For any support related questions please visit the Nagios Support Forums at: Article Number: 401 | Rating: 1/5 from 2 votes | Last Updated by. Nagios XI includes a built-in web configuration GUI, which makes it much easier to manage than Core. Millions of users and thousands of companies - ranging from Fortune 500s to small business owners - trust Nagios XI to get the job done. If your locate command fails, install mlocate. Most network devices keep a database called Management Information Base (MIB). If for example you had a Dell device, their PEN is 674, so they would have: .1.3.6.1.4.1.674 = Enterprises # 674 = Dell Inc. You had a service on the sending server that you forced an immediate check to be scheduled, The check triggered a threshold which made it enter a warning state, The sending server sent a trap to the receiving server, Read through the MIB file and find any SNMP Traps, Add these traps to the snmptt configuration file, These traps are added as EVENTS to the new file, EVENTS tell the SNMPTT service what to do with the SNMPT Trap, Multiple SNMP Trap services in Nagios XI to reflect each monitored service of the CentOS server, Only send important information to Nagios XI (don't cloud the issue with too much information), Service status to be correctly reflected (OK / WARNING / CRITICAL / UNKNOWN), This is because the SNMP Traps that arrive for the. Here is an extract from the start of the NAGIOS-NOTIFY-MIB.txt file: First, the IMPORTS section shows that it is importing nagios (PEN 20006) from the MIB file NAGIOS-ROOT-MIB. The next step will show how to use the SNMP Trap wizard to create this service in Nagios XI. Refer to the picture below to understand what this OID means: Description = Hostname as specified in the Nagios configuration file. The snmptrapd service is what receives an SNMP Trap from the networking stack and then places it into a spool directory for the snmptt service to process. This opens the Passive Object Monitoring wizard at Step 3, Now you need to send another trap for the service to update, we'll come back to this screen shortly, Return to the SENDING SNMP server and Schedule a forced immediate check for the Users service. Hi Junaid, first of all thanks for your response and information you provided is very useful & informative but i am already aware of how to setup SNMP monitoring under nagios, my question was how do we setup "SNMP Trap" monitoring in Nagios and why do we need to setup "SNMP Trap" monitoring though we have SNMP monitoring concept available. This contains all the information about this MIB and it ends with ::= {enterprises 20006}. Then addhost entry for each remote box you will monitor. Every time you have a period followed by another number you are creating another branch in the tree, Eventually the last number will reference a value that is being sent (you could say it was a leaf), Think of it along the lines of computer . * Restart the SNMP Monitoring w/ Nagios XI playlist h. If you are still NOT seeing files being created in the directory /var/spool/snmptt/, then there may be an issue with the snmptrapd configuration. SNMP traps are often used by organizations to monitor the health and status of the network infrastructure. Also protocol specification goes form -v3 to --protocol=3. Ultimately it sounds like you should have an active monitor that simply is monitoring a webpage for a specific string. SNMP - Sophos Firewall Los Angeles, California 90017. Millions of users and thousands of companies - ranging from Fortune 500s to small business owners - trust Nagios XI to get the job done. Here are some examples to highlight limitations of our current configuration:Return to your SSH session to your CentOS server. In particular this SNMP Trap service is for ALL SNMP Traps that will come from the sending server (for everything that the sending server server monitors). Fortra's Intermapper vs Kaseya Traverse: which is better? Argument #4 = Severity. PDF How to Integrate SNMP Traps With Nagios XI How to monitor Linux machines with Nagios XI using SNMP. Help Create Join Login. Using VM's allows us to use pre-installed Nagios XI templates and makes it relatively easy to follow this guide. In this example you can see that $* has been used, this is a variable, $* means it will expand all the variables (OBJECTS) that were sent with the trap. Long-term roadmap is to add additional functionality to the trap data . NOTE: Each EVENT is identical for the other except for the EVENT line and the MATCH line. Nagios XI provides complete monitoring of SNMP (Simple Network Management Protocol). The goal of this tutorial is to provide step by step instructions to allow you to setup an test environment and see first hand how traps work. Thanks for contributing an answer to Stack Overflow! Unless you have very intimate knowledge of the web server and the jsp you're monitoring, making it trap upon a broken load will likely be impossible. Establish an ADDITIONAL SSH session to your CentOS server, Minimize the SSH session as we only need it to establish a second user login, Wait while it executes the check and the screen updates, it will go into a critical state, Now it is correctly reflecting the Critical status. Learn how to monitor an AKCP sensorProbe2 device with Nagios XI to be alerted when temperature, humidity, or other environmental variables exceed specific thresholds. There are no attachments for this article. Here's a picture of that first SNMP Trap you received: On the first line we have .1.3.6.1.4.1.20006.1.7. The FORMAT line is one long string and can contains variables. HOLD ON!!! Installing and Configuring Net-SNMP for Linux The last step is the configure services. Information on SNMP v2 traps can be located in the following . This example is using the linuxserver template, be sure to This was intentional as part of the tutorial. SNMP is an "agentless" method of monitoring network devices and servers, and is often preferable to installing dedicated agents on target machines. SNMP means Simple Network Management Protocol. The file is highly commented and thus, we will only make a few changes. Documentation - SNMP Trap Integration. The snmpttconverttmib command will take the traps from a given MIB and create the necessary config for SNMPTT to pass on to Nagios. Find centralized, trusted content and collaborate around the technologies you use most. Events Data Visualizations enable powerful analysis of patterns and problems. How to change Nagios check_snmp configuration to use SNMP v3 What does the EXEC line do now? Once it appears there you can create the Passive service ready to accept new traps. yum install mlocate and then updatedb, then search. Here are the OBJECTS that exist in the trap: In the SNMPTT config file, these values can be referenced as: With this in mind, here's the new EXEC line broken down: The name of the service we are sending a Passive check for is "SNMP Traps - Users", NO performance data is being sent so we are providing empty quotes, The status data we are sending is "USERS WARNING - 1 users currently logged in". It will now go into a Warning state and like the following picture: Establish an SSH session to your SNMP Receiving server. This will be covered next. It requires the following arguments: