"Signpost" puzzle from Tatham's collection. 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. The Nagios monitoring system can be used to provide monitoring and alerts for the OpenStack network and infrastructure. 4.0.8 . 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. The hyperbolic space is a conformally compact Einstein manifold. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? I had to rename them to txt as it would not allow the original ext. The "AVG" option tells it that it should use average bandwidth statistics. Plugin performance data is external data specific to the plugin used to perform the host or service check. 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. Documentation, Purchase Online is there such a thing as "right to be heard"? Nagios servers may receive a considerable amount of network traffic, resulting in resource contention. I don't like it, from a security standpoint. Why in the Sierpiski Triangle is this set being used as the example for the OSC and not a more "natural"? Here you go. Can you help me? If it doesn't, skip this section. Read on for more information on how plugins can return performance data to Nagios for inclusion in the $HOSTPERFDATA$ and $SERVICEPERFDATA$ macros. Contact Us, Awards MIP Model with relaxed integer constraints takes longer to solve than normal model, why? If total energies differ across different software, how do I decide which software to use? It only takes a minute to sign up. Has the cause of a rocket failure ever been mis-identified, such that another launch failed due to the same problem? Host is just like a computer; it can be a physical device or virtual. Our tech support team is happy to help you with any questions you might have. Although admittedly, my analysis is primitive. The warning limit is 10ms RTA or 2% packet-loss. Additionally, you can have Nagios periodically execute commands to periocially process the performance data files (e.g. Install the Nagios Service", Expand section "4.7. What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? What are the arguments for/against anonymous authorship of the Gospels, Embedded hyperlinks in a thesis or research paper. Object definition files that are used to store information about items such as services or contact groups. To learn more, see our tips on writing great answers. However, one server runs with much less free space than the norm. Inquire today and let our Quickstart team help you get started with Nagios XI, Up To: Contents More expensive switches and routers have addresses assigned to them and can be monitored by pinging them or using SNMP to query status information. the '-t 10' is not the interval, but the timeout argument. This should be specified as %age. You told Nagios to look to the /usr/local/nagios/etc/objects/switch.cfg to find additional object definitions. . All other servicemarks and trademarks are the property of their respective owner. 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). I am using nagios ver. "host_name !zlinux_hostname". how "late" was the service check from its scheduled execution time) and the number of seconds a host or service check took to execute. check-host-alive is defined in commands.cfg to use check_ping. check_ping command is a Nagios plugin that is used to check the ping output of a remote server. 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): How about saving the world? line, since nagios will substitute $HOSTADDRESS$ for the appropriate hosts ip/name. If not, youll get an error. Monitoring Using Nagios", Collapse section "3. 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 the OpenStack cloud is distributed across machines, the NPRE addon can be used to run access plugin information on those remote machines. Looking for job perks? Troubleshoot Keystone v3 Dashboard Authentication, 4.7. Any suggestions of what I can look at, I am out of ideas. Therefore I have done below workaround in client side nrpe.cfg file. Linux is a registered trademark of Linus Torvalds. Short story about swapping bodies as a job; the person who hires the main character misuses his body. 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. Make sure the plugin exists in /usr/local/nagios/libexec before you continue. An example command definition that redirects service check performance data to a text file for later processing by another application is shown below: I also had same problem and the above answers did not work for me. It's not them. Short story about swapping bodies as a job; the person who hires the main character misuses his body. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. 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. Nagios should be hosted on a securely locked down server, especially if security events are being monitored. How can I control PNP and NPN transistors together from one pin? I find it very strange that there are entries in /usr/bin that normal users are not allowed to run? It's not them. Start check_tcp with -h to see the help for 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. 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. Install and configure NRPE on each remote machine (that has services to be monitored). Contact Sales The sample configuration entries below reference objects that are defined in the sample config files (commands.cfg, templates.cfg, etc.) 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. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Why does Acts not mention the deaths of Peter and Paul? ', referring to the nuclear power plant in Ignalina, mean? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. If you dont pass any arguments to the check_ping command, it will show all available options as shown below. What differentiates living as mere roommates from living in a marriage-like relationship? Nagios - Configure a hostgroup to include all the hosts of another group? If it doesn't, install net-snmp and net-snmp-utils and recompile/reinstall the Nagios plugins. If you like to change this, use -p option. @JimBlack - Well, that's the error I'm seeing. Events 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. