10 nagios
Cacti软件准备php-devel-5.1.6-27.el5.i386.rpm
php-json-ext-1.2.1.tar.bz2
php-mysql-5.1.6-40.el5_9.i386.rpm（如果不安装，则php连不上mysql）
php-pdo-5.1.6-40.el5_9.i386.rpm（可能是php-mysql的依赖包，在yum安装php-mysql时连带安装）
yum -y install php-devel php-mysql php-pdo
php-json-ext不能yum安装上，因此需要手工安装。参见下面的安装过程。
Cacti服务器软件安装
参考资料
http://viong.blog.运维网.com/844766/286701
http://viong.blog.运维网.com/844766/288278
http://www.cacti.net
http://www.aydnw.com/html/database/mysql/22526.html
http://peaceweb.blog.运维网.com/3226037/1065783
Json安装
#rpm -ivh php-devel-5.1.6-27.el5.i386.rpm
tar jxvf php-json-ext-1.2.1.tar.bz2
cd php-json-ext-1.2.1
phpize //如果执行不了，则可能没有安装php-devel
Configuring for:
PHP Api Version: 20041225
Zend Module Api No: 20050922
Zend Extension Api No: 220051025
./configure
make && make install
find / -name *json.so
/usr/lib/php/modules/json.so
/root/soft/php-json-ext-1.2.1/modules/json.so
/root/soft/php-json-ext-1.2.1/.libs/json.so
vi /etc/php.d/json.ini //添加以下内容
extension=json.so
保存退出
service httpd restart
测试PHP是否支持json扩展：
vi /var/www/html/test.php
添加以下内容
保存退出
在IE输入http://192.168.50.115/test.php 看到以下信息
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300349IdM3.jpg
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300351Fb7L.jpg
测试PHP连接mysql：
首先需要根据以下内容安装好mysql并启动，然后创建测试脚本：
vi /var/www/html/testdb.php
添加以下内容
保存退出
在IE输入http://192.168.50.115/testdb.php 看到以下信息:
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300352nCYb.jpg
如果没有安装php-mysql，则不会显示成功或者失败。密码不正确，权限不对当然也不能连接哦。
Rrdtool安装
http://pkgs.repoforge.org/rrdtool/
#yum install libdbi 或 # rpm -ivh libdbi-0.8.1-2.1.i386.rpm
# rpm -ivh lua-5.1.4-2.el5.rf.x86_64.rpm rpm -ivh lua-5.1.4-2.el5.rf.i386.rpm
以上两个为rrdtoo的依赖包。
rpm -ivh rrdtool-1.4.7-1.el5.rf.x86_64.rpm rrdtool-devel-1.4.7-1.el5.rf.x86_64.rpm perl-rrdtool-1.4.7-1.el5.rf.x86_64.rpm
以上三个包要一起安装否则会报一些错误，如找不到perl(RRDp) 什么的。
# rpm -ivh perl-rrdtool-1.4.7-1.el5.rf.i386.rpm rrdtool-devel-1.4.7-1.el5.rf.i386.rpm rrdtool-1.4.7-1.el5.rf.i386.rpm
Mysql安装
yum install mysql-server
yum install mysql-devel
yum install mysql
Cacti安装
1， 安装Cacti包
# tar -zxvf cacti-0.8.8a.tar.gz
mv cacti-0.8.8a /var/www/html/cacti/
chown -R root.root /var/www/html/cacti/
2， 配置mysql
mysql -u root -h 127.0.0.1 -p
Enter password:
mysql> create database nagios;
Query OK, 1 row affected (0.01 sec)
mysql> grant all on nagios.* to ndouser@localhost identified by '111111';
grant all on nagios.* to ndouser@127.0.0.1 identified by '111111';
grant all on nagios.* to ndouser@192.168.50.0 identified by '111111';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '111111' WITH GRANT OPTION;
flush privileges;
quit;
到cacti根目录下把cacti.sql中的数据导入到数据库cacti中
#cd /var/www/html/cacti
mysql -uroot -p nagios&1
# crontab -e
*/5 * * * * php /var/www/html/cacti/poller.php > /dev/null 2>&1
也可手工跑一次: /usr/bin/php /var/www/html/cacti/poller.php
手工跑的时候报错：
1）# php /var/www/html/cacti/poller.php
PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/mysql.so' - /usr/lib/php/modules/mysql.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Notice: Constant URL_PATH already defined in /var/www/html/cacti/include/global.php on line 121
网上搜了下说是MySQL-shared-community没安装，到以下网址下载对应的版本（先查mysql的版本：rpm -qa|grep mysql。我查到的版本是mysql-5.0.95-5.el5_9，因此下载MySQL-shared-community-5.0.95-1.rhel5.i386.rpm）：
http://rpm.pbone.net/index.php3?stat=3&limit=2&srodzaj=3&dl=40&search=MySQL-shared-community
2）PHP Warning: strtotime(): It is not safe to rely on the system's timezone settings.
