Monitoring Routers and Switches - Nagios The Nagios monitoring system can be used to provide monitoring and alerts for the OpenStack network and infrastructure. Simply change the host check command to use check_host rather than check_ping. Server Fault is a question and answer site for system and network administrators. Two MacBook Pro with same model number (A1286) but different year, Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). how "late" was the service check from its scheduled execution time) and the number of seconds a host or service check took to execute. 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. Nagios: config ping times - Stack Overflow To learn more, see our tips on writing great answers. What is this brick with a round back and a stud on the side used for? Nagios provides complete monitoring of Ping - including reachability and packet loss. Monitoring Using the Telemetry Service", Expand section "3. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. If the verification process produces any errors messages, fix your configuration file before continuing. I currently am experimenting with defining a set of services to all hosts in a hostgroup, this is working fine. Connect and share knowledge within a single location that is structured and easy to search. Was Aristarchus the first to propose heliocentrism? Add OpenStack monitoring to the local server. 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. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. linux - How to send alert in nagios for particular service to Like i have written below two command one for ping and one for swap. As of May 25th, 2018, all communications with Nagios Enterprises and its employees are covered under our new. Configure rsyslog on Individual Nodes, 2. 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 . Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. 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. If not, youll get an error. What is the symbol (which looks similar to an equals sign) called? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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! Here is a link to it's usage: http://nagiosplugins.org/man/check_http So the Nagios Core version is 3.5.1. English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus". By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Monitoring Using Nagios", Expand section "3.1. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Be aware that the service module is cAsE SeNsative, you can overcome this with the match= argument. They're great. define host { use windows-server host_name cielo01 alias cielo01 address cielo01 . Log Files for OpenStack Services", Collapse section "1.1. Nagios: How to determine parameter order check_ssh Log Files for OpenStack Services", Expand section "1.3. How to Make a Black glass pass light through it? 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. by cornelp Mon Aug 29, 2016 8:08 am, Post If anyone has any advice on insights on how to get this working, I'd very much appreciate it! To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Making statements based on opinion; back them up with references or personal experience. Are you talking about check interval? Eg. Below are the command definitions for check-host-alive as well as check_ping. But it doesn't identify that as the port. You could use "Custom Variable Macros" (http://nagios.sourceforge.net/docs/3_0/macros.html). All OpenStack services can be reported, just ensure that a matching command is specified in the remote servers nrpe.cfg file. Multiple lines of performace data (as well as normal text output) can be obtained from plugins, as described in the plugin API documentation. Tip: You can usually find the OIDs that can be monitored on a switch by running the following command (replace 192.168.1.253 with the IP address of the switch):
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. This same file can be used to add new OpenStack monitoring services. Did the drapes in old theatres actually say "ASBESTOS" on them? To learn more, see our tips on writing great answers. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. Nagios Plugins does not include a service plugin however the linux-nrpe-agent does provide check_init_service. since there is no predefined argument to specify the port, like --port=$ARG1$ in the definition, but only a generic place holder. Now you can add some service definitions (to the same configuration file) to monitor different aspects of the switch. Testimonials Was Aristarchus the first to propose heliocentrism? Here is the output when the RemoteAccess service was started: Checking if a service is stopped using SNMP is not very straight forward, checking a process is the best solution here, please refer to the Process Checks KB article. Check WMI Plus includes a service module that can check if a service is running. 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. rev2023.4.21.43403. The "-r 1" option tells the check_snmp plugin to return an OK state if "1" is found in the SNMP result (1 indicates an "up" state on the port) and CRITICAL if it isn't found. If you want to ensure that a specific port/interface on the switch is in an up state, you could add a service definition like this: In the example above, the "-o ifOperStatus.1" refers to the OID for the operational status of port 1 on the switch. "But not exactly"? Website Copyright 2009-2023 Nagios Enterprises, LLC. 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. 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. This isn't advised at all, as checking this frequently can lead to a multitude of different issues. 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. You should also pass both warning and critical threshold limit. 