Objective The objective is to present the solution for “no acceotable C compiler found” error that occurs while you compile the Plugins or NRPE. Symptom While compiling the Plugins or NRPE, occur some errors, such as: “no acceptable C compiler found“. Solution To resolve, install packages that are requirements. [root@localhost]#…
Objective The objective is to submit the solution for those situations where the netstat command return empty. Symptom When checking if the agent is running, the return of the netstat command is empty. [root@localhost nrpe-2.13]# netstat -vantup | grep 5666 [root@localhost nrpe-2.13]# The NRPE is not running or is running…
Objective The objective is to present the solution for “xinetd: unrecognized service” error that accurs when you try run xinetd Symptom While you try to run xinetd occurs the error: “xinetd: unrecognized service“. [root@localhost nrpe-2.13]# service xinetd restart xinetd: unrecognized service Verifying this information, it should be noted that there…
Objective The objective is to troubleshoot the error occurred when compling the plugins or NRPE. Symptom While compling the plugins or NRPE, occur some errors, such as: “checkinf for gcc… no“. [root@localhost]# ./configure –prefix=/usr/local/opmon — with-nagios-user=opuser –with-nagios-group=users checking for gcc… no checking for cc… no checking for cl.exe… no Verifying…
Objective The objective is to presenting the solution for the following error “Could not complete SSL handshake” or “Error receiving data from daemon” that occurs when you run the query from the OpMon. Symptom When running the query from the OpMon, occur the following errors “Could not complete SSL handshake”…
Objective The objective is to present the solution for situations when the agent runs without error, but does not start. Symptom While trying to run the agent, the command runs without error, but the agent does not start. When checking the log, the following message appears “service/protocol combination no in /etc/services“….
Objective Troubleshoot the error shown when making a query from the OpMon monitored server. Symptom When making a query from the OpMon on the monitored server, occurs the error “Connection refused or timed out“. [root@opmon]# /usr/local/opmon/libexec/check_nrpe -H IP_DO_SERVIDOR Connection refused or timed out Solution Verify that the agent is running. [root@localhost]#netstat-vantup |…
Objective The objective is to describe the necessary steps to verify several patterns of an Oracle database. Target audience It is intended for OpMon administrators and for IT teams that need: Information about what is occurring with the Oracle database at a specific moment or that happened previously; To find…
Objective Describe how to monitor machines using SNMP Target audience It is intended for OpMon administrators and IT teams that need to monitor by SNMP. 1) Introduction Before proceeding, it is required to have the IP address, community and version that the equipment in theory responds by SNMP. A simple test…
Objective Describe the steps to perform web sites monitoring for keywords. Target audience Intended for OpMon administrators and IT teams, that need to perform Web Sites monitoring for keywords Solution How should we monitor Web Sites? Easy, monitoring the 80 TCP port Maybe, but monitoring the 80 TCP port doesn’t…
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