nagios監控初級配置。

 #===========================安裝 Nagios    ========================================
groupadd nagios
groupadd nagios
useradd nagios -g nagios -d /usr/local/nagios 
chown nagios.nagios /usr/local/nagios/
chmod 755 /usr/local/nagios
wget http://osdn.dl.sourceforge.net/sourceforge/nagios/nagios-3.0.2.tar.gz
tar -zxvf nagios-3.0.2.tar.gz
cd nagios-3.0.2
./configure --with-command-group=nagcmd
make all
make install
make install-init
make install-config
make install-commandmode

創建一個web頁面登陸用戶，在htppasswd.users裏面可以看到用戶名。

/usr/local/apache2/bin/htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
#編輯httpd.conf配置文件
ScriptAlias /nagios/cgi-bin "/usr/local/nagios/sbin"

<Directory "/usr/local/nagios/sbin">
#  SSLRequireSSL
   Options ExecCGI
   AllowOverride None
   Order allow,deny
   Allow from all
#  Order deny,allow
#  Deny from all
#  Allow from 127.0.0.1
   AuthName "Nagios Access"
   AuthType Basic
   AuthUserFile /usr/local/nagios/etc/htpasswd.users
   Require valid-user
</Directory>

Alias /nagios "/usr/local/nagios/share"

<Directory "/usr/local/nagios/share">
#  SSLRequireSSL
   Options None
   AllowOverride None
   Order allow,deny
   Allow from all
#  Order deny,allow
#  Deny from all
#  Allow from 127.0.0.1
   AuthName "Nagios Access"
   AuthType Basic
   AuthUserFile /usr/local/nagios/etc/htpasswd.users
   Require valid-user
</Directory>

#重啓apache
killall httpd

 

#============================安裝nagios plugins=========================
wget plugins下載。
tar -zxvf nagios-plugins-1.4.11.tar.gz
cd nagios-plugins-1.4.11
./configure --prefix=/usr/local/nagios --with-nagios-user=nagios --with-nagios-gourp=nagios --with-mysql=/usr/local/mysql5/ --enable-perl-modules
make
make install

#配置和啓動nagios
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

#如果提示“Whoops!   Error: Could not read object configuration data! ”，這是因爲沒有啓動nagios後臺進程，執行以下命令
/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

#=============================安裝nrpe 插件==============================
#對遠程一臺linux主機進行監控
#監控服務器上安裝nrpe
wget http://www.mirrors.wiretapped.net/security/network-monitoring/nagios/nrpe-2.8.1.tar.gz
#監控主機上安裝方法
tar -zxvf nrpe-2.8.1.tar.gz
cd nrpe-2.8.1
./configure
make all
make install 
make install-plugin    ---監控機需要安裝check_nrpe這個插件,被監控機並不需要
##########################################################################
#被監控主機上安裝方法
useradd nagios -d /usr/local/nagios
chown nagios.nagios /usr/local/nagios/
tar -zxvf nagios-plugins-1.4.11.tar.gz
cd nagios-plugins-1.4.11
./configure --enable-perl-modules --with-ping-command=ping
make
make install

cd /opt
tar -zxvf nrpe-2.8.1.tar.gz
cd nrpe-2.8.1
./configure
make all
make install
make install-plugin
make install-daemon
make install-daemon-config

vi /usr/local/nagios/etc/nrpe.conf
allowed_hosts=192.168.8.150
#爲了監控swap在nrpe.cfg中添加
command[check_swap]=/usr/local/nagios/libexec/check_swap -w 20% -c 10%
command[check_sda1]=/usr/local/nagios/libexec/check_disk -w 20 -c 10 -p /dev/sda1
#sdb1可根椐實際情況更改，我這裏的硬盤類型是scsi

vi /etc/services 
#增加nrpe
nrpe            5666/tcp                        # nrpe
#啓動nrpe
/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d

netstat -at|grep nrpe
netstat -an|grep 5666

#############################################################################
#再對監控服務器進行設置
#添加nrpe的定義
vi /usr/local/nagios/etc/objects/commands.cfg 
# 'check_nrpe ' command definition
define command{
        command_name check_nrpe
        command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
        }

vi /usr/local/nagios/etc/cgi.cfg
把use_authentication=1修改爲use_authentication=0如果出現頁面無法顯示之類的
authorized_for_system_commands=nagiosadmin,kerry    --kerry爲http訪問授權用戶
authorized_for_all_services=nagiosadmin,kerry
authorized_for_all_hosts=nagiosadmin,kerry
authorized_for_all_service_commands=nagiosadmin,kerry
authorized_for_all_host_commands=nagiosadmin,kerry