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. An example command definition that redirects service check performance data to a text file for later processing by another application is shown below: 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. nagios-devel This value can be viewed in the /etc/nagios/cgi.cfg file. Why does Acts not mention the deaths of Peter and Paul? Up To: Contents Share Improve this answer Follow answered Feb 10, 2011 at 16:13 rems that are installed when you follow the quickstart. The best answers are voted up and rise to the top, Not the answer you're looking for? NPCA allows you to check multiple services, here is an example that checks for some services that are running and some that are stopped. However, in the end, that's what I did - and it works. Find A Partner, Phone: 1-888-NAGIOS-1 snmpwalk -v1 -c public 192.168.1.253 -m ALL .1. This might include things like service check latency (i.e. Plugin performance data is external data specific to the plugin used to perform the host or service check. I just mis-typed it here, sorry. Define a host in linux-server with a custom PING service definition: 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. Chapter 3. Monitoring Using Nagios - Red Hat Customer Portal Contact Us, Awards by cornelp Tue Aug 16, 2016 1:47 pm, Post In the following example, it sends 10 ICMP ECHO packets to the remote host before its output is measured. There are no attachments for this article. On the central Nagios server, in the commands.cfg configuration file, define the new checks. 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. Extracting arguments from a list of function calls. In your ping service definition use e.g. Certification Add the following service definition to monitor the uptime of the switch. Troubleshoot Keystone v3 Dashboard Authentication, 4.7. Thanks for contributing an answer to Stack Overflow! To learn more, see our tips on writing great answers. Troubleshoot OpenStack Networking Issues, 4.4. Find centralized, trusted content and collaborate around the technologies you use most. with the check_snmp plugin and bandwidth (if you're using MRTG) with the check_mrtgtraf plugin. It is not possible to set intervals of less then one minute with Nagios. I did as you stated. 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. Anyway, if you're interested in testing throughput, there are MUCH better ways of going about it than relying on ICMP, which is the lowest priority traffic type on a network. Note: You should specify % after the second number in the threshold limit pair. OpenStack Dashboard - Red Hat Access Tab", Collapse section "4.7. "host_name !zlinux_hostname". 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. I also had same problem and the above answers did not work for me. 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 youve installed Nagios from source, youll find all the default plugins under /usr/local/nagios/libexec directory. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Making statements based on opinion; back them up with references or personal experience. More expensive switches and routers have addresses assigned to them and can be monitored by pinging them or using SNMP to query status information. check_command check_ping!100.0,20%!500.0,60% This document describes how you can monitor the status of network switches and routers. Services are those which are used by Nagios to check something about a host. Thanks for contributing an answer to Unix & Linux Stack Exchange! by cornelp Tue Aug 16, 2016 10:43 am, Post Nagios provides complete monitoring of Ping including reachability and packet loss. Careers. 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. That configuration file already contains some sample host, hostgroup, and service definitions. What risks are you taking when "signing in with Google"? Therefore I have done below workaround in client side nrpe.cfg file. The $HOSTEXECUTIONTIME$ and $SERVICEEXECUTIONTIME$ macros can be used to determine the number of seconds a host or service check was running and the $HOSTLATENCY$ and $SERVICELATENCY$ macros can be used to determine how "late" a regularly-scheduled host or service check was. Object definition files that are used to store information about items such as services or contact groups. 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 . The "1000000,2000000" options are the warning thresholds (in bytes) for incoming and outgoing traffic rates respectively. Nagios check_ssh returns usage information instead of status Although admittedly, my analysis is primitive. 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. The plugin returns a CRITICAL state if the service is not started. 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'. Make sure the plugin exists in /usr/local/nagios/libexec before you continue. Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. I find it very strange that there are entries in /usr/bin that normal users are not allowed to run? Mine always starts with either "PING: OK" or "PING: CRITICAL". How a top-ranked engineering school reimagined CS curriculum (Ep. If you create the same check in the host cfg, then it'll override the hostgroup check. :) This is an excellent post. Any suggestions on how I can fix my check-host-alive command definition to work properly and evaluate the output of check_ping properly? Data Processing (sahara) Log Files, 1.1.6. You can always comment these services out if they are no longer needed by prefacing each line with a '#' character. Remove the leading pound (#) sign from the following line in the main configuration file: What did you just do? 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. Which was the first Sci-Fi story to predict obnoxious "robo calls"? 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. What differentiates living as mere roommates from living in a marriage-like relationship? 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 Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. Identity Service (keystone) Log Files, 1.1.12. I also find it non-intuitive to have to maintain a list of exclusions separate to where the host itself is actually defined. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. By default the check_ping command will send 5 ICMP ECHO packets. Check WMI Plus includes a service module that can check if a service is stopped. To me, this is not an ideal solution, as we could end up having to make many exceptions and this seems like it would be tough to maintain. That's where you'll be adding host and service definitions for routers and switches. define service{ host_name linuxbox service_description PING check_command check_ping!200.0,80%!400.0,40% . } 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. What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Connect and share knowledge within a single location that is structured and easy to search. Answer Hub "Signpost" puzzle from Tatham's collection. Bare Metal Provisioning (ironic) Log Files, 1.1.5. Our Customers To do this, you'll need to verify your configuration and restart Nagios Core. 