遇到问题:公司服务器需实现监控及报警等功能 解决问题:使用nagios+cacti 准备环境:
为以后的配置搭建安装环境
yum install –y http* mysql-devel mysql-server php-* net-snmp-* gd gd-devel perl-libwww-perl 一:Nagios环境的搭建
注:所有的tar包都放置在/soft下。
1.安装nagios
cd /soft
tar zxf nagios-cn-3.3.2.tar.gz
cd nagios-cn-3.2.3
./configure --prefix=/var/www/html/nagios
make all
useradd nagios
make install && make install-init&& make install-commandmode && make install-config &&make install-webconf
2.增加nagios登陆认证文件,
htpasswd -c /var/www/html/nagios/etc/htpasswd.users control http://blog.运维网.com/attachment/201307/135015714.jpg
3. 安装插件:
cd /soft
tar -zvxf nagios-plugins-1.4.16.tar.gz
cd nagios-plugins-1.4.16
./configure --prefix=/var/www/html/nagios/ make&&makeinstall
make && make install4.将运行Apache的用户添加到nagios组里,这样Apache才有权限读取文件
usermod -G nagios apache ##将apache用户加到nagios组。
5.阶段测试
chown nagios.nagios /var/www/html/nagios/ -R
service httpd start
chkconfig httpd on
/etc/init.d/nagios start
启动snmp服务:
service snmpd start
3.安装cacti
wget http://www.cacti.net/downloads
cd /soft
tar zxvf cacti-0.8.7h.tar.gz
mv cacti-0.8.7h /var/www/html/cacti
4.创建cacti数据库
#注意导入cacti.sql时该文件的路径
mysql
mysql> create database cacti;
mysql> grant all privileges on cacti.* to cacti@localhost identified by 'cacti'with grant option;
mysql> grant all privileges on cacti.* to cacti@127.0.0.1 identified by 'cacti'with grant option;
mysql> use cacti;
mysql> source /var/www/html/cacti/cacti.sql;
mysql> flush privileges;
mysql> \q 然后回车退出即可6.配置cacti以连接数据库 ,分别编辑两个.php文件,以适应环境,修改内容相同。
vim /var/www/html/cacti/include/config.php
vim /var/www/html/cacti/include/global.php
exit
解决php的It is not safe to rely on the system’stimezone settings的问题
3Vim /etc/php.ini 添加如下信息:
4date.timezone= “Asia/Chongqing” http://blog.运维网.com/attachment/201307/135314196.jpg
8.确保服务器的selinux是不不关闭状态,使用setenforce 0 关闭,getenforce查看状态,或者修改配置文件/etc/selinux/config中“SELINUX=disable”,然后从web页面启动cacti,安装,并查看图形化界面,cacti界面的初始登录帐号:
在浏览器中输入: http://ip/cacti
User:admin
Passwd:admin
登录后,系统会强制要求修改密码操作的 三:整合Nagios与Cacti
1.下载并安装ndoutils
cd /soft
tar zxvf ndoutils-1.4b9.tar.gz
cd ndoutils-1.4b9
./configure --prefix=/var/www/html/nagios/--enable-mysql --disable-pgsql --with-mysql-inc=/usr/include/mysql --with-mysql-lib=/usr/lib/mysql
makehttp://blog.运维网.com/attachment/201307/135352347.jpg
2.准备配置文件
cp -vsrc/{ndomod-3x.o,ndo2db-3x,file2sock,log2ndo} /var/www/html/nagios/bin
cd db
./installdb -ucacti -pcacti -hlocalhost -dcacti
cd ..
