چگونه به کمک افزونه NRPE هاست لینوکس را به سرور مانیتورینگ Nagios اضافه کنیم؟

<br /> # yum install -y gcc glibc glibc-common gd gd-devel make net-snmp openssl-devel</p> <p>————– On Fedora 22+ Onwards ————–</p> <p># dnf install -y gcc glibc glibc-common gd gd-devel make net-snmp openssl-devel

<br /> # useradd nagios</p> <p># passwd nagios

<br /> # wget https://www.nagios-plugins.org/download/nagios-plugins-2.1.2.tar.gz

<br /> # tar -xvf nagios-plugins-2.1.2.tar.gz

<br /> # ls -l</p> <p>total 2640</p> <p>drwxr-xr-x. 15 root root    ۴۰۹۶ Aug  ۱ ۲۱:۵۸ nagios-plugins-2.1.2</p> <p>-rw-r–r–.  ۱ root root 2695301 Aug  ۱ ۲۱:۵۸ nagios-plugins-2.1.2.tar.gz

<br /> # cd nagios-plugins-2.1.2</p> <p># ./configure</p> <p># make</p> <p># make install

<br /> # chown nagios.nagios /usr/local/nagios</p> <p># chown -R nagios.nagios /usr/local/nagios/libexec

<br /> # yum install xinetd</p> <p>————– On Fedora 22+ Onwards ————–</p> <p># dnf install xinetd

<br /> # cd /root/nagios</p> <p># wget https://github.com/NagiosEnterprises/nrpe/releases/download/nrpe-3.2.1/nrpe-3.2.1.tar.gz

<br /> # tar xzf nrpe-3.2.1.tar.gz</p> <p># cd nrpe-3.2

<br /> # ./configure</p> <p># make all

<br /> # make install-plugin</p> <p># make install-daemon</p> <p># make install-daemon-config

<br /> # make install-xinetd</p> <p>OR</p> <p># make install-inetd

<br /> only_from = 127.0.0.1 localhost <nagios_ip_address>

<br /> nrpe            ۵۶۶۶/tcp                 NRPE

<br /> # netstat -at | grep nrpe</p> <p>tcp        ۰      ۰ *:nrpe                      *:*                         LISTEN

<br /> # /usr/local/nagios/libexec/check_nrpe -H localhost

<br /> ————– On RHEL/CentOS 6/5 and Fedora ————–</p> <p># iptables -A INPUT -p tcp -m tcp –dport 5666 -j ACCEPT</p> <p>————– On RHEL/CentOS 7 and Fedora 19 Onwards ————–</p> <p># firewall-cmd –permanent –zone=public –add-port=5666/tcp

<br /> ————– On RHEL/CentOS 6/5 and Fedora ————–</p> <p># service iptables save

<br /> # vi /usr/local/nagios/etc/nrpe.cfg

<br /> # /usr/local/nagios/libexec/check_nrpe -H localhost -c check_users</p> <p>USERS OK – 1 users currently logged in |users=1;5;10;0</p> <p># /usr/local/nagios/libexec/check_nrpe -H localhost -c check_load</p> <p>OK – load average: 3.90, 4.37, 3.94|load1=3.900;15.000;30.000;0; load5=4.370;10.000;25.000;0; load15=3.940;5.000;20.000;0;</p> <p># /usr/local/nagios/libexec/check_nrpe -H localhost -c check_hda1</p> <p>DISK OK – free space: /boot 154 MB (84% inode=99%);| /boot=29MB;154;173;0;193</p> <p># /usr/local/nagios/libexec/check_nrpe -H localhost -c check_total_procs</p> <p>PROCS CRITICAL: 297 processes</p> <p># /usr/local/nagios/libexec/check_nrpe -H localhost -c check_zombie_procs</p> <p>PROCS OK: 0 processes with STATE = Z

<br /> # cd /root/nagios</p> <p># wget https://github.com/NagiosEnterprises/nrpe/releases/download/nrpe-3.2.1/nrpe-3.2.1.tar.gz

<br /> # tar xzf nrpe-3.2.1.tar.gz</p> <p># cd nrpe-3.2

<br /> # ./configure</p> <p># make all</p> <p># make install-daemon

<br /> # /usr/local/nagios/libexec/check_nrpe -H <remote_linux_ip_address>

<br /> # cd /usr/local/nagios/etc/</p> <p># touch hosts.cfg</p> <p># touch services.cfg

<br /> # vi /usr/local/nagios/etc/nagios.cfg

<br /> # You can specify individual object config files as shown below:</p> <p>cfg_file=/usr/local/nagios/etc/hosts.cfg</p> <p>cfg_file=/usr/local/nagios/etc/services.cfg

<br /> # vi /usr/local/nagios/etc/hosts.cfg</p> <p>## Default Linux Host Template ##</p> <p>define host{</p> <p>name                            linux-box               ; Name of this template</p> <p>use                             generic-host            ; Inherit default values</p> <p>check_period                    ۲۴x7       </p> <p>check_interval                  ۵      </p> <p>retry_interval                  ۱      </p> <p>max_check_attempts              ۱۰     </p> <p>check_command                   check-host-alive</p> <p>notification_period             ۲۴x7   </p> <p>notification_interval           ۳۰     </p> <p>notification_options            d,r    </p> <p>contact_groups                  admins </p> <p>register                        ۰                       ; DONT REGISTER THIS – ITS A TEMPLATE</p> <p>}</p> <p>## Default</p> <p>define host{</p> <p>use                             linux-box               ; Inherit default values from a template</p> <p>host_name                       tecmint                    ; The name we’re giving to this server</p> <p>alias                           CentOS 6                ; A longer name for the server</p> <p>address                         ۵٫۱۷۵٫۱۴۲٫۶۶            ; IP address of Remote Linux host</p> <p>}

<br /> # vi /usr/local/nagios/etc/services.cfg</p> <p>define service{</p> <p>use                     generic-service</p> <p>host_name               tecmint</p> <p>service_description     CPU Load</p> <p>check_command           check_nrpe!check_load</p> <p>}</p> <p>define service{</p> <p>use                     generic-service</p> <p>host_name               tecmint</p> <p>service_description     Total Processes</p> <p>check_command           check_nrpe!check_total_procs</p> <p>}</p> <p>define service{</p> <p>use                     generic-service</p> <p>host_name               tecmint</p> <p>service_description     Current Users</p> <p>check_command           check_nrpe!check_users</p> <p>}</p> <p>define service{</p> <p>use                     generic-service</p> <p>host_name               tecmint</p> <p>service_description     SSH Monitoring</p> <p>check_command           check_nrpe!check_ssh</p> <p>}</p> <p>define service{</p> <p>use                     generic-service</p> <p>host_name               tecmint</p> <p>service_description     FTP Monitoring</p> <p>check_command           check_nrpe!check_ftp</p> <p>}

<br /> # vi /usr/local/nagios/etc/objects/commands.cfg

<br /> ###############################################################################</p> <p># NRPE CHECK COMMAND</p> <p>#</p> <p># Command to use NRPE to check remote host systems</p> <p>###############################################################################</p> <p>define command{</p> <p>command_name check_nrpe</p> <p>command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$</p> <p>}

<br /> # /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg</p> <p>Total Warnings: 0</p> <p>Total Errors:   ۰