacti-access_log" common
2.安装rrdtool：
tar xf rrdtool-1.4.7.tar.gz
cd rrdtool-1.4.7
./configure --prefix=/usr/local/rrdtool
make
make install
echo "MANPATH/usr/local/rrdtool/share/man" >> /etc/man.config
echo "PATH=$PATH:/usr/local/rrdtool/bin " >> /etc/profile
export PATH=$PATH:/usr/local/rrdtool/bin
ln -sv /usr/local/rrdtool/include /usr/include/rrdtool
echo "/usr/local/rrdtool/lib" >> /etc/ld.so.conf.d/rrdtool.conf
ldconfig
3.yum安装net-snmp、net-snmp-util并设置自动运行，此处不给详细命令了
4.安装cacti
为cacti创建数据库，并初始化所需要表：
[*]mysqladmin create cacti //此时的密码为mysql的密码
[*]cd /usr/local/apache/htdocs/cacti
[*]mysql cacti < cacti.sql
创建mysql用户，使用cacti能访问其cacti数据库
mysql -e "GRANT ALL ON cacti.* TO cactiuser@localhost IDENTIFIED BY 'cactiuser'";
[*]//创建了用户cactiuser 密码也为cactiuser
[*]mysqladmin -p flush-privileges
[*]mysql -ucactiuser -p //验证一下是否正确
接着创建系统用户cactiuser，以之运行cacti的数据获取和日志记录等工作
[*]useradd cactiuser
[*]chown -R cactiuser:cactiuser /usr/local/apache/htdocs/cacti/{log,rra}
以cactiuser用户的身份，每5钟获取一次数据：
[*]echo '*/5 * * * */usr/local/php/bin/php /usr/local/apache/htdocs/cacti/poller.php &> /dev/null' > /var/spool/cron/cactiuser
修改php时区：
[*]vim /etc/php.ini
[*]date.timezone = Asia/Shanghai
编辑cacti的配置文件include/config.php启用并修改如下行：
//$url_path = "/cacti/";
我们这里将之修改为：
$url_path = "/";
而后在浏览器中打开http://cacti.jerry.com，按提示一步步配置即可完成安装。
密码第一次输入的时候，会让修改密码，用户默认为admin 密码为admin
我在装完重启添加其它设备的时候发现不能新建rrd文件,仔细检查发现输出到/etc/profile下的PATH环境变量写错了（rrdtool和mysql及php），修改正确后再执行poller.php就能出图了（需要注意的是尽管手工执行poller.php也不是当时就执行，检查是否真的执行了要看cacti.log）.
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