#測試NRPE是否則正常工作
/usr/local/nagios/libexec/check_nrpe -H localhost

killall nagios
/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

echo "/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg –d"  >> /etc/rc.local
ehco "/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg" >>/etc/rc.local

#問題：notifications for this service have been disabled
#解決辦法：enable notifications for this service

#問題：Status Map頁面無法顯示
#解決方法：ln -s /usr/local/lib/libgd.so.2 /usr/lib/libgd.so.2

vi /usr/local/nagios/etc/nagios.cfg
#添加
cfg_file=/usr/local/nagios/etc/objects/emos-mailserver.cfg
#emos-mailserver.cfg這個文件名可以自定義

#對剛定義的emos-mailserver.cfg文件進行配置
vi /usr/local/nagios/etc/objects/emos-mailserver.cfg
define host{
           use          linux-server
          host_name     emos-mailserver
          alias         emos-mailserver
          address       192.168.8.151
        }
define service{
        use             generic-service
        host_name       emos-mailserver
        service_description     HTTP
        check_command     check_http
       }
define service{
        use             generic-service
        host_name       emos-mailserver
        service_description     SSH
        check_command   check_ssh
       }

define service{
        use             generic-service
        host_name       emos-mailserver
        service_description     SMTP
        check_command   check_smtp
       }

define service{
        use             generic-service
        host_name       emos-mailserver
        service_description     POP3
        check_command   check_pop
       }
#define service{
#        use             generic-service
#        host_name       emos-mailserver
#        service_description     mysql
#        check_command   check_mysql
#       }
define service{
        use             generic-service
        host_name       emos-mailserver
        service_description     check-swap
        check_command           check_nrpe!check_swap
        }
define service{
        use             generic-service
        host_name       emos-mailserver
        service_description     check-load
        check_command           check_nrpe!check_load

        }

define service{
        use             generic-service
        host_name       emos-mailserver
        service_description     check-disk
        check_command           check_nrpe!check_sda1
 }

define service{
        use             generic-service
        host_name       emos-mailserver
        service_description     zombie_procs
        check_command           check_nrpe!check_zombie_procs
        }

define service{
        use             generic-service
        host_name       emos-mailserver
        service_description     check-users
        check_command           check_nrpe!check_users
        }

define service{
        use             generic-service
        host_name       emos-mailserver
        service_description     total_procs
        check_command           check_nrpe!check_total_procs
#配置完後，重啓nagios
killall nagios
service nagios start
pstree |grep nagios

[url]http://192.168.8.150/nagios[/url]

 

 

#=============================安裝  pnp===============================================
cd /opt
tar zxvf pnp-0.4.12.tar.gz 
cd pnp-0.4.12
./configure --with-nagios-user=nagios \ 
--with-nagios-group-nagios \ 
--with-rrdtool=/usr/local/rrdtool/bin/rrdtool \ 
--with-perfdata-dir=/usr/local/nagios/share/perfdata 
make 
make all 
make install 
make install-config 
make install-init

#錯誤提示：RRDs Perl Modules:                *** NOT FOUND ***
#解決方法：ln -sv /usr/local/rrdtool/lib/perl/5.8.8/i386-linux-thread-multi/auto/RRDs/RRDs.so /usr/lib/perl5/5.8.8/i386-linux-thread-multi/

#要產生圖形數據還需在commands.cfg中重定義命令： 
define command{ 
command_name process-service-perfdata 
command_line /usr/local/nagios/libexec/process_perfdata.pl 
} 

#產生圖形數據還要設定nagios.cfg文件： 
process_performance_data=1 
service_perfdata_command=process-service-perfdata 

[url]http://192.168.8.150/nagios/pnp/[/url]

