Benefits Implementing effective Ping monitoring with Nagios offers the following benefits: Increased server, services, and application availability Fast detection of network outages and protocol failures Solutions Make sure the plugin exists in /usr/local/nagios/libexec before you continue. Nagios Configuration is below, I don't see how it can be wrong as I copied it from server and simply changed the server name. The object file localhost.cfg allows for parameters to be passed to check_ssh. Nagios Monitoring Hosts with check_ping - Stack Overflow A boy can regenerate, so demons eat him for years. Change how Nagios determines if server is offline? Checking a service using SNMP is not very straight forward, checking a process is the best solution here, please refer to the Process Checks KB article. Nagios Alert - Server Down but Server is online - Stack Overflow You'll need to create some object definitions in order to monitor a new router/switch. What is Wario dropping at the end of Super Mario Land 2 and why? It was installed on Debian by using 'apt-get install nagios-plugins', and on Redhat/Fedora via RPM, such as nagios-plugins-2.2.1-4git.fc26.aarch64.rpm. The check_snmp plugin will only get compiled and installed if you have the net-snmp and net-snmp-utils packages installed on your system. If total energies differ across different software, how do I decide which software to use? If your switch supports SNMP, you can monitor port status, etc. What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? Remote Logging Installation and Configuration, 1.3.3. I'm a little bit wary of going to chmod the ping binary (which is what most blog posts have suggested). The commands that Nagios executes to process host and service performance data are determined by the host_perfdata_command and service_perfdata_command options, respectively. Have you made sure that the nagios user can run the ping command? NPCA includes a service module that can check if a service is stopped. The most flexible way to process performance data is by having Nagios execute commands (that you specify) to process or redirect the data for later processing by external applications. Asking for help, clarification, or responding to other answers. How a top-ranked engineering school reimagined CS curriculum (Ep. I changed the Nagios cfg file interval_length to 10 and the host file to 20 and 10. Mine always starts with either "PING: OK" or "PING: CRITICAL". Hosts and service configurations are the building blocks of Nagios Core. NSClient++ includes a service module that can check if a service is stopped. While there are certainly some differences in the functionality, the overall end result is the same. Connect and share knowledge within a single location that is structured and easy to search. Chapter 3. Monitoring Using Nagios - Red Hat Customer Portal You told Nagios to look to the /usr/local/nagios/etc/objects/switch.cfg to find additional object definitions. There are a million things that can be monitored via SNMP, so its up to you to decide what you need and want to monitor. Extracting arguments from a list of function calls. Did the drapes in old theatres actually say "ASBESTOS" on them? Performance Data - Nagios Once you've added the new host and service definitions to the switch.cfg file, you're ready to start monitoring the router/switch. See Also: Monitoring Publicly Available Services. I also find it non-intuitive to have to maintain a list of exclusions separate to where the host itself is actually defined. The best answers are voted up and rise to the top, Not the answer you're looking for? I was fairly certain that running chmod U+s /usr/bin/ping would solve the issue, but I was (and still am) wary about chmod'ing system files. ms|rta=0.627000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0. Create new host and service definitions for monitoring the device, CRITICAL if the round trip average (RTA) is greater than 600 milliseconds or the packet loss is 60% or more, WARNING if the RTA is greater than 200 ms or the packet loss is 20% or more, OK if the RTA is less than 200 ms and the packet loss is less than 20%. define host { use windows-server host_name cielo01 alias cielo01 address cielo01 . Monitoring Using Nagios", Expand section "3.1. . Thanks. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? What you show for 'Status Information' is not what it should look like. If all goes fine then you can add more services running on the host that can be accessed remotely Checking SSH service We can use something like this to configure check for SSH service. Sample output from the plugin might look like this: When Nagios sees this plugin output format it will split the output into two parts: In the example above, the $HOSTOUTPUT$ or $SERVICEOUTPUT$ macro would contain "PING ok - Packet loss = 0%, RTA = 0.80 ms" (without quotes) and the $HOSTPERFDATA$ or $SERVICEPERFDATA$ macro would contain "percent_packet_loss=0, rta=0.80" (without quotes). Additionally, you can have Nagios periodically execute commands to periocially process the performance data files (e.g. Is there another (safer) option, such as adding the Nagios user to ping's group or something? Nagios is composed of a server, plugins that report object/host information from both local and remote machines back to the server, a web interface, and configuration that ties all of it together. It is not possible to set intervals of less then one minute with Nagios. However, this can result in too high a CPU load on both the Nagios host and remote machine, and is not recommended. The "5000000,5000000" are critical thresholds (in bytes) for incoming and outgoing traffic rates respectively. do you know of a way to "switch off" one of the checks inherited from the hostgroup? There are several different use cases covered in this KB article: Service - Started Service - Stopped Multiple Services The sections below provide examples of how to perform these checks using different methods. Nagios is designed to allow plugins to return optional performance data in addition to normal status data, as well as allow you to pass that performance data to external applications for processing. I'm not much of a nagios expert, but I do love it. "But not exactly"? Find A Partner, Phone: 1-888-NAGIOS-1 The scheduling engine employs some tricks to keep checks from bunching up and causing CPU spikes, otherwise if you had all of your checks set to run every minute, you would have 59 seconds of nothing and then everything run at once. If the host responds to