Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Extracting arguments from a list of function calls. All other servicemarks and trademarks are the property of their respective owner. check-host-alive is defined in commands.cfg to use check_ping. How about saving the world? How do you Null an inherited service check in nagios? Testimonials I tried that as well, but ran into a different issue. The example below defines a new check_ssh_load command: # 'check_ssh_load' command definition define . 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. See Also: Plugins, Plugin API. Check WMI Plus includes a service module that can check if a service is stopped. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? Was Aristarchus the first to propose heliocentrism? 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". 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): I've taken a screenshot, and am updating the question with the screenshot. 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. Knowledge Base Check web-interface user name and password, and check basic configuration. Monitoring Using Nagios", Collapse section "3. Why did DOS-based Windows require HIMEM.SYS to boot? I also use it for IDRAC IPs on Dell Hardware so I can maintain the association and don't have to have a separate host. Now you can add some service definitions (to the same configuration file) to monitor different aspects of the switch. Additionally, you can have Nagios periodically execute commands to periocially process the performance data files (e.g. Which language's style guidelines should be used when writing code that is supposed to be called from another language? 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. Why does Acts not mention the deaths of Peter and Paul? Nagios provides complete monitoring of Ping - including reachability and packet loss. What does 'They're at four. 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. 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. News 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. rev2023.4.21.43403. Post If your switch or router supports SNMP, you can monitor a lot of information by using the check_snmp plugin. SSH can also be used to access remote Nagios plugins. Tell Nagios which hosts are being monitored. 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. I would suggest you to change the check_command to something like my-check-host-alive and to define my-check-host-alive in commands.cfg to use something like check_tcp. It's not them. 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 Tell Nagios which services are being monitored for each host. What does 'They're at four. Thanks for the post. 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. 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. This will exclude the zlinux host from the service check. Open nagios web interface and see the host is being pinged properly. 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. What differentiates living as mere roommates from living in a marriage-like relationship? 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. If it doesn't, skip this section. Plugin-specific data can include things like percent packet loss, free disk space, processor load, number of current users, etc. A boy can regenerate, so demons eat him for years. If you're processing performance data for a large number of hosts and services, you'll probably want Nagios to write performance data to files instead. 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. by tmcdonald Wed Aug 17, 2016 2:31 pm, Post It is not possible to set intervals of less then one minute with Nagios. 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. You'll need to create some object definitions in order to monitor a new router/switch. nagios-devel You can modify the definitions in these and other definitions to suit your needs better if you'd like. Videos What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? If you create the same check in the host cfg, then it'll override the hostgroup check. For the time being, just follow the directions outlined below and you'll be monitoring your network routers/switches in no time. What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? by Box293 Sun Aug 28, 2016 8:34 pm, Post Have you made sure that the nagios user can run the ping command? Could you add more details? What is the 'define host' entry for this host? Monitoring switches and routers can either be easy or more involved - depending on what equipment you have and what you want to monitor. Check WMI Plus includes a service module that can check if a service is running. This means if the check_ping does not get a result in 10 seconds, the command will timeout. 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. 1. There should be no reference to /usr/bin/ping in that output, even when failing. nagios (Last Notification: N/A (notification 0)). "Signpost" puzzle from Tatham's collection. Log Files for OpenStack Services", Collapse section "1.1. What is scrcpy OTG mode and how does it work? Anyway, if you're interested in testing throughput, there are MUCH better ways of going about it than relying on ICMP, which is the lowest priority traffic type on a network. 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! Connect and share knowledge within a single location that is structured and easy to search. Checking a service using SNMP is not very straight forward, checking a process is the best solution here, please refer to the Process Checks KB article. do you know of a way to "switch off" one of the checks inherited from the hostgroup? Apologies, mistyped. 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. Orthogonally defining services and contacts for a host/hostgroup? I'm trying to figure out how can I check a service and/or a host every 20 secs, then re-try every 10 secs, only to send a notification after 3 retries. Thanks for that. 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. 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). NRPE is for more complicated checks, where you need to run commands directly on the remote server. 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. NSClient++ includes a service module that can check if a service is stopped. How to Make a Black glass pass light through it? You can always comment these services out if they are no longer needed by prefacing each line with a '#' character. (3-30 sec interval checks). Monitoring Using the Telemetry Service", Collapse section "2. 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. 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. 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. 