RHEL6 Nagios 部署+fetion整合

 

RHEL6 Nagios 部署

系統環境:RHEL6 x86_64 selinux and iptables disabled

nagios 主機:192.168.0.5

mysql 主機: 192.168.0.1

一，監控本機

安裝所須要軟件

yum install httpd gcc make perl-ExtUtils-Embed.x86_64 -y

rpm -ivh gd-devel-2.0.35-10.el6.x86_64.rpm

 

 

useradd nagios                       運行 nagios 服務的用戶

usermod -G nagios apache           使 apache 用戶對 nagios 目錄具備寫權限,否則 web 頁面操做失敗

 

tar jxf nagios-cn-3.2.3.tar.bz2        解壓nagios

cd nagios-cn-3.2.3

./configure –-enable-embedded-perl 編譯

make all

make install

make install-init

make install-commandmode

make install-config

make install-webconf

 

yum install mysql-devel openssl-devel -y 編譯所需軟件包

tar zxf nagios-plugins-1.4.15.tar.gz        nagios 插件安裝

cd nagios-plugins-1.4.15

./configure —with-nagios-user=nagios —with-nagios-group=nagios

--enable-extra-opts —enable-libtap —enable-perl-modules

Make && make install

 

 

vi /usr/local/nagios/etc/nagios.cfg               #nagios配置

cfg_file=/usr/local/nagios/etc/objects/hosts.cfg #新建 hosts.cfg 文件,存放主機與主機組定義

cfg_file=/usr/local/nagios/etc/objects/services.cfg #新建 services.cfg 文件,存放服務與服務組定義

#cfg_file=/usr/local/nagios/etc/objects/localhost.cfg#註釋 localhost.cfg 文件

以下圖：

 

 

cp -r localhost.cfg hosts.cfg

vi /usr/local/nagios/etc/objects/hosts.cfg

去掉service部分，只留下想要的的hosts部分

define host{

        use                     linux-server            ; 給網絡設備用的

        host_name               Desktop5

        alias                   nagios

        address                 192.168.0.5

        2d_coords               100,200

        3d_coords               100,200,100

        }

define hostgroup{

        hostgroup_name linux-servers ; The name of the hostgroup

        alias           Linux Servers ; Long name of the group

        members         *     ; Comma separated list of hosts that belong to this group

        }

以下圖：

 

cp -r localhost.cfg services.cfg

vi /usr/local/nagios/etc/objects/services.cfg

去掉hosts部分，只留下想要的的service部分

 

define servicegroup{

        servicegroup_name    系統負荷檢查

        alias                  負荷檢查

      members               Desktop5,進程總數,Desktop5,登陸用戶數,Desktop5,根分區,Desktop5,交換空間利用率

        }

define servicegroup{

        servicegroup_name           所有聯通性檢查

        alias                          聯通性檢查

        members                     Desktop5,PING

        }

 

define service{

        use                             local-service        

        host_name                      *

        service_description              PING

        check_command                 check_ping!100.0,20%!500.0,60%

        }

 

define service{                             

use                               local-service         

        host_name                       Desktop5

        service_description               根分區

        check_command                  check_local_disk!20%!10%!/

        }

 

                                                                                                                      

define service{

        use                             local-service        

        host_name                      Desktop5

        service_description              進程總數

        check_command                check_local_procs!250!400!RSZDT

        }

 

define service{

        use                              local-service        

        host_name                      Desktop5

        service_description              系統負荷

 check_command                     check_local_load!5.0,4.0,3.0!10.0,6.0,4.0

        }

define service{

        use                                local-service        

        host_name                        Desktop5

        service_description                SSH

        check_command                   check_tcp!22!1.0!10.0

        notifications_enabled              0          

}

 

/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

檢測語法的正確性

/etc/init.d/httpd restart

/etc/init.d/nagios restart

htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin #nagios 監控頁面訪問用戶和密碼

就能訪問http://192.168.0.5/nagio

 

 

二．監控另一臺機器的數據庫（mysql)

