define service{ host_name linuxbox service_description PING check_command check_ping!200.0,80%!400.0,40% . } 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. What is the symbol (which looks similar to an equals sign) called? 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. By using decimals in your check_interval I have a feeling it's throwing the math off. I just mis-typed it here, sorry. If this is the *first* switch you're monitoring, you can simply modify the sample service definition in switch.cfg. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. An example file format template for service performance data might look like this: By default, the text files will be opened in "append" mode. Linux is a registered trademark of Linus Torvalds. Why xargs does not process the last argument? For the time being, just follow the directions outlined below and you'll be monitoring your network routers/switches in no time. That's it for the SNMP monitoring example. 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 Learn more about Stack Overflow the company, and our products. @MrCleanX - I've read a few blog posts suggesting I check that. 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. 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. Why does Acts not mention the deaths of Peter and Paul? This type of performance data is available for all checks that are performed. See Also: Monitoring Publicly Available Services. My /etc/nagios/objects/commands.cfg states, which defines the arguments in between the exclamation marks as in the documentation example you gave. Thanks for that. Make sure that you don't (re)start Nagios until the verification process completes without any errors! It is great for things like number of services or what load or how much memory each machine has. The interval between checks in this example is 5 minutes (check_interval). Performance Data - Nagios By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. The sample configuration entries below reference objects that are defined in the sample config files (commands.cfg, templates.cfg, etc.) I'm sure the OP is well on to other things by now, but hopefully someone else who has this issue will benefit. PerfParse), the addon may be expecting that the plugin returns performance data in a specific format. 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. check_ping command is a Nagios plugin that is used to check the ping output of a remote server. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. OpenStack Dashboard - Red Hat Access Tab", Collapse section "4.7. 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. Once you've added the new host and service definitions to the switch.cfg file, you're ready to start monitoring the router/switch. 4.0.8 . 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. There are several steps you'll need to follow in order to monitor a new router or switch. How to Make a Black glass pass light through it? 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. What you show for 'Status Information' is not what it should look like. Which language's style guidelines should be used when writing code that is supposed to be called from another language? 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. service_perfdata_file_processing_interval, Everything before the pipe character is considered to be the "normal" plugin output and will be stored in either the $HOSTOUTPUT$ or $SERVICEOUTPUT$ macro, Everything after the pipe character is considered to be the plugin-specific performance data and will be stored in the $HOSTPERFDATA$ or $SERVICEPERFDATA$ macro. Here is a link to it's usage: http://nagiosplugins.org/man/check_http 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. Modify host_name appropriately. Have you made sure that the nagios user can run the ping command? This method is described in the next section. 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. Nagios - Configure a hostgroup to include all the hosts of another group? It seems to me that there has to be a safer way to do it. Can you help me? "Signpost" puzzle from Tatham's collection, What "benchmarks" means in "what are benchmarks for? by cornelp Wed Aug 17, 2016 8:32 am, Post How can I control PNP and NPN transistors together from one pin? 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. 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": Has the cause of a rocket failure ever been mis-identified, such that another launch failed due to the same problem? Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey, Can execute nagios ssh check manually but get 126/127 out of bounds error from nagios, Different Nagios email notifications for different services, Nagios host notifications not sending via email or logging, Nagios - "Unable to send check for host" or "run check for service". Thanks for contributing an answer to Stack Overflow! by rkennedy Tue Aug 16, 2016 4:51 pm, Post It will have quite a lot of load on the system as well. If you dont pass any arguments to the check_ping command, it will show all available options as shown below. I tried that as well, but ran into a different issue. 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. linux - How to send alert in nagios for particular service to Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. In the following example, it sends 10 ICMP ECHO packets to the remote host before its output is measured. by tmcdonald Wed Aug 17, 2016 2:31 pm, Post The check_ping command just validates the availability of a system via an ICMP ping packet. In my localhost.cfg I have tried: check_ssh!xxx22!localhost . Simply change the host check command to use check_host rather than check_ping. Why did DOS-based Windows require HIMEM.SYS to boot? ", Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). : In your host template set a default value: In the host definition that should use a difference value set e.g. Why in the Sierpiski Triangle is this set being used as the example for the OSC and not a more "natural"? 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. Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. Here's the service definition I use to monitor the bandwidth data that's stored in the log file. They're great. Remote Logging Installation and Configuration", Expand section "2. The plugin returns a CRITICAL state if the service is not started. Arranging it this way allows me to only add custom services, and service checks that aren't the norm in the host definition. Nagios check_ssh returns usage information instead of status How do you Null an inherited service check in nagios? Configure Nagios so that performance data is either written to files and/or processed by executing commands. Nagios: config ping times - Stack Overflow Nagios: How to determine parameter order check_ssh Nagios is the most popular tool which is used to monitor hosts and services running in your IT infrastructure. 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. 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. 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. The module defines a "good" service as one that is running and a "bad" service is one that is not running, so you can define critical is when more than 0 "good" services exist. By default, it will use IPv4. Services are those which are used by Nagios to check something about a host. 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. I'm a little bit wary of going to chmod the ping binary (which is what most blog posts have suggested). 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. Nagios provides complete monitoring of Ping including reachability and packet loss. (3-30 sec interval checks). What is scrcpy OTG mode and how does it work? I changed the Nagios cfg file interval_length to 10 and the host file to 20 and 10. What is scrcpy OTG mode and how does it work? 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.
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