nagios check_ping define service

Testimonials Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. There are those who will say this isn't a good option because of the ability to range the check_ping command, but it should be remembered that host checks aren't even executed until all service checks for a given host have failed. When the host goes down, no matter what numbers I use, It will not send an alert until 1.5 minutes later. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Percentage of packet loss, which is called pl. However, in the end, that's what I did - and it works. Making statements based on opinion; back them up with references or personal experience. Open nagios web interface and see the host is being pinged properly. I did to interval of 3 and retry of 2. NSClient++ includes a service module that can check if a service is running. If youve installed Nagios from source, youll find all the default plugins under /usr/local/nagios/libexec directory. Thanks for the post. How to Make a Black glass pass light through it? So for example, I'd like to have a host in the linux-server host group, which inherits several services (SSH, Disk, PING, etc), but for specific services I want to override with their own unique values, define a service specific to that host, with custom values. For example: To set up monitoring on each remote machine, execute the following as the root user: In the /etc/nagios/nrpe.cfg file, add the central Nagios server IP address in the allowed_hosts line: In the /etc/nagios/nrpe.cfg file, add any commands to be used to monitor the OpenStack services. If you need to change the modes to "write" or "non-blocking read/write" (useful when writing to pipes), you can use the host_perfdata_file_mode and service_perfdata_file_mode options. By default, on the Nagios server, the /etc/nagios/objects/localhost.cfg file is used to define services for basic local statistics; for example, swap usage or the number of current users. This is specified in ms. Check WMI Plus allows you to check multiple services, here is an example that checks for two services that are running. I had to rename them to txt as it would not allow the original ext. The state information delivers "Usage: " which is an indicator that the parameters are wrong. How to Make a Black glass pass light through it? NPCA includes a service module that can check if a service is running. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. How to Make a Black glass pass light through it? How can I control PNP and NPN transistors together from one pin? 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. 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. I changed the Nagios cfg file interval_length to 10 and the host file to 20 and 10. 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. Add OpenStack monitoring to the local server. Troubleshoot Instance Launching Errors in the Dashboard, 4.6. That's where you'll be adding host and service definitions for routers and switches. Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey, Can execute nagios ssh check manually but get 126/127 out of bounds error from nagios, Different Nagios email notifications for different services, Nagios host notifications not sending via email or logging, Nagios - "Unable to send check for host" or "run check for service". Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? Unfortunately, my host checks are failing (although my service checks are working perfectly fine). Thanks for that. I currently am experimenting with defining a set of services to all hosts in a hostgroup, this is working fine. Identity Service (keystone) Log Files, 1.1.12. Community Support Forums For Nagios Open Source Projects, Community Support Forums For Nagios Commercial Products, https://assets.nagios.com/downloads/nag gmain.html. define host { use windows-server host_name cielo01 alias cielo01 address cielo01 . Why did US v. Assange skip the court of appeal? You can have Nagios write all host and service performance data directly to text files using the host_perfdata_file and service_perfdata_file options. Server Fault is a question and answer site for system and network administrators. Not the answer you're looking for? Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Plugin-specific data can include things like percent packet loss, free disk space, processor load, number of current users, etc. 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. Remove the leading pound (#) sign from the following line in the main configuration file: What did you just do? On the remote machine, and as the root user, execute the following: After the installation, you can view all available plugins in the /usr/lib64/nagios/plugins/ directory. This value can be viewed in the /etc/nagios/cgi.cfg file. Unfortunately right now, even though the host name and service description match that of the group-level PING check, only one PING service is listed for server-01 and this is the group-level PING check, not the host level one. Log Files for Supporting Services, 1.3. Although admittedly, my analysis is primitive. I also use it for IDRAC IPs on Dell Hardware so I can maintain the association and don't have to have a separate host. I can't find it though. That configuration file already contains some sample host, hostgroup, and service definitions. NPCA allows you to check multiple services, here is an example that checks for some services that are running and some that are stopped. You'll need to create some object definitions in order to monitor a new router/switch. Thanks for contributing an answer to Stack Overflow! I checked log: /usr/local/nagios/var/nagios.log the interval between ping times is 90 seconds. The following are some possible error messages that you might get when you try to use check_ping command. Be aware that the service module is cAsE SeNsative, you can overcome this with the match= argument. Email: sales@nagios.com The example below defines a new check_ssh_load command: # 'check_ssh_load' command definition define . How a top-ranked engineering school reimagined CS curriculum (Ep. Is there a plugin named check_hosts? What does 'They're at four. Why xargs does not process the last argument? 