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. Like i have written below two command one for ping and one for swap. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? 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. Check the documentation that comes with the addon for more information. Multiple lines of performace data (as well as normal text output) can be obtained from plugins, as described in the plugin API documentation. Monitoring Using Nagios", Expand section "3.1. 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. It does seem to be registering on some level as in my Nagios logs I can see: News Add a new host definition for the switch that you're going to monitor. See Also: Monitoring Publicly Available Services. 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. Have you made sure that the nagios user can run the ping command? What does 'They're at four. The thing you post is a Nagios command. Orthogonally defining services and contacts for a host/hostgroup? What is this brick with a round back and a stud on the side used for? Additional service files can be used, but they must be specified as a cfg_file parameter in the /etc/nagios/nagios.cfg file. You'll need to create some object definitions in order to monitor a new router/switch. What is Wario dropping at the end of Super Mario Land 2 and why? Nagios Plugins does not include a service plugin however the linux-nrpe-agent does provide check_init_service. Did the drapes in old theatres actually say "ASBESTOS" on them? 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. Engage with the community of users including those using the open source solutions. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. By default, it will use IPv4. Tell Nagios which services are being monitored for each host. What were the poems other than those by Donne in the Melford Hall manuscript? Testimonials That's where you'll be adding host and service definitions for routers and switches. An example file format template for service performance data might look like this: By default, the text files will be opened in "append" mode. Increased server, services, and application availability, Fast detection of network outages and protocol failures. If youve installed Nagios from source, youll find all the default plugins under /usr/local/nagios/libexec directory. 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. By default the check_ping command will send 5 ICMP ECHO packets. 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. 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. 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. Log Files for OpenStack Services", Collapse section "1.1. It seems to me that there has to be a safer way to do it. 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. This type of performance data is available for all checks that are performed. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? This means if the check_ping does not get a result in 10 seconds, the command will timeout. Media Coverage 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. To learn more, see our tips on writing great answers. Support Plans Make sure that you don't (re)start Nagios until the verification process completes without any errors! nagios (Last Notification: N/A (notification 0)). by cornelp Wed Aug 17, 2016 8:32 am, Post What is scrcpy OTG mode and how does it work? (3-30 sec interval checks). This means if the check_ping does not get a result in 10 seconds, the command will timeout. In my localhost.cfg I have tried: where xxx22 is the actual port. How a top-ranked engineering school reimagined CS curriculum (Ep. Bare Metal Provisioning (ironic) Log Files, 1.1.5. 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. The OP is still lurking. What risks are you taking when "signing in with Google"? Up To: Contents Looking for job perks? 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. # 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 . ", Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). Shared Filesystem Service (manila) Log Files, 1.1.14. 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 Database as a Service (trove) Log Files, 1.1.7. Which language's style guidelines should be used when writing code that is supposed to be called from another language? rev2023.4.21.43403. 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, 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. Which language's style guidelines should be used when writing code that is supposed to be called from another language? Mine always starts with either "PING: OK" or "PING: CRITICAL". define command { command_name check-host-alive command_line $USER1$/check_ping -t 10 -H $HOSTADDRESS$ -w 3000.0,80% -c 5000.0,100% -p 5 } The thing you post is a Nagios command. Processing Performance Data Using Commands. Remember, you only need to do this for the *first* switch you monitor. 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. I can't remember when (or why) I started using check_host, but that's indeed what I'm currently using. Plugin-specific performance data is optional and may not be supported by all plugins. Nagios provides complete monitoring of Ping including reachability and packet loss. Arranging it this way allows me to only add custom services, and service checks that aren't the norm in the host definition. All rights reserved. SSH can also be used to access remote Nagios plugins. 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. Why does Acts not mention the deaths of Peter and Paul? UNIX is a registered trademark of The Open Group. 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. 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. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? The example below defines a new check_ssh_load command: # 'check_ssh_load' command definition define . 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. with the check_snmp plugin and bandwidth (if you're using MRTG) with the check_mrtgtraf plugin. However, I'd recommend waiting until you're more familiar with configuring Nagios Core before doing so. 1. 