vi /etc/php.ini
date.timezone=PRC
安装后还有问题：
# php /var/www/html/cacti/poller.php
PHP Notice: Constant URL_PATH already defined in /var/www/html/cacti/include/global.php on line 121
FATAL: Cannot connect to MySQL server on 'localhost'. Please make sure you have specified a valid MySQL database name in 'include/config.php'
将include/config.php中的localhost，改成127.0.0.1也不行，然后执行：
然后执行了下：grant all on nagios.* to ndouser@localhost identified by 'ndopassword';
还是有错：
# php /var/www/html/cacti/poller.php
PHP Notice: Constant URL_PATH already defined in /var/www/html/cacti/include/global.php on line 121
PHP Notice: Constant OPER_MODE_NATIVE already defined in /var/www/html/cacti/include/global_constants.php on line 192
PHP Notice: Constant OPER_MODE_RESKIN already defined in /var/www/html/cacti/include/global_constants.php on line 193
PHP Notice: Constant OPER_MODE_IFRAME_NONAV already defined in /var/www/html/cacti/include/global_constants.php on line 194
sh: -q: command not found
sh: -: command not found
半天有憋出来两行：
07/10/2013 01:25:59 PM - POLLER: Poller Maximum runtime of 298 seconds exceeded. Exiting.
07/10/2013 01:25:59 PM - SYSTEM STATS: Time:298.7934 Method:cmd.php Processes:1 Threads:N/A Hosts:2 HostsPerProcess:2 DataSources:0 RRDsProcessed:0
不过再次运行报一些警告信息，先不管他。
有时候执行 php -v ，报以下错误：
PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/json.so' - /usr/lib64/php/modules/json.so: undefined symbol: ZVAL_DELREF in Unknown on line 0
解决的办法也是需要安装MySQL-shared-community。
如果还是不行，则执行以下命令(http://stackoverflow.com/questions/7979864/php-5-3-8-json-centos-6)：
# yumdownloader php-common
# rpm -Uvh --force php-common*.rpm
# service httpd reload
# rm php-common*.rpm
此后，执行php -v就正确了：
# php -v
PHP 5.3.3 (cli) (built: Jul 12 2013 20:35:47)
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
#
配置cacti
http://127.0.0.1/cacti/install/
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300356qZSn.jpg
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300357wimk.jpg
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300359uAyP.jpg
里面的所有的项全部变绿色就行了，否则安装相关的包，如net-snmp有关的包。
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300360uCHc.jpg
输入用户名和密码admin/admin，第一次需要强行修改密码。
Npc安装
NPC（Nagios Plugin for Cacti）是一个Cacti插件，安装后可以在Cacti界面里使用Nagios的功能。
# wget http://www.constructaegis.com/downloads/npc-2.0.4.tar.gz
# tar -zxvf npc-2.0.4.tar.gz
mv npc/ /var/www/html/cacti/plugins/
vi /var/www/html/cacti/include/global.php
添加以下参数
$plugins= array();
$plugins[] = 'npc';
如下图：
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300360xbKI.jpg
保存退出
修改ndo2db.cfg
vi /usr/local/nagios/etc/ndoutils/ndo2db.cfg
db_prefix=nagios_ 修改为db_prefix=npc_
查看日志
tail -100 /var/log/messages
tail -100 /usr/local/nagios/var/nagios.log
tail -100 /usr/local/nagios/var/ndo2db.debug
3、cacti插件npc提示no hosts
tail -100 /var/log/messages
localhost ndo2db-3x: mysql_error: 'Unknown column 'long_output' in 'field list''
添加缺失的对应字段（这里可能会报不能使用默认值，可将DEFAULT ''去除后重新执行）
