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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. There are no attachments for this article. Because what you are showing is the command. If it doesn't, install net-snmp and net-snmp-utils and recompile/reinstall the Nagios plugins. . You'll need to create some object definitions in order to monitor a new router/switch. Actually called check_host, without the 's'. How about saving the world? Here's my basic C: drive space check. This document describes how you can monitor the status of network switches and routers. define service{ use generic-service ; Inherit values from a template host_name linksys-srw224p ; The name of the host the service is associated with service_description PING ; The service description check_command check_ping!200.0,20%!600.0,60% ; The command used to monitor the service normal_check_interval 5 ; Check the service every 5 minutes . Nagios: How to determine parameter order check_ssh That's where you'll be adding host and service definitions for routers and switches. Here Host, warning and critical thresholds were passing by Nagios host as below, define service { use generic-service hostgroup_name all-servers service_description Host Ping Status check_command check_nrpe_args!check_ping_args!localhost!3000.0,80%!5000.0,100% } Share Follow answered Apr 28, 2020 at 1:45 Hasitha 698 8 16 Add a comment If Nagios Core can't get a response to its check, then it will flag the state of the service as CRITICAL, and will try again up to two more times before sending a notification. Add the following service definition in order to monitor packet loss and round trip average between the Nagios host and the switch every 5 minutes under normal conditions. Learn more about Stack Overflow the company, and our products. For any support related questions please visit the Nagios Support Forums at: Article Number: 775 | Rating: Unrated | Last Updated by. Short story about swapping bodies as a job; the person who hires the main character misuses his body. Eg. It does seem to be registering on some level as in my Nagios logs I can see: Overriding Nagios hostgroup service with host service, https://www.mail-archive.com/nagios-users@lists.sourceforge.net/msg29273.html, http://forum.centreon.com/showthread.php/10643-Over-riding-checks-in-hostgroup, http://ehc.ac/p/nagios/mailman/message/22496927/, http://markmail.org/message/ms6rzljthml7ejlt, http://nagios.sourceforge.net/docs/3_0/macros.html. You can modify the definitions in these and other definitions to suit your needs better if you'd like. What is scrcpy OTG mode and how does it work? It also tells us that. To define the check interval, you need to look at the host (or service) configuration file. For situations, for example, where one particular Linux Server needs to have it's PING check threshold raised from the default. Can you still use Commanders Strike if the only attack available to forego is an attack against an ally? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Here is a link to it's usage: http://nagiosplugins.org/man/check_http 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. Verify that the updated configuration is working: If errors occur, check the parameters set in /etc/nagios/nagios.cfg, /etc/nagios/services.cfg, and /etc/nagios/hosts.cfg. What is scrcpy OTG mode and how does it work? QGIS automatic fill of the attribute table by expression. However, this can result in too high a CPU load on both the Nagios host and remote machine, and is not recommended. 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. An example command definition that redirects service check performance data to a text file for later processing by another application is shown below: Tip: This method, while flexible, comes with a relatively high CPU overhead. The Industry Standard In IT Infrastructure Monitoring. Knowledge Base Plugin-specific performance data is optional and may not be supported by all plugins. Install and configure NRPE on each remote machine (that has services to be monitored). Extracting arguments from a list of function calls. I want to set interval between ping times is 10 seconds like below: But not exactly (about 90 seconds). the '-t 10' is not the interval, but the timeout argument. nagios-devel What differentiates living as mere roommates from living in a marriage-like relationship? Thanks for contributing an answer to Unix & Linux Stack Exchange! As of May 25th, 2018, all communications with Nagios Enterprises and its employees are covered under our new. It is not possible to set intervals of less then one minute with Nagios. Increase visibility into IT operations to detect and resolve technical issues before they impact your business. 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. line, since nagios will substitute $HOSTADDRESS$ for the appropriate hosts ip/name. 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. nagios (Last Notification: N/A (notification 0)). Read on for more information on how plugins can return performance data to Nagios for inclusion in the $HOSTPERFDATA$ and $SERVICEPERFDATA$ macros. 