Install the Nagios Service", Expand section "4.7. Maybe you could look there and get credit for the answer if you have ideas. service_description PING. Add a new host definition for the switch that you're going to monitor. I had to rename them to txt as it would not allow the original ext. Any check that you place in a hostgroup will apply to any host in that hostgroup (which you knew already). ", Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). nagios check_ping: Invalid hostname/address - Ask Ubuntu Contact Sales Use -H option to specify the hostname or the ip-address of the server for which you like to check the ping command output. 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. 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. Our tech support team is happy to help you with any questions you might have. Now you can add some service definitions (to the same configuration file) to monitor different aspects of the switch. QGIS automatic fill of the attribute table by expression. 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 commands that Nagios executes to process host and service performance data are determined by the host_perfdata_command and service_perfdata_command options, respectively. Install the Nagios Service", Collapse section "3.1. Was Aristarchus the first to propose heliocentrism? On what basis are pardoning decisions made by presidents or governors when exercising their pardoning power? 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. by cornelp Fri Aug 26, 2016 2:03 pm, Post 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! Any suggestions on how I can fix my check-host-alive command definition to work properly and evaluate the output of check_ping properly? Is there a plugin named check_hosts? 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. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? The Nagios server will receive traffic from a broad scope of systems. I tried that as well, but ran into a different issue. Database as a Service (trove) Log Files, 1.1.7. Plugin performance data is external data specific to the plugin used to perform the host or service check. But, when you use IPv6 address, you should use -6 as shown below. Short story about swapping bodies as a job; the person who hires the main character misuses his body. When the host goes down, no matter what numbers I use, It will not send an alert until 1.5 minutes later. To do this, you'll need to verify your configuration and restart Nagios Core. This means if the check_ping does not get a result in 10 seconds, the command will timeout. Videos Monitoring Routers and Switches - 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, Nagios failing restart with new service directove in localhost.cfg, nagios socket timeout error in master server, Nagios variable $HOSTNAME$ in service definition, Unable to read nagios exit status in nagios core. Connect and share knowledge within a single location that is structured and easy to search. The "5000000,5000000" are critical thresholds (in bytes) for incoming and outgoing traffic rates respectively. check_ping command is a Nagios plugin that is used to check the ping output of a remote server. 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. It will have quite a lot of load on the system as well. 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. Below are the command definitions for check-host-alive as well as check_ping. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Here Host, warning and critical thresholds were passing by Nagios host as below. Note: Replace "linksys-srw224p" in the example definitions below with the name you specified in the host_name directive of the host definition you just added. I've taken a screenshot, and am updating the question with the screenshot. It's not them. Why did US v. Assange skip the court of appeal? Here is a link to it's usage: http://nagiosplugins.org/man/check_http What is Wario dropping at the end of Super Mario Land 2 and why? The check_ping command just validates the availability of a system via an ICMP ping packet. 1. Documentation, Purchase Online 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. Plugin-specific performance data (if available) can be obtained by using the $HOSTPERFDATA$ and $SERVICEPERFDATA$ macros. Our Customers Check WMI Plus includes a service module that can check if a service is stopped. Nagios is composed of a server, plugins that report object/host information from both local and remote machines back to the server, a web interface, and configuration that ties all of it together. What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? However, I'd recommend waiting until you're more familiar with configuring Nagios Core before doing so. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. NSClient++ includes a service module that can check if a service is stopped. However, it doesn't describe in which order to pass parameters. However, if you are using an external addon to process the performance data (i.e. NRPE is for more complicated checks, where you need to run commands directly on the remote server. Nagios: How to determine parameter order check_ssh ms|rta=0.627000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0. Asking for help, clarification, or responding to other answers. At this point I think enabling debug mode and looking at the debug log will be required to understand what is going on. 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). define command { command_name check-host-alive command_line $USER1$/check_ping -t 10 -H $HOSTADDRESS$ -w 3000.0,80% -c 5000.0,100% -p 5 } The thing you post is a Nagios command. What is the 'define host' entry for this host? For the time being, just follow the directions outlined below and you'll be monitoring your network routers/switches in no time. Monitoring switches and routers can either be easy or more involved - depending on what equipment you have and what you want to monitor. I find it very strange that there are entries in /usr/bin that normal users are not allowed to run? What is Wario dropping at the end of Super Mario Land 2 and why? do you know of a way to "switch off" one of the checks inherited from the hostgroup? the '-t 10' is not the interval, but the timeout argument. Why in the Sierpiski Triangle is this set being used as the example for the OSC and not a more "natural"? The state information delivers "Usage: " which is an indicator that the parameters are wrong. 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. "Signpost" puzzle from Tatham's collection, What "benchmarks" means in "what are benchmarks for? It only takes a minute to sign up. 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. This should be specified as %age. Remotely monitor servers with the Nagios check_by_ssh plugin Be aware that the service module is cAsE SeNsative, you can overcome this with the match= argument. Up To: Contents 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' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. 2. If the host responds to the ping, then it is 'OK'. by tmcdonald Wed Aug 17, 2016 2:31 pm, Post How can I control PNP and NPN transistors together from one pin? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. However, it doesn't describe in which order to pass parameters. Add the following service definition to monitor the uptime of the switch. What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? In my localhost.cfg I have tried: check_ssh!xxx22!localhost . host_name server1. Nagios provides complete monitoring of Ping - including reachability and packet loss. 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. snmpwalk -v1 -c public 192.168.1.253 -m ALL .1. For this sort of problem I do this a lot. The "AVG" option tells it that it should use average bandwidth statistics.