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SSH can also be used to access remote Nagios plugins. @JimBlack - Well, that's the error I'm seeing. Which was the first Sci-Fi story to predict obnoxious "robo calls"? Looking for job perks? You'll need to create some object definitions in order to monitor a new router/switch. Share Improve this answer Follow answered Feb 10, 2011 at 16:13 rems 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. ', referring to the nuclear power plant in Ignalina, mean? Have you made sure that the nagios user can run the ping command? Increased server, services, and application availability, Fast detection of network outages and protocol failures. All other servicemarks and trademarks are the property of their respective owner. Why in the Sierpiski Triangle is this set being used as the example for the OSC and not a more "natural"? ', referring to the nuclear power plant in Ignalina, mean? once I passed the correct IP protocol , It worked fine. Engage with the community of users including those using the open source solutions. 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. NSClient++ allows you to check multiple services, here is an example that checks for two services that are running. Thanks. Configure rsyslog on the Centralized Logging Server, 1.3.4. Keep your systems secure with Red Hat's specialized responses to security vulnerabilities. How to Make a Black glass pass light through it? If your switch supports SNMP, you can monitor port status, etc. Is there a plugin named check_hosts? 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. Engage with our Red Hat Product Security team, access security updates, and ensure your environments are not exposed to any known security vulnerabilities. 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. 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. Check WMI Plus allows you to check multiple services, here is an example that checks for two services that are running. In my localhost.cfg I have tried: where xxx22 is the actual port. How a top-ranked engineering school reimagined CS curriculum (Ep. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Browse other questions tagged. I am using nagios ver. Database as a Service (trove) Log Files, 1.1.7. If the OpenStack cloud is distributed across machines, the NPRE addon can be used to run access plugin information on those remote machines. 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. When the host goes down, no matter what numbers I use, It will not send an alert until 1.5 minutes later. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Percentage of packet loss, which is called pl. There are several steps you'll need to follow in order to monitor a new router or switch. Any complicated monitoring can be placed into a script, and then referred to in the command definition. I just mis-typed it here, sorry. @MrCleanX - I've read a few blog posts suggesting I check that. This method is described in the next section. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. My linux box uses a nonstandard port for ssh. "But not exactly"? 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. I don't like it, from a security standpoint. 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 How a top-ranked engineering school reimagined CS curriculum (Ep. Here's the service definition I use to monitor the bandwidth data that's stored in the log file. 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. Monitoring Using the Telemetry Service", Collapse section "2. Create new host and service definitions for monitoring the device, CRITICAL if the round trip average (RTA) is greater than 600 milliseconds or the packet loss is 60% or more, WARNING if the RTA is greater than 200 ms or the packet loss is 20% or more, OK if the RTA is less than 200 ms and the packet loss is less than 20%. Write a short script for the item to be monitored (for example, whether a service is running), and place it in the /usr/lib64/nagios/plugins directory. You'll need to let the check_mrtgtraf plugin know what log file the MRTG data is being stored in, along with thresholds, etc. Why xargs does not process the last argument? However, I'd recommend waiting until you're more familiar with configuring Nagios Core before doing so. Note: The Nagios daemon doesn't directly process plugin performance data, so it doesn't really care what the performance data looks like. 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. Eg. 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. define host { use windows-server host_name cielo01 alias cielo01 address cielo01 . Did the drapes in old theatres actually say "ASBESTOS" on them? However, if you are using an external addon to process the performance data (i.e. I can't remember when (or why) I started using check_host, but that's indeed what I'm currently using. Could you add more details? How to Make a Black glass pass light through it? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Tell Nagios which hosts are being monitored. If total energies differ across different software, how do I decide which software to use? Knowledge Base What is the symbol (which looks similar to an equals sign) called? What risks are you taking when "signing in with Google"? Thanks for contributing an answer to Stack Overflow! The state information delivers "Usage: " which is an indicator that the parameters are wrong. 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. Nagios - Configure a hostgroup to include all the hosts of another group? Include check_command with nagios/icinga alerts. NSClient++ includes a service module that can check if a service is running. Asking for help, clarification, or responding to other answers. by Box293 Sun Aug 28, 2016 8:34 pm, Post define service{ host_name linuxbox service_description PING check_command check_ping!200.0,80%!400.0,40% . } So, you really dont need to specify -4 (which is optional). 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. More expensive switches and routers have addresses assigned to them and can be monitored by pinging them or using SNMP to query status information. Arranging it this way allows me to only add custom services, and service checks that aren't the norm in the host definition. Plugin performance data is external data specific to the plugin used to perform the host or service check. Why did US v. Assange skip the court of appeal? Plugin-specific data can include things like percent packet loss, free disk space, processor load, number of current users, etc. Asking for help, clarification, or responding to other answers. Apologies, mistyped. The thing you post is a Nagios command. What is the symbol (which looks similar to an equals sign) called? by tmcdonald Wed Aug 17, 2016 2:31 pm, Post Add a new host definition for the switch that you're going to monitor. It's not them. This should be specified as %age. The "AVG" option tells it that it should use average bandwidth statistics. that are installed when you follow the quickstart. Email: sales@nagios.com Add OpenStack monitoring to the local server. Remote Logging Installation and Configuration", Collapse section "1.3. However, one server runs with much less free space than the norm. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. 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. Looking at the check_ssh man page doesn't seem to indicate in what order to place these switches You can define a command and use that command for your service. Uploaded the 2 files you requested. This means if the check_ping does not get a result in 10 seconds, the command will timeout. tar command with and without --absolute-names option. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Services are those which are used by Nagios to check something about a host. . I checked log: /usr/local/nagios/var/nagios.log the interval between ping times is 90 seconds. Switches and routers can be monitored easily by "pinging" them to determine packet loss, RTA, etc. "Signpost" puzzle from Tatham's collection. 