Check WMI Plus allows you to check multiple services, here is an example that checks for two services that are running. 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. Short story about swapping bodies as a job; the person who hires the main character misuses his body. What is the Russian word for the color "teal"? Connect and share knowledge within a single location that is structured and easy to search. My linux box uses a nonstandard port for ssh. ms|rta=0.627000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0. 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. Note: The Nagios daemon doesn't directly process plugin performance data, so it doesn't really care what the performance data looks like. Nagios XI is the easy-to-use, enterprise version of Nagios that features: Download a free 60-day trial of Nagios XI or give the online demo a spin. SSH can also be used to access remote Nagios plugins. "Signpost" puzzle from Tatham's collection. I did to interval of 3 and retry of 2. I had to rename them to txt as it would not allow the original ext. Bare Metal Provisioning (ironic) Log Files, 1.1.5. Inquire today and let our Quickstart team help you get started with Nagios XI, Up To: Contents Once you've added the new host and service definitions to the switch.cfg file, you're ready to start monitoring the router/switch. If anyone has any advice on insights on how to get this working, I'd very much appreciate it! What differentiates living as mere roommates from living in a marriage-like relationship? 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. Any complicated monitoring can be placed into a script, and then referred to in the command definition. The object file localhost.cfg allows for parameters to be passed to check_ssh. Configure Nagios so that performance data is either written to files and/or processed by executing commands. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. Why do men's bikes have high bars where you can hit your testicles while women's bikes have the bar much lower? 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). Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. Here you go. Troubleshoot Instance Launching Errors in the Dashboard, 4.6. 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). ', referring to the nuclear power plant in Ignalina, mean? After some checking the issue further noticed that the reason is IP protocol. Has the cause of a rocket failure ever been mis-identified, such that another launch failed due to the same problem? Nagios - Configure a hostgroup to include all the hosts of another group? rev2023.4.21.43403. service_description PING. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. Apologies, mistyped. A boy can regenerate, so demons eat him for years. Some cheaper "unmanaged" switches and hubs don't have IP addresses and are essentially invisible on your network, so there's not any way to monitor them. An example command definition that redirects service check performance data to a text file for later processing by another application is shown below: So for example, I'd like to have a host in the linux-server host group, which inherits several services (SSH, Disk, PING, etc), but for specific services I want to override with their own unique values, define a service specific to that host, with custom values. 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. My /etc/nagios/objects/commands.cfg states, which defines the arguments in between the exclamation marks as in the documentation example you gave. line, since nagios will substitute $HOSTADDRESS$ for the appropriate hosts ip/name. The check_mrtgtraf plugin (which is included in the Nagios plugins distribution) allows you to do this. The "1000000,2000000" options are the warning thresholds (in bytes) for incoming and outgoing traffic rates respectively. check_ping command is a Nagios plugin that is used to check the ping output of a remote server. The following are some possible error messages that you might get when you try to use check_ping command. Multiple lines of performace data (as well as normal text output) can be obtained from plugins, as described in the plugin API documentation. At this point I think enabling debug mode and looking at the debug log will be required to understand what is going on. It's not them. Media Coverage Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? What is the symbol (which looks similar to an equals sign) called? Start check_tcp with -h to see the help for it. This might include things like service check latency (i.e. 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. Simply change the host check command to use check_host rather than check_ping. NRPE and the Nagios plugins must be installed on each remote machine to be monitored. @MrCleanX - I've read a few blog posts suggesting I check that. I'm not much of a nagios expert, but I do love it. Although admittedly, my analysis is primitive. By using decimals in your check_interval I have a feeling it's throwing the math off. 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. Keep your systems secure with Red Hat's specialized responses to security vulnerabilities. Monitoring Using the Telemetry Service", Collapse section "2. rev2023.4.21.43403. But when integrating with Nagios server, I could not able to pass this value as an argument. The Nagios server will receive traffic from a broad scope of systems. Looking for job perks? Now you can add some service definitions (to the same configuration file) to monitor different aspects of the switch. 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 did as you stated. How about saving the world? More expensive switches and routers have addresses assigned to them and can be monitored by pinging them or using SNMP to query status information. When the host goes down, no matter what numbers I use, It will not send an alert until 1.5 minutes later. 1. What are the arguments for/against anonymous authorship of the Gospels, Generic Doubly-Linked-Lists C implementation. In my localhost.cfg I have tried: check_ssh!xxx22!localhost . Knowledge Base In the following example, it sends 10 ICMP ECHO packets to the remote host before its output is measured. Our tech support team is happy to help you with any questions you might have. If the OpenStack cloud is distributed across machines, the NPRE addon can be used to run access plugin information on those remote machines. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Actually called check_host, without the 's'. An example file format template for service performance data might look like this: By default, the text files will be opened in "append" mode. What is the symbol (which looks similar to an equals sign) called? 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. In the following example, it will wait for 5 seconds before the connection time-out of the remote host. What is Wario dropping at the end of Super Mario Land 2 and why? I am using nagios ver. How do you Null an inherited service check in nagios? The warning limit is 10ms RTA or 2% packet-loss. So the Nagios Core version is 3.5.1. 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. While there are certainly some differences in the functionality, the overall end result is the same. On the central Nagios server, in the commands.cfg configuration file, define the new checks. 