cp -vconfig/{ndo2db.cfg-sample,ndomod.cfg-sample} /var/www/html/nagios/etc
mv /var/www/html/nagios/etc/ndo2db.cfg-sample/var/www/html/nagios/etc/ndo2db.cfg
mv /var/www/html/nagios/etc/ndomod.cfg-sample/var/www/html/nagios/etc/ndomod.cfg
chmod 644 /var/www/html/nagios/etc/ndo*
chown nagios:nagios /var/www/html/nagios/etc/*
chown nagios:nagios /var/www/html/nagios/bin/*3.修改nagios.cfg配置文件以适应当前环境
vim /var/www/html/nagios/etc/nagios.cfg
# 在文件中添加: 添加以下一行(注意下面只能是一行,否则nagios启动报错)broker_module=/var/www/html/nagios/bin/ndomod-3x.o config_file=/var/www/html/nagios/etc/ndomod.cfg
中间用空格 http://blog.运维网.com/attachment/201307/135436991.jpg
5# 检查
6 event_broker_options=-1 ## 为Nagios开启event broker,默认无需修改
4.修改ndo2db.cfg以适应当前环境
vim /var/www/html/nagios/etc/ndo2db.cfg
7 # 确保下列内容为唯一项
socket_type=tcp
db_servertype=mysql
db_host=127.0.0.1
db_port=3306
db_name=cacti
db_prefix=npc_
db_user=cacti
db_pass=cacti
5.修改ndomod.cfg以适应当前环境
vim /var/www/html/nagios/etc/ndomod.cfg
16# 确保下列项的唯一内容为
output_type=tcpsocket
output=127.0.0.1
#output=/var/www/html/nagios//var/ndo.sock
buffer_file=/var/www/html/nagios/var/ndomod.tmp http://blog.运维网.com/attachment/201307/135508834.jpg
6.为ndo2db添加启动进程
cp /soft/ndoutils-1.4b9/daemon-init /etc/init.d/ndo2db
vim /etc/init.d/ndo2db
19# 检查里面的路径确保不会出现“//",并将Ndo2dbBin修改成下面的值:
Ndo2dbBin=/var/www/html/nagios/bin/ndo2db-3x
Ndo2dbCfgFile=/var/www/html/nagios/etc/ndo2db.cfg
Ndo2dbVarDir=/var/www/html/nagios/var
chmod +x /etc/init.d/ndo2db
7.启动守护进程与nagios
/var/www/html/nagios/bin/ndo2db-3x -c/var/www/html/nagios/etc/ndo2db.cfg
【注意这里如果启动报错,则是因为未安装mysql-devel导致,故提前安装】
tail -20 /var/log/messages ## 查看其中是否有错误出现。如无报错请继续
service nagios start 四:安装npc,以在Cacti中展现Nagios
1.先安装cacti扩展模块
wge thttp://www.cacti.net/downloads/pia/cacti-plugin-0.8.7h-PA-v3.0.tar.gz
cd /soft
tar xvf cacti-plugin-0.8.7h-PA-v3.0.tar.gz
cp -R cacti-plugin-arch/* /var/www/html/cacti/
cd /var/www/html/cacti/
mysql -ucacti -pcacti cacti < pa.sql
patch -p1 -N User Management----> admin”然后在“Realm Permissions”选
项卡中勾选“Plugin Management”,然后点击Save 进行保存!
此时我们会在控制台---> Configuration 选项卡下多了一个Plugin Management 选项卡,到此cacti 架构扩展完成!!
2.安装npc
cd /soft
tar zxvf npc-2.0.4.tar.gz
mv npc /var/www/html/cacti/plugins/
vim /var/www/html/cacti/include/config.php加入:
$plugins[] = 'npc';
3.修改配置文件以让npc读取到新的数据。
vim /var/www/html/nagios/etc/ndo2db.cfg
db_prefix=npc_
4 写一个php的测试页面
vi /var/www/html/test.php http://blog.运维网.com/attachment/201307/135731740.jpg
完成之后,在网页测试http://ip/test.php
从Web进入Cacti,确保正确使用npc选项。(一定记得要启用npc,否则下面更新mysql的表结构,会报没有表)
5. 修改mysql中的表结构:
mysql
use cacti;
alter table npc_eventhandlers add long_outputTEXT NOT NULL default '' after output;
alter table npc_hostchecks add long_outputTEXT NOT NULL default '' after output;
alter table npc_hoststatus add long_outputTEXT NOT NULL default '' after output;
alter table npc_notifications add long_outputTEXT NOT NULL default '' after output;
alter table npc_servicechecks add long_outputTEXT NOT NULL default '' after output;
alter table npc_servicestatus add long_outputTEXT NOT NULL default '' after output;
alter table npc_statehistory add long_outputTEXT NOT NULL default '' after output;
alter table npc_systemcommands addlong_output TEXT NOT NULL default '' after output;6.重启ndo2db进程,重新加载配置文件重启nagios服务。