nagios service check example

5 check_http examples Does anyone have a working example of a dependencies.cfg file for nagios? In order to be able to submit passive check results, we need to configure Nagios to allow the sending of passive check results, and set the host objects to accept them. The following is an example of the required configuration for a host that accepts passive checks and has active checks disabled: Configuring services is exactly the same as with hosts. On the client host that you want to use to connect to remote Docker daemon, generate SSH keys from your user account; ssh-keygen. Select check_cluster from the plugin pop-up menu. }. Nagios: monitor http service on a different port - Server Fault Having managed large Nagios installations for many years, assigning services to hostgroups is an anti pattern and can make things complicated fast if your environment gets big. Service Checks - Nagios In this way, NSCA communication sent over the Internet is more secure. Learn more. Related Commands. Note: Certain nodes in the above example have combined check results, such as memory/virtual, memory/swap, and processes. The script should then post results to the Nagios daemon. Passive service checks are often used to report the results of long lasting tests asynchronously. i'm very new on that kind of progamming what does this line ", " means i really want to lear some but i need help please helpme. This is how your host definitions look currently . After installing nagios and nagios-plugins-all (via yum), I've c. $ vi /usr/local/nagios/etc/servers/devserver.cfg Vulnerability Summary for the Week of June 17, 2019 | CISA These will come through as an Unconfigured Object initially because Nagios XI has never received a Passive check result for this host/service. define service{ use generic-service host_name web1.onemetric.com.au service_description Uptime check_command snmp_Uptime!-C public } Adjust the commands as required. If the situation involves reporting problems from other applications or machines, it is definitely a use case for a passive check. So I will add at the end of the file the following block:Advertisement.banner-1{text-align:center;padding-top:20px!important;padding-bottom:20px!important;padding-left:0!important;padding-right:0!important;background-color:#eee!important;outline:1px solid #dfdfdf;min-height:335px!important}if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'howtoforge_com-banner-1','ezslot_4',111,'0','0'])};__ez_fad_position('div-gpt-ad-howtoforge_com-banner-1-0');.banner-1{text-align:center;padding-top:20px!important;padding-bottom:20px!important;padding-left:0!important;padding-right:0!important;background-color:#eee!important;outline:1px solid #dfdfdf;min-height:335px!important}if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'howtoforge_com-banner-1','ezslot_5',111,'0','1'])};__ez_fad_position('div-gpt-ad-howtoforge_com-banner-1-0_1');.banner-1-multi-111{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}. Test Server 1: custom application (TCP Port. NSClient++ includes a service module that can check if a service is running. This way, Nagios can help monitor the accessibility of both MySQL servers and the database stored within the servers. 03-16-2010, 10:31 AM . Ensure that the local file and .d directory are included in the main configuration file with: Now check one of the previously defined NRPE commands from the Nagios server: Note that the check_users NRPE command was defined in the /etc/nagios/nrpe_local.cfg file to run /usr/lib/nagios/plugins/check_users -w 5 -c 10. To figure this out I set nagios into debug mode with the configuration like this. The sections below provide examples of how to perform these checks using different methods. It is generally recommended to run the Nagios service check scripts in CLI before adding them to Nagios. Allow Nagios server to run commands on the client by adding it to the allowed_hosts entry in /etc/nagios/nrpe.cfg. This file location depends on the configuration you've done, in my case it is in /usr/local/nagios/etc/objects/commands.cfg. UNKNOWN 2013-04-25 18:11:24 0d 0h 55m 37s 4/4 RESPONSE: UNKNOWN ERROR: /usr/bin/nc does does not exist, i am really getting frustrate from this nagios error, nitin: you need to install the netcat package for your distribution which will provide /usr/bin/nc, I had been using this plugin for a while. The plugins can be in any language, Nagios only cares They can be the following: 0: OK This example is going to restart the crond service as it is unlikely to cause any issues. NPCA allows you to check multiple services, here is an example that checks for some services that are running and some that are stopped. On any device & OS. You have entered an incorrect email address! Active checks can be used to "poll" a device or service for status information every so often. # These are some example service check commands. Hi, thanks for your comment. Does a summoned creature play immediately after being summoned by a ready action? This command accepts the host name, status code, and the textual output from a check. The NRDP addon allows administrators to migrate from using NSCA to NRDP fairly easily. Save my name, email, and website in this browser for the next time I comment. Linux Check Service - Nagios Exchange . It can be used to send results from one Nagios instance to another. Then we are removing spaces using sed and finally cut the appropriate field using cut, i this case field 5 is what we want. They have a lot of advantages and some disadvantages. does the HTML display xx welcome xx? Depending on the status received on hosts and services, appropriate action is taken. But today when I am trying to post an XML message to the server, from console it works well but