 

 

#==========================監控遠程windows主機==================================
#監控windows服務器
wget [url]http://nchc.dl.sourceforge.net/sourceforge/nscplus/NSClient++-Win32-0.3.5.zip[/url]
解壓nsclient++0.3.3.zip到c盤根目錄

解壓爲C:\NSClient++

 

#在nagios監控服務器上
vi /usr/local/nagios/etc/nagios.cfg
cfg_file=/usr/local/nagios/etc/objects/windows.cfg 去掉這句話的註釋

 

#到win服務器上，打開命令窗口，cd到剛纔解壓的目錄

#在命令行界面執行 nsclient++ /install

#然後 nsclient++  SysTray 如果出錯不用管！

#此時在“服務”裏面已經有了nsclient的服務

雙擊打開,點"登錄"標籤,在"允許服務與桌面交互"前打勾

#編輯NES.ini，在 [modules] 選項裏，去掉所有的註釋符號； 除了 
CheckWMI.dll和RemoteConfiguration.dll

#the [Settings] 選項裏

修改allowd_host=192.168.8.150(nagios服務器的ip) 
#[NSClient] 裏面，去掉port=12489的註釋！他靠端口12489偵聽，所以防火牆要打開這個端口！

在[Settings]部分設置'password'選項來設置密碼,作用是在nagios連接過來時要求提供密碼.這一步是可選的,我這裏方便起見跳過它,不要密碼.

#然後啓動nsclient
nsclient++ /start

#接下來我們開始配置nagios服務器裏面的內容
vi /usr/local/nagios/etc/objects/windows.cfg
define host{ 
    use windows-server
    host_name winserver alias
    My Windows Server 
    address 192.168.8.151   --windows服務器的IP地址 
    }
#修改hostname和address，很重要！！
#重新啓動監控服務器上的nagios
killall nagios
service nagios start

#==============================安裝  sengEmail ==================================
#使用sendEmail發送報警郵件
cd /opt
wget [url]http://caspian.dotconf.net/menu/Software/SendEmail/sendEmail-v1.55.tar.gz[/url]
tar -zxvf sendEmail-v1.55.tar.gz
cd sendEmail-v1.55
cp sendEmail /usr/local/bin
chmod +x /usr/local/bin/sendEmail
#sendEmail使用方法
/usr/local/bin/sendEmail –f [email protected] –t [email protected] –s mail.3aaa.com –u “from nagios” –xu [email protected] –xp 11111 –m happy
#解釋:-f 表示發送者的郵箱
     -t 表示接收者的郵箱
     -s 表示SMTP服務器的域名或者ip
     -u 表示郵件的主題
     -xu 表示SMTP驗證的用戶名
     -xp 表示SMTP驗證的密碼(注意,這個密碼貌似有限制,例如我用d!5neyland就不能被正確識別)
     -m 表示郵件的內容如果你不帶-m參數的話,就會提示你自行輸入

#編輯配置文件，nagios使用sendEmail來發警告郵件
vi /usr/local/nagios/etc/objects/commands.cfg
# 'notify-host-by-email' command definition
define command{
 command_name notify-host-by-email
 command_line /usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$\nState: $HOSTSTATE$\nAddress: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time: $LONGDATETIME$\n" | /usr/local/bin/sendEmail –f [email protected] –t $CONTACTEMAIL$ –s mail.3aaa.com –u "** $NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$ **" –xu[email protected] –xp 11111
 }

# 'notify-service-by-email' command definition
define command{
 command_name notify-service-by-email
 command_line /usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\n\nService: $SERVICEDESC$\nHost: $HOSTALIAS$\nAddress: $HOSTADDRESS$\nState: $SERVICESTATE$\n\nDate/Time: $LONGDATETIME$\n\nAdditional Info:\n\n$SERVICEOUTPUT$" | /usr/local/bin/sendEmail –f [email protected] –t $CONTACTEMAIL$ –s mail.3aaa.com –u "** $NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" –xu[email protected] –xp 111111
 }

#注：在使用sendEmail的過程中無法發送報警郵件，不知是什麼原因，只好改用系統自帶的sendmail發郵件！！