Debian System installs Nagios server monitoring side

2. Installation
   Apt-get Update
   Apt-get Install nagios* Perl
   Apt-get Install--no-install-recommends Pnp4nagios
   Apt-get Install apache2 apache2-utils php5 php-pear

4. Modify NPCD Settings
   # VIM/ETC/DEFAULT/NPCD
   Run= "Yes"
   # service NPCD Start

6. Add process_perfdata.pl Execute Permissions
   chmod +x/usr/lib/pnp4nagios/libexec/process_perfdata.pl
7. Modify COMMANDS.CFG settings (Comment old command)
   Vi/etc/nagios3/commands.cfg
   

   #'Process-host-perfdata'command definitiondefine command{command_name process-host-PerfData #command_line/usr/bin/printf"%b" "$LASTHOSTCHECK $\t$hostname$\t$hoststate$\t$hostattempt$\t$hoststatetype$\t$hostexecutiontime$\t$hostoutput $\t$hostperfdata$\n">>/var/lib/nagios3/host-perfdata.out command_line/usr/bin/Perl/usr/lib/pnp4nagios/libexec/process_perfdata.pl}#'Process-service-perfdata'command definitiondefine command{command_name process-service-PerfData #command_line/usr/bin/printf"%b" "$LASTSERVICECHECK $\t$hostname$\t$servicedesc$\t$servicestate$\t$serviceattempt$\t$servicestatetype$\t$ serviceexecutiontime$\t$servicelatency$\t$serviceoutput$\t$serviceperfdata$\n">>/var/lib/nagios3/service-perfdata.out command_line/usr/bin/Perl/usr/lib/pnp4nagios/libexec/process_perfdata.pl}

   commands.cfg Code
9. Modifying the NAGIOS.CFG configuration
   Vi/etc/nagios3/nagios.cfg Modify the following 3 line configurations
   Process_performance_data=1
   Host_perfdata_command=process-host-perfdata
   Service_perfdata_command=process-service-perfdata
   Modify Check_external_commands=1 (unmodified may cause Web sites to fail to re-schedule monitoring items)
   Modify Enable_flap_detection=0 (although the document says the default is 0, but actually 1. Changed to 0 to resolve flapping state)
11. Modifying the SERVICES_NAGIOS2.CFG configuration
    Vi/etc/nagios3/conf.d/services_nagios2.cfg
    Notification_interval 1
    Vi/etc/nagios3/conf.d/generic-service_nagios2.cfg
    Notification_interval 1

13. Delete install.php
    # cd/usr/share/pnp4nagios/html
    # MV Install.php Install.php.bak

15. Nagios plug-in directory:/usr/lib/nagios/plugins/
16. Add Pnp4nagios Plugin
    VI/ETC/NAGIOS3/CONF.D/PNP4NAGOS.CFG Append the following configuration
    

    Define host {name host-PnP Action_url/pnp4nagios/index.php/graph?host= $HOSTNAME $'class='Tips'rel='/pnp4nagios/index.php/popup?host= $HOSTNAME $&srv=_host_ Register0Process_perf_data1}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 $ register0Process_perf_data1}

    Code
17. The default is no monitoring memory, if you need to monitor the replication check_mem.sh file to the plug-in directory, and then add the relevant configuration file
    Adding Custom execution commands
    Vi/etc/nagios3/conf.d/custom_commond.cfg
    

    define command{        command_name        check_mem        command_line        $USER 1$/check_mem.  SH -w $ARG 1$-c $ARG 2$        }

    CodeAdd the Check_mem service for this machine
    Vi/etc/nagios3/conf.d/localhost_nagios2.cfg Add the following configuration
    

    define service{        use                             local-service,srv-pnp        host_name                       localhost        service_ Description             check_mem        check_command                   check_mem!  A.  -         }

    Code
18. Monitor server network card traffic
    Apt-get Install SNMPD Snmp-mibs-downloader
    Vi/etc/snmp/snmpd.conf (can back up snmpd.conf, modify the following localhost-ip as the server IP, save this file)
    

    Com2sec Notconfiguser127.0.0.1Public com2sec notconfiguser localhost-IP Public Group Notconfiggroup v1 notconfiguser Group Notconfiggroup v2c notconfiguser View SystemView included.1.3.6.1.2.1.1view SystemView included.1.3.6.1.2.1.2view SystemView included.1.3.6.1.2.1.25.1.1view all included.1Access Notconfiggroup""Any noauth exact all none none

    Code

    Restart SNMPD Service
    Download check_traffic.sh to plugin directory
    cd/usr/lib/nagios/plugins/
    Test execution
    ./check_traffic.sh-v 2c-c public-h your_ip-i 2-w 1200,1500-c 1700,1800-k-B
    # vi/etc/nagios3/conf.d/custom_commond.cfg Append

    define command{        command_name    check_traffic        command_line    $USER 1$/check_traffic.  SH -v 2c-c public-h $HOSTADDRESS $-I $ARG 1$-w $ARG 2$-C $ARG 3$-M-B}

    Code

20. When the service stops re-monitoring fails, run the following 2-line command
    # dpkg-statoverride--update--add nagios www-data 2710/VAR/LIB/NAGIOS3/RW
    # dpkg-statoverride--update--add nagios www-data 751/var/lib/nagios3

22. Configure the Send mail feature
    Apt-get install SSMTP   (standby: Apt-get install Sendmail-bin  sendmail)
    Modify ssmpt.conf file configuration
    # vi/etc/ssmtp/ssmtp.conf   Add Google Mailbox configuration (do not turn on 2-step verification)
    

     authuser= =passwordfromlineoverride  = yesmailhub  =smtp.gmail.com:usestarttls  =yes 

    code

    Service SendMail Stop
    Chkconfig sendmail off
    Cd/usr/sbin
    MV sendmail sendmail.bak
    Ln-s/usr/sbin/ssmtp/usr/sbin/sendmail
    Test outgoing messages

24. Attention required to add monitored machines
    To monitor other hosts, you need to add the Check_nrpe command, but in the Debian system, the Add Check_nrpe command prompts you to repeat it, but you cannot find any configuration elsewhere.
    So you need to change Check_nrpe to another name.
    

    define command{        command_name Custom_check_nrpe        command_line $USER 1$/check_nrpe-h $HOSTADDRESS $- c $ARG 1$        }

    Code

Debian System installs Nagios server monitoring side