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What makes AWS invincible? from JAWS Days 2014
 

What makes AWS invincible? from JAWS Days 2014

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    What makes AWS invincible? from JAWS Days 2014 What makes AWS invincible? from JAWS Days 2014 Presentation Transcript

    • What makes AWS invincible? Haruka Iwao, 2014/03/15
    • Before talking about AWS
    • About myself Haruka Iwao (@Yuryu) DevOps Engineer at FreakOut, Inc. Lived in Osaka, Tsukuba, Yokohama. Now in Tokyo. Playing FFXIV ARR
    • Me Final Fantasy XIV ARR Status: Cleared the Coil Turn 5. Got my Allagan Weapon.
    • Kindle Publishing Publishing Kindle books about the Linux Kernel Search “Yuryu Linux”
    • About FreakOut, Inc. Not about freaking out :p Advertisement company Established in 2010 “Real-time Bidding”
    • Real-time bidding SSP Supply-side Platform DSP Demand-side Platform DSP Demand-side Platform DSP Demand-side PlatformRequest a page Read an ad tag Call for bids DSP decides the best ad for the user and page
    • Real-time bidding (2) SSP Supply-side Platform DSP Demand-side Platform DSP Demand-side Platform DSP Demand-side Platform Bid Auction Return the winning ad
    • Real-time bidding (3) http://londoncreative.com/real-time-bidding-spending-to-significantly-increase/
    • Our motto 50ms or die. Return a response within 50ms or lose an auction automatically. Latency matters. Literally.
    • How we use AWS
    • Our system at a glance http://aws.amazon.com/jp/solutions/case-studies/freakout/
    • Mix of on-premise and AWS On-premise in Japan AWS in North America Starting small Scaling well No need to visit a DC
    • Latency matters
    • Latency matters Latency is important for our service 1ms = 1/50 of processing time
    • Latency between servers Freedom to build an arbitrary network ... Gives you an arbitrary latency
    • Longer latency in AWS  On-premise time=0.063 ms time=0.083 ms time=0.077 ms time=0.070 ms time=0.092 ms time=0.069 ms time=0.077 ms  AWS, extreme case time=1.88 ms time=1.96 ms time=2.60 ms time=3.72 ms time=2.46 ms time=1.05 ms time=2.37 ms
    • Longer latency in AWS (2) Hard to see? Let’s make a graph...
    • Longer latency, illustrated 0 0.5 1 1.5 2 2.5 On-premise AWS RTT(ms) RTT(ms)
    • Longer latency in AWS (3) This is not always true Just an extreme case This applies to intra-AZ “Option” to group servers in near racks would be great
    • Placement groups Placement groups are not enough Only available to cluster compute instances Guarantees bandwidth, not latency
    • Possible workarounds Assume the latency Design your app accordingly Use persistent connections Put hot data on local Still, lower latency gives “extra” room
    • Infrastructure as Code
    • The “Awesome” Console
    • ... So awesome to make mistakes easily...
    • AWS is Programmable.
    • Thou hast SDK. Python
    • Thou hast CLI. CLI
    • Thou hast CloudFormation. AWS CloudFormation
    • SDK + CLI + CloudFormation You can “code” your infrastructure Infrastructure becomes “reproducible” and “reusable”
    • Always use CLI Always use CLI to make changes “Review” the commands Less chance of “oops” But...
    • CLI is hard to understand!
    • VS aws ec2 run-instances --image-id ami-xxxxxxxx -- count 1 --instance-type t1.micro --key-name MyKeyPair --security-group-ids sg-xxxxxxxx --subnet-id subnet-xxxxxxxx
    • Easy enough?
    • No way...
    • Record & Play “Record” instructions on the Web Console “Playback” them using CLI In other words...
    • Converted to aws ec2 run-instances --image-id ami-xxxxxxxx -- count 1 --instance-type t1.micro --key-name MyKeyPair --security-group-ids sg-xxxxxxxx --subnet-id subnet-xxxxxxxx
    • With “playback” You could review changes beforehand You could record changes and reuse them Easier than writing CLI commands by hand
    • A very famous quote about “code”
    • All your code are belong to test
    • Testing is Important Every program has bugs “Infrastructure as Code” is no exception
    • How do you test?How do you test?
    • Bugs can be fatal A bug can destroy your whole system What if you accidentally Terminate an instance Set a wrong route table Delete RR from Route53
    • “Sandbox” for testing VPC is (sometimes) not enough Test 100% bootstrap in a safe environment Register IAM accounts Add Route53 zones Set up S3 buckets, etc…
    • Framework for testing Test-kitchen to test your Chef cookbooks Serverspec to test your server setups How do you verify your changes to AWS?
    • Possible workarounds Use a separate account Maybe we need more environments in the future? Costs money CloudFormer converts environments to configuration
    • Scenario #1 You add a new rule to your security group aws ec2 authorize-security-… You want to make sure a port is open or closed between particular hosts How?
    • Workaround #1 Create a new VPC Apply the new rule Launch two instances Check connectivity
    • Scenario #2 You set up Route53 Health Checks Now you want to test if it actually fails-over How?
    • Workaround #2 Set up two ELBs / instances Stop instances registered to one ELB Query to R53 until it fails- over
    • Need a solution! A “common language” to verify AWS configuration Want to run tests cheaper, quicker and safer Even the requirements are not yet clear…
    • In the end of the presentation…
    • What makes AWS invincible? Lower latency Giving options or hints to EC2 “Playback” feature Generate CLI commands using simple UI Testing methodology
    • Thank you!