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. To learn more, see our tips on writing great answers. Nagios - Hosts and Services - TutorialsPoint 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. Is there another (safer) option, such as adding the Nagios user to ping's group or something? By default, it will use IPv4. On the central Nagios server, in the commands.cfg configuration file, define the new checks. The warning limit is 10ms RTA or 2% packet-loss. 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. I can execute the check manually, at the nagios server (Ubuntu Desktop) The Nagios monitoring system can be used to provide monitoring and alerts for the OpenStack network and infrastructure. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Start check_tcp with -h to see the help for it. 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. Two MacBook Pro with same model number (A1286) but different year, Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). service_description PING. My /etc/nagios/objects/commands.cfg states, which defines the arguments in between the exclamation marks as in the documentation example you gave. The interval between checks in this example is 5 minutes (check_interval). Mine always starts with either "PING: OK" or "PING: CRITICAL". If your switch or router supports SNMP, you can monitor a lot of information by using the check_snmp plugin. "But not exactly"? Answer Hub do you know of a way to "switch off" one of the checks inherited from the hostgroup? My understanding, however, is that a change was made around version 3.2.0 to allow host-level services to take precedence of hostgroup-level services. That configuration file already contains some sample host, hostgroup, and service definitions. that are installed when you follow the quickstart. 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. It seems to me that there has to be a safer way to do it. Short story about swapping bodies as a job; the person who hires the main character misuses his body. Be aware that the service module is cAsE SeNsative, you can overcome this with the match= argument. ', referring to the nuclear power plant in Ignalina, mean? What is the symbol (which looks similar to an equals sign) called? This means if the check_ping does not get a result in 10 seconds, the command will timeout. by cornelp Wed Aug 17, 2016 8:32 am, Post 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. Like i have written below two command one for ping and one for swap. How Macros Work Nagios Core Documentation Note: The Nagios daemon doesn't directly process plugin performance data, so it doesn't really care what the performance data looks like. # 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 . Monitoring Using Nagios", Collapse section "3. Why are players required to record the moves in World Championship Classical games? Here's the service definition I use to monitor the bandwidth data that's stored in the log file. Are you talking about check interval? 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. Nagios' check_ssh (of course) keeps marking the process as critical since it can't connect on that port. More expensive switches and routers have addresses assigned to them and can be monitored by pinging them or using SNMP to query status information. by tmcdonald Wed Aug 17, 2016 2:31 pm, Post To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Now you can add some service definitions (to the same configuration file) to monitor different aspects of the switch. 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 minutes . check-host-alive is defined in commands.cfg to use check_ping. with the check_snmp plugin and bandwidth (if you're using MRTG) with the check_mrtgtraf plugin. NPCA includes a service module that can check if a service is running. 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. 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. Contact Us, Awards the '-t 10' is not the interval, but the timeout argument. Inquire today and let our Quickstart team help you get started with Nagios XI, Up To: Contents Why did US v. Assange skip the court of appeal? 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. by cornelp Tue Aug 16, 2016 1:47 pm, Post 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. Chapter 3. Monitoring Using Nagios - Red Hat Customer Portal For example: Each defined command can then be specified in the services.cfg file on the Nagios monitoring server. Nagios: How to determine parameter order check_ssh 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. 2. While there are certainly some differences in the functionality, the overall end result is the same. If the verification process produces any errors messages, fix your configuration file before continuing. There aren't really any inherent limitations on the format or content of the performance data. If you dont pass any arguments to the check_ping command, it will show all available options as shown below. You should also pass both warning and critical threshold limit. I also find it non-intuitive to have to maintain a list of exclusions separate to where the host itself is actually defined. However, one server runs with much less free space than the norm. 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. Plugin-specific performance data is optional and may not be supported by all plugins. The MRTG log file is stored in /var/lib/mrtg/192.168.1.253_1.log. Remote Logging Installation and Configuration", Collapse section "1.3. The best answers are voted up and rise to the top, Not the answer you're looking for? It will have quite a lot of load on the system as well. Website Copyright 2009-2023 Nagios Enterprises, LLC. Browse other questions tagged. Videos How about saving the world? Change the host_name, alias, and address fields to appropriate values for the switch. They're great. Documentation, Purchase Online Was Aristarchus the first to propose heliocentrism? Find centralized, trusted content and collaborate around the technologies you use most. What is Wario dropping at the end of Super Mario Land 2 and why? 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. Host is just like a computer; it can be a physical device or virtual. 