Additionally, you can have Nagios periodically execute commands to periocially process the performance data files (e.g. Log Files for OpenStack Services", Expand section "1.3. 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. The interval at which these commands are executed are governed by the host_perfdata_file_processing_interval and service_perfdata_file_processing_interval options, respectively. Nagios Monitoring Hosts with check_ping - Stack Overflow Check WMI Plus includes a service module that can check if a service is stopped. At this point I think enabling debug mode and looking at the debug log will be required to understand what is going on. Why did US v. Assange skip the court of appeal? Tell Nagios which services are being monitored for each host. 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. What are the arguments for/against anonymous authorship of the Gospels, Generic Doubly-Linked-Lists C implementation. Use -H option to specify the hostname or the ip-address of the server for which you like to check the ping command output. 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. The check_snmp plugin will only get compiled and installed if you have the net-snmp and net-snmp-utils packages installed on your system. Host or Service Check Interval (SOLVED) - Nagios Support Forum 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). Unfortunately, my host checks are failing (although my service checks are working perfectly fine). : In your host template set a default value: In the host definition that should use a difference value set e.g. The check_ping command just validates the availability of a system via an ICMP ping packet. In your ping service definition use e.g. Videos It seems that Nagios is not running the correct command. check-host-alive is defined in commands.cfg to use check_ping. Nagios checks are not run on an exact schedule. I also find it non-intuitive to have to maintain a list of exclusions separate to where the host itself is actually defined. service_description PING. I could not found the ping on /usr/bin/ping. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Email: [email protected] On what basis are pardoning decisions made by presidents or governors when exercising their pardoning power? If not, youll get an error. Connect and share knowledge within a single location that is structured and easy to search. do you know of a way to "switch off" one of the checks inherited from the hostgroup? Up To: Contents Configure Nagios to Monitor OpenStack Services, 3.2.5. I find it very strange that there are entries in /usr/bin that normal users are not allowed to run? There are no attachments for this article. At a minimum, Nagios plugins must return a single line of human-readable text that indicates the status of some type of measurable data. See Also: Monitoring Publicly Available Services. Any complicated monitoring can be placed into a script, and then referred to in the command definition. What you show for 'Status Information' is not what it should look like. Arranging it this way allows me to only add custom services, and service checks that aren't the norm in the host definition. Take a look at the main config documentation: So, I was able to make all the necessary changes. It will have quite a lot of load on the system as well. Why are players required to record the moves in World Championship Classical games? It's not running 'on' the remote host - the check_ping command is running a ping on the nagios server against the remote host. There should be no reference to /usr/bin/ping in that output, even when failing. NSClient++ includes a service module that can check if a service is stopped. Add the following service definition to monitor the uptime of the switch. Asking for help, clarification, or responding to other answers. Nagios provides complete monitoring of Ping including reachability and packet loss. Log Files for Supporting Services, 1.3. Nagios provides complete monitoring of Ping - including reachability and packet loss. 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. 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. Why did DOS-based Windows require HIMEM.SYS to boot? 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). The Nagios monitoring system can be used to provide monitoring and alerts for the OpenStack network and infrastructure. 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 Make a Black glass pass light through it? To define the check interval, you need to look at the host (or service) configuration file. the '-t 10' is not the interval, but the timeout argument. 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) by rkennedy Tue Aug 16, 2016 11:34 am, Post This means if the check_ping does not get a result in 10 seconds, the command will timeout. Add a new host definition for the switch that you're going to monitor. 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). How about saving the world? Is there a plugin named check_hosts? Identity Service (keystone) Log Files, 1.1.12. In my example, I'm monitoring one of the ports on a Linksys switch. What are the arguments for/against anonymous authorship of the Gospels, Embedded hyperlinks in a thesis or research paper. How a top-ranked engineering school reimagined CS curriculum (Ep. Tell Nagios which hosts are being monitored. This is specified in ms. For situations, for example, where one particular Linux Server needs to have it's PING check threshold raised from the default. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? 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. 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. You can always comment these services out if they are no longer needed by prefacing each line with a '#' character. I can execute the check manually, at the nagios server (Ubuntu Desktop) Why did US v. Assange skip the court of appeal? 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. Check WMI Plus allows you to check multiple services, here is an example that checks for two services that are running. Here Host, warning and critical thresholds were passing by Nagios host as below. Once you've added the new host and service definitions to the switch.cfg file, you're ready to start monitoring the router/switch. However, it doesn't describe in which order to pass parameters. The following installation procedure installs: nagios Nagios program that monitors hosts and services on the network, and which can send email or page alerts when a problem arises and when a problem is resolved. 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. If the OpenStack cloud is distributed across machines, the NPRE addon can be used to run access plugin information on those remote machines. Engage with our Red Hat Product Security team, access security updates, and ensure your environments are not exposed to any known security vulnerabilities. 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. Make sure the plugin exists in /usr/local/nagios/libexec before you continue. While there are certainly some differences in the functionality, the overall end result is the same. But when integrating with Nagios server, I could not able to pass this value as an argument. 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 . However, in the end, that's what I did - and it works. Switches and routers can be monitored easily by "pinging" them to determine packet loss, RTA, etc. by cornelp Mon Aug 29, 2016 8:42 am, Powered by phpBB Forum Software phpBB Limited. 