Install the Nagios Service", Expand section "4.7. The check_mrtgtraf plugin (which is included in the Nagios plugins distribution) allows you to do this. Troubleshoot OpenStack Networking Issues, 4.4. 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. However, it doesn't describe in which order to pass parameters. The best answers are voted up and rise to the top, Not the answer you're looking for? Understanding the probability of measurement w.r.t. Read on for more information on how plugins can return performance data to Nagios for inclusion in the $HOSTPERFDATA$ and $SERVICEPERFDATA$ macros. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? Videos Make sure that you don't (re)start Nagios until the verification process completes without any errors! Nagios servers may receive a considerable amount of network traffic, resulting in resource contention. To learn more, see our tips on writing great answers. I had to rename them to txt as it would not allow the original ext. I am currently running 3.4.1, so I would think this should be working. However, one server runs with much less free space than the norm. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. nagios (Last Notification: N/A (notification 0)). Configure rsyslog on Individual Nodes, 2. This will exclude the zlinux host from the service check. Tell Nagios which services are being monitored for each host. But ultimately, does not work as if I check the "performance data" of the service check results, I can see in there that the threshold included in the data is that of the group check, not the host check. Increase visibility into IT operations to detect and resolve technical issues before they impact your business. What is the symbol (which looks similar to an equals sign) called? What are the arguments for/against anonymous authorship of the Gospels, Generic Doubly-Linked-Lists C implementation. rev2023.4.21.43403. Looking for job perks? Bare Metal Provisioning (ironic) Log Files, 1.1.5. Modify host_name appropriately. An example file format template for service performance data might look like this: By default, the text files will be opened in "append" mode. See Also: Monitoring Publicly Available Services. You told Nagios to look to the /usr/local/nagios/etc/objects/switch.cfg to find additional object definitions. . Monitoring Using the Telemetry Service, 3.2.2. The Nagios server will receive traffic from a broad scope of systems. I'm not much of a nagios expert, but I do love it. Not the answer you're looking for? Plugin-specific performance data (if available) can be obtained by using the $HOSTPERFDATA$ and $SERVICEPERFDATA$ macros. 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. OpenStack Dashboard - Red Hat Access Tab. Shared Filesystem Service (manila) Log Files, 1.1.14. Processing Performance Data Using Commands. Data Processing (sahara) Log Files, 1.1.6. Support Plans Why did DOS-based Windows require HIMEM.SYS to boot? 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. NPCA includes a service module that can check if a service is running. since there is no predefined argument to specify the port, like --port=$ARG1$ in the definition, but only a generic place holder. Post What differentiates living as mere roommates from living in a marriage-like relationship? So the Nagios Core version is 3.5.1. 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. Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? Simply change the host check command to use check_host rather than check_ping. See Also: Plugins, Plugin API. by Box293 Sun Aug 28, 2016 8:34 pm, Post 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. Troubleshoot Networks and Routes Tab Display Issues in the Dashboard, 4.5. That configuration file already contains some sample host, hostgroup, and service definitions. If you want to ensure that a specific port/interface on the switch is in an up state, you could add a service definition like this: In the example above, the "-o ifOperStatus.1" refers to the OID for the operational status of port 1 on the switch. 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. There aren't really any inherent limitations on the format or content of the performance data. Within the Nagios Web GUI / Dashboard, if I drill down into a Host page with the "Host State Information", I see this being reported for "Status Information" (IP address removed): Status Information: /usr/bin/ping -n -U -w 30 -c 5 {my-host-ip-address}, CRITICAL - Could not interpret output from ping command. NPCA includes a service module that can check if a service is stopped. Create Service Definitions for Remote Services, 4.2. 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. How to disable host checks of existing hosts in Nagios? The "AVG" option tells it that it should use average bandwidth statistics. 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. There are those who will say this isn't a good option because of the ability to range the check_ping command, but it should be remembered that host checks aren't even executed until all service checks for a given host have failed. Add the following service definition to monitor the uptime of the switch. Nagios - Configure a hostgroup to include all the hosts of another group? Monitoring Using Nagios", Expand section "3.1. Keep your systems secure with Red Hat's specialized responses to security vulnerabilities. Find centralized, trusted content and collaborate around the technologies you use most. Which was the first Sci-Fi story to predict obnoxious "robo calls"? 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. Asking for help, clarification, or responding to other answers. On what basis are pardoning decisions made by presidents or governors when exercising their pardoning power? The thing you post is a Nagios command. Use -H option to specify the hostname or the ip-address of the server for which you like to check the ping command output. Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. QGIS automatic fill of the attribute table by expression. Arranging it this way allows me to only add custom services, and service checks that aren't the norm in the host definition. Nagios provides complete monitoring of Ping - including reachability and packet loss. The following are some possible error messages that you might get when you try to use check_ping command. How a top-ranked engineering school reimagined CS curriculum (Ep. There should be no reference to /usr/bin/ping in that output, even when failing. Millions of users and thousands of companies - ranging from Fortune 500s to small business owners - trust Nagios XI to get the job done. Although admittedly, my analysis is primitive. 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. 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 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. Not the answer you're looking for? the '-t 10' is not the interval, but the timeout argument. Asking for help, clarification, or responding to other answers. 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. 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. Hosts and service configurations are the building blocks of Nagios Core. Asking for help, clarification, or responding to other answers. Connect and share knowledge within a single location that is structured and easy to search. How about saving the world? Change the host_name, alias, and address fields to appropriate values for the switch. For this sort of problem I do this a lot. They're great. is there such a thing as "right to be heard"? Connect and share knowledge within a single location that is structured and easy to search. NSClient++ allows you to check multiple services, here is an example that checks for two services that are running. Plugin-specific data can include things like percent packet loss, free disk space, processor load, number of current users, etc. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. I don't like it, from a security standpoint. What were the poems other than those by Donne in the Melford Hall manuscript? 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. I currently am experimenting with defining a set of services to all hosts in a hostgroup, this is working fine. rev2023.4.21.43403. 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. 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. 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 this is the *first* switch you're monitoring, you can simply modify the sample host definition in switch.cfg. Log Files for Supporting Services, 1.3. 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. Nagios services can have high CPU overhead if SSH is used. What are the arguments for/against anonymous authorship of the Gospels, Embedded hyperlinks in a thesis or research paper. The first time you configure Nagios Core to monitor a network switch, you'll need to do a bit of extra work. Add OpenStack monitoring to the local server. To define the check interval, you need to look at the host (or service) configuration file. If this is the *first* switch you're monitoring, you can simply modify the sample service definition in switch.cfg. I find it very strange that there are entries in /usr/bin that normal users are not allowed to run? 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. Orthogonally defining services and contacts for a host/hostgroup? Share Improve this answer Follow answered Feb 10, 2011 at 16:13 rems You could use "Custom Variable Macros" (http://nagios.sourceforge.net/docs/3_0/macros.html). Troubleshoot Identity Client (keystone) Connectivity Problems, 4.3. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. This is specified in ms. Any check that you place in a hostgroup will apply to any host in that hostgroup (which you knew already). The warning limit is 10ms RTA or 2% packet-loss. 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). I also find it non-intuitive to have to maintain a list of exclusions separate to where the host itself is actually defined. If youve installed Nagios from source, youll find all the default plugins under /usr/local/nagios/libexec directory. The check_init_service plugin does not support checking multiple services. The MRTG log file is stored in /var/lib/mrtg/192.168.1.253_1.log. 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. Be aware that the service module is cAsE SeNsative, you can overcome this with the match= argument. Testimonials :) This is an excellent post. 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. What is Wario dropping at the end of Super Mario Land 2 and why? Benefits Implementing effective Ping monitoring with Nagios offers the following benefits: Increased server, services, and application availability Fast detection of network outages and protocol failures Solutions There are no attachments for this article. Below is the full define host {} template I'm using: For anyone else who runs into this issue, there's another option than changing permissions on ping. Connect and share knowledge within a single location that is structured and easy to search. 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. by cornelp Tue Aug 16, 2016 1:47 pm, Post Up To: Contents The best answers are voted up and rise to the top, Not the answer you're looking for? It also tells us that. If you like to change this, use -p option. - basically any type of metric that the plugin is measuring when it executes. Remote Logging Installation and Configuration", Expand section "2. In my localhost.cfg I have tried: check_ssh!xxx22!localhost . A boy can regenerate, so demons eat him for years. To learn more, see our tips on writing great answers. 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. Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Remote Logging Installation and Configuration, 1.3.3. 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. Have you made sure that the nagios user can run the ping command? "But not exactly"? Making statements based on opinion; back them up with references or personal experience. Nagios should be hosted on a securely locked down server, especially if security events are being monitored. It is great for things like number of services or what load or how much memory each machine has. rev2023.4.21.43403. by rkennedy Tue Aug 16, 2016 11:34 am, Post Asking for help, clarification, or responding to other answers. 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": Open nagios web interface and see the host is being pinged properly. 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. This same file can be used to add new OpenStack monitoring services. Thanks for that. density matrix. Set up a hostgroup cfg file with the checks in it. NRPE is for more complicated checks, where you need to run commands directly on the remote server. Contact us on our online support forum at https://support.nagios.com/forum/. What is this brick with a round back and a stud on the side used for? What is the symbol (which looks similar to an equals sign) called? Why does Acts not mention the deaths of Peter and Paul? You should also pass both warning and critical threshold limit. Log Files for OpenStack Services", Expand section "1.3. At a minimum, Nagios plugins must return a single line of human-readable text that indicates the status of some type of measurable data. 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. Log Files for OpenStack Services", Collapse section "1.1. How to Make a Black glass pass light through it? that are installed when you follow the quickstart. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. If the OpenStack cloud is distributed across machines, the NPRE addon can be used to run access plugin information on those remote machines. define service{ host_name linuxbox service_description PING check_command check_ping!200.0,80%!400.0,40% . } Uploaded the 2 files you requested. Browse other questions tagged. As they are critical infrastructure components, you'll no doubt want to monitor them in at least some basic manner. It only takes a minute to sign up. Nagios: Service dependency on same host for an entire hostgroup, Nagios/Icinga check of Windows disk space, wrong -l argument. My linux box uses a nonstandard port for ssh. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. by cornelp Mon Aug 29, 2016 8:42 am, Powered by phpBB Forum Software phpBB Limited. Nagios provides complete monitoring of Ping including reachability and packet loss. Configure rsyslog on the Centralized Logging Server, 1.3.4. I checked log: /usr/local/nagios/var/nagios.log the interval between ping times is 90 seconds. The check_ping command just validates the availability of a system via an ICMP ping packet. Making statements based on opinion; back them up with references or personal experience. Tikz: Numbering vertices of regular a-sided Polygon, English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus", The hyperbolic space is a conformally compact Einstein manifold. @MrCleanX - I've read a few blog posts suggesting I check that. All rights reserved. Everything in that folder should be at 0755. 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. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. However, in the end, that's what I did - and it works. 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. For example: Each defined command can then be specified in the services.cfg file on the Nagios monitoring server. The "1000000,2000000" options are the warning thresholds (in bytes) for incoming and outgoing traffic rates respectively. 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). Add the following service definition in order to monitor packet loss and round trip average between the Nagios host and the switch every 5 minutes under normal conditions. 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. check_ping command is a Nagios plugin that is used to check the ping output of a remote server. It is not possible to set intervals of less then one minute with Nagios. by cornelp Wed Aug 17, 2016 8:32 am, Post Check WMI Plus allows you to check multiple services, here is an example that checks for two services that are running. 2. What is Wario dropping at the end of Super Mario Land 2 and why? There are several steps you'll need to follow in order to monitor a new router or switch. UNIX is a registered trademark of The Open Group. Our tech support team is happy to help you with any questions you might have. 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) 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. Remote Logging Installation and Configuration", Collapse section "1.3. 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). Here's my basic C: drive space check. 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's where you'll be adding host and service definitions for routers and switches. 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. Maybe you could look there and get credit for the answer if you have ideas. The nagios standard services such as PING, and check_users work, but check_ssh remains in an UNKNOWN state from the very beginning. check-host-alive is defined in commands.cfg to use check_ping. 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. It will have quite a lot of load on the system as well. Include check_command with nagios/icinga alerts. Install the Nagios Service", Collapse section "3.1. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. However, it doesn't describe in which order to pass parameters. Below are the command definitions for check-host-alive as well as check_ping. But, when you use IPv6 address, you should use -6 as shown below.