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%. What is Wario dropping at the end of Super Mario Land 2 and why? Troubleshoot Identity Client (keystone) Connectivity Problems, 4.3. Nagios Plugins does not include a service plugin however the linux-nrpe-agent does provide check_init_service. Remotely monitor servers with the Nagios check_by_ssh plugin Linux is a registered trademark of Linus Torvalds. If it doesn't, install net-snmp and net-snmp-utils and recompile/reinstall the Nagios plugins. It seems that Nagios is not running the correct command. Up To: Contents 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. UNIX is a registered trademark of The Open Group. Set up a hostgroup cfg file with the checks in it. It only takes a minute to sign up. Here you go. Check WMI Plus includes a service module that can check if a service is running. The hyperbolic space is a conformally compact Einstein manifold. Configure Nagios to Monitor OpenStack Services, 3.2.5. Nagios - how does native service such as check_ping monitor remote host For the time being, just follow the directions outlined below and you'll be monitoring your network routers/switches in no time. Percentage of packet loss, which is called pl. The nagios standard services such as PING, and check_users work, but check_ssh remains in an UNKNOWN state from the very beginning. As they are critical infrastructure components, you'll no doubt want to monitor them in at least some basic manner. Arranging it this way allows me to only add custom services, and service checks that aren't the norm in the host definition. To learn more, see our tips on writing great answers. Knowledge Base This is specified in ms. Check WMI Plus includes a service module that can check if a service is stopped. "Signpost" puzzle from Tatham's collection. Nagios is the most popular tool which is used to monitor hosts and services running in your IT infrastructure. The plugin returns a CRITICAL state if the service is not started. Switches and routers can be monitored easily by "pinging" them to determine packet loss, RTA, etc. What were the poems other than those by Donne in the Melford Hall manuscript? 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 not, youll get an error. 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. 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. Configure rsyslog on the Centralized Logging Server, 1.3.4. For situations, for example, where one particular Linux Server needs to have it's PING check threshold raised from the default. Contact Sales What should I follow, if two altimeters show different altitudes? Did the drapes in old theatres actually say "ASBESTOS" on them? 1. I want to set interval between ping times is 10 seconds like below: But not exactly (about 90 seconds). Some links that lead me to believe this feature should already be implemented: Furthermore, I've checked my copy of the xdata/xodtemplate.c file from the 3.4.1 source code, and at a glance it does seem that in the "skip list", that host level checks are meant to take precedence over the hostgroup checks. Nagios: Service dependency on same host for an entire hostgroup, Nagios/Icinga check of Windows disk space, wrong -l argument. Therefore I have done below workaround in client side nrpe.cfg file. The Nagios server will receive traffic from a broad scope of systems. Why did US v. Assange skip the court of appeal? 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. Nagios provides complete monitoring of Ping including reachability and packet loss. PerfParse), the addon may be expecting that the plugin returns performance data in a specific format. by cornelp Mon Aug 29, 2016 8:08 am, Post The Industry Standard In IT Infrastructure Monitoring. Media Coverage 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. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? I could not found the ping on /usr/bin/ping. How a top-ranked engineering school reimagined CS curriculum (Ep. Remote Logging Installation and Configuration", Expand section "2. 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. 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. I haven't changed the definition of how check_ping works, and can confirm that I'm getting a "PING OK" whenever the command is run the same way that check-host-alive runs the command, so I cannot figure out what's going on! Some methods support checking multiple services at once. This means if the check_ping does not get a result in 10 seconds, the command will timeout. If you create the same check in the host cfg, then it'll override the hostgroup check. This isn't advised at all, as checking this frequently can lead to a multitude of different issues. I had to rename them to txt as it would not allow the original ext. nagios (Last Notification: N/A (notification 0)). Asking for help, clarification, or responding to other answers. What does 'They're at four. 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. To define the check interval, you need to look at the host (or service) configuration file. I would suggest you to change the check_command to something like my-check-host-alive and to define my-check-host-alive in commands.cfg to use something like check_tcp. If this is the *first* switch you're monitoring, you can simply modify the sample host definition in switch.cfg. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? 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. rev2023.4.21.43403. Any suggestions of what I can look at, I am out of ideas. rev2023.4.21.43403. define host { use windows-server host_name cielo01 alias cielo01 address cielo01 . 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. 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. 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. I did as you stated. Remember, you only need to do this for the *first* switch you monitor. by rkennedy Tue Aug 16, 2016 11:34 am, Post rotate them) using the host_perfdata_file_processing_command and service_perfdata_file_processing_command options. 5 Nagios check_ping Command Examples to Monitor Remote Host This will exclude the zlinux host from the service check. To learn more, see our tips on writing great answers. It's not running 'on' the remote host - the check_ping command is running a ping on the nagios server against the remote host. Which was the first Sci-Fi story to predict obnoxious "robo calls"? Connect and share knowledge within a single location that is structured and easy to search. 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. By default the check_ping command will do the connection time out (if it is unable to reach the destination host) after 10 seconds. Monitoring switches and routers can either be easy or more involved - depending on what equipment you have and what you want to monitor. I put in ` check_ssh!--host=localhost!--port=xxx22` and nagios will start with, Nagios: How to determine parameter order check_ssh. 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. Bare Metal Provisioning (ironic) Log Files, 1.1.5. By using decimals in your check_interval I have a feeling it's throwing the math off. Overriding Nagios hostgroup service with host service 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. Connect and share knowledge within a single location that is structured and easy to search.
Scratch Marks On Skin While Sleeping,
Ww2 German Collar Tab Identification,
Where Are Rubies Found In North Carolina,
Dearborn High School Famous Alumni,
Is There A Mermaid Chronicles Part 2,
Articles N
