Any suggestions of what I can look at, I am out of ideas. Therefore I have done below workaround in client side nrpe.cfg file. host_name server1. 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. 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. Making statements based on opinion; back them up with references or personal experience. The best answers are voted up and rise to the top, Not the answer you're looking for? Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? 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. Some cheaper "unmanaged" switches and hubs don't have IP addresses and are essentially invisible on your network, so there's not any way to monitor them. If your switch supports SNMP, you can monitor port status, etc. To learn more, see our tips on writing great answers. 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. 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. Here's the service definition I use to monitor the bandwidth data that's stored in the log file. Server Fault is a question and answer site for system and network administrators. Have you made sure that the nagios user can run the ping command? Thanks. Nagios check_ssh returns usage information instead of status Looking for job perks? by Box293 Sun Aug 28, 2016 8:34 pm, Post Was Aristarchus the first to propose heliocentrism? Making statements based on opinion; back them up with references or personal experience. 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. Is there another (safer) option, such as adding the Nagios user to ping's group or something? 2. What is this brick with a round back and a stud on the side used for? If the OpenStack cloud is distributed across machines, the NPRE addon can be used to run access plugin information on those remote machines. What is Wario dropping at the end of Super Mario Land 2 and why? They're great. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Assuming we are using the host definition given earlier and a check_ping command defined like this: define command { command_name check_ping command_line /usr/local/nagios/libexec/check_ping -H $HOSTADDRESS$ -w $ARG1$ -c $ARG2$ } The expanded/final command line to be executed for the service's check command would look like this: Checking if a service is running using SNMP is not very straight forward, checking a process is the best solution here, please refer to the Process Checks KB article. Media Coverage This tutorial explains how you can use check_ping command with some basic examples. In the following example, it will wait for 5 seconds before the connection time-out of the remote host. Why are players required to record the moves in World Championship Classical games? 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 Connect and share knowledge within a single location that is structured and easy to search. 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. Check WMI Plus includes a service module that can check if a service is running. This might include things like service check latency (i.e. Add a new host definition for the switch that you're going to monitor. Check web-interface user name and password, and check basic configuration. I don't like it, from a security standpoint. NSClient++ includes a service module that can check if a service is stopped. 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'. 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. To do this, you'll need to verify your configuration and restart Nagios Core. How a top-ranked engineering school reimagined CS curriculum (Ep. 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. A boy can regenerate, so demons eat him for years. How a top-ranked engineering school reimagined CS curriculum (Ep. However, it doesn't describe in which order to pass parameters. However, it doesn't describe in which order to pass parameters. It only takes a minute to sign up. Uploaded the 2 files you requested. Install the Nagios Service", Expand section "4.7. Events Looking at the check_ssh man page doesn't seem to indicate in what order to place these switches You can define a command and use that command for your service. Monitoring Using the Telemetry Service", Collapse section "2. :) This is an excellent post. Everything in that folder should be at 0755. 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Are you talking about check interval? Why in the Sierpiski Triangle is this set being used as the example for the OSC and not a more "natural"? My /etc/nagios/objects/commands.cfg states, which defines the arguments in between the exclamation marks as in the documentation example you gave. 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. service_description PING. define service { use generic-service ; Name of service template to use host_name Host-1 service_description PING check_command check_nrpe!check_ping } define service { use . There are no attachments for this article. 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. check_ping command is a Nagios plugin that is used to check the ping output of a remote server. Support Plans Two MacBook Pro with same model number (A1286) but different year, Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). 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. Remotely monitor servers with the Nagios check_by_ssh plugin Remember, you only need to do this for the *first* switch you monitor. Install the Nagios Service", Collapse section "3.1. by cornelp Mon Aug 29, 2016 8:42 am, Powered by phpBB Forum Software phpBB Limited. For example: Each defined command can then be specified in the services.cfg file on the Nagios monitoring server. 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. "Signpost" puzzle from Tatham's collection, What "benchmarks" means in "what are benchmarks for? In the following example, it sends 10 ICMP ECHO packets to the remote host before its output is measured. Troubleshoot Identity Client (keystone) Connectivity Problems, 4.3. Support forum for Nagios Core, Nagios Plugins, NCPA, NRPE, NSCA, NDOUtils and more. MIP Model with relaxed integer constraints takes longer to solve than normal model, why? Maybe you could look there and get credit for the answer if you have ideas. Nagios: How to determine parameter order check_ssh Knowledge Base If this is the *first* switch you're monitoring, you can simply modify the sample host definition in switch.cfg. However, in the end, that's what I did - and it works. Troubleshoot Keystone v3 Dashboard Authentication, 4.7. SSH can also be used to access remote Nagios plugins. The check_mrtgtraf plugin (which is included in the Nagios plugins distribution) allows you to do this. Apologies, mistyped. Change the host_name, alias, and address fields to appropriate values for the switch. Thanks for contributing an answer to Unix & Linux Stack Exchange! 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. Email: sales@nagios.com Inquire today and let our Quickstart team help you get started with Nagios XI, Up To: Contents If your switch or router supports SNMP, you can monitor a lot of information by using the check_snmp plugin. rev2023.4.21.43403. Configure Nagios to Monitor OpenStack Services, 3.2.5. 