This is a Lightning Talk exploring the value of bringing Serverless development to your operations and developer teams, and how it fits with DevOps culture. This talk will offer an introduction to Serverless applications, practical options for replacing infrastructure with Serverless, and will explore developer culture.

1. DevOps Philadelphia 6-20-2017
Embracing Serverless
Ops
Erica Windisch
CTO, Founder
IOpipe, Inc.

2. The AWS “Serverless Manifesto”
✤ Function are the unit of deployment and scaling.
✤ No machines, VMs, or containers visible in the programming
model.
✤ Permanent storage lives elsewhere.
✤ Scales per request; Users cannot over- or under-provision capacity.
✤ Never pay for idle (no cold servers/containers or their costs).
✤ Implicitly fault-tolerant because functions can run anywhere.
✤ BYOC - Bring Your Own Code.
✤ Metrics and logging are a universal right.

5. Perceptual DevOps Challenges

6. Serverful
Application
Design
Running on Elasticbeanstalk

7. Build APIs without code…
RESTful service
that puts data into
a Kinesis Stream

8. Serverless Cron
curl.js
var sprintf = require(‘sprintf’),
child_process = require('child_process')
exports.handler = function(input, ctx, cb) {
child_process.execFile("curl",
[‘-XGET', input.URL],
{
maxBuffer: 1024*1024*512
}, (err, stdout, stderr) => {
cb(err, stdout)
}
)
}
serverless.yml:
service: crontab
provider:
name: aws
runtime: nodejs6.10
functions:
curlGoogle:
handler: curl.handler
events:
- schedule: rate(daily)
input:
URL: https://www.google.com/
- schedule: rate(weekly) /* or cron *’s */
input:
URL: https://bing.com/

9. Reverse Proxy on AWS Lambda
handler.js:
‘use strict';
const http = require(‘http’), url = require('url')
const signRequest = (process.env.AWS_SIGN_REQUESTS) ?
require(‘aws4').sign : (requestOptions) => { return requestOptions }
const httpAgent = http.Agent({ keepAlive: true, keepAliveMsecs: 300000 })
module.exports.proxy = (event, context, callback) => {
var req = http.request(signRequest({
hostname: process.env.URL,
method: event.httpMethod,
headers: event.headers,
path: event.path,
agent: httpAgent,
timeout: 30 /* maximum time for api gateway invoked Lambda */
}))
var resBody = ""
res.on('data', (chunk) => { resBody += chunk })
.on('end', () => {
callback(null, {
statusCode: res.statusCode,
headers: res.headers,
body: resBody
})
})
};https://github.com/iopipe/awslambda-reverse-proxy
serverless.yml:
service: awslambda-rproxy
provider:
name: aws
runtime: nodejs6.10
region: us-west-1
plugins:
- serverless-plugin-iopipe
custom:
iopipeToken: ${file(./config.yml):IOPIPE_TOKEN}
functions:
proxy:
handler: handler.proxy
events:
- http:
path: /
method: any
environment:
URL: https://10.10.0.1/
AWS_SIGN_REQUESTS: true

10. Serverless Culture…
❖ Don’t build, when you can buy.
❖ Build as little as necessary.
❖ Build with the minimum operational complexity.
Maybe all you need are some circles

11. Erica Windisch
CTO & Founder IOpipe, Inc.
Former maintainer of Docker & OpenStack
Building cloud, ops, and infrastructure
tooling for over 15 years.
We’re HIRING!
Seeking a Senior Backend Engineer
Download this deck at https://www.slideshare.net/ewindisch/embracing-serverless-ops-lightning-talk