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tutorial:adm:server_monitoring [2019/03/25 11:27]
fiserp [Monitoring of server with CzechIdM] 		tutorial:adm:server_monitoring [2019/03/25 11:29]
fiserp [Implementation]
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 yum install nrpe nagios-plugins-nrpe nagios-plugins-swap nagios-plugins-disk nagios-plugins-load nagios-plugins-procs nagios-plugins-ntp nagios-plugins-http nagios-plugins-pgsql yum install nrpe nagios-plugins-nrpe nagios-plugins-swap nagios-plugins-disk nagios-plugins-load nagios-plugins-procs nagios-plugins-ntp nagios-plugins-http nagios-plugins-pgsql
 </code> </code>
-If you use SELinux, we need to permit the check_disk plugin access to the ''/sys/kernel/...''. Easiest way (but not necessarily the most correct) is to set permissive mode for some plugins:+If you use SELinux, we need to permit the check\_disk plugin access to the ''/sys/kernel/...''. Easiest way (but not necessarily the most correct) is to set permissive mode for some plugins:
 <code> <code>
 yum install policycoreutils-python yum install policycoreutils-python
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 allowed_hosts=127.0.0.1,IPofMonitoringServer allowed_hosts=127.0.0.1,IPofMonitoringServer
 </code> </code>
-Create a configuration of system checks in the file ''/etc/nrpe.d/checks.cfg''. Fill in the ''YOUR_NTP_SERVER'' and ''IDM_SERVICE_DOMAIN_NAME'' accordingly. The ''MONITORING_USER'' and ''MONITORING_USER_PASSWORD'' are values filled with credentials of an user which is capable to log into the PostgreSQL database. **Create separate user just for this purpose**.+Create a configuration of system checks in the file ''/etc/nrpe.d/checks.cfg''. Fill in the ''YOUR\_NTP\_SERVER'' and ''IDM\_SERVICE\_DOMAIN\_NAME'' accordingly. The ''MONITORING\_USER'' and ''MONITORING\_USER\_PASSWORD'' are values filled with credentials of an user which is capable to log into the PostgreSQL database. **Create separate user just for this purpose**.
 <file txt checks.cfg> <file txt checks.cfg>
 command[check_swap]=/usr/lib64/nagios/plugins/check_swap -w 50% -c 10% command[check_swap]=/usr/lib64/nagios/plugins/check_swap -w 50% -c 10%
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 command[check_postgres]=/usr/lib64/nagios/plugins/check_pgsql -H 127.0.0.1 -P 5432 -d template1 -l MONITORING_USER -p MONITORING_USER_PASSWORD -w0.5 -c1 command[check_postgres]=/usr/lib64/nagios/plugins/check_pgsql -H 127.0.0.1 -P 5432 -d template1 -l MONITORING_USER -p MONITORING_USER_PASSWORD -w0.5 -c1
 </file> </file>
-Add the ''check_mem'' script to the ''/usr/lib64/nagios/plugins/'' directory, make it executable:+Add the ''check\_mem'' script to the ''/usr/lib64/nagios/plugins/'' directory, make it executable:
 <code> <code>
 cp check_mem /usr/lib64/nagios/plugins/ cp check_mem /usr/lib64/nagios/plugins/
 chmod 755 /usr/lib64/nagios/plugins/check_mem chmod 755 /usr/lib64/nagios/plugins/check_mem
 </code> </code>
-Create the ''MONITORING_USER'' in the PostgreSQL. Generate some strong password - you can use ''pwgen'' for that.+Create the ''MONITORING\_USER'' in the PostgreSQL. Generate some strong password - you can use ''pwgen'' for that.
 <code> <code>
 create user monitoring password 'somepassword'; create user monitoring password 'somepassword';
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 systemctl enable nrpe systemctl enable nrpe
 </code> </code>
-To test the probes, you can use ''check_nrpe'' plugin:+To test the probes, you can use ''check\_nrpe'' plugin:
 <code> <code>
 /usr/lib64/nagios/plugins/check_nrpe -H 127.0.0.1 -b 127.0.0.1 -c check_swap /usr/lib64/nagios/plugins/check_nrpe -H 127.0.0.1 -b 127.0.0.1 -c check_swap
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 This is a sample configuration for the Nagios server. It is meant more as an inspiration, feel free to adapt it to your Nagios deployment. This is a sample configuration for the Nagios server. It is meant more as an inspiration, feel free to adapt it to your Nagios deployment.
  
-Configure the ''check_nrpe'' command (you probably already have this in your Nagios configuration):+Configure the ''check\_nrpe'' command (you probably already have this in your Nagios configuration):
 <code> <code>
 define command{ define command{
  • by urbanl