Mine always starts with either "PING: OK" or "PING: CRITICAL". Change how Nagios determines if server is offline? Plugin-specific data can include things like percent packet loss, free disk space, processor load, number of current users, etc. Engage with the community of users including those using the open source solutions. I am currently running 3.4.1, so I would think this should be working. Check WMI Plus allows you to check multiple services, here is an example that checks for two services that are running. Millions of users and thousands of companies - ranging from Fortune 500s to small business owners - trust Nagios XI to get the job done. You'll need to create some object definitions in order to monitor a new router/switch. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Contact Us, Awards check_ping command is a Nagios plugin that is used to check the ping output of a remote server. NSClient++ includes a service module that can check if a service is running. Remote Logging Installation and Configuration, 1.3.3. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. "Signpost" puzzle from Tatham's collection, What "benchmarks" means in "what are benchmarks for? 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). At a minimum, Nagios plugins must return a single line of human-readable text that indicates the status of some type of measurable data. Linux is a registered trademark of Linus Torvalds. It will have quite a lot of load on the system as well. Log Files for Supporting Services, 1.3. 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. I checked log: /usr/local/nagios/var/nagios.log the interval between ping times is 90 seconds. The "1000000,2000000" options are the warning thresholds (in bytes) for incoming and outgoing traffic rates respectively. Keep your systems secure with Red Hat's specialized responses to security vulnerabilities. do you know of a way to "switch off" one of the checks inherited from the hostgroup? 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. To do this, you'll need to verify your configuration and restart Nagios Core. 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. Nagios - Hosts and Services - TutorialsPoint This means if the check_ping does not get a result in 10 seconds, the command will timeout. I tried that as well, but ran into a different issue. 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. You told Nagios to look to the /usr/local/nagios/etc/objects/switch.cfg to find additional object definitions. rev2023.4.21.43403. News 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. Thx. The warning limit is 10ms RTA or 2% packet-loss. Benefits Implementing effective Ping monitoring with Nagios offers the following benefits: Increased server, services, and application availability Fast detection of network outages and protocol failures Solutions ms|rta=0.627000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0. There are no attachments for this article. 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. "Signpost" puzzle from Tatham's collection. Unfortunately, my host checks are failing (although my service checks are working perfectly fine). All other servicemarks and trademarks are the property of their respective owner. If it doesn't, install net-snmp and net-snmp-utils and recompile/reinstall the Nagios plugins. Contact us on our online support forum at https://support.nagios.com/forum/. Answer Hub Media Coverage Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? OpenStack Dashboard - Red Hat Access Tab. 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. Uploaded the 2 files you requested. Why are players required to record the moves in World Championship Classical games? Increase visibility into IT operations to detect and resolve technical issues before they impact your business. Knowledge Base 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. Find A Partner, Phone: 1-888-NAGIOS-1 Nagios - Define as service for all the members of a group *except* some hosts? I put in ` check_ssh!--host=localhost!--port=xxx22` and nagios will start with, Nagios: How to determine parameter order check_ssh. 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. If the verification process produces any errors messages, fix your configuration file before continuing. 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. Open nagios web interface and see the host is being pinged properly. 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' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. Add a new host definition for the switch that you're going to monitor. by cornelp Tue Aug 16, 2016 10:43 am, Post I did to interval of 3 and retry of 2. 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. When the host goes down, no matter what numbers I use, It will not send an alert until 1.5 minutes later. Browse other questions tagged. Find centralized, trusted content and collaborate around the technologies you use most. What differentiates living as mere roommates from living in a marriage-like relationship? It only takes a minute to sign up. 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. That's it for the SNMP monitoring example. Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. Monitoring Routers and Switches Nagios Core Documentation Nagios - Configure a hostgroup to include all the hosts of another group? So the Nagios Core version is 3.5.1. I just mis-typed it here, sorry. What were the poems other than those by Donne in the Melford Hall manuscript? rev2023.4.21.43403. NRPE and the Nagios plugins must be installed on each remote machine to be monitored. Videos It's not them. What is scrcpy OTG mode and how does it work? by cornelp Tue Aug 16, 2016 1:47 pm, Post That's where you'll be adding host and service definitions for routers and switches. Support forum for Nagios Core, Nagios Plugins, NCPA, NRPE, NSCA, NDOUtils and more. What you show for 'Status Information' is not what it should look like. You can modify the definitions in these and other definitions to suit your needs better if you'd like. How to Make a Black glass pass light through it? by rkennedy Tue Aug 16, 2016 11:34 am, Post On what basis are pardoning decisions made by presidents or governors when exercising their pardoning power? Why did DOS-based Windows require HIMEM.SYS to boot? The example below defines a new check_ssh_load command: # 'check_ssh_load' command definition define . If you dont pass any arguments to the check_ping command, it will show all available options as shown below. 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 . It does seem to be registering on some level as in my Nagios logs I can see: However, I'd recommend waiting until you're more familiar with configuring Nagios Core before doing so. For situations, for example, where one particular Linux Server needs to have it's PING check threshold raised from the default. 1. 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. Install and configure NRPE on each remote machine (that has services to be monitored). Let's take the check_ping plugin as an example and assume that it has been enhanced to return percent packet loss and average round trip time as performance data metrics. He also rips off an arm to use as a sword. However, in the end, that's what I did - and it works. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. However, it doesn't describe in which order to pass parameters. What is the symbol (which looks similar to an equals sign) called? check_command check_ping!100.0,20%!500.0,60% Why in the Sierpiski Triangle is this set being used as the example for the OSC and not a more "natural"? Then, in your check_interval change it to 3, and retry interval of 2. Why does Acts not mention the deaths of Peter and Paul? Maybe you could look there and get credit for the answer if you have ideas. So for ping alerts it should go to network@example.com and for swap it should goto storage@example.com. Include check_command with nagios/icinga alerts. Here you go. 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. The "-m RFC1213-MIB" is optional and tells the check_snmp plugin to only load the "RFC1213-MIB" instead of every single MIB that's installed on your system, which can help speed things up. The 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. Services are those which are used by Nagios to check something about a host. I am using nagios ver. Here's the service definition I use to monitor the bandwidth data that's stored in the log file. Troubleshoot OpenStack Networking Issues, 4.4. Why xargs does not process the last argument? The state information delivers "Usage: " which is an indicator that the parameters are wrong. Up To: Contents To subscribe to this RSS feed, copy and paste this URL into your RSS reader. What is Wario dropping at the end of Super Mario Land 2 and why? English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus". 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 a top-ranked engineering school reimagined CS curriculum (Ep. Plugin performance data is external data specific to the plugin used to perform the host or service check. Ensure that Nagios is started automatically when the system boots: Check your Nagios access by using the following URL in your browser, and using the nagiosadmin user and the password that was set in Step 2: If the Nagios URL cannot be accessed, ensure your firewall rules have been set up correctly. Add the following service definition to monitor the uptime of the switch. service_description PING. If the host responds to the ping, then it is 'OK'. Was Aristarchus the first to propose heliocentrism? Making statements based on opinion; back them up with references or personal experience. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Troubleshoot Keystone v3 Dashboard Authentication, 4.7. Additional service files can be used, but they must be specified as a cfg_file parameter in the /etc/nagios/nagios.cfg file. Our tech support team is happy to help you with any questions you might have. How to Make a Black glass pass light through it? Performance Data - Nagios But it doesn't identify that as the port. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Why did US v. Assange skip the court of appeal? How do you Null an inherited service check in nagios? 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. The check_ping command just validates the availability of a system via an ICMP ping packet. So, you really dont need to specify -4 (which is optional). Did the drapes in old theatres actually say "ASBESTOS" on them? 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. What are the arguments for/against anonymous authorship of the Gospels, Embedded hyperlinks in a thesis or research paper. Once you've added the new host and service definitions to the switch.cfg file, you're ready to start monitoring the router/switch. rotate them) using the host_perfdata_file_processing_command and service_perfdata_file_processing_command options. How about saving the world? This will exclude the zlinux host from the 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 find it very strange that there are entries in /usr/bin that normal users are not allowed to run? Tell Nagios which hosts are being monitored. Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? Thanks for contributing an answer to Stack Overflow! Thanks for the post. The plugin returns a CRITICAL state if the service is not started. ', referring to the nuclear power plant in Ignalina, mean? density matrix. I've deployed a new instance of Nagios on a fresh install of CentOS 7 via the EPEL repository. See Also: Plugins, Plugin API. This means if the check_ping does not get a result in 10 seconds, the command will timeout. It only takes a minute to sign up. : In your host template set a default value: In the host definition that should use a difference value set e.g. If youve installed Nagios from source, youll find all the default plugins under /usr/local/nagios/libexec directory. To define the check interval, you need to look at the host (or service) configuration file. It also tells us that. 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. NPCA includes a service module that can check if a service is stopped. Are you talking about check interval? Creating a new HTTP service | Nagios Core Administration Cookbook - Packt 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. @JimBlack - Well, that's the error I'm seeing. How about saving the world? What are the arguments for/against anonymous authorship of the Gospels, Generic Doubly-Linked-Lists C implementation. 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). line, since nagios will substitute $HOSTADDRESS$ for the appropriate hosts ip/name. Make sure the plugin exists in /usr/local/nagios/libexec before you continue. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Additionally, you can have Nagios periodically execute commands to periocially process the performance data files (e.g. 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. 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. Add OpenStack monitoring to the local server. Check web-interface user name and password, and check basic configuration. 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. QGIS automatic fill of the attribute table by expression. To learn more, see our tips on writing great answers. Nagios: Service dependency on same host for an entire hostgroup, Nagios/Icinga check of Windows disk space, wrong -l argument. :) This is an excellent post. This document describes how you can monitor the status of network switches and routers. You could use "Custom Variable Macros" (http://nagios.sourceforge.net/docs/3_0/macros.html). Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. 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. Configuring remote service checks using nagios - Notes_Wiki Percentage of packet loss, which is called pl. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. You should also pass both warning and critical threshold limit. What is this brick with a round back and a stud on the side used for? Remote Logging Installation and Configuration", Expand section "2. This might include things like service check latency (i.e. Start check_tcp with -h to see the help for it. I can execute the check manually, at the nagios server (Ubuntu Desktop) 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. 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. This value can be viewed in the /etc/nagios/cgi.cfg file. Simply change the host check command to use check_host rather than check_ping. However, this can result in too high a CPU load on both the Nagios host and remote machine, and is not recommended. 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. Asking for help, clarification, or responding to other answers. Therefore I have done below workaround in client side nrpe.cfg file. There should be no reference to /usr/bin/ping in that output, even when failing. Monitoring Using Nagios", Expand section "3.1. Looking for job perks? By default the check_ping command will do the connection time out (if it is unable to reach the destination host) after 10 seconds. I also had same problem and the above answers did not work for me. In the following example, it sends 10 ICMP ECHO packets to the remote host before its output is measured. @MrCleanX - I've read a few blog posts suggesting I check that. 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. 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) They are: To make your life a bit easier, a few configuration tasks have already been done for you: The above-mentioned config files can be found in the /usr/local/nagios/etc/objects/ directory. Shared Filesystem Service (manila) Log Files, 1.1.14. Thanks for contributing an answer to Server Fault! Nagios: config ping times - Stack Overflow I can't find it though. Adjust this to say, 10. As they are critical infrastructure components, you'll no doubt want to monitor them in at least some basic manner. 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. This isn't advised at all, as checking this frequently can lead to a multitude of different issues. tar command with and without --absolute-names option. 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. This is specified in ms. 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-host-alive is defined in commands.cfg to use check_ping. If total energies differ across different software, how do I decide which software to use? 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. The Industry Standard In IT Infrastructure Monitoring. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. rev2023.4.21.43403. While there are certainly some differences in the functionality, the overall end result is the same. Some methods support checking multiple services at once. 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.
nagios check_ping define service
