continuous delivery en banque
TRANSCRIPT
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Making a Mammoth Run
Continuous Delivery in a bank
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I am Laurent GrangeauI love to automate things and run apps at scale. You can find me at @laurentgrangeau
Hello!
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Overview of softwares in bank industries1
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Banking overview
Old codeThere is lots of legacy code. Generally, the code base is > 5 years old.
No agile processMostly waterfall process, ITIL compliant.
RegulationBanks can’t do what they want. There is a lot of regulation and audits.
Monolithic softwaresAs softwares were designed years ago, there is little microservices, and no 12factor principles.
Releases are manualGenerally, release is a manual process with service interruption.
Obsolete infrastructuresThere are still mainframe computers or specialized appliances like Sparc machines.
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Fintechs arrival2
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$12.7 billions funding
1.000+ companies
Leverage on cutting edge technologies
Fintech landscape
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Appears in 2008
$921 millions cumulative investment
805 blockchain startups
$4.9 billions Bitcoin capitalisation
Blockchain ecosystem
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Fintechs are taking market
shares…It’s time to
react !
BANKS
FINTECHS
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Continuous Delivery program3
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Be like the GAFABe faster, bring more business value,
reduce maintenance costs
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Why ?
◉ Faster time to market=> Competitive advantage
◉ Better quality of product=> Higher customer satisfaction
◉ Processes optimized=> Reduced total cost of ownership
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Change management
Agile coachesBring more business value, involve stakeholders.
ex. Scrum, Kanban, Backlog grooming, …
Software craftsmanship coachesBuild robust, testable and sustainable code.
ex. TDD, BDD, Clean code, …
DevOps coachesAutomate the delivery.
ex. IaC, Automated deployment, …
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Agile pillar
◉ What is Agile ?◉ “Our highest priority is to satisfy the
customer through early and continuous delivery of valuable software”
◉ Why ?◉ Increase quality of delivery and reduce
time to market
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Agile pillar
◉ Scrum/Kanban product backlog management
◉ Backlog grooming◉ Story mapping◉ Business analysts involved◉ Iterative development◉ Minimum viable product◉ …
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Have rapid feedbackIterative development, deliver value to
customers, people collaboration, respond to change
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Software craftsmanship pillar
◉ What is software craftsmanship ?◉ “Any fool can write code that a
computer can understand.Good programmers write code that human canunderstand” M.Fowler
◉ Why ?◉ To add value and respond to change
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Software craftsmanship pillar
◉ Test Driven Development◉ Behavior Driven Development◉ Clean code / architecture◉ « Three amigos »◉ Continuous integration / testing◉ Testing and refactoring legacy code◉ …
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Software craftsmanship pillar
◉ Collaboration culture◉ Coding dojos◉ Hackathon / Coding games◉ Meetup / Fair / Conference◉ Blog◉ Community projects◉ …
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Have better code qualityCollaboration culture, reduce maintenance
costs, improve reusability
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DevOps pillar
◉ What is DevOps ?◉ DevOps is a culture, movement or practice that
emphasizes the collaboration and communication of both software developers and other information-technology (IT) professionals while automating the process of software delivery and infrastructure changes.
◉ Why ?◉ To increase effectiveness, reduce TTM and
implements continuous improvement
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DevOps pillar
◉ Dev / Ops collaboration◉ Infrastructure as Code◉ Automated deployment◉ Metrology◉ Release pipeline◉ Desired state◉ …
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One team, everything automatedContinuous improvement, faster time-to-
market, faster resolution of problems, more stable environment
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PlatformBacklog
groomingDevelopment
interfaceSource code management
Continuous integration Testing Libraries
repositoryDeployment automation
Metrology
Infrastructure as code
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400+ applications transformed
Reduce TTM from months to 2 weeks
Reduce deploy time from months to minutes
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What’s next ?4
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New challenges
◉ Resiliency◉ Scalability◉ Infrastructure hybridation◉ Multi-tenancy◉ Opensource culture◉ Service discovery◉ Secret management
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Cloud & PaaS program
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Platform
Metrology
Backlog grooming
Development interface
Source code management
Continuous integration Testing Libraries
repositoryDeployment automation
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Platform
RegistryDocker-swarm
The registratordiscovers newcontainers and feeds the registry
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Platform
Docker-swarm
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Service discovery
Registry
Service providerService consumer
1. Publish2. Find
3. Bind
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Service discovery
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Application K/V store
DEV STAGING PROD
K/V store K/V store
Update version
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Password generation
On demandcredentials
No longer needharcodedcredentials
1. Request credentials
2. Connect
3. Scale
4. Connect
Addcredentials
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Impersonification
I want totroubleshootproblems
Production
Works for SSH and DB !
1. Request credentials
2. Generate access
3. Login with generated credentials
Dev
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PKI : certificates generation
Host Host Host
Generatingon demandcertificatesfor containerscommunication
Request certificates
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Conclusion6
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Continuous delivery is now complete part of the bank
Huge change on the manner of working
Nearly everything is automated