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. It only takes a minute to sign up. Write a short script for the item to be monitored (for example, whether a service is running), and place it in the /usr/lib64/nagios/plugins directory. Nagios is the most popular tool which is used to monitor hosts and services running in your IT infrastructure. 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. It seems that Nagios is not running the correct command. 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. NSClient++ allows you to check multiple services, here is an example that checks for two services that are running. All other servicemarks and trademarks are the property of their respective owner. What is the symbol (which looks similar to an equals sign) called? 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%. I can execute the check manually, at the nagios server (Ubuntu Desktop) NSClient++ includes a service module that can check if a service is running. 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. 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. What is scrcpy OTG mode and how does it work? ", Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). Asking for help, clarification, or responding to other answers. Percentage of packet loss, which is called pl. Nagios Monitoring Hosts with check_ping - Stack Overflow Is there a plugin named check_hosts? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. 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. The check_init_service plugin does not support checking multiple services. - basically any type of metric that the plugin is measuring when it executes. It's not them. 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. After some checking the issue further noticed that the reason is IP protocol. You can modify the definitions in these and other definitions to suit your needs better if you'd like. Install and configure NRPE on each remote machine (that has services to be monitored). How can I control PNP and NPN transistors together from one pin? Why in the Sierpiski Triangle is this set being used as the example for the OSC and not a more "natural"? rotate them) using the host_perfdata_file_processing_command and service_perfdata_file_processing_command options. 5 Nagios check_ping Command Examples to Monitor Remote Host I could not found the ping on /usr/bin/ping. What is Wario dropping at the end of Super Mario Land 2 and why? ms|rta=0.627000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0. How a top-ranked engineering school reimagined CS curriculum (Ep. This means if the check_ping does not get a result in 10 seconds, the command will timeout. Browse other questions tagged. To define the check interval, you need to look at the host (or service) configuration file. The check_mrtgtraf plugin (which is included in the Nagios plugins distribution) allows you to do this. 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, Override implicitly inherited service in Icinga. Thanks for contributing an answer to Stack Overflow! 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. If you dont pass any arguments to the check_ping command, it will show all available options as shown below. (3-30 sec interval checks). By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Configuring remote service checks using nagios - Notes_Wiki Have you made sure that the nagios user can run the ping command? check-host-alive is defined in commands.cfg to use check_ping. 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! I did to interval of 3 and retry of 2. Service Checks - Nagios Support Apologies, mistyped. I'm a little bit wary of going to chmod the ping binary (which is what most blog posts have suggested). How about saving the world? Hosts and service configurations are the building blocks of Nagios Core. To configure HTTPD for nagios, follow these steps: To change the default password for the user nagiosadmin, execute: To create a new user, use the following command with the new users name: Update the nagiosadmin email address in /etc/nagios/objects/contacts.cfg: Verify that the basic configuration is working: If errors occur, check the parameters set in /etc/nagios/nagios.cfg. 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). By default the check_ping command will do the connection time out (if it is unable to reach the destination host) after 10 seconds. by cornelp Mon Aug 29, 2016 8:42 am, Powered by phpBB Forum Software phpBB Limited. However, I'd recommend waiting until you're more familiar with configuring Nagios Core before doing so. 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. For this sort of problem I do this a lot. I had to rename them to txt as it would not allow the original ext. Engage with the community of users including those using the open source solutions. This means if the check_ping does not get a result in 10 seconds, the command will timeout. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Why do men's bikes have high bars where you can hit your testicles while women's bikes have the bar much lower? 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). Contact us on our online support forum at https://support.nagios.com/forum/. Increase visibility into IT operations to detect and resolve technical issues before they impact your business. Engage with our Red Hat Product Security team, access security updates, and ensure your environments are not exposed to any known security vulnerabilities. The hyperbolic space is a conformally compact Einstein manifold. I was already tired of editing these humongous text files, and this just made it so easy. My linux box uses a nonstandard port for ssh. rev2023.4.21.43403. Why are players required to record the moves in World Championship Classical games? If you like to change this, use -p option. Could you add more details? Then, in your check_interval change it to 3, and retry interval of 2. 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 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.
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