The Nagios monitoring system can be used to provide monitoring and alerts for the OpenStack network and infrastructure. Eg. This might include things like service check latency (i.e. Monitoring Routers and Switches Nagios Core Documentation It is not possible to set intervals of less then one minute with Nagios. Support Plans Overriding Nagios hostgroup service with host service Why xargs does not process the last argument? 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. line, since nagios will substitute $HOSTADDRESS$ for the appropriate hosts ip/name. Check the documentation that comes with the addon for more information. There aren't really any inherent limitations on the format or content of the performance data. I also find it non-intuitive to have to maintain a list of exclusions separate to where the host itself is actually defined. How To Monitor Network Switch and Ports Using Nagios - The Geek Stuff Server Fault is a question and answer site for system and network administrators. Note: The Nagios daemon doesn't directly process plugin performance data, so it doesn't really care what the performance data looks like. do you know of a way to "switch off" one of the checks inherited from the hostgroup? See Also: Monitoring Publicly Available Services. The scheduling engine employs some tricks to keep checks from bunching up and causing CPU spikes, otherwise if you had all of your checks set to run every minute, you would have 59 seconds of nothing and then everything run at once. This value can be viewed in the /etc/nagios/cgi.cfg file. 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. I want to set interval between ping times is 10 seconds like below: But not exactly (about 90 seconds). The best answers are voted up and rise to the top, Not the answer you're looking for? How a top-ranked engineering school reimagined CS curriculum (Ep. by cornelp Wed Aug 17, 2016 8:32 am, Post Nagios Plugins does not include a service plugin however the linux-nrpe-agent does provide check_init_service. This isn't advised at all, as checking this frequently can lead to a multitude of different issues. The most flexible way to process performance data is by having Nagios execute commands (that you specify) to process or redirect the data for later processing by external applications. Engage with our Red Hat Product Security team, access security updates, and ensure your environments are not exposed to any known security vulnerabilities. It's not them. The "AVG" option tells it that it should use average bandwidth statistics. I don't like it, from a security standpoint. 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. 5 Nagios check_ping Command Examples to Monitor Remote Host Host is just like a computer; it can be a physical device or virtual. On the central Nagios server, in the commands.cfg configuration file, define the new checks. Remote server monitoring with Nagios | TechTarget However, it doesn't describe in which order to pass parameters. Connect and share knowledge within a single location that is structured and easy to search. You should also pass both warning and critical threshold limit. Asking for help, clarification, or responding to other answers. Arranging it this way allows me to only add custom services, and service checks that aren't the norm in the host definition. Some methods support checking multiple services at once. Be aware that the service module is cAsE SeNsative, you can overcome this with the match= argument. What were the poems other than those by Donne in the Melford Hall manuscript? How about saving the world? I had to rename them to txt as it would not allow the original ext. 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. NPCA includes a service module that can check if a service is stopped. 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 . The MRTG log file is stored in /var/lib/mrtg/192.168.1.253_1.log. 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. What is the symbol (which looks similar to an equals sign) called? Post The Nagios server will receive traffic from a broad scope of systems. Object definition files that are used to store information about items such as services or contact groups. Did the drapes in old theatres actually say "ASBESTOS" on them? Identity Service (keystone) Log Files, 1.1.12. rev2023.4.21.43403. - basically any type of metric that the plugin is measuring when it executes. Add the following service definition to monitor the uptime of the switch. I currently am experimenting with defining a set of services to all hosts in a hostgroup, this is working fine. You can modify the definitions in these and other definitions to suit your needs better if you'd like. What does 'They're at four. Asking for help, clarification, or responding to other answers. In the check_command directive of the service definition above, the "-C public" tells the plugin that the SNMP community name to be used is "public" and the "-o sysUpTime.0" indicates which OID should be checked. SSH can also be used to access remote Nagios plugins. I'm not much of a nagios expert, but I do love it. 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. Why does Acts not mention the deaths of Peter and Paul? 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. Asking for help, clarification, or responding to other answers. How about saving the world? If your switch or router supports SNMP, you can monitor a lot of information by using the check_snmp plugin. Find centralized, trusted content and collaborate around the technologies you use most. I find it very strange that there are entries in /usr/bin that normal users are not allowed to run? Configure Nagios so that performance data is either written to files and/or processed by executing commands. service_perfdata_file_processing_interval, Everything before the pipe character is considered to be the "normal" plugin output and will be stored in either the $HOSTOUTPUT$ or $SERVICEOUTPUT$ macro, Everything after the pipe character is considered to be the plugin-specific performance data and will be stored in the $HOSTPERFDATA$ or $SERVICEPERFDATA$ macro. Nagios checks are not run on an exact schedule. 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. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Short story about swapping bodies as a job; the person who hires the main character misuses his body. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. It's not them. 