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A Case Study in UsingErlang and Rubyat Rackspace
PolyglotParallelism
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FoundationDevelopmentAndAutomationTeam
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F D A A T
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WhatWeDo
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Through automation,Adapt and collaborate
Deliver Software
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Basics
BackupUpdateNew Configs
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Advanced
API backing MyRackspace FWMAPI backing NTaaSAPI for VLAN assignments
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TheEnvironment
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50,000NetworkDevices
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Firewalls
Cisco ASACisco PixJuniper SRX
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Load
Cisco CSSF5 BigIPBrocade ADX
Balancers
RedHill WebMuxCisco ACE
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Switches
Cisco Catalyst 4948
Cisco Catalyst 2950Cisco Catalyst 2960
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8 Datacenters3 Continents
Asia
North AmericaEurope
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TheChallenges
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Performance
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Transparency
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MultipleDeviceTypes
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ManagementInterfaces
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WhereWeStarted
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MultipleRailsApplications
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MySQL
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VendorDeviceManagers
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3rdPartySolutions
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WhereWeAreToday
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Rails
MongoDB
Erlang
ReST API
Other Clients
NetworkDevices
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Results
Device interactions are fast & reliableFull TransparencyBetter foundation for growth
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Details
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CommandLineAutomation
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Agent
SSH TelnetHTTP
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RubyScripts
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module Hello def say_hello "Hello, World!" endend
GenScript.expose(:hello, Hello)
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{ok, Pid} = gen_script:start(hello, {ruby, “hello.rb”}).
<<"Hello, World!">> =gen_script:call(Pid, hello, [])).
gen_script:stop(Pid).
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BatchJobs
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Runner
CallbackModuleWorkers
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Runner Worker CallbackModule
start
ready
process processready
.
.
.stop
item
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What’sNext
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Rails
MongoDB
Erlang
ReST API
Other Clients
NetworkDevices
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HowWeGotHere
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Objections
Erlang is weirdYou can’t find Erlang programmersIf you use Erlang you will fail
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OpenSource
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Questions
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Twitter: @philtoland
GitHub: github.com/toland
Blog: philtoland.com
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