Centreon documentation

Centreon documentation

  • Documentation

›Notification

Getting Started

  • Installation & first steps
  • Tutorials

    • Introduction
    • Create a custom view
    • Create a graphical view
    • Model your IT services
    • Analyze resources availability

Installation

  • Introduction
  • Prerequisites
  • Architectures
  • Download
  • Installation of a Central server

    • Using Centreon ISO
    • Using packages
    • Using virtual machines (VMs)
    • Using sources
  • Web And Post Installation
  • Installation of a Poller

    • Using Centreon ISO
    • Using packages

    Installation of a Remote server

    • Using Centreon ISO
    • Using packages
  • What is Centreon CEIP?

Secure your platform

  • Secure your platform
  • Secure your MAP platform

Monitoring

  • About Monitoring
  • Generic actions
  • Basic Objects

    • Macros
    • Commands
    • Time periods
    • Contacts
    • Hosts
    • Services
    • Meta Services
  • Templates
  • Plugin Packs
  • Monitoring Servers

    • Add a Poller to configuration
    • Add a Remote Server to configuration
    • Communications
    • Deploying a configuration
    • Advanced configuration
  • Groups & Categories
  • Passive Monitoring

    • Enable SNMP Traps
    • Create SNMP Traps definitions
    • Monitoring with SNMP Traps
    • Debug SNMP Traps management
    • Dynamic Service Management
  • Anomaly detection
  • Discovery

    • Introduction
    • Installation
    • Hosts Discovery
    • Services Discovery
    • Administration
  • Auto Remediation
  • Import/Export

Alerts & Notifications

  • Concepts
  • Resources Status
  • Events consoles
  • Manage alerts
  • Notification

    • Concept
    • Configuration
    • Dependencies
    • Escalation
    • Flapping
    • To go further
  • Ticketing
  • Event Logs

Performance graphs

  • Charts managment
  • Graph template
  • Curves
  • Virtual metrics

Service Mapping

  • Introduction to Centreon BAM
  • Guide

    • Manage Business Activities
    • Monitor Business Activities
    • Report Business Activities
    • Settings
    • Widgets

    Administrate

    • Install Centreon BAM extension
    • Update the extension
    • Upgrade the extension
    • Migrate the extension
    • Install on a Remote Server

Graphical views

  • Introduction to Centreon MAP
  • Guide

    • Create a standard view
    • Create a geo view
    • Display views
    • Share a view

    Administrate

    • Install Centreon MAP extension
    • Update the extension
    • Upgrade the extension
    • Migrate the extension
    • Configure
    • Install on a Remote server
    • Advanced configuration
    • Known issues
    • Troubleshooter

Reporting

  • Introduction to Centreon MBI
  • Guide

    • Generate reports
    • Available reports
    • Widgets
    • Configure
    • Concepts
    • Report development

    Administrate

    • Install Centreon MBI extension
    • Update the extension
    • Upgrade the extension
    • Migrate the extension
    • Backup & restore

Administration

    Parameters

    • Centreon UI
    • Monitoring
    • Gorgone
    • LDAP
    • RRDTool
    • Debug
    • Data management
    • Medias
  • Access Control Lists
  • Extensions
  • Database partitioning
  • Centreon HA

    • Architectures
    • Installing a Centreon HA 2-nodes cluster
    • Installing a Centreon HA 4-nodes cluster
    • Monitoring Centreon-HA
    • Operating guide
    • Updating Centreon-HA platform
    • Upgrade from Centreon-Failover to Centreon-HA
    • Troubleshooting guide
  • Backup
  • Knowledge Base
  • Logging configuration changes
  • Platform statistics

Update, Upgrade & Migrate

    Update

    • Update a Centreon 20.10 platform

    Upgrade

    • Introduction to upgrade
    • Upgrade from Centreon 20.04
    • Upgrade from Centreon 19.10
    • Upgrade from Centreon 19.04
    • Upgrade from Centreon 18.10
    • Upgrade from Centreon 3.4

    Migrate

    • Introduction
    • Migrate from a Centreon 20.x platform
    • Migrate from a Centreon 3.4 platform
    • Nagios Reader to Centreon CLAPI
    • Migrate a platform with Poller Display module

Plugin Packs

  • Introduction to Plugin Packs
  • Tutorials

    • Collect OpenMetrics

    Applications

    • 3CX
    • Active Directory API
    • ActiveMQ JMX
    • Alyvix Server
    • Ansible
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    • Antivirus ClamAV
    • Apache Server
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    • Asterisk VoIP SNMP
    • Bind9 Web
    • BlueMind SSH
    • Cassandra
    • Cisco CMS
    • Cisco ISE
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    • Commvault CommServe Rest API
    • DRBD SSH
    • Dynatrace Rest API
    • EMC PPMA Rest API
    • Exchange 2010 API
    • Github
    • Github
    • Google Gsuite
    • Haproxy SNMP
    • Hibernate
    • IBM Tivoli Storage M
    • Microsoft DHCP SNMP
    • Microsoft IIS Server Restapi
    • Microsoft IIS Server NSClient API (Deprecated)
    • JBoss Server
    • Jenkins
    • Kafka
    • Kaspersky
    • Keepalived SNMP
    • Lync 2013
    • Maltem Insight Rest API
    • IP-Label datametrie API
    • IP-Label Newtest Rest API
    • McAfee Web Gateway
    • Microsoft Cluster Se
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    • Microsoft SCCM
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    • SAP HANA
    • SCOM Rest API
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    • Selenium
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    • Skype 2015
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    • Solr
    • Squid SNMP
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    • Tomcat JMX
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    • Veeam API
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    • Weblogic Server
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    Centreon

    • Centreon Central
    • Centreon Database
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    • Centreon MBI
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    Cloud

    • Amazon API Gateway
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    Database

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    Hardware Server

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    Network

    • 3com Network
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    Operating System

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    Printer

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    Protocol

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    Ups Pdu

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Integrations

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    Notifications

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Mobile App.

  • Introduction

API

  • Introduction
  • Command Line API (v1)
  • Rest API (v1)
  • Rest API (v2)
  • Graphical views API (beta)

Developer resources

  • About developer resources
  • How to write a module
  • How to write a Stream Connector
  • How to translate Centreon
  • How to write a widget
  • Centreon Broker

    • Stream connectors
    • The BBDO protocol
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Releases

  • Centreon Platform 20.10.0
  • Products lifecycle policy
  • Release notes by component

    • Centreon Core
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    • Open Source Extensions
Edit

Dependencies

Principle

Dependencies are used to satisfy two main requirements:

  • Reduce alert fatigue
  • Target the alerts

The dependencies of objects are of two types:

  • Physical dependencies between objects: a load balancing switch is situated upstream of a set of servers and downstream of a router
  • Logical dependencies between objects: the access to a website with authentication LDAP depends on the status of the LDAP directory itself

Physical dependencies

Physical dependencies consist of taking into account physical links between equipment. This link can only be defined for Host.

The configuration of a physical dependencies takes place in the Relations tab of a configuration sheet of a host through Configuration > Hosts > Hosts menu.

image

It is possible of define two settings:

  • Parent Hosts: signifies that the hosts selected are parents of this host (situated upstream). If all the parent hosts selected become unavailable or impossible to reach the host itself will be considered by the scheduler as impossible to reach.
  • Child Hosts: signifies that the host becomes the parent of all the child hosts selected.

It is not possible to have dependencies between hosts from different pollers.

All the parents of a host must be in a Not-OK status for the host itself to be considered impossible to reach. If only one access path is down (physical dependencies link), the scheduler will continue to monitor this host.

Logical dependencies

Logical dependencies consist of installing logical links between multiple objects that may or not be of different types. E.g.: a service is in charge of supervising the access to a web page requiring an authentication based on a LDAP. It is logical that if the LDAP server is down, the access to the web page will be difficult or even impossible. In this situation, the notification issued should only be communicated to the LDAP directory and not to the website.

