What is the difference between active check and passive check?

The major difference between active and passive checks is that active checks are initiated and performed by Nagios, while passive checks are performed by external applications.

What are active checks?

Active checks are the most common method for monitoring hosts and services. The main features of actives checks as as follows: Active checks are initiated by the Nagios process. Active checks are run on a regularly scheduled basis.

What is active check Nagios?

Active checks are initiated by Nagios process and then run on a regular scheduled basis. The check logic inside Nagios process starts the Active check. To monitor hosts and services running on remote machines, Nagios executes plugins and tells what information to collect.

What is the protocol used to send passive checks in Nagios?

In order to allow remote hosts to send passive check results to the monitoring host, you can use either the NSCA or NRDP addon.

What is hard and soft state in Nagios?

There are two state types in Nagios Core - SOFT states and HARD states. These state types are a crucial part of the monitoring logic, as they are used to determine when event handlers are executed and when notifications are initially sent out.

Zabbix Agent - Active vs Passive check

What is active and passive checks in Nagios?

The major difference between active and passive checks is that active checks are initiated and performed by Nagios, while passive checks are performed by external applications.

What are state types of Nagios?

There are two state types in Nagios - SOFT states and HARD states. These state types are a crucial part of the monitoring logic, as they are used to determine when event handlers are executed and when notifications are initially sent out.

What is OID in Nagios?

SNMP (Simple Network Management Protocol) is a network protocol designed for monitoring network-attached devices. It uses OIDs (Object IDentifiers) for defining the information, known as MIBs (Management Information Base), that can be monitored.

How does Nagios check host status?

What is NCPA in Nagios?

Purpose. This document describes how to use Nagios XI to actively monitor machines via the Nagios Cross Platform Agent (NCPA). NCPA is an advanced, cross-platform agent that can be installed on Windows / Linux / AIX / Mac OS X machines.

Is Nagios push or pull?

Nagios uses agents that are installed on both the network elements and the components that it monitors; they collect data using pull methodology.

What is event handler in Nagios?

Event handlers are optional system commands (scripts or executables) that are run whenever a host or service state change occurs. An obvious use for event handlers is the ability for Nagios to proactively fix problems before anyone is notified. Some other uses for event handlers include: Restarting a failed service.

What is Nrpe?

Nagios Remote Plugin Executor (NRPE) is a Nagios agent that allows remote system monitoring using scripts that are hosted on the remote systems. It allows for monitoring of resources such as disk usage, system load or the number of users currently logged in.

What is active and passive checks in Zabbix?

Using those, you can increase the number of processes on the agent side. The additional benefit of the active checks is that the agent has a memory buffer for those checks. This means that you won't lose the data in case of a network issue. Using passive checks means that you cannot use the buffer.

Can Nagios monitor devices?

Nagios is an open source monitoring system for computer systems. It was designed to run on the Linux operating system and can monitor devices running Linux, Windows and Unix operating systems (OSes). Nagios software runs periodic checks on critical parameters of application, network and server resources.

What is the difference between Zabbix agent and Zabbix agent active?

A Zabbix agent can also be installed on UNIX and Windows hosts to monitor statistics such as CPU load, network utilization, disk space, etc. Zabbix Active checks are needed when it is not possible for the Zabbix server to access a specific port on the remote monitored machine. ...

How do I turn off active checks in Nagios?

What is Nagios configuration file?

By default, the CGI configuration file of Nagios is named cgi. cfg. It tells the CGIs where to find the main configuration file. The CGIs will read the main and host config files for any other data they might need. It contains all the user and group information and their rights and permissions.

How do I monitor a Nagios server?

What is SNMP MIB and OID?

SNMP systems have OIDs that define each thing for the SNMP agents and manager. We can compare MIB to OID as being similar to a domain name to an IP address. OIDs point to network monitoring objects stored in a database called the Management Information Base (MIB).

What is SNMP MIB?

The SNMP MIB defines the data types and access permissions for the various managed objects that can be accessed through the BEA SNMP Agent software. It also defines the event notifications that can be generated by the BEA SNMP Agent software.

What is the function of OID?

An OID is a unique identifier that locates an element within the structure of a parsed document instance. The OID also records to which document instance the element belongs. This means you can save an OID in a variable, and then later refer to it in OID functions. It makes no difference what the current document is.

What are state types?

Types of states. Charles Tilly distinguished between empires, theocracies, city-states and nation-states. According to Michael Mann, the four persistent types of state activities are: Maintenance of internal order.

What is the current version of Nagios?

The latest version of Nagios Core is 4.4. 7 was released on 2022-04-14.

How do I turn on notifications in Nagios?

Enable system wide notifications

Select Configuration > Nagios Monitoring > Control > Nagios main configuration, and click Notification. Select the box next to Enable Notifications to enter a check which indicates notifications are on. At the bottom of the page, click Save and Next to save this change.