Creating a cloud-native dev environment

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CREATING A CLOUD-NATIVE DEV ENVIRONMENT ANTONIS KALIPETIS - @AKALIPETIS

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ANTONIS KALIPETIS @AKALIPETIS ▸ Docker Captain and early user ▸ Python lover and developer ▸ Technology lead at SourceLair / stolos.io I love automating stuff and sharing knowledge around all things containers, DevOps and optimizing developer workﬂows.

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CREATING A CLOUD-NATIVE DEV ENVIRONMENT AGENDA ▸ Current state in dev-environments ▸ 12-factor apps - what do they require ▸ Staging environments the good, the bad and the ugly ▸ Entering the ‘ cloud ▸ Our take in dev-environments - demo time!

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CURRENT STATE IN DEV-ENVIRONMENTS

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DEV THE PROBLEM CI PROD

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DEV THE DEVOPS SOLUTION PROD CI

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THE ACTUAL SOLUTION PROD CI DEV

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CURRENT STATE IN DEV-ENVIRONMENTS ▸ We use our local machine ▸ Almost certainly miss-conﬁgured ▸ We use a virtual machine ▸ Do you really deploy in a single machine? ▸ We test some part of our infrastructure ▸ Mocking is great, but how do you make good end to end testing while developing?

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CURRENT STATE IN DEV-ENVIRONMENTS THE TOOLS ▸ Vagrant ▸ Create a well-conﬁgured VM ▸ Docker ▸ Make sure you develop in the correct runtime ▸ Docker Compose ▸ Make sure you develop in the correct stack

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PROBLEM SOLVED RIGHT?

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ENTER 12-FACTOR APPS

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THE 12-FACTOR APP IS A METHODOLOGY FOR BUILDING SOFTWARE-AS-A-SERVICE APPS THAT ▸ Use declarative formats for setup automation, to minimize time and cost for new developers joining the project; ▸ Have a clean contract with the underlying operating system, offering maximum portability between execution environments; ▸ Are suitable for deployment on modern cloud platforms, obviating the need for servers and systems administration; ▸ Minimize divergence between development and production, enabling continuous deployment for maximum agility; ▸ And can scale up without signiﬁcant changes to tooling, architecture, or development practices. https://12factor.net/

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CURRENT STATE IN DEV-ENVIRONMENTS THE DARK SIDE OF THE MOON ▸ Is setting up dev environments quick and easy? ▸ How much time do you need? Can you easily create a second environment? ▸ What’s the divergence between your dev environment and production ▸ How many backing services you mock or don’t run at all? ▸ Is your developer environment disposable? ▸ How happy are you to just completely delete it?

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LET’S CREATE A GAZILLION STAGINGS

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STAGING IS GREAT, BUT ▸ It costs time and money to maintain ▸ It’s either incomplete ▸ …or is costs more time and money to maintain ▸ You get easily locked out ▸ …or you need more staging environments

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DEAL WITH IT STAGING IS GOOD ONLY FOR A FINAL CHECK, LOAD TESTING, AN INTERNAL VERSION OF THE SERVICE

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CLOUD-NATIVE DEV ENVIRONMENTS

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MANAGED EASY TO REPLICATE AND REPRODUCE

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SHARED CLUSTER EASY TO SHARE RESOURCES, SERVICES FAST TO FETCH DATA

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ACCESSIBLE NO NEED FOR A SPECIFIC MACHINE WORK EASILY FROM ANYWHERE

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THE CHALLENGES

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THE CHALLENGES ▸ How you give easy access to these environments? ▸ There should be no complication on accessing these environments ▸ You still need to code using your local tools ▸ Each developer has her unique needs and wants ▸ There needs to be an ofﬂine fallback ▸ Feeling bound to an Internet connection produces insecurity