By Our Powers Combined: Observability for Developers

A presentation at Central Pennsylvania Open Source Conference in September 2019 in Lancaster, PA, USA by Aaron Aldrich

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BY OUR POWERS COMBINED: OBSERVABILITY FOR DEVELOPERS @CrayZeigh — #abstractionscon

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HI, ABSTRACTIONS!

! $ ” : theelasticast.com : @CrayZeigh : aaron.aldrich@elastic.co : noti.st/crayzeigh

!

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OBSERVABILITY @CrayZeigh — #abstractionscon

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DEVOPS @CrayZeigh — #abstractionscon

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DEVOPS @CrayZeigh — #abstractionscon

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@CrayZeigh — #abstractionscon

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@CrayZeigh — #abstractionscon

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DEVOPS > Wave 1: Ops learns code & automation 1 > Wave 2: Dev owns code through production 1 https://vimeo.com/341142053 @CrayZeigh — #abstractionscon

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*Simon Wardley: https://twitter.com/swardley/status/1014883354481741825?lang=en

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https://dev.to/molly_struve/making-on-call-not-suck-490

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SHARED LANGUAGE @CrayZeigh — #abstractionscon

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SHARED TOOLS @CrayZeigh — #abstractionscon

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SHARED SOURCE OF TRUTH @CrayZeigh — #abstractionscon

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OBSERVABILITY A system is observable when you can ask arbitrary questions about it and receive meaningful answers without having to resort to writing new code or command line tools. It lets you discover unknown-unknowns and debug in production. @CrayZeigh — #abstractionscon

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Isn’t it just Monitoring with better SEO? — You @CrayZeigh — #abstractionscon

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YOU’RE NOT WRONG.. @CrayZeigh — #abstractionscon

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@CrayZeigh — #abstractionscon

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@CrayZeigh — #abstractionscon

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Software is inherently opaque, we have to instrument it to output meaningful information @CrayZeigh — #abstractionscon

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THE THREE PILLARS OF OBSERVABILITY 1. Logs 2. Metrics 3. APM @CrayZeigh — #abstractionscon

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THE THREE PILLARS OF OBSERVABILITY 1. Logs Events 2. Metrics 3. APM @CrayZeigh — #abstractionscon

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THE THREE PILLARS OF OBSERVABILITY 1. Logs Events 2. Metrics 3. APM 4. Distributed Tracing @CrayZeigh — #abstractionscon

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THE THREE PILLARS OF OBSERVABILITY 1. Logs Events 2. Metrics 3. APM & Distributed Tracing 4. Distributed Tracing @CrayZeigh — #abstractionscon

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@CrayZeigh — #abstractionscon

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LOGS/METRICS/APM ARE THE MEDIA WE WORK IN @CrayZeigh — #abstractionscon

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METRICS @CrayZeigh — #abstractionscon

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@CrayZeigh — #abstractionscon

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EVENTS @CrayZeigh — #abstractionscon

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CARDINALITY & YOU @CrayZeigh — #abstractionscon

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EXISTING LOGS 66.249.65.159 - - [06/Nov/2014:19:10:38 +0600] “GET /news/53f8d72920ba2744fe873ebc.html HTTP/1.1” 404 177 “-” “Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version /6.0 Mobile/10A5376e Safari/8536.25 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)” 66.249.65.3 - - [06/Nov/2014:19:11:24 +0600] “GET /?q=%E0%A6%AB%E0%A6%BE%E0%A7%9F%E0%A6%BE%E0%A6%B0 HTTP/ 1.1” 200 4223 “-” “Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)” 66.249.65.62 - - [06/Nov/2014:19:12:14 +0600] “GET /?q=%E0%A6%A6%E0%A7%8B%E0%A7%9F%E0%A6%BE HTTP/1.1” 200 4356 “-” “Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)” @CrayZeigh — #abstractionscon

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STRUCTURED LOGGING { “@timestamp”: “2019-08-04T12:30:04.000Z”, … “container”: { “image.id”: “48f5af6667f3457be0a2c7814caefe21ed3c94fb94bd6243096b3a61ea502b1d”, “version”: “version”, }, “build.id”: “efdd0b5e69b0742fa5e5bad0771df4d1df2459d1” … “transaction”: “transaction_ID”, “user”: “importantPerson”, “account”: “0129”, “os”: “osx”, … “api_endpoint”: “endpoint”, … “response”: 400, … “message”: “Some informative thing, probably more human readable and friendly, but difficult to parse” } @CrayZeigh — #abstractionscon

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APM & TRACING @CrayZeigh — #abstractionscon

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@CrayZeigh — #abstractionscon

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@CrayZeigh — #abstractionscon

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@CrayZeigh — #abstractionscon

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SHARED LANGUAGE > Learning to speak Prod > Teaching Prod to speak Dev (Structured Logs; Traces) @CrayZeigh — #abstractionscon

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SHARED TOOLS > Debugging in Prod > Ops skills transferrable and replicable > New knowledge and methods shareable @CrayZeigh — #abstractionscon

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SHARED SOURCE OF TRUTH > Real production data > Draw better lines from code to prod > Write better, production ready code. @CrayZeigh — #abstractionscon

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WHERE DO WE GO FROM HERE? @CrayZeigh — #abstractionscon

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Testing & Experimentation @CrayZeigh — #abstractionscon

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TEST IN PRODUCTION @CrayZeigh — #abstractionscon

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@CrayZeigh — #abstractionscon

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FEATURE FLAGS ! https://martinfowler.com/articles/feature-toggles.html @CrayZeigh — #abstractionscon

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config.json { “featureFlags”: { “newThing”: true, } } app.js import { featureFlags } from “./config.json” if (featureFlags.newThing) { // do the new thing! } else { // do the old thing! } @CrayZeigh — #abstractionscon

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DON’T DEBATE EXPERIMENT @CrayZeigh — #abstractionscon

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2 Speaking of Testing : 2 QA https://theelasticast.com/episodes/0017-qa/ @CrayZeigh — #abstractionscon

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Chaos Engineering is about refining our mental models @CrayZeigh — #abstractionscon

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DEVOPS > Wave 1: Ops learns code & automation 1 > Wave 2: Dev owns code through production 1 https://vimeo.com/341142053 @CrayZeigh — #abstractionscon

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DEV OWNS CODE THROUGH PRODUCTION > Better, more production-ready code > Real World experimentation > Improved operational resiliency @CrayZeigh — #abstractionscon

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THE POWER IS YOURS

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THANKS! > Slides & References: noti.st/crayzeigh > Trial: ela.st/aaron-aldrich-trial > Come say, “Hi!” at the Elastic booth (31) @CrayZeigh — #abstractionscon