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. 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. The interval between checks in this example is 5 minutes (check_interval). Remote Logging Installation and Configuration", Collapse section "1.3. Add a new host definition for the switch that you're going to monitor. Connect and share knowledge within a single location that is structured and easy to search. You told Nagios to look to the /usr/local/nagios/etc/objects/switch.cfg to find additional object definitions. Currently, I'm defining my group-level PING service like so: I know it's an old post, but I just ran across this question while I was looking for something else. Everything in that folder should be at 0755. 565), Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. PerfParse), the addon may be expecting that the plugin returns performance data in a specific format. Was Aristarchus the first to propose heliocentrism? So for ping alerts it should go to network@example.com and for swap it should goto storage@example.com. Within the Nagios Web GUI / Dashboard, if I drill down into a Host page with the "Host State Information", I see this being reported for "Status Information" (IP address removed): Status Information: /usr/bin/ping -n -U -w 30 -c 5 {my-host-ip-address}, CRITICAL - Could not interpret output from ping command. Any suggestions on how I can fix my check-host-alive command definition to work properly and evaluate the output of check_ping properly? UNIX is a registered trademark of The Open Group. For example, advice was given in one of the above links (second one) to do the following: In the service definition add a line under "hostgroup_name": 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 hyperbolic space is a conformally compact Einstein manifold. Monitoring Using the Telemetry Service, 3.2.2. Making statements based on opinion; back them up with references or personal experience. service_perfdata_file_processing_interval, Everything before the pipe character is considered to be the "normal" plugin output and will be stored in either the $HOSTOUTPUT$ or $SERVICEOUTPUT$ macro, Everything after the pipe character is considered to be the plugin-specific performance data and will be stored in the $HOSTPERFDATA$ or $SERVICEPERFDATA$ macro. 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. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. SSH can also be used to access remote Nagios plugins. The thing you post is a Nagios command. Why does Acts not mention the deaths of Peter and Paul? Any check that you place in a hostgroup will apply to any host in that hostgroup (which you knew already). @JimBlack - Well, that's the error I'm seeing. What is the symbol (which looks similar to an equals sign) called? Two MacBook Pro with same model number (A1286) but different year. Could you add more details? Configuring remote service checks using nagios - Notes_Wiki If the verification process produces any errors messages, fix your configuration file before continuing. Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Nagios provides complete monitoring of Ping including reachability and packet loss. In addition, there are a number of points to review for optimal Nagios placement: NRPE (Nagios Remote Plugin Executor) plugins are compiled executables or scripts that are used to check the status of a hosts service, and report back to the Nagios service. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? In my localhost.cfg I have tried: check_ssh!xxx22!localhost . Nagios check_ssh returns usage information instead of status However, I'd recommend waiting until you're more familiar with configuring Nagios Core before doing so. snmpwalk -v1 -c public 192.168.1.253 -m ALL .1. The OP is still lurking. Plugins can return optional performance data in their output by sending the normal, human-readable text string that they usually would, followed by a pipe character (|), and then a string containing one or more performance data metrics. It is great for things like number of services or what load or how much memory each machine has. how "late" was the service check from its scheduled execution time) and the number of seconds a host or service check took to execute. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Uploaded the 2 files you requested. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. If you want to have more granular (free) monitoring, check out InfluxDB, Telegraf and Grafana. Multiple lines of performace data (as well as normal text output) can be obtained from plugins, as described in the plugin API documentation. linux - How to send alert in nagios for particular service to check-host-alive is defined in commands.cfg to use check_ping. 