the road to continuous deployment (v6-16x9-devopsmoscow) · continuous delivery @michieltcs. dev...
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THE ROAD TO CONTINUOUS DEPLOYMENT - A CASE STUDY
MICHIEL ROOK
@michieltcs
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▸ Developer, consultant, trainer, speaker
▸ @michieltcs
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SAY MICROSERVICES
ONE MORE TIME
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WORKED FINE IN DEV
OPS PROBLEM NOW
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DEVOPS
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DEVSECOPS
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DEVSECQAOPS
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DEVSECQABIZOPS
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DEVSECQABIZNETOPS
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DEVSECQABIZSYSNETOPS
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DEVTESTSECQABIZSYSNETOPS
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STORY TIME
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@michieltcs
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@michieltcs
Large aging monolith
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@michieltcs
Large aging monolith
Generates income
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@michieltcs
Large aging monolith
Slow & complex
Generates income
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@michieltcs
Large aging monolith
Slow & complex
Generates incomeTechnical debt
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@michieltcs
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@michieltcs
Manual releases
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@michieltcs
Manual releases
Fragile tests
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@michieltcs
Manual releases
Frequent issues
Fragile tests
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@michieltcs
Manual releases
Frequent issues
Fragile testsLow velocity
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GOALS
@michieltcs
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GOALS
IMPROVE QUALITY
1
@michieltcs
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GOALS
IMPROVE QUALITY
REDUCE TIME TO MARKET
1 2
@michieltcs
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REFACTOR? REBUILD?
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APPROACH
▸ API first
▸ Services per domain object (job, jobseeker, ...)
▸ Migrate individual pages
@michieltcs
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ORIGINAL MONOLITH
DB
@michieltcs
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ORIGINAL MONOLITH
PROXY
SERVICEORIGINAL MONOLITH
DBDB
DB
@michieltcs
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ORIGINAL MONOLITH
PROXY
SERVICEORIGINAL MONOLITH
ORIGINAL MONOLITH
SERVICE SERVICE
SERVICE
PROXY
DBDB
DBDB
DB DB
@michieltcs
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ARCHITECTURE
FRONTENDS ARE SERVICES
@michieltcs
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ARCHITECTURE
FRONTENDS ARE SERVICES
SERVICES BEHIND LOAD BALANCERS
@michieltcs
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ARCHITECTURE
FRONTENDS ARE SERVICES
SERVICES BEHIND LOAD BALANCERS
SERVICES IN CONTAINERS
@michieltcs
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IMPROVING
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CONTINUOUS EVERYTHING
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DEV BUILD / TEST
CONTINUOUS INTEGRATION
@michieltcs
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DEV BUILD / TEST ACCEPTANCE PRODUCTION
CONTINUOUS DELIVERY
@michieltcs
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DEV BUILD / TEST STAGING / ACCEPTANCE PRODUCTION
CONTINUOUS DEPLOYMENT
@michieltcs
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EVERY COMMIT GOES TO PRODUCTION
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IF IT HURTS DO IT MORE OFTEN
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SMALL STEPS
@michieltcs
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SMALL STEPS EARLY FEEDBACK
@michieltcs
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SMALL STEPS EARLY FEEDBACK
REDUCE TIME TO RECOVER
@michieltcs
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SMALL STEPS
EXPERIMENTS!
EARLY FEEDBACK
REDUCE TIME TO RECOVER
@michieltcs
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ONLY COMMIT TO MASTER
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NO BRANCHES
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NO BRANCHESREALLY.
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DELAYING INTEGRATION
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CONFLICTS
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FEATURE TOGGLES
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DECOUPLE DEPLOYMENTSFROM RELEASES
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@michieltcs
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FEATURE TOGGLE DEBT
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CODE REVIEWS?
