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Infrastructure CodersMcollective: An introduction to the marionette. Melbourne 06-06-2012

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Javier Turégano#devops @setoide#opensource#it-management

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DisclaimerNot mcollective Ninja

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Why do we need orchestration?

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Example architecture Balancer Webapp Webapp Webapp Bdd

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Use case: Add one webapp server Deploy Provision Apply config Last version new node as webserver Of App Add to Grant access Start LoadBalance to DB webserver r Activate In Prod! monitoring

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Use case: Deploy new version Update Provision 1 Db schema New app Send traffic (addings) server Update Replace Test Db schema App servers (removals) In Prod!

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Some options available Func Fabric Capistrano mcollective

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Marionete Colective mcollective is a framework to build serverorchestration or parallel job execution systems Created by R.I. Pienaar

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Is it better than an SSH loop?Asynchronous/Event drivenScalableRIP Hostnames – use facts, classes.Modular (security, middleware, agents)Auto discoveryDe-centralized inventory

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Architecture

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Install middleware# apt-get install rabbitmq# rabbitmqctl add_user mcollective marionette# rabbitmqctl set_user_tags mcollective administrator# rabbitmqctl set_permissions -p / mcollective ".*" ".*" ".*"

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Install mcollectiveIn your servers:# sudo apt-get install mcollectiveIn your admnistrators machines:# sudo apt-get install mcollective-client

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Configure mcollectivetopicprefix = /topic/main_collective = mcollectivecollectives = mcollectivelibdir = /usr/share/mcollective/pluginslogfile = /var/log/mcollective.logloglevel = infodaemonize = 0# Pluginssecurityprovider = pskplugin.psk = unsetconnector = stompplugin.stomp.host= masterplugin.stomp.port= 6163plugin.stomp.user= mcollectiveplugin.stomp.password= marionette# Factsfactsource = facter

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Advanced config Some interesting options:loglevel=debug#factsource = facterfactsource = yamlplugin.yaml = /etc/mcollective/facts.yamlclassesfile = /var/lib/puppet/state/classes.txt

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Puppet modulesPuppet modules available. For RHEL: puppetlabs/rabbitmq puppetlabs/mcollective

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DEMO TIME!

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Finding nodesTargeting nodes using facts and classes:# mc-ping# mc-find-hosts -F virtual=virtualbox# mc-find-hosts -F “memoryfree>100M”# mc-find-hosts -C mcollective -F operatingsystem="Ubuntu"

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InventoryPowerful distributed inventory system:# mc-facts virtual# mc-facts processorcount# mc-inventory box01

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Plugins You can get plugins from:http://projects.puppetlabs.com/projects/mcollective-plugins/wiki Facts-facter Filemgr Iptables Package Process Puppetd Service

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Using the filemgr plugin# mco rpc filemgr status file=/tmp/filemgr

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Using the iptables plugin# mco iptables block 192.168.0.0 -C base -vNode01 # iptables -L -n -v

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Using the package plugin# mco package status vim-puppet -C base -v# mco package uninstall vim-puppet -C base -v

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Executing puppet# mco puppetd status -C baseEdit puppet base class# mco puppetd runonce 1 -v -C baseCheck output in /var/log/syslog

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RIPHosnames QUESTIONS?

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Images http://www.flickr.com/photos/ag2r/3783369226/http://www.flickr.com/photos/31348155@N03/5584078173/http://www.flickr.com/photos/61927538@N00/205992050/http://www.flickr.com/photos/safari_vacation/5842069535