nagios 監控筆記(二)

時間 2020-03-20

標籤 nagios 監控筆記简体版

原文原文鏈接

4、nagios服務端配置與啓動

1）、文件說明

nagios.cfg                    #nagios主配置文件
cgi.cfg                          #cgi配置文件
commands.cfg            #命令配置文件
contacts.cfg               #聯繫人配置文件
resource.cfg               #定義插件路徑文件
templates.cfg、timeperiods.cfg 組，監控時間段等配置文件
linux.cfg                      #用戶自定義文件，監控linux主機,定義主機配置文件
windows.cfg              #用戶自定義文件，監控windows主機,定義主機配置文件
l-services.cfg             #用戶自定義文件，定義linux主機服務配置文件
w-services.cfg          #用戶自定義文件，定義windows主機服務配置文件

2)、cgi.cfg文件配置

root@nagios#cd /usr/local/nagios/etc
vi    cgi.cfg                #如下是須要修改的地方
authorized_for_system_information=nagiosadmin,test
authorized_for_configuration_information=nagiosadmin,test
authorized_for_system_commands=nagiosadmin,test
authorized_for_all_services=nagiosadmin,test
authorized_for_all_hosts=nagiosadmin,test     authorized_for_all_service_commands=nagiosadmin,test     authorized_for_all_host_commands=nagiosadmin,test
use_authentication=0

#修改成0,否則監控訪問的時候會出現如下提示

It appears as though you do not have permission to view information for any of the hosts you requested...

If you believe this is an error, check the HTTP server authentication requirements for accessing this CGI
and check the authorization options in your CGI configuration file.

3)、配置nagios.cfg文件

cfg_file=/usr/local/nagios/etc/objects/commands.cfg
cfg_file=/usr/local/nagios/etc/objects/contacts.cfg
cfg_file=/usr/local/nagios/etc/objects/timeperiods.cfg
cfg_file=/usr/local/nagios/etc/objects/templates.cfg

# wb config
cfg_dir=/usr/local/nagios/etc/linux #配置linux主機加載自定義文件的目錄(下面包括linux.cfg、l-services.cfg文件)
cfg_dir=/usr/local/nagios/etc/windows #配置win主機加載自定義文件的目錄(包括windows.cfg、w-services.cfg)

4)、配置commands.cfg命令配置文件

define command{
                command_name check_nrpe
                command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
                }

define command{
        command_name check_mysql_health #定義mysql監控命令        command_line $USER1$/check_mysql_health --hostname $ARG1$ --port $ARG2$ --username $ARG3$ --password $ARG4$ --mode $ARG5$
        }
define command{
        command_name notify-service-by-sms #定義飛信監控命令        command_line /usr/local/tools/install/fetion --mobile=159230***** --pwd=2255*** --to=$CONTACTPAGER$ --msg-gb="$HOSTNAME$ $SERVICEDESC$ is $SERVICESTATE$ on $TIME$ result is $SERVICEOUTPUT$" $CONTACTPAGER$
}
notify-host-by-email、notify-service-by-email這二項是定義mail報警的命令，默認文件有這二項

5)、配置contacts.cfg聯繫人配置文件

define contact{
contact_name nagiosadmin

use generic-contact

alias Nagios Admin

     service_notification_period          24x7
     host_notification_period            24x7
     service_notification_options     w,u,c,r
     host_notification_options            d,u,r
     service_notification_commands     notify-service-by-email,notify-service-by-sms
     host_notification_commands            notify-host-by-email
   email                             [email]test@test.com[/email],[email]test@163.com[/email]

pager 1592304****
}

#email 定義聯繫人報警mail地址

#pager 定義聯繫人報警手機號碼

#notify-service-by-email、notify-service-by-sms、notify-host-by-email、要與commands.cfg命令配置文件裏的相對應

6)、linux.cfg主機配置文件

#====================linux server=====================
define host{
                use                        generic-host
                host_name                cvs-1.11
                alias                         cvs-server
                address                     192.168.1.11
                check_command          check-host-alive
                max_check_attempts            10
                check_period                        24x7
                notification_interval               20
                notification_period                24x7
                notification_options                d,r
                contact_groups    admins
                 name                         cvs-1.11 #定義名字
                }
define host{
                use                           generic-host

                host_name                   web-1.72
                alias                            web-server
                address                        192.168.1.72
                use                              cvs-1.11 #調用cvs-1.11的配置
                }

