linux - How to send alert in nagios for particular service to The format in which host and service performance data is written to those files is determined by the host_perfdata_file_template and service_perfdata_file_template options. Remove the leading pound (#) sign from the following line in the main configuration file: What did you just do? NSClient++ includes a service module that can check if a service is running. Monitoring Using the Telemetry Service", Expand section "3. 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 The thing you post is a Nagios command. The object file localhost.cfg allows for parameters to be passed to check_ssh. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? If it doesn't, skip this section. 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. 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). What is scrcpy OTG mode and how does it work? I currently am experimenting with defining a set of services to all hosts in a hostgroup, this is working fine. If you want to have more granular (free) monitoring, check out InfluxDB, Telegraf and Grafana. 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. Nagios - Define as service for all the members of a group *except* some hosts? 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. PerfParse), the addon may be expecting that the plugin returns performance data in a specific format. How to Make a Black glass pass light through it? OpenStack Dashboard - Red Hat Access Tab. In the following example, it will wait for 5 seconds before the connection time-out of the remote host. check-host-alive is defined in commands.cfg to use check_ping. ', referring to the nuclear power plant in Ignalina, mean? It seems that Nagios is not running the correct command. In your ping service definition use e.g. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Increase visibility into IT operations to detect and resolve technical issues before they impact your business. Here you go. While there are certainly some differences in the functionality, the overall end result is the same. Troubleshoot Identity Client (keystone) Connectivity Problems, 4.3. Linux is a registered trademark of Linus Torvalds. There are several steps you'll need to follow in order to monitor a new router or switch. Thanks for that. It seems to me that there has to be a safer way to do it. 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 can have Nagios write all host and service performance data directly to text files using the host_perfdata_file and service_perfdata_file options. 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. 2. Here's the service definition I use to monitor the bandwidth data that's stored in the log file. I'm a little bit wary of going to chmod the ping binary (which is what most blog posts have suggested). 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. by rkennedy Tue Aug 16, 2016 11:34 am, Post 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. Extracting arguments from a list of function calls. Thanks for contributing an answer to Server Fault! 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. How do you Null an inherited service check in nagios? How a top-ranked engineering school reimagined CS curriculum (Ep. Check web-interface user name and password, and check basic configuration. 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. by cornelp Fri Aug 26, 2016 2:03 pm, Post By default, when Nagios is installed, the default httpd user and password is: nagiosadmin / nagiosadmin. 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. There are a million things that can be monitored via SNMP, so its up to you to decide what you need and want to monitor. I did as you stated. Although admittedly, my analysis is primitive. nagios check_ping: Invalid hostname/address - Ask Ubuntu My linux box uses a nonstandard port for ssh. Browse other questions tagged. by cornelp Wed Aug 17, 2016 8:32 am, Post The OP is still lurking. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? NPCA includes a service module that can check if a service is stopped. It's not them. See Also: Plugins, Plugin API. I am currently running 3.4.1, so I would think this should be working. Contact Sales 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. The Nagios monitoring system can be used to provide monitoring and alerts for the OpenStack network and infrastructure. Remote Logging Installation and Configuration", Collapse section "1.3. : In your host template set a default value: In the host definition that should use a difference value set e.g. How a top-ranked engineering school reimagined CS curriculum (Ep. How to Make a Black glass pass light through it? 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. So, you really dont need to specify -4 (which is optional). 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! Nagios, the Nagios logo, and Nagios graphics are the servicemarks, trademarks, or registered trademarks owned by Nagios Enterprises. Server Fault is a question and answer site for system and network administrators. 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. The Industry Standard In IT Infrastructure Monitoring. check_ping command is a Nagios plugin that is used to check the ping output of a remote server. Install the Nagios Service", Collapse section "3.1. Why does Acts not mention the deaths of Peter and Paul? check_command check_ping!100.0,20%!500.0,60% News 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). You should also pass both warning and critical threshold limit. To learn more, see our tips on writing great answers. How about saving the world? Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? This same file can be used to add new OpenStack monitoring services. What is scrcpy OTG mode and how does it work? 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. 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! At a minimum, the following must be done: If the OpenStack cloud includes distributed hosts: /etc/nagios/objects/ObjectsDir/ObjectsFile.cfg. I find it very strange that there are entries in /usr/bin that normal users are not allowed to run? Thanks for the post. Thx. After some checking the issue further noticed that the reason is IP protocol. In my localhost.cfg I have tried: check_ssh!xxx22!localhost . Nagios Plugins does not include a service plugin however the linux-nrpe-agent does provide check_init_service. This might include things like service check latency (i.e. Make sure that you don't (re)start Nagios until the verification process completes without any errors! I'm sure the OP is well on to other things by now, but hopefully someone else who has this issue will benefit. Looking for job perks? All OpenStack services can be reported, just ensure that a matching command is specified in the remote servers nrpe.cfg file. What risks are you taking when "signing in with Google"? Here Host, warning and critical thresholds were passing by Nagios host as below. I am using nagios ver. 