Tell Nagios which hosts are being monitored. Configure Nagios so that performance data is either written to files and/or processed by executing commands. So for ping alerts it should go to network@example.com and for swap it should goto storage@example.com. Testimonials What should I follow, if two altimeters show different altitudes? By default, when Nagios is installed, the default httpd user and password is: nagiosadmin / nagiosadmin. What does 'They're at four. Is there a plugin named check_hosts? In the example above, the "/var/lib/mrtg/192.168.1.253_1.log" option that gets passed to the check_local_mrtgtraf command tells the plugin which MRTG log file to read from. since there is no predefined argument to specify the port, like --port=$ARG1$ in the definition, but only a generic place holder. Events NSClient++ includes a service module that can check if a service is running. Has the cause of a rocket failure ever been mis-identified, such that another launch failed due to the same problem? Once you've added the new host and service definitions to the switch.cfg file, you're ready to start monitoring the router/switch. by cornelp Tue Aug 16, 2016 1:47 pm, Post Website Copyright 2009-2023 Nagios Enterprises, LLC. Videos I checked log: /usr/local/nagios/var/nagios.log the interval between ping times is 90 seconds. 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. Plugin performance data is external data specific to the plugin used to perform the host or service check. By default, it will use IPv4. Object definition files that are used to store information about items such as services or contact groups. Browse other questions tagged. What are the arguments for/against anonymous authorship of the Gospels, Generic Doubly-Linked-Lists C implementation. There aren't really any inherent limitations on the format or content of the performance data. Tell Nagios which services are being monitored for each host. by cornelp Fri Aug 26, 2016 2:03 pm, Post Arranging it this way allows me to only add custom services, and service checks that aren't the norm in the host definition. If it doesn't, install net-snmp and net-snmp-utils and recompile/reinstall the Nagios plugins. Nagios Plugins does not include a service plugin however the linux-nrpe-agent does provide check_init_service. How to Make a Black glass pass light through 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. For situations, for example, where one particular Linux Server needs to have it's PING check threshold raised from the default. Nagios provides complete monitoring of Ping - including reachability and packet loss. In my localhost.cfg I have tried: where xxx22 is the actual port. To do this, you'll need to verify your configuration and restart Nagios Core. Support forum for Nagios Core, Nagios Plugins, NCPA, NRPE, NSCA, NDOUtils and more. It only takes a minute to sign up. Thanks for contributing an answer to Stack Overflow! I find it very strange that there are entries in /usr/bin that normal users are not allowed to run? NPCA includes a service module that can check if a service is stopped. This is specified in ms. Processing Performance Data Using Commands. By default the check_ping command will send 5 ICMP ECHO packets. More expensive switches and routers have addresses assigned to them and can be monitored by pinging them or using SNMP to query status information. He also rips off an arm to use as a sword. 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 . density matrix. I put in ` check_ssh!--host=localhost!--port=xxx22` and nagios will start with, Nagios: How to determine parameter order check_ssh. It's not them. Asking for help, clarification, or responding to other answers. 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. Plugin-specific performance data is optional and may not be supported by all plugins. do you know of a way to "switch off" one of the checks inherited from the hostgroup? Therefore I have done below workaround in client side nrpe.cfg file. The object file localhost.cfg allows for parameters to be passed to 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: how "late" was the service check from its scheduled execution time) and the number of seconds a host or service check took to execute. Could you add more details? Thanks for contributing an answer to Server Fault! the '-t 10' is not the interval, but the timeout argument. 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. Support Plans "But not exactly"? Monitoring Using Nagios", Collapse section "3. Note: The Nagios daemon doesn't directly process plugin performance data, so it doesn't really care what the performance data looks like. 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 to disable host checks of existing hosts in Nagios? Nagios, the Nagios logo, and Nagios graphics are the servicemarks, trademarks, or registered trademarks owned by Nagios Enterprises. 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. Assuming we are using the host definition given earlier and a check_ping command defined like this: define command { command_name check_ping command_line /usr/local/nagios/libexec/check_ping -H $HOSTADDRESS$ -w $ARG1$ -c $ARG2$ } The expanded/final command line to be executed for the service's check command would look like this: The check_init_service plugin does not support checking multiple services. that are installed when you follow the quickstart. 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. You told Nagios to look to the /usr/local/nagios/etc/objects/switch.cfg to find additional object definitions. You'll need to create some object definitions in order to monitor a new router/switch. Any complicated monitoring can be placed into a script, and then referred to in the command definition. Plugin-specific data can include things like percent packet loss, free disk space, processor load, number of current users, etc. Contact us on our online support forum at https://support.nagios.com/forum/. NRPE is for more complicated checks, where you need to run commands directly on the remote server. Switches and routers can be monitored easily by "pinging" them to determine packet loss, RTA, etc. Thx. 