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PAIR PROGRAMMING
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CONTINUOUSINLINE CODE REVIEW
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BUILD PIPELINE
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CONNECT THE DOTS
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AUTOMATE REPEATABLE THINGS
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CONTINUOUS TESTING
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CONFIDENCE
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DEFENSE IN DEPTH
UNIT TESTS
INTEGRATIONTESTS
ACCEPTANCETESTS
UI TESTS
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DEFENSE IN DEPTH
UNIT TESTS
INTEGRATIONTESTS
ACCEPTANCE
UI TESTS
@Test public void jobCannotBeFound() { when(jobRepository.getById(EXPECTED_JOB_ID)) .thenReturn(null); JobService jobService = new JobService(jobRepository); assertNull(jobService.getById(EXPECTED_JOB_ID)); verify(jobRepository).getById(EXPECTED_JOB_ID); }
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DEFENSE IN DEPTH
UNIT TESTS
INTEGRATIONTESTS
ACCEPTANCETESTS
UI TESTS
@Test public void shouldFindJob() { expectedJob = loadFixture('active_job.yml'); actualJob = repository.getById(expectedJob.getId()); assertThat(actualJob, isA(Job.class)); assertEquals(expectedJob.getId(), actualJob.getId()); }
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DEFENSE IN DEPTH
UNIT TESTS
INTEGRATIONTESTS
ACCEPTANCETESTS
UI TESTSScenario: Link to related job Given a job exists And there are related jobs available When that job is viewed Then a list of related jobs is shown And each related job links to the detail page of the related job
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DEFENSE IN DEPTH
UNIT TESTS
INTEGRATIONTESTS
ACCEPTANCETESTS
UI TESTS
@michieltcs
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UNIT TESTS
INTEGRATION TESTS
ACCEPTANCE TESTS
UI TESTS
SMOKETESTS
Cost Speed
Exploratorytesting Monitoring
@michieltcs
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GOOD ENOUGH
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PIPELINE SPEED = KEY
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DEPLOYMENT
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ROLLING UPDATE
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LOAD BALANCER
ROLLING UPDATE
SERVICE V1.0 SERVICE V1.0SERVICE V1.0
@michieltcs
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LOAD BALANCER
ROLLING UPDATE
SERVICE V1.0 SERVICE V1.0SERVICE V1.0
SERVICE V1.1
@michieltcs
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LOAD BALANCER
ROLLING UPDATE
SERVICE V1.0 SERVICE V1.1SERVICE V1.0
SERVICE V1.0
@michieltcs
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LOAD BALANCER
ROLLING UPDATE
SERVICE V1.0 SERVICE V1.1SERVICE V1.0
SERVICE V1.1
@michieltcs
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LOAD BALANCER
ROLLING UPDATE
SERVICE V1.0 SERVICE V1.1SERVICE V1.1
SERVICE V1.0
@michieltcs
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LOAD BALANCER
ROLLING UPDATE
SERVICE V1.0 SERVICE V1.1SERVICE V1.1
SERVICE V1.1
@michieltcs
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LOAD BALANCER
ROLLING UPDATE
SERVICE V1.1 SERVICE V1.1SERVICE V1.1
SERVICE V1.0
@michieltcs
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LOAD BALANCER
ROLLING UPDATE
SERVICE V1.1 SERVICE V1.1SERVICE V1.1
@michieltcs
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PIPELINE AS CODEnode { stage('Run tests') { sh "phpunit" sh "behat" } stage('Build docker image') { sh "docker build -t jobservice:${env.BUILD_NUMBER} ." sh "docker push jobservice:${env.BUILD_NUMBER}" } stage('Deploy staging') { sh "ansible-playbook -e BUILD=${env.BUILD_NUMBER} -i staging deploy.yml" } stage('Deploy production') { sh "ansible-playbook -e BUILD=${env.BUILD_NUMBER} -i prod deploy.yml" } }
@michieltcs
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@michieltcs
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FEEDBACK!
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RESULTS
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@michieltcs
Team acceptance
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Feature toggle cap
@michieltcs
Team acceptance
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Feature toggle cap
Business alignment & agility
@michieltcs
Team acceptance
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Feature toggle cap
Business alignment & agility
Focus on replacing legacy
@michieltcs
Team acceptance
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Reduced number of
issues
1
@michieltcs
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Reduced number of
issues
1
Build time< 10 min.(50+ per
day)
2 4
@michieltcs
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Reduced number of
issues
1
Build time< 10 min.(50+ per
day)
Improved metrics & audience statistics
2 3
@michieltcs
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Reduced number of
issues
1
Build time< 10 min.(50+ per
day)
Improved metrics & audience statistics
Increased confidence, velocity &
fun
2 3 4
@michieltcs