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. I am using nagios ver. For situations, for example, where one particular Linux Server needs to have it's PING check threshold raised from the default. By default the check_ping command will send 5 ICMP ECHO packets. Host or Service Check Interval (SOLVED) - Nagios Support Forum My /etc/nagios/objects/commands.cfg states, which defines the arguments in between the exclamation marks as in the documentation example you gave. If it doesn't, install net-snmp and net-snmp-utils and recompile/reinstall the Nagios plugins. 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. 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. The object file localhost.cfg allows for parameters to be passed to check_ssh. Browse other questions tagged. Modify host_name appropriately. Unfortunately, my host checks are failing (although my service checks are working perfectly fine). All OpenStack services can be reported, just ensure that a matching command is specified in the remote servers nrpe.cfg file. However, it doesn't describe in which order to pass parameters. Check web-interface user name and password, and check basic configuration. Events I can't find it though. 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! Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Now you can add some service definitions (to the same configuration file) to monitor different aspects of the switch. It also tells us that. Here you go. How can I control PNP and NPN transistors together from one pin? 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. # 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 . This should be specified as %age. The check_mrtgtraf plugin (which is included in the Nagios plugins distribution) allows you to do this. Nagios, the Nagios logo, and Nagios graphics are the servicemarks, trademarks, or registered trademarks owned by Nagios Enterprises. Did the drapes in old theatres actually say "ASBESTOS" on them? Which was the first Sci-Fi story to predict obnoxious "robo calls"? Up To: Contents Why does Acts not mention the deaths of Peter and Paul? Nagios - Hosts and Services - TutorialsPoint 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. 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. I'm sure the OP is well on to other things by now, but hopefully someone else who has this issue will benefit. NPCA allows you to check multiple services, here is an example that checks for some services that are running and some that are stopped. The "1000000,2000000" options are the warning thresholds (in bytes) for incoming and outgoing traffic rates respectively. What differentiates living as mere roommates from living in a marriage-like relationship? Our tech support team is happy to help you with any questions you might have. 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. 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%. Configure rsyslog on Individual Nodes, 2. Nagios services can have high CPU overhead if SSH is used. Why in the Sierpiski Triangle is this set being used as the example for the OSC and not a more "natural"? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. host_name server1. 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. Which language's style guidelines should be used when writing code that is supposed to be called from another language? define host { use windows-server host_name cielo01 alias cielo01 address cielo01 . Contact Us, Awards Adjust this to say, 10. Include check_command with nagios/icinga alerts. once I passed the correct IP protocol , It worked fine. If anyone has any advice on insights on how to get this working, I'd very much appreciate it! NSClient++ allows you to check multiple services, here is an example that checks for two services that are running. This document describes how you can monitor the status of network switches and routers. Database as a Service (trove) Log Files, 1.1.7. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. So, you really dont need to specify -4 (which is optional). What is Wario dropping at the end of Super Mario Land 2 and why? Once you've added the new host and service definitions to the switch.cfg file, you're ready to start monitoring the router/switch. This type of performance data is available for all checks that are performed. ', referring to the nuclear power plant in Ignalina, mean? by tmcdonald Wed Aug 17, 2016 2:31 pm, Post What is this brick with a round back and a stud on the side used for? I tried that as well, but ran into a different issue. Can you still use Commanders Strike if the only attack available to forego is an attack against an ally? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. NPCA includes a service module that can check if a service is running. 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. But when integrating with Nagios server, I could not able to pass this value as an argument. I can execute the check manually, at the nagios server (Ubuntu Desktop) It does seem to be registering on some level as in my Nagios logs I can see: If the host responds to the ping, then it is 'OK'. 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 and configure NRPE on each remote machine (that has services to be monitored). 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. So for ping alerts it should go to network@example.com and for swap it should goto storage@example.com. since there is no predefined argument to specify the port, like --port=$ARG1$ in the definition, but only a generic place holder. Service Checks - Nagios Support Then, in your check_interval change it to 3, and retry interval of 2. NSClient++ includes a service module that can check if a service is stopped. Nagios - how does native service such as check_ping monitor remote host Inquire today and let our Quickstart team help you get started with Nagios XI, Up To: Contents This is specified in ms. Thanks for the post. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? rev2023.4.21.43403. More expensive switches and routers have addresses assigned to them and can be monitored by pinging them or using SNMP to query status information. Keep your systems secure with Red Hat's specialized responses to security vulnerabilities. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. (3-30 sec interval checks). "Signpost" puzzle from Tatham's collection. Looking at the check_ssh man page doesn't seem to indicate in what order to place these switches You can define a command and use that command for your service. 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). Was Aristarchus the first to propose heliocentrism? To learn more, see our tips on writing great answers. 