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) Services are those which are used by Nagios to check something about a host. Can you help me? Because what you are showing is the command. Careers. 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 . Like i have written below two command one for ping and one for swap. So the Nagios Core version is 3.5.1. Troubleshoot Identity Client (keystone) Connectivity Problems, 4.3. Why did DOS-based Windows require HIMEM.SYS to boot? Server Fault is a question and answer site for system and network administrators. Media Coverage . Start check_tcp with -h to see the help for it. In your ping service definition use e.g. 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): by rkennedy Tue Aug 16, 2016 4:51 pm, Post All OpenStack services can be reported, just ensure that a matching command is specified in the remote servers nrpe.cfg file. Plugin-specific data can include things like percent packet loss, free disk space, processor load, number of current users, etc. Two MacBook Pro with same model number (A1286) but different year, Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). 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. If the host responds to the ping, then it is 'OK'. The check_ping command just validates the availability of a system via an ICMP ping packet. density matrix. If you want to process the performance data that is available from Nagios and the plugins, you'll need to do the following: Read on for information on how to process performance data by writing to files or executing commands. 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 positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? 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. The interval between checks in this example is 5 minutes (check_interval). Thanks for contributing an answer to Stack Overflow! This might include things like service check latency (i.e. NSClient++ includes a service module that can check if a service is running. So, you really dont need to specify -4 (which is optional). In my example, I'm monitoring one of the ports on a Linksys switch. 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. Thanks for that. This type of performance data is available for all checks that are performed. 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. For any support related questions please visit the Nagios Support Forums at: Article Number: 775 | Rating: Unrated | Last Updated by. NRPE and the Nagios plugins must be installed on each remote machine to be monitored. 1. Simply change the host check command to use check_host rather than check_ping. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Why in the Sierpiski Triangle is this set being used as the example for the OSC and not a more "natural"? The example below defines a new check_ssh_load command: # 'check_ssh_load' command definition define . Change the host_name, alias, and address fields to appropriate values for the switch. For this sort of problem I do this a lot. 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. If not, youll get an error. If youve installed Nagios from source, youll find all the default plugins under /usr/local/nagios/libexec directory. Learn more about Stack Overflow the company, and our products. This is specified in ms. 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). 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). Monitoring Using Nagios", Expand section "3.1. check_command check_ping!100.0,20%!500.0,60% 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. Be aware that the service module is cAsE SeNsative, you can overcome this with the match= argument. How a top-ranked engineering school reimagined CS curriculum (Ep. In my localhost.cfg I have tried: where xxx22 is the actual port. My /etc/nagios/objects/commands.cfg states, which defines the arguments in between the exclamation marks as in the documentation example you gave. 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. Remove the leading pound (#) sign from the following line in the main configuration file: What did you just do? I was fairly certain that running chmod U+s /usr/bin/ping would solve the issue, but I was (and still am) wary about chmod'ing system files. I did as you stated. If the OpenStack cloud is distributed across machines, the NPRE addon can be used to run access plugin information on those remote machines. Certification 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! The sample configuration entries below reference objects that are defined in the sample config files (commands.cfg, templates.cfg, etc.) Troubleshoot OpenStack Networking Issues, 4.4. So for ping alerts it should go to network@example.com and for swap it should goto storage@example.com. 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'. : In your host template set a default value: In the host definition that should use a difference value set e.g. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. Are you talking about check interval? Did the drapes in old theatres actually say "ASBESTOS" on them? Nagios checks are not run on an exact schedule. 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. Configure rsyslog on the Centralized Logging Server, 1.3.4. by cornelp Mon Aug 29, 2016 8:42 am, Powered by phpBB Forum Software phpBB Limited. Monitoring Using the Telemetry Service, 3.2.2. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Documentation, Purchase Online Make sure the plugin exists in /usr/local/nagios/libexec before you continue. 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. Additionally, you can have Nagios periodically execute commands to periocially process the performance data files (e.g. 4.0.8 . By using decimals in your check_interval I have a feeling it's throwing the math off. 