實戰Nagios NSCA方式監控Linux系統資源使用方式，nagiosnsca

實戰Nagios NSCA方式監控Linux系統資源使用方式，nagiosnsca
關於nrpe的方式網上已經有很多很好的總結，我現在說說在我們系統中如何是用NSCA方式來擷取我們需要的被監控節點的資源使用方式資訊。
先講講Nagios Server端的基本配置：

1. nagios web gui 訪問配置，系統中使用的是nagios core中推薦的配置方式，通過apache httpd訪問nagios web，安裝nagios的時候會自動尋找系統中安裝的httpd，把nagios的httpd檔案放到httpd的conf.d目錄下，這樣，只要產生一次nagios web訪問的密碼就可以通過http://localhost/nagios/訪問nagios web.

htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin

2. 添加要監控的機器和要監控的服務2.1  /usr/local/nagios/etc/nagios.cfg: 增加要配置的OBJECT CONFIGURATION FILEs

cfg_file=/usr/local/nagios/etc/objects/localhost.cfgcfg_file=/usr/local/nagios/etc/objects/system_1.cfg

cfg_file=/usr/local/nagios/etc/objects/system_2.cfg 
......
nagios_user=nagios
nagios_group=nagios
lock_file=/usr/local/nagios/var/nagios.lock
status_update_interval=10

2. 2添加被監聽節點需要被監聽的服務，例如：/usr/local/nagios/etc/objects/system_1.cfg

## define hosts

# system_1 oam_1define host{        use                     linux-server,host-pnp        host_name               system_1_oam_1        address                 <ip>contact_groupssystem_1_admins,systems_admins        }......# system_1 traffic_1define host{        use                     linux-server,host-pnp        host_name               system_1_traffic_1        address                 <ip>contact_groupssystem_1_admins,systems_admins        }...... 

## define services
# system_1 oam_1define service{        use                      passive_service,srv-pnp        service_description      CPU_Status        host_name                system_1_oam_1contact_groups system_1_admins,systems_admins        }define service{        use                      passive_service,srv-pnp        service_description      Memory_Status        host_name                system_1_oam_1contact_groups system_1_admins,systems_admins        }......# system_1 traffic_1define service{        use                      passive_service,srv-pnp        service_description      CPU_Status        host_name                system_1_traffic_1contact_groups system_1_admins,systems_admins        }

Note:
host-pnp和srv-pnp是pnp4nagios要用的配置，後面再介紹pnp4nagios的其它配置
3. 對不同的系統添加系統監控管理員
3.1 /usr/local/nagios/etc/objects/contactgroups.cfg

define contactgroup{        contactgroup_name       system_1_admins        alias                   system_1_admins        members                 oam-1,traffic-1        }......

3.2 /usr/local/nagios/etc/objects/contacts.cfg

define contact{        contact_name                    oam-1                  ; Short name of user        use                             generic-contact         ; Inherit default values from generic-contact template (defined above)        alias                           oam-1                  ; Full name of user        service_notification_options    c                              host_notification_options       d        email                           nobody@localhost.com   ; <<***** CHANGE THIS TO YOUR EMAIL ADDRESS ******        }define contact{        contact_name                    traffic-1           ; Short name of user        use                             generic-contact         ; Inherit default values from generic-contact template (defined above)        alias                           traffic-1           ; Full name of user        email                           nobody@localhost.com  ; <<***** CHANGE THIS TO YOUR EMAIL ADDRESS ******        }...... 

Note:
service_notification_options： This directive is used to define the service states for which notifications can be sent out to this contact. Valid options are a combination of one or more of the following: w = notify on WARNING service states, u = notify on UNKNOWN service states, c = notify on CRITICAL service states, r = notify on service recoveries (OK states), and f = notify when the service starts and stopsflapping. If you specify n (none) as an option, the contact will not receive any type of service notifications.
host_notification_options:This directive is used to define the host states for which notifications can be sent out to this contact. Valid options are a combination of one or more of the following: d = notify on DOWN host states, u = notify on UNREACHABLE host states, r = notify on host recoveries (UP states), f = notify when the host starts and stopsflapping, and s = send notifications when host or servicescheduled downtime starts and ends. If you specify n (none) as an option, the contact will not receive any type of host notifications.
4. NSCA如果沒有連接埠衝突之類的問題，直接使用預設配置
5. 查看Nagios GUI中新加的host和service已經存在，狀態UNKNOWN.
6. 添加pnp4nagios bulk+npcd 模式監聽系統
6.1 修改/usr/local/nagios/etc/nagios.cfg