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'. After some checking the issue further noticed that the reason is IP protocol. Videos 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). 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. I was already tired of editing these humongous text files, and this just made it so easy. 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. Set up a hostgroup cfg file with the checks in it. Not the answer you're looking for? Nagios: config ping times - Stack Overflow You told Nagios to look to the /usr/local/nagios/etc/objects/switch.cfg to find additional object definitions. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? Performance Data - Nagios I can ping the nagios server and the nagios server is able to ping the server. . by Box293 Sun Aug 28, 2016 8:34 pm, Post That's it for the SNMP monitoring example. Check WMI Plus includes a service module that can check if a service is running. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. nagios-devel ms|rta=0.627000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0. Here Host, warning and critical thresholds were passing by Nagios host as below. What is the 'define host' entry for this host? 2. Contact us on our online support forum at https://support.nagios.com/forum/. What risks are you taking when "signing in with Google"? I'm a little bit wary of going to chmod the ping binary (which is what most blog posts have suggested). It will have quite a lot of load on the system as well. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? Millions of users and thousands of companies - ranging from Fortune 500s to small business owners - trust Nagios XI to get the job done. Learn more about Stack Overflow the company, and our products. 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. Nagios - Configure a hostgroup to include all the hosts of another group? Configuring remote service checks using nagios - Notes_Wiki Monitoring Using the Telemetry Service, 3.2.2. What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? snmpwalk -v1 -c public 192.168.1.253 -m ALL .1. Has the cause of a rocket failure ever been mis-identified, such that another launch failed due to the same problem? Hosts and service configurations are the building blocks of Nagios Core. For any support related questions please visit the Nagios Support Forums at: Article Number: 775 | Rating: Unrated | Last Updated by. In the following example, it sends 10 ICMP ECHO packets to the remote host before its output is measured. That configuration file already contains some sample host, hostgroup, and service definitions. Additional service files can be used, but they must be specified as a cfg_file parameter in the /etc/nagios/nagios.cfg file. I've deployed a new instance of Nagios on a fresh install of CentOS 7 via the EPEL repository. Make sure the plugin exists in /usr/local/nagios/libexec before you continue. by rkennedy Tue Aug 16, 2016 11:34 am, Post 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. Could you add more details? Nagios: Service dependency on same host for an entire hostgroup, Nagios/Icinga check of Windows disk space, wrong -l argument. If total energies differ across different software, how do I decide which software to use? I just mis-typed it here, sorry. This means if the check_ping does not get a result in 10 seconds, the command will timeout. But, when you use IPv6 address, you should use -6 as shown below. Why did US v. Assange skip the court of appeal? Making statements based on opinion; back them up with references or personal experience. 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). Remove the leading pound (#) sign from the following line in the main configuration file: What did you just do? Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. Create Service Definitions for Remote Services, 4.2. What is the symbol (which looks similar to an equals sign) called? Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. Plugin performance data is external data specific to the plugin used to perform the host or service check. Start check_tcp with -h to see the help for it. 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. How to disable host checks of existing hosts in Nagios? Check WMI Plus allows you to check multiple services, here is an example that checks for two services that are running. MIP Model with relaxed integer constraints takes longer to solve than normal model, why? Can you help me? Testimonials The check_init_service plugin does not support checking multiple services. For example, advice was given in one of the above links (second one) to do the following: In the service definition add a line under "hostgroup_name": Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. nagios (Last Notification: N/A (notification 0)). My issue is that I then want to be able to override these service definitions which have been included in the host, from the hostgroup. Configure rsyslog on the Centralized Logging Server, 1.3.4. Why are players required to record the moves in World Championship Classical games? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. As of May 25th, 2018, all communications with Nagios Enterprises and its employees are covered under our new. Read on for more information on how plugins can return performance data to Nagios for inclusion in the $HOSTPERFDATA$ and $SERVICEPERFDATA$ macros. That's where you'll be adding host and service definitions for routers and switches. Thanks for that. Media Coverage 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. It is great for things like number of services or what load or how much memory each machine has. Simply change the host check command to use check_host rather than check_ping. 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. If you like to change this, use -p option. What is the Russian word for the color "teal"? How a top-ranked engineering school reimagined CS curriculum (Ep. QGIS automatic fill of the attribute table by expression. "host_name !zlinux_hostname". "Signpost" puzzle from Tatham's collection, Using an Ohm Meter to test for bonding of a subpanel. ", Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). 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. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? NRPE and the Nagios plugins must be installed on each remote machine to be monitored. 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. Plugin-specific performance data (if available) can be obtained by using the $HOSTPERFDATA$ and $SERVICEPERFDATA$ macros.
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