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. 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. Share Improve this answer Follow answered Feb 10, 2011 at 16:13 rems Could you add more details? Engage with our Red Hat Product Security team, access security updates, and ensure your environments are not exposed to any known security vulnerabilities. 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 '-t 10' is not the interval, but the timeout argument. Plugins can return optional performance data in their output by sending the normal, human-readable text string that they usually would, followed by a pipe character (|), and then a string containing one or more performance data metrics. 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. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? 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. The Industry Standard In IT Infrastructure Monitoring. Remove the leading pound (#) sign from the following line in the main configuration file: What did you just do? When the host goes down, no matter what numbers I use, It will not send an alert until 1.5 minutes later. rev2023.4.21.43403. The MRTG log file is stored in /var/lib/mrtg/192.168.1.253_1.log. Include check_command with nagios/icinga alerts. 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. To learn more, see our tips on writing great answers. Thanks for contributing an answer to Unix & Linux Stack Exchange! What you show for 'Status Information' is not what it should look like. Connect and share knowledge within a single location that is structured and easy to search. It seems that Nagios is not running the correct command. NSClient++ includes a service module that can check if a service is stopped. 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). What is the Russian word for the color "teal"? Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. Learn more about Stack Overflow the company, and our products. So the Nagios Core version is 3.5.1. Thanks for contributing an answer to Stack Overflow! I could not found the ping on /usr/bin/ping. What is scrcpy OTG mode and how does it work? 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. Any complicated monitoring can be placed into a script, and then referred to in the command definition. 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. You should also pass both warning and critical threshold limit. 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 . I'm a little bit wary of going to chmod the ping binary (which is what most blog posts have suggested). :) This is an excellent post. "Signpost" puzzle from Tatham's collection, Using an Ohm Meter to test for bonding of a subpanel. Remote Logging Installation and Configuration", Collapse section "1.3. What is Wario dropping at the end of Super Mario Land 2 and why? Plugin-specific data can include things like percent packet loss, free disk space, processor load, number of current users, etc. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Configure rsyslog on Individual Nodes, 2. For situations, for example, where one particular Linux Server needs to have it's PING check threshold raised from the default. 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. 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. by cornelp Tue Aug 16, 2016 1:47 pm, Post ms|rta=0.627000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0. I am currently running 3.4.1, so I would think this should be working. The nagios standard services such as PING, and check_users work, but check_ssh remains in an UNKNOWN state from the very beginning. Take a look at the main config documentation: So, I was able to make all the necessary changes. But it doesn't identify that as the port. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. I've taken a screenshot, and am updating the question with the screenshot. The check_ping command just validates the availability of a system via an ICMP ping packet. It will have quite a lot of load on the system as well. It's not running 'on' the remote host - the check_ping command is running a ping on the nagios server against the remote host. Here's the service definition I use to monitor the bandwidth data that's stored in the log file. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. To do this, you'll need to verify your configuration and restart Nagios Core. If your switch supports SNMP, you can monitor port status, etc. In my localhost.cfg I have tried: check_ssh!xxx22!localhost . Thanks for contributing an answer to Server Fault! Troubleshoot Identity Client (keystone) Connectivity Problems, 4.3. Adjust this to say, 10. What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? A boy can regenerate, so demons eat him for years. by rkennedy Tue Aug 16, 2016 11:34 am, Post Check WMI Plus allows you to check multiple services, here is an example that checks for two services that are running. 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. 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. rotate them) using the host_perfdata_file_processing_command and service_perfdata_file_processing_command options. 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. Nagios Plugins does not include a service plugin however the linux-nrpe-agent does provide check_init_service. If your switch or router supports SNMP, you can monitor a lot of information by using the check_snmp plugin. The first time you configure Nagios Core to monitor a network switch, you'll need to do a bit of extra work. Eg. Any check that you place in a hostgroup will apply to any host in that hostgroup (which you knew already). 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. Nagios: Service dependency on same host for an entire hostgroup, Nagios/Icinga check of Windows disk space, wrong -l argument. Email: sales@nagios.com 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 Box293 Sun Aug 28, 2016 8:34 pm, Post Tell Nagios which hosts are being monitored. Is there a plugin named check_hosts? 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.
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