Yum install mysql* -y

/etc/init.d/mysql restart

Mysql

mysql>create database nagdb;                                         建立用戶

mysql> grant select on nagdb.* to nagdb@'192.168.0.5';              使其具備查看權限

mysql> flush privileges;                                                刷新數庫                                               

 

在nagios服務器中查看是否可以連接到mysql主機/usr/local/nagios/libexec

/usr/local/nagios/libexec/check_mysql -H 192.168.0.1 -u nagdb -d nagdb

 

在 nagios 主機上添加對 mysql 服務監控的定義

vi /usr/local/nagios/etc/objects/commands.cfg        （添加以下行）

define command{

         command_name   check_mysql

       command_line   $USER1$/check_mysql -H $HOSTADRESS$ -u nagdb -d nagdb

}

vi /usr/local/nagios/etc/objects/hosts.cfg             (添加以下行)   

define host{

       use                     linux-server

       host_name               mysql服務器

       alias                   Desktop1

       address                 192.168.0.1

       2d_coords                500,200

        3d_coords               500,200,100

}

vi /usr/local/nagios/etc/objects/services.cfg （添加以下行）

define service{

        use                           local-service

        host_name                      mysql服務器

        check_command                 check_mysql

 }

 

/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

/etc/init.d/httpd restart

/etc/init.d/ngios restart

就能訪問http://192.168.0.5/nagio

 

 

 

 

 

 

三．Nagios 經過 NRPE 監控遠程主機系統情況

 

 

 

 

遠程主機設定

useradd nagios

 

tar xzf nagios-plugins-1.4.15.tar.gz

cd nagios-plugins-1.4.15

./configure —with-nagios-user=nagios --with-nagios-group=nagios --enable-extra-opts --enable-perl-modules —with-openssl --enable-libtap

 

make

make install

 

yum install xinetd -y

 

tar zxf nrpe-2.12.tar.gz

cd nrpe-2.12

./configure

make all

make install-plugin

make install-daemon

make install-daemon-config

make install-xinetd

 

vi /etc/xinetd.d/nrpe 修改以下行

only_from= 192.168.0.5                         #nagios 主機 ip 地址

 

vi /etc/services      添加以下行

nrpe                 5666/tcp                   nrpe務監聽端口

 

vi /usr/local/nagios/etc/nrpe.cfg                  修改以下行

command[check_disk]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /

#根分區監測

service xinetd restart

netstat -antlp |grep 5666

tcp 0 0 :::5666

#看到以下輸出說明 NRPE 正常啓動,並確保防火牆容許此端口

:::*

LISTEN

26359/xinetd

 

 

監控主機設定

tar zxf nrpe-2.12.tar.gz

cd nrpe-2.12

./configure --with-nagios-user=nagios --with-nagios-group=nagios

make all

make install-plugin

/usr/local/nagios/libexec/check_nrpe -H 192.168.0.1

NRPE v2.12

#如看到以下輸出說明鏈接正常

 

vi /usr/local/nagios/etc/objects/commands.cfg 添加以下行

define command{

command_name        check_nrpe

command_line         $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$

}

 

vi /usr/local/nagios/etc/objects/services.cfg 添加以下行

define service{

        use                           local-service

        host_name                     mysql服務器

        check_command                 check_mysql

        service_description            mysql服務

}

define service{

       use                                generic-service

       host_name                          mysql服務器

       service_description                CPU 使用率

       check_command                      check_nrpe!check_load

}

define service{

       use                                generic-service

       host_name                          mysql服務器

       service_description                登陸用戶數量

       check_command                      check_nrpe!check_users

}

 

define service{

        use                               generic-service

host_name                          mysql服務器

service_description                  根使用率

check_command                     check_nrpe!check_disk

}

 

/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

service nagios reload

#檢測無誤後重載 nagios

 

 

 

