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. 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. This type of performance data is available for all checks that are performed. I currently am experimenting with defining a set of services to all hosts in a hostgroup, this is working fine. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Arranging it this way allows me to only add custom services, and service checks that aren't the norm in the host definition. I did to interval of 3 and retry of 2. Making statements based on opinion; back them up with references or personal experience. 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). The Nagios monitoring system can be used to provide monitoring and alerts for the OpenStack network and infrastructure. Check WMI Plus allows you to check multiple services, here is an example that checks for two services that are running. Make sure that you don't (re)start Nagios until the verification process completes without any errors! I can't remember when (or why) I started using check_host, but that's indeed what I'm currently using. 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. Thanks for contributing an answer to Unix & Linux Stack Exchange! He also rips off an arm to use as a sword. If it doesn't, skip this section. Two MacBook Pro with same model number (A1286) but different year. :) This is an excellent post. 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. What should I follow, if two altimeters show different altitudes? do you know of a way to "switch off" one of the checks inherited from the hostgroup? But, when you use IPv6 address, you should use -6 as shown below. How to Make a Black glass pass light through it? : In your host template set a default value: In the host definition that should use a difference value set e.g. To learn more, see our tips on writing great answers. 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 rkennedy Tue Aug 16, 2016 4:51 pm, Post The first time you configure Nagios Core to monitor a network switch, you'll need to do a bit of extra work. What are the arguments for/against anonymous authorship of the Gospels, Generic Doubly-Linked-Lists C implementation. At a minimum, the following must be done: If the OpenStack cloud includes distributed hosts: /etc/nagios/objects/ObjectsDir/ObjectsFile.cfg. 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. You told Nagios to look to the /usr/local/nagios/etc/objects/switch.cfg to find additional object definitions. # Service definition to ping the switch using check_ping define service{ use generic-service hostgroup_name switches service_description PING check_command check_ping!200.0,20%!600.0,60% normal_check_interval 5 retry_check_interval 1 } # Service definition to monitor switch uptime using check_snmp define service{ use generic-service hostgroup . Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? - basically any type of metric that the plugin is measuring when it executes. You'll need to let the check_mrtgtraf plugin know what log file the MRTG data is being stored in, along with thresholds, etc. Object definition files that are used to store information about items such as services or contact groups. Install the Nagios Service", Collapse section "3.1. Start check_tcp with -h to see the help for it. Note: The Nagios daemon doesn't directly process plugin performance data, so it doesn't really care what the performance data looks like. There are two basic categories of performance data that can be obtained from Nagios: Check performance data is internal data that relates to the actual execution of a host or service check. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Troubleshoot Instance Launching Errors in the Dashboard, 4.6. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. I tried that as well, but ran into a different issue. Which language's style guidelines should be used when writing code that is supposed to be called from another language? Be aware that the service module is cAsE SeNsative, you can overcome this with the match= argument. 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. Videos Find A Partner, Phone: 1-888-NAGIOS-1 This should be specified as %age. What is the symbol (which looks similar to an equals sign) called? For any support related questions please visit the Nagios Support Forums at: Article Number: 775 | Rating: Unrated | Last Updated by. If this is the *first* switch you're monitoring, you can simply modify the sample host definition in switch.cfg. The "1000000,2000000" options are the warning thresholds (in bytes) for incoming and outgoing traffic rates respectively. 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. An example command definition that redirects service check performance data to a text file for later processing by another application is shown below: The thing you post is a Nagios command. Thanks. Linux is a registered trademark of Linus Torvalds. Now you can add some service definitions (to the same configuration file) to monitor different aspects of the switch. How to Make a Black glass pass light through it? Log Files for Supporting Services, 1.3. Create Service Definitions for Remote Services, 4.2. The plugin returns a CRITICAL state if the service is not started. Why did US v. Assange skip the court of appeal? The check_ping command just validates the availability of a system via an ICMP ping packet. 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. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? I did as you stated. with the check_snmp plugin and bandwidth (if you're using MRTG) with the check_mrtgtraf plugin. This document describes how you can monitor the status of network switches and routers. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Thx. "Signpost" puzzle from Tatham's collection, What "benchmarks" means in "what are benchmarks for? Contact us on our online support forum at https://support.nagios.com/forum/. This isn't advised at all, as checking this frequently can lead to a multitude of different issues. 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. Two MacBook Pro with same model number (A1286) but different year, Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). Additionally, you can have Nagios periodically execute commands to periocially process the performance data files (e.g. 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. Percentage of packet loss, which is called pl. NPCA allows you to check multiple services, here is an example that checks for some services that are running and some that are stopped. See Also: Plugins, Plugin API. Why in the Sierpiski Triangle is this set being used as the example for the OSC and not a more "natural"? What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? Share Improve this answer Follow answered Feb 10, 2011 at 16:13 rems Tell Nagios which services are being monitored for each host. Testimonials Database as a Service (trove) Log Files, 1.1.7. On the central Nagios server, in the commands.cfg configuration file, define the new checks. Take a look at the main config documentation: So, I was able to make all the necessary changes. It's not running 'on' the remote host - the check_ping command is running a ping on the nagios server against the remote host. Here is a link to it's usage: http://nagiosplugins.org/man/check_http However, it doesn't describe in which order to pass parameters. Use -H option to specify the hostname or the ip-address of the server for which you like to check the ping command output. by cornelp Mon Aug 29, 2016 8:42 am, Powered by phpBB Forum Software phpBB Limited. Data Processing (sahara) Log Files, 1.1.6. If security segmentation is a requirement, then this would be considered a privileged system, subject to additional firewall rules than what would apply to an OpenStack node. rev2023.4.21.43403. However, it doesn't describe in which order to pass parameters. by cornelp Mon Aug 29, 2016 8:08 am, Post Contact Sales Which was the first Sci-Fi story to predict obnoxious "robo calls"? 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. Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. There are several steps you'll need to follow in order to monitor a new router or switch. 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. Any suggestions on how I can fix my check-host-alive command definition to work properly and evaluate the output of check_ping properly? How do you Null an inherited service check in nagios? Did the drapes in old theatres actually say "ASBESTOS" on them? Mine always starts with either "PING: OK" or "PING: CRITICAL". Check web-interface user name and password, and check basic configuration. since there is no predefined argument to specify the port, like --port=$ARG1$ in the definition, but only a generic place holder. I put in ` check_ssh!--host=localhost!--port=xxx22` and nagios will start with, Nagios: How to determine parameter order check_ssh. rev2023.4.21.43403. Why do men's bikes have high bars where you can hit your testicles while women's bikes have the bar much lower? Hosts and service configurations are the building blocks of Nagios Core. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The hyperbolic space is a conformally compact Einstein manifold. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Not the answer you're looking for? Actually called check_host, without the 's'. NRPE and the Nagios plugins must be installed on each remote machine to be monitored. 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. What is scrcpy OTG mode and how does it work? 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 Configuration is below, I don't see how it can be wrong as I copied it from server and simply changed the server name. Certification by Box293 Sun Aug 28, 2016 8:34 pm, Post That's it for the SNMP monitoring example. The check_mrtgtraf plugin (which is included in the Nagios plugins distribution) allows you to do this. Why does Acts not mention the deaths of Peter and Paul? I am using nagios ver. So the Nagios Core version is 3.5.1. 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 state information delivers "Usage: " which is an indicator that the parameters are wrong. Once you've added the new host and service definitions to the switch.cfg file, you're ready to start monitoring the router/switch. So, you really dont need to specify -4 (which is optional). Asking for help, clarification, or responding to other answers. how "late" was the service check from its scheduled execution time) and the number of seconds a host or service check took to execute. Log Files for OpenStack Services", Collapse section "1.1. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Maybe you could look there and get credit for the answer if you have ideas. service_description PING. More expensive switches and routers have addresses assigned to them and can be monitored by pinging them or using SNMP to query status information. I find it very strange that there are entries in /usr/bin that normal users are not allowed to run? If you create the same check in the host cfg, then it'll override the hostgroup check. 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. Monitoring Using the Telemetry Service", Collapse section "2. An example file format template for service performance data might look like this: By default, the text files will be opened in "append" mode. 