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. Thanks for contributing an answer to Stack Overflow! But, when you use IPv6 address, you should use -6 as shown below. Troubleshoot Instance Launching Errors in the Dashboard, 4.6. At a minimum, the following must be done: If the OpenStack cloud includes distributed hosts: /etc/nagios/objects/ObjectsDir/ObjectsFile.cfg. For situations, for example, where one particular Linux Server needs to have it's PING check threshold raised from the default. As of May 25th, 2018, all communications with Nagios Enterprises and its employees are covered under our new. Plugin-specific performance data (if available) can be obtained by using the $HOSTPERFDATA$ and $SERVICEPERFDATA$ macros. I've deployed a new instance of Nagios on a fresh install of CentOS 7 via the EPEL repository. There are several steps you'll need to follow in order to monitor a new router or switch. define service { use generic-service ; Name of service template to use host_name Host-1 service_description PING check_command check_nrpe!check_ping } define service { use . OpenStack Dashboard - Red Hat Access Tab", Collapse section "4.7. define service{ host_name linuxbox service_description PING check_command check_ping!200.0,80%!400.0,40% . } If total energies differ across different software, how do I decide which software to use? The object file localhost.cfg allows for parameters to be passed to check_ssh. The thing you post is a Nagios command. 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. check_command check_ping!100.0,20%!500.0,60% After some checking the issue further noticed that the reason is IP protocol. If it doesn't, install net-snmp and net-snmp-utils and recompile/reinstall the Nagios plugins. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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) Be aware that the service module is cAsE SeNsative, you can overcome this with the match= argument. 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. Up To: Contents 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. 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. 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. 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. That's it for the SNMP monitoring example. It will have quite a lot of load on the system as well. Include check_command with nagios/icinga alerts. QGIS automatic fill of the attribute table by expression. Once you've added the new host and service definitions to the switch.cfg file, you're ready to start monitoring the router/switch. You told Nagios to look to the /usr/local/nagios/etc/objects/switch.cfg to find additional object definitions. I checked log: /usr/local/nagios/var/nagios.log the interval between ping times is 90 seconds. Can you still use Commanders Strike if the only attack available to forego is an attack against an ally? Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? 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. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Media Coverage By default, when Nagios is installed, the default httpd user and password is: nagiosadmin / nagiosadmin. What is the Russian word for the color "teal"? Remote Logging Installation and Configuration", Expand section "2. Here's the service definition I use to monitor the bandwidth data that's stored in the log file. 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. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? As they are critical infrastructure components, you'll no doubt want to monitor them in at least some basic manner. How can I control PNP and NPN transistors together from one pin? How a top-ranked engineering school reimagined CS curriculum (Ep. 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. Why did US v. Assange skip the court of appeal? ", Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). I don't like it, from a security standpoint. 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 . Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? Remote Logging Installation and Configuration, 1.3.3. Contact Us, Awards If not, youll get an error. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Below are the command definitions for check-host-alive as well as check_ping. 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. I am currently running 3.4.1, so I would think this should be working. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? Nagios should be hosted on a securely locked down server, especially if security events are being monitored. The interval between checks in this example is 5 minutes (check_interval). 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. I was already tired of editing these humongous text files, and this just made it so easy. This should be specified as %age. He also rips off an arm to use as a sword. The first time you configure Nagios Core to monitor a network switch, you'll need to do a bit of extra work. I also had same problem and the above answers did not work for me. 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. To do this, you'll need to verify your configuration and restart Nagios Core. Two MacBook Pro with same model number (A1286) but different year. Simply change the host check command to use check_host rather than check_ping. The Industry Standard In IT Infrastructure Monitoring. Modify host_name appropriately. However, one server runs with much less free space than the norm. Looking for job perks? It's not them. rotate them) using the host_perfdata_file_processing_command and service_perfdata_file_processing_command options. How a top-ranked engineering school reimagined CS curriculum (Ep. "But not exactly"? 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 How to disable host checks of existing hosts in Nagios? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Add the following service definition to monitor the uptime of the switch. Here Host, warning and critical thresholds were passing by Nagios host as below. Because what you are showing is the command. ms|rta=0.627000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0. The OP is still lurking. Nagios checks are not run on an exact schedule. Thanks for contributing an answer to Unix & Linux Stack Exchange! There are no attachments for this article. If the OpenStack cloud is distributed across machines, the NPRE addon can be used to run access plugin information on those remote machines. By using decimals in your check_interval I have a feeling it's throwing the math off. Configure Nagios so that performance data is either written to files and/or processed by executing commands. 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. PerfParse), the addon may be expecting that the plugin returns performance data in a specific format.
Harrison Deal Car Explosion,
688372468f893e Mohawk High School Football Roster,
Articles N