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. by cornelp Wed Aug 17, 2016 8:32 am, Post Modify host_name appropriately. I also had same problem and the above answers did not work for me. This will exclude the zlinux host from the service check. On what basis are pardoning decisions made by presidents or governors when exercising their pardoning power? Bare Metal Provisioning (ironic) Log Files, 1.1.5. 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. that are installed when you follow the quickstart. I haven't changed the definition of how check_ping works, and can confirm that I'm getting a "PING OK" whenever the command is run the same way that check-host-alive runs the command, so I cannot figure out what's going on! UNIX is a registered trademark of The Open Group. 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). 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. 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. 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. Understanding the probability of measurement w.r.t. Configure rsyslog on Individual Nodes, 2. "host_name !zlinux_hostname". I put in ` check_ssh!--host=localhost!--port=xxx22` and nagios will start with, Nagios: How to determine parameter order check_ssh. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. SSH can also be used to access remote Nagios plugins. host_name server1. What risks are you taking when "signing in with Google"? At this point I think enabling debug mode and looking at the debug log will be required to understand what is going on. do you know of a way to "switch off" one of the checks inherited from the hostgroup? But ultimately, does not work as if I check the "performance data" of the service check results, I can see in there that the threshold included in the data is that of the group check, not the host check. The "5000000,5000000" are critical thresholds (in bytes) for incoming and outgoing traffic rates respectively. The Industry Standard In IT Infrastructure Monitoring. I know that it may be possible to exclude certain hosts from a group, but this won't work for me as a hostgroup may have multiple services in it, and I won't want to have all of those services removed from the host. However, I'd recommend waiting until you're more familiar with configuring Nagios Core before doing so. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. check_ping command is a Nagios plugin that is used to check the ping output of a remote server. Tikz: Numbering vertices of regular a-sided Polygon, English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus", The hyperbolic space is a conformally compact Einstein manifold. This same file can be used to add new OpenStack monitoring services. To define the check interval, you need to look at the host (or service) configuration file. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? Here Host, warning and critical thresholds were passing by Nagios host as below. It's not them. Nagios services can have high CPU overhead if SSH is used. 2. There are several different use cases covered in this KB article: The sections below provide examples of how to perform these checks using different methods. Increase visibility into IT operations to detect and resolve technical issues before they impact your business. Shared Filesystem Service (manila) Log Files, 1.1.14. How do you Null an inherited service check in nagios? 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. You'll need to let the check_mrtgtraf plugin know what log file the MRTG data is being stored in, along with thresholds, etc. Answer Hub density matrix. Check WMI Plus includes a service module that can check if a service is stopped. Add a new host definition for the switch that you're going to monitor. You should also pass both warning and critical threshold limit. It is not possible to set intervals of less then one minute with Nagios. Set up a hostgroup cfg file with the checks in it. If not, youll get an error. line, since nagios will substitute $HOSTADDRESS$ for the appropriate hosts ip/name. To do this, you can include the service in the server1.cfg file, as in the following example, which pings the host on a regular basis: define service{ use local-service ; Name of service template to use. 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 it doesn't, skip this section. My understanding, however, is that a change was made around version 3.2.0 to allow host-level services to take precedence of hostgroup-level services. To do this, you'll need to verify your configuration and restart Nagios Core. I did as you stated. After installing nagios and nagios-plugins-all (via yum), I've created a number of hosts and service definitions, have tested my configuration with nagios -v /etc/nagios/nagios.cfg, and have Nagios up and running! Install the Nagios Service", Expand section "4.7. At a minimum, the following must be done: If the OpenStack cloud includes distributed hosts: /etc/nagios/objects/ObjectsDir/ObjectsFile.cfg. Thanks for contributing an answer to Server Fault! Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. how "late" was the service check from its scheduled execution time) and the number of seconds a host or service check took to execute. Why do men's bikes have high bars where you can hit your testicles while women's bikes have the bar much lower? It seems to me that there has to be a safer way to do it. Like i have written below two command one for ping and one for swap. What is Wario dropping at the end of Super Mario Land 2 and why? Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? Remote Logging Installation and Configuration", Expand section "2. OpenStack Dashboard - Red Hat Access Tab. For any support related questions please visit the Nagios Support Forums at: Article Number: 775 | Rating: Unrated | Last Updated by. Post rotate them) using the host_perfdata_file_processing_command and service_perfdata_file_processing_command options. 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. Find A Partner, Phone: 1-888-NAGIOS-1 This should be specified as %age. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. For the time being, just follow the directions outlined below and you'll be monitoring your network routers/switches in no time. 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. In the example above, the "/var/lib/mrtg/192.168.1.253_1.log" option that gets passed to the check_local_mrtgtraf command tells the plugin which MRTG log file to read from. The MRTG log file is stored in /var/lib/mrtg/192.168.1.253_1.log. 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. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? 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. For this sort of problem I do this a lot. NSClient++ includes a service module that can check if a service is stopped. As of May 25th, 2018, all communications with Nagios Enterprises and its employees are covered under our new. Engage with our Red Hat Product Security team, access security updates, and ensure your environments are not exposed to any known security vulnerabilities. Tell Nagios which hosts are being monitored. 1. It does seem to be registering on some level as in my Nagios logs I can see: Jul 16 19:12:27 localhost nagios: Warning: Duplicate definition found for service 'PING' on host 'server-01'. To learn more, see our tips on writing great answers. check-host-alive is defined in commands.cfg to use check_ping. It is great for things like number of services or what load or how much memory each machine has. by rkennedy Tue Aug 16, 2016 11:34 am, Post ", Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). Events The plugin can only check if the service is started, you could however use the negate plugin to invert the returned result from the plugin (hence making "stopped" have an OK state). Linux is a registered trademark of Linus Torvalds. Why did US v. Assange skip the court of appeal? Plugin-specific performance data (if available) can be obtained by using the $HOSTPERFDATA$ and $SERVICEPERFDATA$ macros. The plugin returns a CRITICAL state if the service is not started. In my localhost.cfg I have tried: check_ssh!xxx22!localhost . 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 . See this page for details on it's usage: http://nagiosplugins.org/man/check_ping Instead, I believe you'll need to use the check_http command to verify the web server is responding. ', referring to the nuclear power plant in Ignalina, mean? Any check that you place in a hostgroup will apply to any host in that hostgroup (which you knew already). Troubleshoot Networks and Routes Tab Display Issues in the Dashboard, 4.5. 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. If total energies differ across different software, how do I decide which software to use? Did the drapes in old theatres actually say "ASBESTOS" on them? If the host responds to the ping, then it is 'OK'. Check the documentation that comes with the addon for more information. The object file localhost.cfg allows for parameters to be passed to check_ssh. 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. The following installation procedure installs: nagios Nagios program that monitors hosts and services on the network, and which can send email or page alerts when a problem arises and when a problem is resolved. Increased server, services, and application availability, Fast detection of network outages and protocol failures. An example file format template for service performance data might look like this: By default, the text files will be opened in "append" mode. check_command check_ping!100.0,20%!500.0,60% 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. by cornelp Mon Aug 29, 2016 8:42 am, Powered by phpBB Forum Software phpBB Limited. Monitoring Using the Telemetry Service", Collapse section "2. Monitoring Using Nagios", Collapse section "3. (3-30 sec interval checks). Connect and share knowledge within a single location that is structured and easy to search. 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%. My /etc/nagios/objects/commands.cfg states, which defines the arguments in between the exclamation marks as in the documentation example you gave. 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. Log Files for OpenStack Services", Collapse section "1.1. Engage with the community of users including those using the open source solutions. In your ping service definition use e.g. once I passed the correct IP protocol , It worked fine. So in my troubleshooting, I drilled down into the Nagios Plugins directory (/usr/lib64/nagios/plugins), and ran a test with the check_ping plugin consistent with the way check-host-alive runs the command (see below for my check-host-alive command definition): This check_ping command returns the following output: PING OK - Packet loss = 0%, RTA = 0.63

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