the ping, then it is 'OK'. Looking for job perks? Services are those which are used by Nagios to check something about a host. So for ping alerts it should go to network@example.com and for swap it should goto storage@example.com. Events Threshold limit for check_ping should be passed as a threshold pair, which has two parts: In the following example, we are checking the ping output for 192.168.1.1 host. This is specified in ms. Configure rsyslog on the Centralized Logging Server, 1.3.4. "host_name !zlinux_hostname". nagios check_ping: Invalid hostname/address - Ask Ubuntu Short story about swapping bodies as a job; the person who hires the main character misuses his body. Up To: Contents Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. However, in the end, that's what I did - and it works. To learn more, see our tips on writing great answers. Why did DOS-based Windows require HIMEM.SYS to boot? Data Processing (sahara) Log Files, 1.1.6. What is the 'define host' entry for this host? Any suggestions of what I can look at, I am out of ideas. But it doesn't identify that as the port. Contact us on our online support forum at https://support.nagios.com/forum/. In the following example, it sends 10 ICMP ECHO packets to the remote host before its output is measured. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. I did as you stated. is there such a thing as "right to be heard"? Website Copyright 2009-2023 Nagios Enterprises, LLC. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. 4.0.8 . Support Plans Thx. Log in to the Nagios dashboard again by using the following URL in your browser, and using the nagiosadmin user and the password that was set in the beginning: Expand section "1.1. Nagios: config ping times - Stack Overflow Some links that lead me to believe this feature should already be implemented: Furthermore, I've checked my copy of the xdata/xodtemplate.c file from the 3.4.1 source code, and at a glance it does seem that in the "skip list", that host level checks are meant to take precedence over the hostgroup checks. By default the check_ping command will do the connection time out (if it is unable to reach the destination host) after 10 seconds. How about saving the world? Nagios services can have high CPU overhead if SSH is used. Certification Increase visibility into IT operations to detect and resolve technical issues before they impact your business. For any support related questions please visit the Nagios Support Forums at: Article Number: 775 | Rating: Unrated | Last Updated by. What is Wario dropping at the end of Super Mario Land 2 and why? Let's take the check_ping plugin as an example and assume that it has been enhanced to return percent packet loss and average round trip time as performance data metrics. Connect and share knowledge within a single location that is structured and easy to search. rev2023.4.21.43403. Here you go. check-host-alive is defined in commands.cfg to use check_ping. Thanks for contributing an answer to Stack Overflow! check_ping command is a Nagios plugin that is used to check the ping output of a remote server. That's it for the SNMP monitoring example. I would suggest you to change the check_command to something like my-check-host-alive and to define my-check-host-alive in commands.cfg to use something like check_tcp. The "-m RFC1213-MIB" is optional and tells the check_snmp plugin to only load the "RFC1213-MIB" instead of every single MIB that's installed on your system, which can help speed things up. The critical limit is 20ms or 5% packet loss. So the Nagios Core version is 3.5.1. Monitoring Using Nagios", Collapse section "3. I can execute the check manually, at the nagios server (Ubuntu Desktop) Which language's style guidelines should be used when writing code that is supposed to be called from another language? As of May 25th, 2018, all communications with Nagios Enterprises and its employees are covered under our new. How do you Null an inherited service check in nagios? I'm trying to figure out how can I check a service and/or a host every 20 secs, then re-try every 10 secs, only to send a notification after 3 retries. How to Make a Black glass pass light through it? Below is the full define host {} template I'm using: For anyone else who runs into this issue, there's another option than changing permissions on ping. Creating a new HTTP service | Nagios Core Administration Cookbook - Packt Nagios check_ssh returns usage information instead of status The following installation procedure installs: Install the required packages as the root user, using the yum command: If any of the packages are not immediately available (for example, gd-devel or gcc), you might have to enable the optional Red Hat channel using subscription-manager: Consider deploying Nagios to a server that is external to the OpenStack environment, allowing it to receive diagnostic information in the event of system issues. Troubleshoot Networks and Routes Tab Display Issues in the Dashboard, 4.5. See Also: Plugins, Plugin API. Host is just like a computer; it can be a physical device or virtual. It's not them. That configuration file already contains some sample host, hostgroup, and service definitions. Remote Logging Installation and Configuration", Collapse section "1.3. That's where you'll be adding host and service definitions for routers and switches. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. rev2023.4.21.43403. Inquire today and let our Quickstart team help you get started with Nagios XI, Up To: Contents Error 1: If you dont specify warning threshold limit, youll get the following error message: Error 2: If you dont specify % at the end of threshold limit pair, youll get the following error message: Error 3: If you dont specify critical threshold limit, youll get the following error message: Error 4: If the warning threshold limit values is greater than the critical limit value, youll get the following error message: Error 5: If the specify -6 and give a IPv4 address, youll get the following error message: Next post: 8 Linux Bash Shell Readline Bind Command Examples, Previous post: How to Change RabbitMQ Log Level in rabbitmq.config from INFO to ERROR, Home | Linux 101 Hacks Table of Contents | Contact | Email | RSS | Copyright 20092022 Ramesh Natarajan All rights reserved | Terms of Service, 8 Linux Bash Shell Readline Bind Command Examples, How to Change RabbitMQ Log Level in rabbitmq.config from INFO to ERROR, Round trip average, which is called as RTA.
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