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. If this is the *first* switch you're monitoring, you can simply modify the sample service definition in switch.cfg. That's where you'll be adding host and service definitions for routers and switches. Nagios servers may receive a considerable amount of network traffic, resulting in resource contention. The critical limit is 20ms or 5% packet loss. 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. 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 By default the check_ping command will send 5 ICMP ECHO packets. For example: Each defined command can then be specified in the services.cfg file on the Nagios monitoring server. Remote Logging Installation and Configuration, 1.3.3. 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 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. How to Make a Black glass pass light through it? If it doesn't, install net-snmp and net-snmp-utils and recompile/reinstall the Nagios plugins. Eg. 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. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? Support Plans What is this brick with a round back and a stud on the side used for? (3-30 sec interval checks). 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. For the *first* router/switch you monitor, you can simply modify the sample host and service definitions in that file, rather than creating new ones. the '-t 10' is not the interval, but the timeout argument. 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. MIP Model with relaxed integer constraints takes longer to solve than normal model, why? The hyperbolic space is a conformally compact Einstein manifold. My /etc/nagios/objects/commands.cfg states, which defines the arguments in between the exclamation marks as in the documentation example you gave. Monitoring Using Nagios", Collapse section "3. Is there a plugin named check_hosts? What you show for 'Status Information' is not what it should look like. 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. Here Host, warning and critical thresholds were passing by Nagios host as below. 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! Short story about swapping bodies as a job; the person who hires the main character misuses his body. Browse other questions tagged. This will exclude the zlinux host from the service check. 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. Increased server, services, and application availability, Fast detection of network outages and protocol failures. This is specified in ms. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. ms|rta=0.627000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0. I just mis-typed it here, sorry. 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 tmcdonald Wed Aug 17, 2016 2:31 pm, Post is there such a thing as "right to be heard"? After some checking the issue further noticed that the reason is IP protocol. It is not possible to set intervals of less then one minute with Nagios. . 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. Although admittedly, my analysis is primitive. 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). 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. Monitoring Using the Telemetry Service", Expand section "3. 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%. Can you help me? I was already tired of editing these humongous text files, and this just made it so easy. Nagios: Service dependency on same host for an entire hostgroup, Nagios/Icinga check of Windows disk space, wrong -l argument. Extracting arguments from a list of function calls. ', referring to the nuclear power plant in Ignalina, mean? Therefore I have done below workaround in client side nrpe.cfg file. 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. However, I'd recommend waiting until you're more familiar with configuring Nagios Core before doing so. 1. All other servicemarks and trademarks are the property of their respective owner. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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 snmpwalk -v1 -c public 192.168.1.253 -m ALL .1. "Signpost" puzzle from Tatham's collection. Connect and share knowledge within a single location that is structured and easy to search. 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. However, if you are using an external addon to process the performance data (i.e. Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey, Nagios host notifications not sending via email or logging, Using Nagios check_log command doesn't work, Nagios: How to check service three times a day, nagios - nsclient - nsca - host_check message. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. However, this can result in too high a CPU load on both the Nagios host and remote machine, and is not recommended. 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. Orthogonally defining services and contacts for a host/hostgroup? What is the 'define host' entry for this host? How a top-ranked engineering school reimagined CS curriculum (Ep. 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. Check the documentation that comes with the addon for more information. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? Which language's style guidelines should be used when writing code that is supposed to be called from another language? density matrix. I want to set interval between ping times is 10 seconds like below: But not exactly (about 90 seconds). I can execute the check manually, at the nagios server (Ubuntu Desktop) The interval between checks in this example is 5 minutes (check_interval). 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.
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nagios check_ping define service