Hosts

To configure a logical dependency, go into the Configuration > Notifications > Dependencies > Hosts menu and click Add.

image

In this case, we have two types of host that come into play: one or more hosts (called master hosts) of which the status controls the execution and notification of other hosts (called dependent hosts). If you use the Centreon Broker, it is also possible to control the execution and notification of services (called dependent services) from master hosts.

  • The Name and Description fields indicate the name and the description of the dependencies
  • The Parent relationship field should be ignored if you use the Centreon Engine. If it is enabled, and if the dependencies links of the master host become unavailable, the dependencies in the process of creation is not taken into account.
  • The Execution Failure Criteria field indicates the statuses of the master host(s) preventing the check of the hosts or the dependent services
  • The Notification Failure Criteria field indicates the statuses of the master host(s) preventing the sending of notifications to the hosts or the dependent services
  • The Hostnames list defines the master host(s)
  • The Dependent Host Names list defines the dependent hosts
  • The Dependent Services list defines the dependent services
  • The Comments field can be used to comment on the dependencies

Services

To configure a logical dependency, go into the Configuration> Notifications > Dependencies > Services menu and click Add.

image

In this case, we have two entities that come into play: the (“master”) services which control the execution and the notification of other (“dependent”) services. If you use Centreon Broker, it is also possible of control the execution and the notification of other hosts.

  • The Name and Description fields indicate the name and description of the dependencies
  • The Parent relationship field should be ignored if you use the Centreon Engine. If it is enabled, and if the links of dependencies of the master service become unavailable the dependencies in the process of creation is no longer taken into account.
  • The Execution Failure Criteria field indicates the statuses of the master service(s) preventing the check of the hosts or the dependent services
  • The Notification Failure Criteria field indicates the statuses of the master service(s) preventing the sending of notifications to the hosts or the dependent services
  • The Services list defines the master service(s)
  • The Dependent services list defines the dependent services
  • The Dependent hosts list defines the dependent hosts
  • The Comments field can be used to comment on the dependencies

Host groups

To configure a logical dependency, go into the Configuration> Notifications > Dependencies > Host Groups menu and click Add.

image

Two types of host groups: a host group is called a master if it controls the execution and the notification of other (“dependent”) host groups.

  • The Name and Description fields indicate the name and the description of the dependencies
  • The Parent relationship field should be ignored if you use the Centreon Engine. If it is enabled, and if the links of dependencies of the master host group become unavailable the dependencies in the process of creation is no longer taken into account.
  • The Execution Failure Criteria field indicates the statuses of the master host group(s) preventing the check of the dependent host groups
  • The Notification Failure Criteria field indicates the statuses of the master host(s) preventing the sending of notifications to the dependent host groups
  • The Host groups name list defines the master host group(s)
  • The Dependent host group name list defines the dependent host group(s)
  • The Comments field can be used to comment on the dependencies

Service groups

To configure a logical dependency, go into the Configuration> Notifications > Dependencies > Service Groups menu and click Add.

image

Two types of service group: a service group is called a “master” if it controls the execution and the notification of other (“dependent”) service groups.

  • The Name and Description fields indicate the name and the description of the dependencies
  • The Parent relationship field should be ignored if you use the Centreon Engine. If it is enabled, and if the links of dependencies of the master service group become unavailable the dependencies in the process of creation is no longer taken into account.
  • The Execution Failure Criteria field indicates the statuses of the master service group(s) preventing the check of the dependent service groups
  • The Notification Failure Criteria field indicates the statuses of the master host(s) preventing the sending of notifications to the dependent service groups
  • The Service group names list defines the group(s) of master services
  • The Dependent service group names list defines the group(s) of dependent services
  • The Comments field can be used to comment on the dependencies

Meta-services

To configure a logical dependency, go into the Configuration> Notifications > Dependencies > Meta Services menu and click Add.

image

Two types of meta-services: a meta-service is called a “master” if it controls the execution and the notification of other (“dependent”) meta-services.

