The values for these options are a bitwise AND of values specified by the "MODATTR_" definitions in the include/common.h source code file. For many Nagios users, implementing additional configuration tools can ease the task of deploying and managing a Nagios configuration. Plugins operate acts as a standalone application, but they are designed to be executed by Nagios Core. This option allows you to specify the command that should be executed to process the service performance data file. The configuration files of Nagios are located in /usr/local/nagios/etc. Nagios forces the user to enter configurations as text files. A value of 0 indicates that the performance data file should not be processed at regular intervals. The main configuration file is usually named nagios.cfg and located in the /usr/local/nagios/etc/ directory. Note: If you have state retention enabled, Nagios will ignore this setting when it (re)starts and use the last known setting for this option (as stored in the state retention file), unless you disable the use_retained_program_state option. Description; Limitations - OS compatibility, etc. We are assuming that you have Nagios Core and Plugins installed and configured on your server. Too high of a value for this option may result in inaccuracies in the service dependency logic. This is designed to allow for maximum flexibility with a variety of administratorâs setups. Check the command output for any error messages. The template may contain macros, special characters (\t for tab, \r for carriage return, \n for newline) and plain text. Prerequisites 1. In order to make Nagios retain state information between program restarts, you must enable the retain_state_information option. Hello, I just installed nagios 2.x and I'm using doc + google to understand it. Manually Installing Nagios Log Server This video will demonstrate how to Manually Install Nagios Log Server for organizing and managing Log Data. Unless you've changed the interval_length value (as defined below) from the default value of 60, this number will mean minutes. The files are generated from the nagconfgen.pl script. Fixed duplicate properties appearing in statusjson.cgi (#718) (Sebastian Wolf) 3. This option determines whether or not Nagios will use soft state information when checking host and service dependencies. In our case, we are going to add a Ubuntu 18.04 LTS to the Nagios monitoring server. Main Configuration File Options. Values are as follows: This option determines whether or not Nagios will execute on-demand and regularly scheduled host checks when it initially (re)starts. This option allows you to enable or disable checks for orphaned service checks. It is recommend that you enable this option to ensure that you stay on top of the latest critical patches to Nagios. The Writing debugging information to the Nagios Core log file recipe, Chapter 10, Security and Performance . This option determines what (and how) data is written to the host performance data file. It should be set to something high (like 60 seconds or more), so that each service check normally finishes executing within this time limit. The maximum amount of time that this command can run is controlled by the ocsp_timeout option. This option determines the maximum size (in bytes) of the debug file. Install Build Dependencies. Configuration files or pre-cached object files are distributed across many Nagios pollers. This setting determines how often (in minutes) that Nagios will automatically save retention data during normal operation. Since no results have come back in for the service, it is not rescheduled in the event queue. The main configuration file contains a number of directives that affect how the Nagios daemon operates. Check result files that are older that this threshold will be deleted by Nagios and the check results they contain will not be processed. For detailed info please see Here. This option determines what type of information Nagios should write to the debug_file. Download and Extract the Nagios Core Setup More information on event handlers can be found here. Values The command argument is the short name of a command definition that you define in your object configuration file. The CGIs must have read access to this file in order to function properly. This option is used to set the high threshold for detection of service flapping. Once you figure out how things work, it'll all be well worth your time and effort. Unless the file is a named pipe you'll probably want to use the default mode of append. Enabling this option is useful for helping to ensure that passive host checks are received in a timely manner. The file is deleted when it is no longer needed. If a command exceeds this time limit it will be killed and a warning will be logged. Nagios Core is an free and open source Nework, Server and Application monitoring software. Nagios XI includes a built-in web configuration GUI, which makes it much easier to manage than Core. a suite of checks associated with a remote monitoring agent) but for which there is no guarantee that users will use the services associated with the host group or that the hosts will exists (e.g. The main configuration file contains a number of directives that affect how the Nagios Core daemon operates. If you leave off the "s", this is the number of "time units" to wait between external command checks. This is the file that Nagios will use for storing status, downtime, and comment information before it shuts down. Automation is used to generate a Nagios configuration file tree. This option determines whether or not Nagios will fork() child processes twice when it executes host and service checks. This menu provides the setting for the NagiosQL plugin. This value can be used in notification commands by using the $ADMINEMAIL$ macro. If you want to change this option when state retention is active (and the use_retained_program_state is enabled), you'll have to use the appropriate external command or change it via the web interface. You should run tmpwatch, or a similiar utility, on this directory occassionally to delete files older than 24 hours. En quelques minutes, nous avons installer Nagios-Core et Nagios-Vshell entièrement sur un serveur distant. This option determines how often (in seconds) Nagios will attempt to automatically reschedule checks. are as follows: This variable determines whether or not notification messages are logged. You'll need to read the Nagios source code to use this option effectively. This file contains the location of log file ⦠This option determines whether or not the Nagios daemon will take several shortcuts to improve performance. This option allows you to control the maximum amount of time in seconds that host and service check result "reaper" events are allowed to run. If you want to change this option when state retention is active (and the use_retained_program_state is enabled), you'll have to use the appropriate external command or change it via the web interface. Download OpenManage Plug-In Version 3.1 for Nagios Core gnu zip file. This variable determines whether or not Nagios will force all initial host and service states to be logged, even if they result in an OK state. Make sure Nagios Core is running â open it up in a web browser. Notify users via Nagios XI / Nagios Core, email, SNMP traps, or execute a script to ensure quick problem resolution. You can seperate your configuration information into several files and specify multiple cfg_file= statements to have each of them processed. You may specify either a groupname or a GID. This is where you define all the things you want monitor and how you want to monitor them. If this option is enabled and Nagios finds that results for a particular service check have not come back, it will log an error message and reschedule the service check. This setting determines whether or not Nagios will retain scheduling info (next check times) for hosts and services when it restarts. When Nagios is restarted it will use the information stored in this file for setting the initial states of services and hosts before it starts monitoring anything. This variable determines whether or not service check retries are logged. If checks exceed this limit, they are killed and a CRITICAL state is returned. Nagios Core Nagios network monitoring software is enterprise server monitoring Brought to you by: egalstad, jomann9, swilkerson. Nagios Core is a free and open source tool that allows you to monitor your entire IT infrastructure to ensure hosts, … In this tutorial you will be setting up configuration files with various options in Nagios Core. Zabbix allows you to change your configurations through a web-based interface. More information on external commands can be found here. ENABLING THE AUTO-RESCHEDULING OPTION CAN DEGRADE PERFORMANCE - RATHER THAN INCREASE IT - IF USED IMPROPERLY! "Units intervals" are used in the object configuration file to determine how often to run a service check, how often to re-notify a contact, etc. What (if any) information is written is determined by the debug_level and debug_verbosity options. It should be set to something high (like 60 seconds or more), so that each notification command finishes executing within this time limit. 3. The values for these options are a bitwise AND of values specified by the "MODATTR_" definitions in the include/common.h source code file. Default is 180 seconds (3 minutes). Importing of Data, backup files, configuration of Nagios Core , CGI configuration and syntax checking is available in this menu. improve this answer. Important: The default value for this is set to 60, which means that a "unit value" of 1 in the object configuration file will mean 60 seconds (1 minute). This value determines whether or not Nagios will "obsess" over service checks results and run the obsessive compulsive service processor command you define. Via a web interface, notification commands checking dependencies Nagios users, implementing additional configuration can! May result in the service check performance data file and disk usage you would need to create or edit you! Temporarily suppress notifications for any host or service interleave factor unless you have Nagios automaticaly rotate the debug.... 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