#處理performance資料process_performance_data=1#host_perfdata_command=process-host-perfdata#service_perfdata_command=process-service-perfdata#performance資料存放區檔案host_perfdata_file=/usr/local/pnp4nagios/var/host-perfdataservice_perfdata_file=/usr/local/pnp4nagios/var/service-perfdata#performance資料存放區格式host_perfdata_file_template=DATATYPE::HOSTPERFDATA\tTIMET::$TIMET$\tHOSTNAME::$HOSTNAME$\tHOSTPERFDATA::$HOSTPERFDATA$\tHOSTCHECKCOMMAND::$HOSTCHECKCOMMAND$\tHOSTSTATE::$HOSTSTATE$\tHOSTSTATETYPE::$HOSTSTATETYPE$service_perfdata_file_template=DATATYPE::SERVICEPERFDATA\tTIMET::$TIMET$\tHOSTNAME::$HOSTNAME$\tSERVICEDESC::$SERVICEDESC$\tSERVICEPERFDATA::$SERVICEPERFDATA$\tSERVICECHECKCOMMAND::$SERVICECHECKCOMMAND$\tHOSTSTATE::$HOSTSTATE$\tHOSTSTATETYPE::$HOSTSTATETYPE$\tSERVICESTATE::$SERVICESTATE$\tSERVICESTATETYPE::$SERVICESTATETYPE$\tSERVICEOUTPUT::$SERVICEOUTPUT$#performance檔案儲存體方式host_perfdata_file_mode=aservice_perfdata_file_mode=a#performance檔案處理時間間隔host_perfdata_file_processing_interval=15service_perfdata_file_processing_interval=15<pre name="code" class="plain">#performance檔案處理命令

host_perfdata_file_processing_command=process-host-perfdata-fileservice_perfdata_file_processing_command=process-service-perfdata-file

6.2 修改/usr/local/nagios/etc/objects/commands.cfg，增加performance檔案處理命令

define command{       command_name    process-service-perfdata-file       command_line    /bin/mv /usr/local/pnp4nagios/var/service-perfdata /usr/local/pnp4nagios/var/spool/service-perfdata.$TIMET$}define command{       command_name    process-host-perfdata-file       command_line    /bin/mv /usr/local/pnp4nagios/var/host-perfdata /usr/local/pnp4nagios/var/spool/host-perfdata.$TIMET$}

6.3 修改nagios.cfg，設定在nagios web gui中顯示pnp4nagios表徵圖的方式

第一種方法在templates.cfg裡面加入如下，只能在新視窗開啟映像資料

define host {  name       host-pnp  action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=_HOST_  register   0 }define service {  name       srv-pnp  action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=$SERVICEDESC$  register   0 } 

第二種方法可以在滑鼠移到pnp4nagios表徵圖的時候就可以開到即時表徵圖，不過效果不是很好，按照說明加入如下：

拷貝status-header.ssi到/usr/local/nagios/share/ssi/目錄下面，同時修改templates.cfg，加入如下內容：

define host {     name       host-pnp     action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=_HOST_' class='tips' rel='/pnp4nagios/index.php/popup?host=$HOSTNAME$&srv=_HOST_     register   0 }define service {     name       srv-pnp     action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=$SERVICEDESC$' class='tips' rel='/pnp4nagios/index.php/popup?host=$HOSTNAME$&srv=$SERVICEDESC$     register   0 } 

Note: 自動出現的小視窗清晰度不好，我喜歡第一種方式

Note: 這裡沒有涉及email的配置，記得通知設計的時候小心訊息泛濫被投訴。。。

第一篇： Nagios 使用介紹

第三篇： Nagios monitored Client配置和指令碼實現

問怎正確使用nagios服務，實現對Linux伺服器監控，並且不需要在被控端做任何設定，該怎實現？

nagios是目前非常流行的系統，伺服器監控免費軟體，很多大的國內網站像搜狐，網易都在使用nagios進行伺服器監控。
nagios的有點在於他本身只是一個架構，對於nagios擴充監控模組，以及警示模組非常方便，能很方便的加入自己編寫的服務監控，以及手機簡訊，郵件，gtalk ,msn警示等等。
以下是nagios在linux REDHAT AS4U4 下的安裝和簡單的配置過程：
下載軟體：
wget
wget
wget
添加使用者：

useradd -m nagios
passwd nagios
groupadd nagcmd
usermod -G nagcmd nagios
usermod -G nagcmd daemon

編譯安裝nagios
tar -xvzf nagios-3.0.3.tar.gz
cd nagios-3.0.3
./configure --with-command-group=nagcmd
make all
make install
make install-init
make install-config
make install-commandmode
設定apache伺服器訪問密碼：
cd /usr/local/nagios/etc/
/usr/local/apache/bin/htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
cd /usr/local/apache/conf/
vi httpd-vhosts.conf
配置apache的cgi ，具體配置如下：
ScriptAlias /nagios/cgi-bin /usr/local/nagios/sbin
<Directory "/usr/local/nagios/sbin">
Options ExecCGI
AllowOverride None
Order allow,deny
Allow from all
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">
Options None
AllowOverride None
Order allow,deny
Allow from all
AuthName "Nagios Access"
AuthType Basic
AuthUserFile /usr/local/nagios/etc/htpasswd.users
Require valid-us......餘下全文>>
 
怎用 nagios 監控 linux 系統 io 使用方式

如果預設指令碼沒有的話，就自己寫指令碼吧