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. NSClient++ includes a service module that can check if a service is stopped. My linux box uses a nonstandard port for ssh. To learn more, see our tips on writing great answers. Media Coverage by rkennedy Tue Aug 16, 2016 11:34 am, Post This should be specified as %age. Inquire today and let our Quickstart team help you get started with Nagios XI, Up To: Contents "Signpost" puzzle from Tatham's collection. By default the check_ping command will send 5 ICMP ECHO packets. host_name server1. OpenStack Dashboard - Red Hat Access Tab. # Service definition to ping the switch using check_ping define service{ use generic-service hostgroup_name switches service_description PING check_command check_ping!200.0,20%!600.0,60% normal_check_interval 5 retry_check_interval 1 } # Service definition to monitor switch uptime using check_snmp define service{ use generic-service hostgroup . The configuration we've added adds a simple service check definition for an existing host, to check up to three times whether the HTTP daemon on that host is responding to a simple HTTP/1.1 request. Modify host_name appropriately. that are installed when you follow the quickstart. 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. For this sort of problem I do this a lot. Nagios XI is the easy-to-use, enterprise version of Nagios that features: Download a free 60-day trial of Nagios XI or give the online demo a spin. Bare Metal Provisioning (ironic) Log Files, 1.1.5. tar command with and without --absolute-names option. If you want to process the performance data that is available from Nagios and the plugins, you'll need to do the following: Read on for information on how to process performance data by writing to files or executing commands. This will exclude the zlinux host from the service check. ', referring to the nuclear power plant in Ignalina, mean? For example: Each defined command can then be specified in the services.cfg file on the Nagios monitoring server. My issue is that I then want to be able to override these service definitions which have been included in the host, from the hostgroup. Change the host_name, alias, and address fields to appropriate values for the switch. Remove the leading pound (#) sign from the following line in the main configuration file: What did you just do? check_ping command is a Nagios plugin that is used to check the ping output of a remote server. Answer Hub How can I control PNP and NPN transistors together from one pin? The module defines a "good" service as one that is running and a "bad" service is one that is not running, so you can define critical is when more than 0 "good" services exist. How to disable host checks of existing hosts in Nagios? It seems to me that there has to be a safer way to do it. Short story about swapping bodies as a job; the person who hires the main character misuses his body. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 5 Nagios check_ping Command Examples to Monitor Remote Host Asking for help, clarification, or responding to other answers. Nagios, the Nagios logo, and Nagios graphics are the servicemarks, trademarks, or registered trademarks owned by Nagios Enterprises. On the central Nagios server, in the commands.cfg configuration file, define the new checks. ", Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). (3-30 sec interval checks). The "5000000,5000000" are critical thresholds (in bytes) for incoming and outgoing traffic rates respectively. There are two basic categories of performance data that can be obtained from Nagios: Check performance data is internal data that relates to the actual execution of a host or service check. service_description PING. Open nagios web interface and see the host is being pinged properly. If this is the *first* switch you're monitoring, you can simply modify the sample service definition in switch.cfg. Nagios: Service dependency on same host for an entire hostgroup, Nagios/Icinga check of Windows disk space, wrong -l argument. The example below defines a new check_ssh_load command: # 'check_ssh_load' command definition define . How to Make a Black glass pass light through it? I can't find it though. : In your host template set a default value: In the host definition that should use a difference value set e.g. To learn more, see our tips on writing great answers. Making statements based on opinion; back them up with references or personal experience. The sample configuration entries below reference objects that are defined in the sample config files (commands.cfg, templates.cfg, etc.) Chapter 3. Monitoring Using Nagios - Red Hat Customer Portal Up To: Contents I was already tired of editing these humongous text files, and this just made it so easy. It's not them. I don't like it, from a security standpoint. If anyone has any advice on insights on how to get this working, I'd very much appreciate it! Nagios - Configure a hostgroup to include all the hosts of another group? Support forum for Nagios Core, Nagios Plugins, NCPA, NRPE, NSCA, NDOUtils and more. Millions of users and thousands of companies - ranging from Fortune 500s to small business owners - trust Nagios XI to get the job done. If you're processing performance data for a large number of hosts and services, you'll probably want Nagios to write performance data to files instead. Thanks for that. Thanks. check_command check_ping!100.0,20%!500.0,60% OpenStack Dashboard - Red Hat Access Tab", Red Hat JBoss