Raise the bar!
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Transcript of Raise the bar!
Raise the Bar!
Alessandro Franceschi @alvagante
github.com/example42
OSS4B 2013
A journey towardsinfrastructure automation
they tell usinfrastructures are
like this...Automated Systems Provisioning
Centrally Managed and ConfiguredMassively Continuos Deployments
Predictive Data AnalysisGroundbreaking Monitoring Visualization
Auto Scaling in Multiple DataCentersVirtualized and Cloudified(Chaos) monkeys driven
but our infrastructureis more like this...
Semi automatic systems provisioningAn hell of old, not updated, heterogenous OS
Configurations managed by hand or scripts Deployments are a continuous warfare
We collect logs you don't checkMonitoring is a **** to maintain
More or less fully VirtualizedSome Cloud experiments
Self Destroying (no need of monkeys)
What can we do?
Hold on.Where are we?
Look around.Choose a path.
Move. Step by step.
Where are we?
Where things fail?Where time is wasted?What works?What's criticalWhat's strategical?What are the available skills?
Learn from failure, andlearn from success.
Choose a Path
Analyze and discuss solutionsShare vision and goalsDraw a general roadmapBe ready for corrections
Choose the tool:Puppet, Chef, CFEngine...
No tool?No automation, no reason to talk here
Step by Step
Train the teamGet help from expertsDo or Know It YourselfUse public code, when possibleCommunicate, always
Step the dots, then connect them
Test, act, verify.Reiterate.
Scenarios
Brand new project:New systems, new infrastructure, no legacy.
Infrastructure migration:New systems to replace existing ones, some legacies.
Infrastructure update: Automation on existing systems.
Brand New Project
Easier and most liked solutionMore freedom on technological choicesBrand new OS and stacks, possibly homogenousClean setups from scratchSound design from the foundationsNo mess with current productionFaster and smoother deployment times
Infrastructure Migration
Existing systems still not centrally managedMigration of existing stacks to new systemsAll new nodes should be fully managed
Define a standard baselineCreate the stacks / roles you need
Enlarge coverage of application stacksStart from what is more used and needed
Migration evaluations
How easily and quickly can be doneHow stable are systemsWhat maintenance efforts they requireNumber of nodes involvedMigration risks and impactWhat's worth to automateFuture benefits
Infrastructure update
Harder and more dangerousProbably different OS to manageUndetermined existing setup proceduresManual configurations accumulated over time
Evaluate agent setup on older systems Evalutate effort and benefits, for edge cases
Evaluate the migration alternative for common cases
Infrastructure update
We need a gradual approachDefine a minimal baseline to apply to all nodesBe careful of OS variations
Raise the Bar, step by step:Vertically: adding services to the minimal baseline Horizontally: covering more OS and adding nodes
Priorities
Automate servers deployment (*)Automate common systems configurations (*)Automate your most important stacks (*) Refine testing and apps deploy, then automate (*)Automate or delegate monitoringIntegrate what already works well
(*) Time spent here is rarely wasted.
Configurations Rollout
Notify users of the ongoing changesHave a test environmentTest effects on any single different OSPropagate the configurationsWatch logs and reports
Don't be surprised of skeletonsReview and patch uncovered configurations
Mind-set change
When infrastructure is code:- you need to version it- you can test it- you use it (as many times as necessary)- you refine it over time- you, sysadm, are a developer
and you don't mess up with the runtime.
Raise higher the bar
Useful Monitoring/Logging
Visualization and correlation of infrastructure data
Continuos delivery as frequent as you need
Improved stability, scalability, redundancy
... whatever makes your infrastructures smarter
Now, RUN!
Automation means:- repeatability- consistency- scaling- reduced human errors- velocity
- more time to do interesting things
smallsteps
and a vision
Thank you,@alvagante