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. Log Files for OpenStack Services", Collapse section "1.1. I'll describe how you can monitor the following things on managed switches, hubs, and routers: Note: These instructions assume that you've installed Nagios according to the quickstart guide. Check WMI Plus allows you to check multiple services, here is an example that checks for two services that are running. How To Monitor Network Switch and Ports Using Nagios - The Geek Stuff Nagios - Define as service for all the members of a group *except* some hosts? This type of performance data is available for all checks that are performed. This isn't advised at all, as checking this frequently can lead to a multitude of different issues. with the check_snmp plugin and bandwidth (if you're using MRTG) with the check_mrtgtraf plugin. "host_name !zlinux_hostname". The module 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 CRITICAL an OK state). The state information delivers "Usage: " which is an indicator that the parameters are wrong. How to Make a Black glass pass light through it? Host or Service Check Interval (SOLVED) - Nagios Support Forum define command { command_name check-host-alive command_line $USER1$/check_ping -t 10 -H $HOSTADDRESS$ -w 3000.0,80% -c 5000.0,100% -p 5 } The thing you post is a Nagios command. You can modify the definitions in these and other definitions to suit your needs better if you'd like. Eg. 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. Object definition files that are used to store information about items such as services or contact groups. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. ms|rta=0.627000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0. Engage with the community of users including those using the open source solutions. define service{ host_name linuxbox service_description PING check_command check_ping!200.0,80%!400.0,40% . } 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). Nagios - Configure a hostgroup to include all the hosts of another group? NPCA includes a service module that can check if a service is stopped. Two MacBook Pro with same model number (A1286) but different year. Set up a hostgroup cfg file with the checks in it. The OP is still lurking. 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! Making statements based on opinion; back them up with references or personal experience. Chapter 3. Monitoring Using Nagios - Red Hat Customer Portal Why did US v. Assange skip the court of appeal? If you want to have more granular (free) monitoring, check out InfluxDB, Telegraf and Grafana. since there is no predefined argument to specify the port, like --port=$ARG1$ in the definition, but only a generic place holder. At a minimum, the following must be done: If the OpenStack cloud includes distributed hosts: /etc/nagios/objects/ObjectsDir/ObjectsFile.cfg. rev2023.4.21.43403. When the host goes down, no matter what numbers I use, It will not send an alert until 1.5 minutes later. Connect and share knowledge within a single location that is structured and easy to search. I was already tired of editing these humongous text files, and this just made it so easy. 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. The interval at which these commands are executed are governed by the host_perfdata_file_processing_interval and service_perfdata_file_processing_interval options, respectively. Creating a new HTTP service | Nagios Core Administration Cookbook - Packt 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 To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The hyperbolic space is a conformally compact Einstein manifold. 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. Increase visibility into IT operations to detect and resolve technical issues before they impact your business. It's not them. 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). 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. You'll need to let the check_mrtgtraf plugin know what log file the MRTG data is being stored in, along with thresholds, etc. Community Support Forums For Nagios Open Source Projects, Community Support Forums For Nagios Commercial Products, https://assets.nagios.com/downloads/nag gmain.html. So in it's host cfg, I have: Now the service check is going to alert you for 80% and 90% for all hosts in the hostgroup, except for the host that you added the check with the change values in it. that are installed when you follow the quickstart. You told Nagios to look to the /usr/local/nagios/etc/objects/switch.cfg to find additional object definitions. 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. Additional service files can be used, but they must be specified as a cfg_file parameter in the /etc/nagios/nagios.cfg file. Nagios servers may receive a considerable amount of network traffic, resulting in resource contention. I want to set interval between ping times is 10 seconds like below: But not exactly (about 90 seconds). Implementing effective Ping monitoring with Nagios offers the following benefits: These Nagios solutions provide Ping monitoring capabilities and benefits: Nagios XI is the most powerful and trusted infrastructure monitoring tool on the market. For the time being, just follow the directions outlined below and you'll be monitoring your network routers/switches in no time. In my localhost.cfg I have tried: check_ssh!xxx22!localhost . Plugin-specific performance data is optional and may not be supported by all plugins. If you create the same check in the host cfg, then it'll override the hostgroup check. 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. Based on the ping output, you can decide to set certain warning and critical threshold level, based on which Nagios can send notifications to you. It seems that Nagios is not running the correct command. NRPE is for more complicated checks, where you need to run commands directly on the remote server. At a minimum, Nagios plugins must return a single line of human-readable text that indicates the status of some type of measurable data. UNIX is a registered trademark of The Open Group. What does 'They're at four. I changed the Nagios cfg file interval_length to 10 and the host file to 20 and 10. Multiple lines of performace data (as well as normal text output) can be obtained from plugins, as described in the plugin API documentation. Based on the ping output, you can decide to set certain warning and critical threshold level, based on which Nagios can send notifications to you. On what basis are pardoning decisions made by presidents or governors when exercising their pardoning power? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Configure Nagios so that performance data is either written to files and/or processed by executing commands. Our Customers That's where you'll be adding host and service definitions for routers and switches. Unfortunately, my host checks are failing (although my service checks are working perfectly fine).