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. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? What is this brick with a round back and a stud on the side used for? You'll need to create some object definitions in order to monitor a new router/switch. 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. Change how Nagios determines if server is offline? English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus". 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. Linux is a registered trademark of Linus Torvalds. An example command definition that redirects service check performance data to a text file for later processing by another application is shown below: I am using nagios ver. The hyperbolic space is a conformally compact Einstein manifold. NPCA allows you to check multiple services, here is an example that checks for some services that are running and some that are stopped. I'm not much of a nagios expert, but I do love it. So the Nagios Core version is 3.5.1. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. For any support related questions please visit the Nagios Support Forums at: Article Number: 775 | Rating: Unrated | Last Updated by. check_command check_ping!100.0,20%!500.0,60% Services are those which are used by Nagios to check something about a host. What is the Russian word for the color "teal"? Remotely monitor servers with the Nagios check_by_ssh plugin Troubleshoot Instance Launching Errors in the Dashboard, 4.6. In the following example, it sends 10 ICMP ECHO packets to the remote host before its output is measured. The sample configuration entries below reference objects that are defined in the sample config files (commands.cfg, templates.cfg, etc.) Which language's style guidelines should be used when writing code that is supposed to be called from another language? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. I also had same problem and the above answers did not work for me. Why xargs does not process the last argument? line, since nagios will substitute $HOSTADDRESS$ for the appropriate hosts ip/name. See this page for details on it's usage: http://nagiosplugins.org/man/check_ping Instead, I believe you'll need to use the check_http command to verify the web server is responding. 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. 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. Nagios: Service dependency on same host for an entire hostgroup, Nagios/Icinga check of Windows disk space, wrong -l argument. Remote Logging Installation and Configuration", Collapse section "1.3. Share Improve this answer Follow answered Feb 10, 2011 at 16:13 rems However, if you are using an external addon to process the performance data (i.e. Configure Nagios so that performance data is either written to files and/or processed by executing commands. Why does Acts not mention the deaths of Peter and Paul? By default, when Nagios is installed, the default httpd user and password is: nagiosadmin / nagiosadmin. It only takes a minute to sign up. You can modify the definitions in these and other definitions to suit your needs better if you'd like. As they are critical infrastructure components, you'll no doubt want to monitor them in at least some basic manner. What is the 'define host' entry for this host? Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? Uploaded the 2 files you requested. 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. This means if the check_ping does not get a result in 10 seconds, the command will timeout. Events 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. tar command with and without --absolute-names option. Check the documentation that comes with the addon for more information. By using decimals in your check_interval I have a feeling it's throwing the math off. 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. 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. This tutorial explains how you can use check_ping command with some basic examples. Ping Monitoring - Nagios Remember, you only need to do this for the *first* switch you monitor. 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. Eg. 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. NPCA includes a service module that can check if a service is stopped. Actually called check_host, without the 's'. rev2023.4.21.43403. NRPE and the Nagios plugins must be installed on each remote machine 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. To learn more, see our tips on writing great answers. Troubleshoot OpenStack Networking Issues, 4.4. once I passed the correct IP protocol , It worked fine. If the host responds to the ping, then it is 'OK'. Remote Logging Installation and Configuration, 1.3.3. The thing you post is a Nagios command. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Knowledge Base 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. 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 Because what you are showing is the command. Install the Nagios Service", Collapse section "3.1. . by cornelp Fri Aug 26, 2016 2:03 pm, Post 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. 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": After some checking the issue further noticed that the reason is IP protocol. 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. Making statements based on opinion; back them up with references or personal experience. The best answers are voted up and rise to the top, Not the answer you're looking for? Thx. Could you add more details? QGIS automatic fill of the attribute table by expression. Have you made sure that the nagios user can run the ping command? By default the check_ping command will send 5 ICMP ECHO packets. Why do men's bikes have high bars where you can hit your testicles while women's bikes have the bar much lower? 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. 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'. 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. Not the answer you're looking for? Any suggestions of what I can look at, I am out of ideas. I tried that as well, but ran into a different issue. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Careers. If this is the *first* switch you're monitoring, you can simply modify the sample service definition in switch.cfg. "But not exactly"? I can't find it though. Here you go. The state information delivers "Usage: " which is an indicator that the parameters are wrong. 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 hyperbolic space is a conformally compact Einstein manifold. Nagios, the Nagios logo, and Nagios graphics are the servicemarks, trademarks, or registered trademarks owned by Nagios Enterprises. Troubleshoot Networks and Routes Tab Display Issues in the Dashboard, 4.5. It also tells us that. I was already tired of editing these humongous text files, and this just made it so easy. 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. snmpwalk -v1 -c public 192.168.1.253 -m ALL .1. Nagios: config ping times - Stack Overflow You should also pass both warning and critical threshold limit. The example below defines a new check_ssh_load command: # 'check_ssh_load' command definition define . Why does Acts not mention the deaths of Peter and Paul?
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nagios check_ping define service