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. See Also: Plugins, Plugin API. The first time you configure Nagios Core to monitor a network switch, you'll need to do a bit of extra work. Up To: Contents Monitoring switches and routers can either be easy or more involved - depending on what equipment you have and what you want to monitor. An example command definition that redirects service check performance data to a text file for later processing by another application is shown below: Remote Logging Installation and Configuration", Expand section "2. You can modify the definitions in these and other definitions to suit your needs better if you'd like. By default the check_ping command will do the connection time out (if it is unable to reach the destination host) after 10 seconds. 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 . MIP Model with relaxed integer constraints takes longer to solve than normal model, why? It seems that Nagios is not running the correct command. In my localhost.cfg I have tried: check_ssh!xxx22!localhost . If it doesn't, install net-snmp and net-snmp-utils and recompile/reinstall the Nagios plugins. Install and configure NRPE on each remote machine (that has services to be monitored). To learn more, see our tips on writing great answers. @JimBlack - Well, that's the error I'm seeing. How to Make a Black glass pass light through it? ', referring to the nuclear power plant in Ignalina, mean? Looking for job perks? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. If this is the *first* switch you're monitoring, you can simply modify the sample service definition in switch.cfg. Website Copyright 2009-2023 Nagios Enterprises, LLC. 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. 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. You'll need to let the check_mrtgtraf plugin know what log file the MRTG data is being stored in, along with thresholds, etc. Looking for job perks? 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. Multiple lines of performace data (as well as normal text output) can be obtained from plugins, as described in the plugin API documentation. 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. Open nagios web interface and see the host is being pinged properly. Thanks for contributing an answer to Unix & Linux Stack Exchange! Troubleshoot Instance Launching Errors in the Dashboard, 4.6. All rights reserved. Making statements based on opinion; back them up with references or personal experience. I am using nagios ver. Increase visibility into IT operations to detect and resolve technical issues before they impact your business. What is this brick with a round back and a stud on the side used for? do you know of a way to "switch off" one of the checks inherited from the hostgroup? rotate them) using the host_perfdata_file_processing_command and service_perfdata_file_processing_command options. Remote Logging Installation and Configuration", Collapse section "1.3. by rkennedy Tue Aug 16, 2016 11:34 am, Post You could use "Custom Variable Macros" (http://nagios.sourceforge.net/docs/3_0/macros.html). 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. At a minimum, the following must be done: If the OpenStack cloud includes distributed hosts: /etc/nagios/objects/ObjectsDir/ObjectsFile.cfg. You'll need to create some object definitions in order to monitor a new router/switch. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? Any complicated monitoring can be placed into a script, and then referred to in the command definition. Nagios is the most popular tool which is used to monitor hosts and services running in your IT infrastructure. The following are some possible error messages that you might get when you try to use check_ping 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. Inquire today and let our Quickstart team help you get started with Nagios XI, Up To: Contents However, I'd recommend waiting until you're more familiar with configuring Nagios Core before doing so. If you dont pass any arguments to the check_ping command, it will show all available options as shown below. NPCA includes a service module that can check if a service is running. 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. But it doesn't identify that as the port. 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. Testimonials It does seem to be registering on some level as in my Nagios logs I can see: Read on for more information on how plugins can return performance data to Nagios for inclusion in the $HOSTPERFDATA$ and $SERVICEPERFDATA$ macros. The check_init_service plugin does not support checking multiple services. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The Nagios server will receive traffic from a broad scope of systems. This means if the check_ping does not get a result in 10 seconds, the command will timeout. Plugin-specific performance data is optional and may not be supported by all plugins. define service{ host_name linuxbox service_description PING check_command check_ping!200.0,80%!400.0,40% . } rev2023.4.21.43403. Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. check_ping command is a Nagios plugin that is used to check the ping output of a remote server. 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 "-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. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. How about saving the world? Host or Service Check Interval (SOLVED) - Nagios Support Forum QGIS automatic fill of the attribute table by expression. How to Make a Black glass pass light through it? The OP is still lurking. What are the arguments for/against anonymous authorship of the Gospels, Generic Doubly-Linked-Lists C implementation. Tell Nagios which services are being monitored for each host. Videos I changed the Nagios cfg file interval_length to 10 and the host file to 20 and 10. Install the Nagios Service", Collapse section "3.1. Support Plans To subscribe to this RSS feed, copy and paste this URL into your RSS reader.