7)、windows.cfg配置文件

##############windows host################

define host{
                use                           generic-host
                host_name                 windows-1.8
                alias                          win-server
                address                      192.168.1.8
                check_command          check-host-alive
                max_check_attempts             10
                check_period                        24x7
                notification_interval               20
                notification_period                24x7
                notification_options                d,r
                contact_groups    admins
                 name                          windows-1.8 #定義名字
                }
define host{
                use                  generic-host

                host_name        windows-1.71
                alias                 web-server
                address            192.168.1.71
                use                  windows-1.8 #調用windows-1.8配置文件
                }

8)、l-services.cfg定義服務配置文件

define service{
                use                                 generic-service
                host_name                       cvs-1.11 #與l-linux.cfg主機服務的名字相對應
                service_description              HTTP    status
                is_volatile                            0 #相似聲音警告功能關閉
                check_period                       24x7 #監控期限爲24X7
                max_check_attempts              3 #最大檢測3次
                normal_check_interval             1   #每一分鐘檢測一次
                retry_check_interval               1  #間隔1分鐘檢測
                contact_groups                       admins #監控組
                notification_options                  w,u,c,r # w,u,c,r 發生這四種狀況時，進行通告
                notification_interval                  5 # 通告間隔
                notification_period                    24x7 #檢測時間段
                check_command                       check_http
                }

check_command監控命令有

check-host-alive、check_nrpe!check_disk一、check_nrpe!check_load、check_nrpe!check_total_procs、check_nrpe!check_swap等

9)、w-services.cfg配置文件

define service{
                use                                  generic-service
                host_name                        windows-1.8
                service_description         NSClient++ Version
                is_volatile                                 0
                check_period                             24x7
                max_check_attempts                  3
                normal_check_interval                 1
                retry_check_interval                   1
                contact_groups                          admins
                notification_options                     w,u,c,r
                notification_interval                     5
                notification_period                       24x7
                check_command             check_nt!CLIENTVERSION
                }

define service{
        use                       generic-service
        host_name               windows-1.8
        service_description     E:\ Drive Space
        is_volatile                     0
        check_period                 24x7
        max_check_attempts       3
        normal_check_interval      1
        retry_check_interval        1
        contact_groups               admins
        notification_options          w,u,c,r
        notification_interval           5
        notification_period             24x7
        check_command           check_nt!USEDDISKSPACE!-l e -w 80 -c 90
        }

# 若是要監控c 盤，check_nt!USEDDISKSPACE!-l c -w 80 -c 90 這裏的c表示是c盤

check_command命令有

check_nt!UPTIME、check_nt!MEMUSE!-w 80 -c 90、(-w 80 -c 90)爲當內存使用到80%爲warning警告，內存使用到90%爲critical緊急，check_nt!USEDDISKSPACE!-l c -w 80 -c 90、check_nt!PROCSTATE!-d SHOWALL -l Explorer.exe等。

10)、linux 客戶端的安裝配置與啓動

    tar zxvf nrpe-2.8.1.tar.gz
    cd nrpe-2.8.1
   ./configure –prefix=/usr/local/nrpe
    make
    make install

10.1)、添加nagios用戶組，並設置權限

root@client#useradd nagios -s /sbin/nologin

chown -R nagios.nagios /usr/local/nrpe

10.2）、須要把nagios監控服務器裏的/usr/local/nagios/libexec下面的5個文件cp到 /usr/local/nrpe/libexec目錄下

cp /usr/local/nrpe/libexec/check_nrpe     /usr/local/nagios/libexec
cp /usr/local/nagios/libexec/check_disk    /usr/local/nrpe/libexec
cp /usr/local/nagios/libexec/check_load    /usr/local/nrpe/libexec
cp /usr/local/nagios/libexec/check_ping    /usr/local/nrpe/libexec
cp /usr/local/nagios/libexec/check_procs   /usr/local/nrpe/libexec

10.3）、配置nrpe.cfg文件

mkdir /usr/local/nrpe/etc 建立目錄

複製nrpe解壓目錄下的nrpe.cfg文件以 /usr/local/nrpe/etc目錄下

cp /root/nrpe/nrpe.cfg /usr/local/nrpe/etc

修改nrpe.cfg文件

server_port=5666 #端口
server_address=192.168.1.56 #服務器IP
allowed_hosts=127.0.0.1,192.168.1.56 #充許nagios服務器IP訪問

10.4)啓動nrpe服務

10.4.1)、以獨立守護進程啓動nrpe服務

/usr/local/nrpe/bin/nrpe –c /usr/local/nrpe/etc/nrpe.cfg -d

10.4.2)、檢測nrpe服務是否正常啓動

[root@nagios nrpe]# netstat -nltp | grep nrpe
tcp 0 0 192.168.1.56:5666 0.0.0.0:* LISTEN 2233/nrpe

能查看到5666這端口，說明nrpe啓動正常