Nagios 整合飛信

http://www.it-adv.net/ 下載 fetion 主程序與支持庫

步驟
（1）IP：192.168.0.85：
cd ~
lftp 127.0.0.1
cd /pub/docs/nagios
get fetion cenos54X64_20101113.rar
cd /pub/docs
get rarlinux-3.8.0.tar.gz

cp fetion /usr/local/nagios/libexec
cd /usr/local/nagios/libexec
chmod +x fetion
chown nagios.nagios fetion
(2)執行 /usr/local/nagios/libexec/fetion
出現沒有/lib/ld-linux.so
yum install /lib/ld-linux.so.2 -y
cd /usr/local/nagios/libexec/
./fetion
cd ~
tar zxf rarlinux-3.8.0.tar.gz -C /opt/
cd /opt/rar/unrar
/opt/rar/unrar x cenos54X64_20101113.rar(可能會出錯，須要安裝如下的包，而後從新執行此步。)yum install libstdc++.so.6
（3） cd ~
lftp 192.168.0.254
cd /pub/docs/nagios
get linuxso_20111113.tar.gz
tar zxf linuxso_20111113.tar.gz -C /usr/local/lib(將庫文件放到/usr/local/ib中。ldconfig /usr/local/lib使其生效。)
cd /usr/local/lib
ls 會有4個so文件。
chmod +x *
須要的時候可能須要安裝： yum install libgssapi_krb5.so.2 libz.so.1 zlib文件。
ldconfig /usr/local/lib
/usr/local/nagios/libexec/fetion 7執行成功。

（4）vi /etc/ld.so.conf.d/mysql-x86_64.conf
/usr/lib64/mysql
(5) vi fetion.conf
/usr/local/lib
ldconfig
(6) su - nagios
/usr/local/nagios/libexec/fetion --mobile=158029XXXXX --pwd=XXXXXX(飛信密碼) --to=15802955XXXX --msg-utf8="hello"
而後你去/usr/local/nagios/libexec找到1509154xxxx.jpg,而後將其複製到桌面，查看其驗證碼，而後寫上去，你就會在1509154xxxx收到一個由mobile=1509154xxxx發來的信息哦！）
你第一次用驗證碼，第二次就不用驗證碼。
實驗五：
fetion 與 nagios 配置
步驟（1）cd /usr/local/nagios/libexec/
vi fetion.sh
/usr/local/nagios/libexec/fetion --mobile=158029XXXXX --pwd=qqXXXXX --to="$1" --msg-utf8="$2" > /dev/null
(2) chmod +x fetion.sh
chown ngios.nagios fetion.sh
su - nagios
cd /usr/local/nagios/libexec/
./fetion.sh 1509154xxxx "hello" (測試給1509154xxxx發送當心「hello「)
此時由於你從新調用的程序，須要從新找到驗證碼並輸入.....
而後就能夠收到信息嘍......
(3) cd /usr/local/nagios/etc/objects/
vi templates.cfg

Generic contact definition template - This is NOT a real contact, just a template!

define contact{
name generic-contact ; The name of this contact template
.
.
.
service_notification_commands notify-service-by-email,notify-service-by-fetion ; send service notifications via email
host_notification_commands notify-host-by-email,notify-host-by-fetion ; send host notifications via email
..........................
}
(4) vi /usr/local/nagios/etc/objects/commands.cfg
增長如下內容：
# 'notify-host-by-fetion' command definition
define command{
command_name notify-host-by-fetion
command_line $USER1$/fetion.sh $CONTACTPAGER$ "$NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$"
}

# 'notify-service-by-fetion' command definition
define command{
command_name notify-service-by-fetion
command_line $USER1$/fetion.sh $CONTACTPAGER$ "$NOTIFICATIONTYPE$: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$"
}
（5）vi /usr/local/nagios/etc/objects/contacts.cfg

define contact{
.
.
.
email 997365139@qq.com ; <<***** CHANGE THIS TO YOUR EMAIL ADDRESS ******
pager 1509154xxxx(接收飛信信息的 手機號碼
)
}
（6）測試：
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
#校驗後從新載入 nagios 配置
/etc/init.d/nagios reload
此時你若把被監控端的： service mysqld stop此時會產生報警。而後下次檢測的時候你的 手機和郵箱會同時收到郵件和信息哦。。