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) Hosts and service configurations are the building blocks of Nagios Core. Browse other questions tagged. 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. 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. So in it's host cfg, I have: Now the service check is going to alert you for 80% and 90% for all hosts in the hostgroup, except for the host that you added the check with the change values in it. 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. 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. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? 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. Find centralized, trusted content and collaborate around the technologies you use most. NSClient++ includes a service module that can check if a service is stopped. At a minimum, the following must be done: If the OpenStack cloud includes distributed hosts: /etc/nagios/objects/ObjectsDir/ObjectsFile.cfg. Include check_command with nagios/icinga alerts. Arranging it this way allows me to only add custom services, and service checks that aren't the norm in the host definition. "But not exactly"? If you create the same check in the host cfg, then it'll override the hostgroup check. He also rips off an arm to use as a sword. 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. What is the 'define host' entry for this host? 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. Nagios Plugins does not include a service plugin however the linux-nrpe-agent does provide check_init_service. once I passed the correct IP protocol , It worked fine. 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. They're great. Monitoring Using Nagios", Collapse section "3. OpenStack Dashboard - Red Hat Access Tab", Collapse section "4.7. So for ping alerts it should go to network@example.com and for swap it should goto storage@example.com. Install the Nagios Service", Expand section "4.7. Check WMI Plus includes a service module that can check if a service is running. By default the check_ping command will send 5 ICMP ECHO packets. Remote Logging Installation and Configuration", Expand section "2. Log Files for OpenStack Services", Expand section "1.3. If the host responds to the ping, then it is 'OK'. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Understanding the probability of measurement w.r.t. Our Customers Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Community Support Forums For Nagios Open Source Projects, Community Support Forums For Nagios Commercial Products, https://assets.nagios.com/downloads/nag gmain.html. 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. Documentation, Purchase Online 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 . Monitoring switches and routers can either be easy or more involved - depending on what equipment you have and what you want to monitor. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. Troubleshoot Keystone v3 Dashboard Authentication, 4.7. Nagios provides complete monitoring of Ping including reachability and packet loss. Here's the service definition I use to monitor the bandwidth data that's stored in the log file. All OpenStack services can be reported, just ensure that a matching command is specified in the remote servers nrpe.cfg file. This is specified in ms. 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. That configuration file already contains some sample host, hostgroup, and service definitions. . by cornelp Tue Aug 16, 2016 10:43 am, Post 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. The following installation procedure installs: Install the required packages as the root user, using the yum command: If any of the packages are not immediately available (for example, gd-devel or gcc), you might have to enable the optional Red Hat channel using subscription-manager: Consider deploying Nagios to a server that is external to the OpenStack environment, allowing it to receive diagnostic information in the event of system issues. If you dont pass any arguments to the check_ping command, it will show all available options as shown below. I currently am experimenting with defining a set of services to all hosts in a hostgroup, this is working fine. Contact us on our online support forum at https://support.nagios.com/forum/. Eg. I also find it non-intuitive to have to maintain a list of exclusions separate to where the host itself is actually defined. What is scrcpy OTG mode and how does it work? 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. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? Make sure the plugin exists in /usr/local/nagios/libexec before you continue. NSClient++ allows you to check multiple services, here is an example that checks for two services that are running. By default, when Nagios is installed, the default httpd user and password is: nagiosadmin / nagiosadmin. How to Make a Black glass pass light through it? How to disable host checks of existing hosts in Nagios? is there such a thing as "right to be heard"? Add a new host definition for the switch that you're going to monitor. Orthogonally defining services and contacts for a host/hostgroup? Linux is a registered trademark of Linus Torvalds. Troubleshoot Identity Client (keystone) Connectivity Problems, 4.3. If Nagios Core can't get a response to its check, then it will flag the state of the service as CRITICAL, and will try again up to two more times before sending a notification. Connect and share knowledge within a single location that is structured and easy to search. 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. 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. Nagios Plugins does not include a service plugin however the linux-nrpe-agent does provide check_init_service. Remote Logging Installation and Configuration, 1.3.3. Are you talking about check interval? Contact Sales 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. 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 "10" option causes the plugin to return a CRITICAL state if the MRTG log file is older than 10 minutes (it should be updated every 5 minutes). It is great for things like number of services or what load or how much memory each machine has. NPCA includes a service module that can check if a service is stopped. If you like to change this, use -t option. All other servicemarks and trademarks are the property of their respective owner. I am currently running 3.4.1, so I would think this should be working. 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. Is there a plugin named check_hosts? Nagios, the Nagios logo, and Nagios graphics are the servicemarks, trademarks, or registered trademarks owned by Nagios Enterprises. Install and configure NRPE on each remote machine (that has services to be monitored). English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus". (3-30 sec interval checks). What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? How a top-ranked engineering school reimagined CS curriculum (Ep. This means if the check_ping does not get a result in 10 seconds, the command will timeout. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port.
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