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. I'm sure the OP is well on to other things by now, but hopefully someone else who has this issue will benefit. Error 1: If you dont specify warning threshold limit, youll get the following error message: Error 2: If you dont specify % at the end of threshold limit pair, youll get the following error message: Error 3: If you dont specify critical threshold limit, youll get the following error message: Error 4: If the warning threshold limit values is greater than the critical limit value, youll get the following error message: Error 5: If the specify -6 and give a IPv4 address, youll get the following error message: Next post: 8 Linux Bash Shell Readline Bind Command Examples, Previous post: How to Change RabbitMQ Log Level in rabbitmq.config from INFO to ERROR, Home | Linux 101 Hacks Table of Contents | Contact | Email | RSS | Copyright 20092022 Ramesh Natarajan All rights reserved | Terms of Service, 8 Linux Bash Shell Readline Bind Command Examples, How to Change RabbitMQ Log Level in rabbitmq.config from INFO to ERROR, Round trip average, which is called as RTA. Contact Sales PerfParse), the addon may be expecting that the plugin returns performance data in a specific format. Why did DOS-based Windows require HIMEM.SYS to boot? This might include things like service check latency (i.e. This tutorial explains how you can use check_ping command with some basic examples. All other servicemarks and trademarks are the property of their respective owner. Thanks for the post. If it doesn't, skip this section. Thanks for contributing an answer to Unix & Linux Stack Exchange! I could not found the ping on /usr/bin/ping. Take a look at the main config documentation: So, I was able to make all the necessary changes. Thanks. The sample configuration entries below reference objects that are defined in the sample config files (commands.cfg, templates.cfg, etc.) 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. I don't like it, from a security standpoint. Thanks for contributing an answer to Stack Overflow! However, one server runs with much less free space than the norm. Log Files for OpenStack Services", Expand section "1.3. How about saving the world? 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. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? 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. check_ping command is a Nagios plugin that is used to check the ping output of a remote server. 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. 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'. You can modify the definitions in these and other definitions to suit your needs better if you'd like. Connect and share knowledge within a single location that is structured and easy to search. NSClient++ includes a service module that can check if a service is stopped. That configuration file already contains some sample host, hostgroup, and service definitions. 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. How a top-ranked engineering school reimagined CS curriculum (Ep. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. - basically any type of metric that the plugin is measuring when it executes. I am currently running 3.4.1, so I would think this should be working. @MrCleanX - I've read a few blog posts suggesting I check that. Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey, Can execute nagios ssh check manually but get 126/127 out of bounds error from nagios, Different Nagios email notifications for different services, Nagios host notifications not sending via email or logging, Nagios - "Unable to send check for host" or "run check for service". What is the Russian word for the color "teal"? Eg. 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. 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. What is Wario dropping at the end of Super Mario Land 2 and why? Why do men's bikes have high bars where you can hit your testicles while women's bikes have the bar much lower? Making statements based on opinion; back them up with references or personal experience. Nagios: Service dependency on same host for an entire hostgroup, Nagios/Icinga check of Windows disk space, wrong -l argument. I am using nagios ver. Configure rsyslog on Individual Nodes, 2. host_name server1. Find A Partner, Phone: 1-888-NAGIOS-1 Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? NPCA allows you to check multiple services, here is an example that checks for some services that are running and some that are stopped. 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. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Remember, you only need to do this for the *first* switch you monitor. 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. 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. Can you still use Commanders Strike if the only attack available to forego is an attack against an ally? Actually called check_host, without the 's'. 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. Because what you are showing is the command. What were the poems other than those by Donne in the Melford Hall manuscript? I just mis-typed it here, sorry. So, you really dont need to specify -4 (which is optional). NPCA includes a service module that can check if a service is running. At this point I think enabling debug mode and looking at the debug log will be required to understand what is going on. :) This is an excellent post. On the remote machine, and as the root user, execute the following: After the installation, you can view all available plugins in the /usr/lib64/nagios/plugins/ directory. by tmcdonald Wed Aug 17, 2016 2:31 pm, Post Add a new host definition for the switch that you're going to monitor. My linux box uses a nonstandard port for ssh. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. When the host goes down, no matter what numbers I use, It will not send an alert until 1.5 minutes later. This means if the check_ping does not get a result in 10 seconds, the command will timeout. If you want to have more granular (free) monitoring, check out InfluxDB, Telegraf and Grafana. There are several steps you'll need to follow in order to monitor a new router or switch. It also tells us that. NSClient++ includes a service module that can check if a service is running. check_command check_ping!100.0,20%!500.0,60% once I passed the correct IP protocol , It worked fine. MIP Model with relaxed integer constraints takes longer to solve than normal model, why? 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. Use -H option to specify the hostname or the ip-address of the server for which you like to check the ping command output. 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. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? Extracting arguments from a list of function calls. Which language's style guidelines should be used when writing code that is supposed to be called from another language? So the Nagios Core version is 3.5.1. 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. 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. English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus". To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Learn more about Stack Overflow the company, and our products. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The "5000000,5000000" are critical thresholds (in bytes) for incoming and outgoing traffic rates respectively. : In your host template set a default value: In the host definition that should use a difference value set e.g. Make sure the plugin exists in /usr/local/nagios/libexec before you continue. 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. Hosts and service configurations are the building blocks of Nagios Core. What is scrcpy OTG mode and how does it work? There should be no reference to /usr/bin/ping in that output, even when failing. Can you help me? ', referring to the nuclear power plant in Ignalina, mean? Knowledge Base That's it for the SNMP monitoring example.