ALTER TABLE npc_eventhandlers ADD long_output TEXT NOT NULL DEFAULT '' AFTER output;
ALTER TABLE npc_hostchecks ADD long_output TEXT NOT NULL DEFAULT '' AFTER output;
ALTER TABLE npc_hoststatus ADD long_output TEXT NOT NULL DEFAULT '' AFTER output;
ALTER TABLE npc_notifications ADD long_output TEXT NOT NULL DEFAULT '' AFTER output;
ALTER TABLE npc_servicechecks ADD long_output TEXT NOT NULL DEFAULT '' AFTER output;
ALTER TABLE npc_servicestatus ADD long_output TEXT NOT NULL DEFAULT '' AFTER output;
ALTER TABLE npc_statehistory ADD long_output TEXT NOT NULL DEFAULT '' AFTER output;
ALTER TABLE npc_systemcommands ADD long_output TEXT NOT NULL DEFAULT '' AFTER output;
FLUSH PRIVILEGES;
重启ndo2db nagios 服务
Shell>service ndo2db restart
Shell>/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
NPC界面设置
点击（console）菜单栏 user management------->admin
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300361kZRZ.jpg
在realm permission---plugin management（打勾）
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300361BRgB.jpg
返回（console）菜单栏，点击configuration--------plugin management—安装并激活npc插件
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300361q4Tk.jpg
返回（console）菜单栏，点击configuration-------settings----NPC，修改一下三个参数。这里的url的ip需要根据自己安装的nagios的ip地址进行填写。
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300361dDPS.jpg
/usr/local/nagios/var/rw/nagios.cmd
http://192.168.0.51/nagios
返回（console）菜单栏，点击插件链接区-NPC
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300362944G.jpg
但是看npc里发现空白的，没有数据，是因为php没有PDO_MYSQL支持，所以安装PDO_MYSQL
1. # wget http://pecl.php.net/get/PDO_MYSQL-1.0.2.tgz
2. # tar zxvf PDO_MYSQL-1.0.2.tgz
3. # cd PDO_MYSQL-1.0.2
4. # /usr/local/php/bin/phpize 如果php是yum安装的，则直接执行phpize
5. #./configure --with-php-config=/usr/bin/php-config 如果php是yum安装的就不需要 –-with......
6. #make
7. #make install
8.
9. 修改php.ini，添加如下信息，之后重启httpd即可
10. extension = "pdo_mysql.so"
如果报错：
configure: error: mysql_query missing!?
则：
mkdir /usr/share/mysql/bin
ln -s /usr/bin/mysql /usr/share/mysql/bin/mysql
以上两句不一定有用
ln -s /usr/lib/mysql/* /usr/local/lib/
如果出现以下错误：
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300363HolF.jpg
则，找一下mysql的头文件：
find / -name 'mysql.h'
找到在/usr/include/mysql/中，则：
ln -s /usr/include/mysql/* /usr/local/include/
./configure --with-php-config=/usr/bin/php-config --with-pdo-mysql=/usr/share/mysql
这样configure就可以了，然后在make && make install
http://192.168.0.51/test.php
http://sandjj.blog.运维网.com/attachment/201309/16/1141448_1379300363KLl1.jpg
之后再访问就可看到有数据了：
如果发现mysql数据库中只有nagios_开头的表，而没有npc_开头的表，请删除数据库后重新创建数据库。
重新创建数据库
mysql>drop database nagios;
Create database nagios;
grant all on nagios.* to ndouser@localhost identified by '111111';
grant all on nagios.* to ndouser@127.0.0.1 identified by '111111';
grant all on nagios.* to ndouser@192.168.50.0 identified by '111111';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '111111' WITH GRANT OPTION;
flush privileges;
quit;
# cd ndoutils-1.5.2/db
mysql -uroot -p nagios
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