does not work with nrpe. On a finishing note, Nagios can monitor many other sectors of a network. Do roots of these polynomials approach the negative of the Euler-Mascheroni constant? Asking for help, clarification, or responding to other answers. Nagios also supports a way to monitor hosts and services passively instead of actively. It also defines Nagios user and group under which Nagios instance is running. mark separates the command from the arguments in the check_command entry. In most cases you'll use Nagios to monitor your hosts and services using regularly scheduled active checks. check_http: command not found. Syntax and Options Nagios is a host and service monitor designed to inform you of network problems before your clients, end-users or managers do. No software installation. For Nagios, many, many Oracle plugins are available for checking database availability and performance. This can be done to gather all critical errors to a single, central place. host_name Server01 System Monitoring Via Nagios and SNMP - Department of Mathematics nagios-plugins/check_service.sh at master - GitHub Force a check and you will see exactly how the command is being run. This user is then granted all permission to all databases and will be used for monitoring. service_description check http://MYIP/test.php Nagios can tell what the status of the service is by reading the exit code of the check. # yum -y install httpd gcc glibc glibc-common gd gd-devel openssl-devel net-snmp net-snmp-devel net-snmp-utils snmp* bc xinetd make wget (php php-mysql) . nagiostats provides statistics of which only the part `Services Ok/Warn/Unk/Crit: 8 / 0 / 0 / 0` are interesting to us, so we are using grep to extract this line. 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. So in the server set the files: /usr/local/nagios/etc/objects/commands.cfg: /usr/local/nagios/etc/objects/nrpeclient.cfg: Note that the ! 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. Monitor DNS server with Nagios For instance, a model for the file could be: The idea of having that generic file is so that you can check the same on every client. Treat NRPE connection failures as 'UNKNOWN' service state, and don't notify on UNKNOWN services . Pass the specified string as User Agent in HTTP header. As this tutorial is based on Debian 9, I will show as an example how to install it, but you can find instructions for any distribution. # Nagios Exit Codes OK=0 WARNING=1 CRITICAL=2 UNKNOWN=3 # Weather or not we can trust the exit code from the service management tool. 2. Nagios: Simple Oracle Check. Can I tell police to wait and call a lawyer when served with a search warrant? This website is made possible by minimal ads and your gracious donation via PayPal or credit card. The method for using any of these "plugins" from the command line is the same as any other Linux script: Just run "./plugin-name" with the appropriate flags you want to check, and voila! Check WMI Plus includes a service module that can check if a service is running. A command to submit passive checks is PROCESS_SERVICE_CHECK_RESULT (visit http://www.nagios.org/developerinfo/externalcommands/commandinfo.php?command_id=114). This allows for seamless integration of status information from external applications with Nagios. Nagios server in this example is hosted on 192.168..150 and an example client is hosted on IP 192.168..200 Exit Codes To identify the status of a monitored service, Nagios runs a check plugin on it. Active checks reach out from the Nagios host and test if a service is doing what it's expected to do. Unlike with active host checks, Nagios does not (by default) attempt to determine whether or host is DOWN or UNREACHABLE with passive checks. Securely download your document with other editable templates, any time, with PDFfiller. We must install this software there to install the "check_nrpe" plugin that we use to perform active checks using the NRPE. It says -S is for version. Nagios - Checks and States - tutorialspoint.com When a host or service is down for a very short duration of time and its status is not known or different from previous one, then soft states are used. I've: 5 # provided some comments here, but things may not be so clear without further . Line 1 ##### 2 # Sample object config file for Nagios : 3 # 4 # Read the documentation for more information on this configuration file. Check HTTPS Check whether Apache HTTPS is running on a remote server using check_http. 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. Nagios will be configured to monitor SMTP and mail queue of the server. Hi, this is a fantastic article, i managed to learn how to make plugins myself. Nagios also offers a way of combining the benefits of both active and passive checks. Get your subscription here. The following is a script that runs the dd system command (visit http://man.linuxquestions.org/index.php?query=dd) to read an entire block device. The main Nagios process then handles the check results and takes appropriate action (running event handlers, sending notifications, etc.). Nagios ()_DevilRex119_51CTO The basic workings of service checks are described here Services are checked by the Nagios daemon: On-demand checks are performed as part of the predictive service dependency check logic. All of the scripts are located at /etc/nagios-plugins/config/ with the executable files stored at /usr/lib/nagios/plugins/. The output indicates that it expires in 300 days. Even if its parent host is currently DOWN, the child host state is also stored as DOWN. Define the checks on /etc/nagios/nrpe_local.cfg. As mentioned earlier, server-2 has postfix mail server set up on it. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. How can I manually run a nagios check from the command line?