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. This will exclude the zlinux host from the service check. For situations, for example, where one particular Linux Server needs to have it's PING check threshold raised from the default. "Signpost" puzzle from Tatham's collection, What "benchmarks" means in "what are benchmarks for? Could you add more details? 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. NPCA allows you to check multiple services, here is an example that checks for some services that are running and some that are stopped. In addition, there are a number of points to review for optimal Nagios placement: NRPE (Nagios Remote Plugin Executor) plugins are compiled executables or scripts that are used to check the status of a hosts service, and report back to the Nagios service. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. You can modify the definitions in these and other definitions to suit your needs better if you'd like. If you like to change this, use -p option. Nagios - Hosts and Services - TutorialsPoint The MRTG log file is stored in /var/lib/mrtg/192.168.1.253_1.log. Connect and share knowledge within a single location that is structured and easy to search. Note: The Nagios daemon doesn't directly process plugin performance data, so it doesn't really care what the performance data looks like. Here's my basic C: drive space check. I'm not sure if this is common use or not, but this article blew my mind when it came to setting up the config files. Eg. The Nagios monitoring system can be used to provide monitoring and alerts for the OpenStack network and infrastructure. Is there another (safer) option, such as adding the Nagios user to ping's group or something? Email: sales@nagios.com Nagios provides complete monitoring of Ping including reachability and packet loss. 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. Adjust this to say, 10. Troubleshoot Keystone v3 Dashboard Authentication, 4.7. 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. My /etc/nagios/objects/commands.cfg states, which defines the arguments in between the exclamation marks as in the documentation example you gave. Can you help me? Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. Thanks for contributing an answer to Unix & Linux Stack Exchange! Up To: Contents 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. Engage with our Red Hat Product Security team, access security updates, and ensure your environments are not exposed to any known security vulnerabilities. with the check_snmp plugin and bandwidth (if you're using MRTG) with the check_mrtgtraf plugin. 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. 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? Plugin-specific data can include things like percent packet loss, free disk space, processor load, number of current users, etc. They're great. 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). 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. check_ping command is a Nagios plugin that is used to check the ping output of a remote server. I can't find it though. Processing Performance Data Using Commands. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. Remote Logging Installation and Configuration", Expand section "2. Nagios - Configure a hostgroup to include all the hosts of another group? 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. For this sort of problem I do this a lot. Asking for help, clarification, or responding to other answers. NSClient++ allows you to check multiple services, here is an example that checks for two services that are running. The first time you configure Nagios Core to monitor a network switch, you'll need to do a bit of extra work. 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 In the following example, it sends 10 ICMP ECHO packets to the remote host before its output is measured. Find centralized, trusted content and collaborate around the technologies you use most. 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) How can I control PNP and NPN transistors together from one pin? To do this, you'll need to verify your configuration and restart Nagios Core. 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. Data Processing (sahara) Log Files, 1.1.6. Some methods support checking multiple services at once. That configuration file already contains some sample host, hostgroup, and service definitions. For the time being, just follow the directions outlined below and you'll be monitoring your network routers/switches in no time. This isn't advised at all, as checking this frequently can lead to a multitude of different issues. Hosts and service configurations are the building blocks of Nagios Core. All other servicemarks and trademarks are the property of their respective owner. by rkennedy Tue Aug 16, 2016 4:51 pm, Post 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. However, it doesn't describe in which order to pass parameters. that are installed when you follow the quickstart. Configure Nagios to Monitor OpenStack Services, 3.2.5. 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. 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. Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. The "1000000,2000000" options are the warning thresholds (in bytes) for incoming and outgoing traffic rates respectively. 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): This should be specified as %age. On what basis are pardoning decisions made by presidents or governors when exercising their pardoning power? Everything in that folder should be at 0755. Nagios Monitoring Hosts with check_ping - Stack Overflow 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. Not the answer you're looking for? I put in ` check_ssh!--host=localhost!--port=xxx22` and nagios will start with, Nagios: How to determine parameter order check_ssh. 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. Our Customers Any suggestions on how I can fix my check-host-alive command definition to work properly and evaluate the output of check_ping properly? Why did DOS-based Windows require HIMEM.SYS to boot? 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). This is specified in ms. 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 . Set up a hostgroup cfg file with the checks in it. By default the check_ping command will send 5 ICMP ECHO packets. Host is just like a computer; it can be a physical device or virtual. This document describes how you can monitor the status of network switches and routers. He also rips off an arm to use as a sword. You could use "Custom Variable Macros" (http://nagios.sourceforge.net/docs/3_0/macros.html).
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