Enterprise Application Platform, Red Hat Advanced Cluster Security for Kubernetes, Red Hat Advanced Cluster Management for Kubernetes, Logging, Monitoring, and Troubleshooting Guide, 1.1.1. Viewed 12510 times since Tue, Nov 14, 2017, Viewed 18313 times since Tue, Nov 28, 2017, Viewed 17861 times since Wed, Nov 15, 2017, Viewed 6949 times since Tue, Nov 28, 2017, Viewed 41367 times since Mon, Nov 13, 2017, Viewed 16145 times since Tue, Nov 28, 2017, Viewed 29720 times since Sun, Nov 12, 2017, Viewed 15533 times since Mon, Nov 20, 2017, Viewed 11868 times since Wed, Nov 29, 2017, Viewed 69092 times since Thu, Nov 9, 2017. News What is the 'define host' entry for this host? However, in the end, that's what I did - and it works. Plugin-specific performance data (if available) can be obtained by using the $HOSTPERFDATA$ and $SERVICEPERFDATA$ macros. Orthogonally defining services and contacts for a host/hostgroup? I can ping the nagios server and the nagios server is able to ping the server. For example, the following script checks the number of Compute instances, and is stored in a file named nova-list: In the /etc/nagios/objects/commands.cfg file, specify a command section for each new script: In the /etc/nagios/objects/localhost.cfg file, define a service for each new item, using the defined command. Remember, you only need to do this for the *first* switch you monitor. Additionally, you can have Nagios periodically execute commands to periocially process the performance data files (e.g. For example, the check_ping plugin might return a line of text like the following: With this simple type of output, the entire line of text is available in the $HOSTOUTPUT$ or $SERVICEOUTPUT$ macros (depending on whether this plugin was used as a host check or service check). Add the following service definition to monitor the uptime of the switch. Additional service files can be used, but they must be specified as a cfg_file parameter in the /etc/nagios/nagios.cfg file. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Some methods support checking multiple services at once. Nagios should be hosted on a securely locked down server, especially if security events are being monitored. Adjust this to say, 10. What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? 1. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. Data Processing (sahara) Log Files, 1.1.6. The "10" option causes the plugin to return a CRITICAL state if the MRTG log file is older than 10 minutes (it should be updated every 5 minutes). once I passed the correct IP protocol , It worked fine. For the time being, just follow the directions outlined below and you'll be monitoring your network routers/switches in no time. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. If total energies differ across different software, how do I decide which software to use? How To Monitor Network Switch and Ports Using Nagios - The Geek Stuff 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). If the host responds to the ping, then it is 'OK'. What is Wario dropping at the end of Super Mario Land 2 and why? But it doesn't identify that as the port. Create Service Definitions for Remote Services, 4.2. My /etc/nagios/objects/commands.cfg states, which defines the arguments in between the exclamation marks as in the documentation example you gave. NSClient++ includes a service module that can check if a service is running. For the *first* router/switch you monitor, you can simply modify the sample host and service definitions in that file, rather than creating new ones. Nagios Monitoring Hosts with check_ping - Stack Overflow What does 'They're at four. Monitoring Using Nagios", Collapse section "3. Post Be aware that the service module is cAsE SeNsative, you can overcome this with the match= argument. name host-services ; The name of this host template check_period extendhours ; By default, switches are monitored round the clock check_interval 0.30 ; Switches are checked every 5 minutes retry_interval 0.20 ; Schedule host check retries at 1 minute intervals max_check_attempts 3 ; Check each switch 10 times (max) nagios check_ping: Invalid hostname/address - Ask Ubuntu Host or Service Check Interval (SOLVED) - Nagios Support Forum Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. If you're monitoring bandwidth usage on your switches or routers using MRTG, you can have Nagios alert you when traffic rates exceed thresholds you specify. In the check_command directive of the service definition above, the "-C public" tells the plugin that the SNMP community name to be used is "public" and the "-o sysUpTime.0" indicates which OID should be checked. There should be no reference to /usr/bin/ping in that output, even when failing. NPCA allows you to check multiple services, here is an example that checks for some services that are running and some that are stopped. by cornelp Mon Aug 29, 2016 8:42 am, Powered by phpBB Forum Software phpBB Limited. NSClient++ includes a service module that can check if a service is running. While there are certainly some differences in the functionality, the overall end result is the same.