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. 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. Nagios Plugins does not include a service plugin however the linux-nrpe-agent does provide check_init_service. Troubleshoot Instance Launching Errors in the Dashboard, 4.6. That's it for the SNMP monitoring example. Videos 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. How about saving the world? Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. This type of performance data is available for all checks that are performed. Nagios checks are not run on an exact schedule. 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. 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. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Remote Logging Installation and Configuration, 1.3.3. I had to rename them to txt as it would not allow the original ext. 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. At this point I think enabling debug mode and looking at the debug log will be required to understand what is going on. For this sort of problem I do this a lot. Media Coverage Create Service Definitions for Remote Services, 4.2. 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. What does 'They're at four. 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. Making statements based on opinion; back them up with references or personal experience. by cornelp Mon Aug 29, 2016 8:42 am, Powered by phpBB Forum Software phpBB Limited. I tried that as well, but ran into a different issue. It will have quite a lot of load on the system as well. OpenStack Dashboard - Red Hat Access Tab. 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. 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 The following are some possible error messages that you might get when you try to use check_ping command. Which language's style guidelines should be used when writing code that is supposed to be called from another language? 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). Looking for job perks? Plugin-specific performance data is optional and may not be supported by all plugins. by cornelp Wed Aug 17, 2016 8:32 am, Post 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. check_ping command is a Nagios plugin that is used to check the ping output of a remote server. Now you can add some service definitions (to the same configuration file) to monitor different aspects of the switch. The hyperbolic space is a conformally compact Einstein manifold. 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. Server Fault is a question and answer site for system and network administrators. It seems to me that there has to be a safer way to do it. How can I control PNP and NPN transistors together from one pin? The MRTG log file is stored in /var/lib/mrtg/192.168.1.253_1.log. Monitoring Using Nagios", Expand 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. 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. To me, this is not an ideal solution, as we could end up having to make many exceptions and this seems like it would be tough to maintain. NPCA allows you to check multiple services, here is an example that checks for some services that are running and some that are stopped. Why does Acts not mention the deaths of Peter and Paul? There are a million things that can be monitored via SNMP, so its up to you to decide what you need and want to monitor. service_description PING. 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. How do you Null an inherited service check in nagios? 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): Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Extracting arguments from a list of function calls. I also had same problem and the above answers did not work for me. I am currently running 3.4.1, so I would think this should be working. There should be no reference to /usr/bin/ping in that output, even when failing. I could not found the ping on /usr/bin/ping. 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. News Connect and share knowledge within a single location that is structured and easy to search. Contact Sales 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. Open nagios web interface and see the host is being pinged properly. This document describes how you can monitor the status of network switches and routers. Connect and share knowledge within a single location that is structured and easy to search. Can you help me? Processing Performance Data Using Commands. What does 'They're at four. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? So for ping alerts it should go to network@example.com and for swap it should goto storage@example.com. Certification 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. At a minimum, Nagios plugins must return a single line of human-readable text that indicates the status of some type of measurable data. As they are critical infrastructure components, you'll no doubt want to monitor them in at least some basic manner. 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 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. 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. host_name server1. line, since nagios will substitute $HOSTADDRESS$ for the appropriate hosts ip/name. If you want to have more granular (free) monitoring, check out InfluxDB, Telegraf and Grafana. The check_ping command just validates the availability of a system via an ICMP ping packet. The hyperbolic space is a conformally compact Einstein manifold. 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! ms|rta=0.627000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0. Making statements based on opinion; back them up with references or personal experience. Website Copyright 2009-2023 Nagios Enterprises, LLC. 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. What is Wario dropping at the end of Super Mario Land 2 and why? 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. Two MacBook Pro with same model number (A1286) but different year, Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). It is not possible to set intervals of less then one minute with Nagios. UNIX is a registered trademark of The Open Group. If your switch or router supports SNMP, you can monitor a lot of information by using the check_snmp plugin. 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. You can always comment these services out if they are no longer needed by prefacing each line with a '#' character. By default, when Nagios is installed, the default httpd user and password is: nagiosadmin / nagiosadmin. NRPE is for more complicated checks, where you need to run commands directly on the remote server. 4.0.8 . by cornelp Tue Aug 16, 2016 1:47 pm, Post 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. It is great for things like number of services or what load or how much memory each machine has. 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 provides complete monitoring of Ping including reachability and packet loss. Can you still use Commanders Strike if the only attack available to forego is an attack against an ally? 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. I'm a little bit wary of going to chmod the ping binary (which is what most blog posts have suggested). What you show for 'Status Information' is not what it should look like. If you dont pass any arguments to the check_ping command, it will show all available options as shown below. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. Documentation, Purchase Online 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. : In your host template set a default value: In the host definition that should use a difference value set e.g. Find centralized, trusted content and collaborate around the technologies you use most.

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