Icinga Camp Antwerp - Icinga2 Configuration

WWW.ICINGA.ORG
Icinga Camp - Antwerp
04/13/2015 Icinga - Open Source Monitoring

EXCHANGE. DEV. WIKI. BLOG. DOC. | WWW.ICINGA.ORG
#icinga
Me
• Michael Friedrich
• @dnsmichi, 31, Austrian
• Application Developer @NETWAYS
• Icinga responsibilities
• Core 1.x & 2.x Developer
• Release Manager
• Doing Icinga since May 2009

#icinga
Icinga 2 - Overview
• Stable Version: 2.3.3 (26.3.2015)
• Next major version: 2.4.0 (Q4 2015)
• Supports all major distributions
• Puppet, Chef and Ansible support
• Packages and Vagrant Box available now!
https://dev.icinga.org/projects/i2/roadmap

#icinga
Icinga 2 - Overview
• Powerful CLI
• MySQL & PostgreSQL support
• New configuration format
• Includes a extensive template library
• Compatible with plugins, addons, UIs

Icinga 2 - Configuration
• New configuration format
• Won’t miss the old config syntax!
• It is really time for change
• You will love it!
#icinga

#icinga
Icinga 2 – Configuration: Syntax Highlighting
# cd /usr/share/doc/icinga2-common*/syntax
# PREFIX=~/.vim
# mkdir –p $PREFIX/{syntax,ftdetect}
# cp vim/syntax/icinga2.vim $PREFIX/syntax/
# cp vim ftdetect/icinga2.vim $PREFIX/ftdetect/
# vim /etc/icinga2/icinga2.conf
• Use syntax highlighting!

#icinga
Icinga 2 – Configuration: Console
# yum install rlwrap
# rlwrap icinga2 console
• Use ‘icinga2 console’ to test values, functions, etc!
• https://www.icinga.org/resources/live-console/
• Install rlwrap 

#icinga
Icinga 2 – Configuration: Value Types
• Get to know all the value types!

#icinga
Icinga 2 – Configuration: Constants
• PluginDir, MysqlPassword, SnmpCommunity, …

#icinga
Icinga 2 – Configuration: Templates
• Templates for generic attributes

#icinga
Icinga 2 – Configuration: Custom Attributes
• Numbers, Strings, Booleans, Arrays, Dictionaries
• Filters, Match Conditions, additional information

#icinga
Icinga 2 – Configuration: Commands
• Optional/conditional arguments, functions, default values

#icinga
Icinga 2 – Hosts and Services
• Checkable objects and attributes

#icinga
Icinga 2 – Configuration: Apply Services
• Match on (custom) attributes, names (assign)
• Exclude objects (ignore)

#icinga
Icinga 2 – Configuration: Apply For
• For loops over arrays/dictionaries

#icinga
Icinga 2 – Configuration: Notifications
• Dynamic notification rules

#icinga
Icinga 2 – Configuration: Dependencies
• Host-on-Service, Service-on-Host, Classic
HOST
router
SERVICE
router-uplink
Icinga 2
HOST
website-server
Reachable?

#icinga
Icinga 2 – Configuration: Conditionals
• If-then-else

#icinga
Icinga 2 – Configuration: Loops
• While, for and break/continue

#icinga
Icinga 2 – Configuration: Type methods & Object Accessors
• Array#sort, Dictionary#contains, String#find, …
• http://docs.icinga.org/icinga2/latest/doc/module/icinga2/chapter/language-reference#language-reference
• http://docs.icinga.org/icinga2/latest/doc/module/icinga2/chapter/library-reference#library-reference
• Object accessors
– get_host(), get_service(), etc
– Access config and runtime attributes
– e.g. get_host(NodeName).state

#icinga
Icinga 2 – Configuration: Functions
• Use pre-defined or your own
– regex(), match(), …
• Custom attributes, command, argument values

Icinga 2 – Configuration – Another cool thing
#icinga

#icinga
Icinga 2 – Configuration – Time dependent thresholds
• Time dependent thresholds

Icinga 2 - Migration
• Start with a fresh server
• Inventory of plugins & configuration
• Define your configuration strategy with Icinga 2
• Create the best Command and Apply definitions only once
• Only add hosts (and users) in the future
• More migration hints on the docs!
http://docs.icinga.org/icinga2/latest/doc/module/icinga2/chapter/migration#migration
#icinga

Icinga 2 – Migration: Assign service to hosts in Icinga 1.x
define service{
host_name linux1,linux2,linux3,...,linux9
service_description ssh-check
other service directives ...
}
#icinga

#icinga
Icinga 2 – Migration: Apply service to hosts in Icinga 2
apply Service "ssh" {
import "generic-service”
check_command = "ssh”
assign where host.address && host.vars.os == "Linux”
}

#osmc
Icinga 2 – Migration – Assign members to Hostgroup in Icinga 1.x
define hostgroup{
hostgroup_name linux-servers
alias Linux Servers
members linux1,linux2,linux3
}

#osmc
Icinga 2 – Migration – Assign members to Hostgroup in Icinga 1.x
object Host “mysql-server1" {
address = "10.0.0.1“
check_command = "hostalive“
}
object HostGroup "mysql-server" {
display_name = "MySQL Server“
assign where match("*mysql*", host.name)
}

#icinga
Icinga 2 - Demo
DEMO

#icinga
Icinga 2 – Demo
Get VirtualBox >= 4.2.16 && Vagrant >= 1.6.5
$ git clone --recursive https://github.com/Icinga/icinga-vagrant.git
$ cd icinga-vagrant
$ cd icinga2x-cluster
$ vagrant up
$ vagrant ssh icinga2a
$ vagrant ssh icinga2b
$> sudo –i
http://192.168.33.10 & http://192.168.33.20

Conclusion
• Download Icinga 2
– Use packages
– Play with Vagrant and VirtualBox
• Rethink you configuration strategy
– Follow extensive migration docs, it is time for a change!
• Install Icinga Web 2 and play with it
• Give us feedback
– dev.icinga.org
– IRC
– Twitter
#icinga

Vision
• No enterprise edition
• Enterprise integration
#icinga

#icinga
Questions & Answers
Web www.icinga.org
Git git.icinga.org
Development dev.icinga.org
Wiki wiki.icinga.org
Support support.icinga.org
Twitter twitter.com/icinga
Facebook facebook.com/icinga Get support
Get involved
Get heard

Icinga Camp Antwerp - Icinga2 Configuration

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