  • The Name and Description fields indicate the name and description of the dependencies
  • The Parent relationship field should be ignored if you use the Centreon Engine. If it is enabled, and if the links of dependencies of the master meta-service become unavailable the dependencies in the process of creation is no longer taken into account.
  • The Execution Failure Criteria field Indicates which are the statuses of the meta-master service(s) that will prevent the check of the meta-dependent services
  • The Notification Failure Criteria field indicates the statuses of the meta-service(s) preventing the sending of notifications to meta-dependent services
  • The Meta-service name list defines the master meta-service(s)
  • The Dependent meta-service names list defines the dependent meta-service(s)
  • The Comments field can be used to comment on the dependencies

Examples

This sub-chapter illustrates the use of these dependencies via a few actual cases.

The dependencies are based on failure criteria that is “do not do if”. Do not notify if the service is in a Critical state. Do not perform the check if the service is in a Critical, Alert, Unknown, … state.

Services dependencies

A service is checked using a Selenium scenario. This scenario connects to a web interface with an identifier and a password. This connection information is stored in a MariaDB database.

Consequently, if the database server does not reply, the Selenium scenario cannot complete. It seems obvious that it is necessary to create a logical dependency link between the service which uses the Selenium scenario and the service that is responsible for checking the status of the MariaDB server.

Moreover, considering that the Selenium scenario cannot perform properly, no performance data can be stored in the database. So, it is necessary not only to stop the notification for the service using the Selenium scenario but also the check.

To create this dependency, go into the Configuration> Notifications > Dependencies > Services menu and click Add.

  1. Enter the name and the description of the dependency
  2. For the Execution Failure Criteria and Notification Failure Criteria fields, check Warning, Critical, Unknown and Pending
  3. In the Services list select the service that is responsible for checking the status of the MariaDB server
  4. In the Dependent Services list, select the service that uses the Selenium scenario
  5. Save

From now on, if the service responsible for checking the status of the MariaDB server has “Warning”, “Critical”, “Unknown” or “Pending” status, the service responsible for executing the Selenium scenario will not be executed until the master recovers its OK status.

Hosts dependencies

Let us take the case of two hosts which operate as a cluster. Three hosts are created to be able to monitor this cluster: a host A, a host B (both members of the cluster) and a host C (which centralizes the information from the cluster).

If host A or host B has a Not-OK status the services of host C will automatically be considered to be Not-OK. So, it is necessary to add a dependency which prevents the sending of notifications if host A or host B become faulty. However, performance data feed-back must always be operational; this is why it is necessary to continue the monitoring of host C.

To create this dependency, go into the Configuration> Notifications > Dependencies > Hosts menu and click Add.

  1. Enter the name and the description of the dependency
  2. For the Notification Failure Criteria field, check Warning, Critical, Unknown and Pending
  3. In the Host Names list, select host A
  4. In the Dependent Host Names list select host C
  5. Save

Repeat this operation for host B.

Service Groups dependencies

Let us take the example of a set of Oracle services on which the ERP application bases itself. Two service groups are needed:

  • The Oracle Application group
  • The ERP Application group

If the Oracle services become critical, the services of the ERP application are automatically critical. It is necessary to create a dependency link to prevent the check and notification of the services of the application ERP if the Oracle application is Not-OK.

To create this dependency, go into the Configuration> Notifications > Dependencies > Service Groups menu and click Add.

  1. Enter the name and the description of the dependency
  2. For the Execution Failure Criteria and Notification Failure Criteria fields, check Critical and Pending
  3. In the Service Group Names list select the service group Oracle Application
  4. In the Dependent Service Group Names list, select the service group ERP Application
  5. Save
← ConfigurationEscalation →
  • Principle
  • Physical dependencies
  • Logical dependencies
    • Hosts
    • Services
    • Host groups
    • Service groups
    • Meta-services
  • Examples
    • Services dependencies
    • Hosts dependencies
    • Service Groups dependencies
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