Flying v. Driving: Myths, fears, and opportunity when going serverless

Going serverless is a lot like deciding to fly instead of driving. Flying is routinely safer than driving to your destination but requires a high level of trust in your airline and many are still scared. We’ll explore going serverless by confronting fears and examining it’s new issues.

DevOpsDays denver 2018: https://youtu.be/I1dqiokgPfw

Transcript

1. @tmclaughbos SERVERLESSOPS MYTHS, FEARS, AND OPPORTUNITY WHEN GOING SERVERLESS FLYING V. DRIVING
2. HOW DID THIS TALK COME ABOUT?
3. LET’S PLAN MY TRIP TO DENVER
4. LET’S PLAN MY TRIP TO DENVER SEATTLE
6. ACCIDENTS & FAILURE
7. SERVERLESSOPS @tmclaughbos TRAVEL ACCIDENTS & FAILURE
8. SERVERLESSOPS @tmclaughbos CLOUD ACCIDENTS & FAILURE
9. @tmclaughbos SERVERLESSOPS THIS ISSUES I WORRY ABOUT WITH SERVERS ▸ Are we under or over sized? ▸ Do we have enough CPU, RAM, disk? ▸ Is every necessary service on the host running? ▸ Are we all up to date with OS patching? ▸ Is this sysctl or config value set? ▸ Are we on the right version? I think that was fixed two releases ago.
10. @tmclaughbos SERVERLESSOPS THIS ISSUES I WORRY ABOUT WITH SERVERLESS ▸ Is the application responsive? ▸ Are application requests returned in a timely manner? ▸ What do application error rates look like? ▸ How do we handle application traffic spikes? ▸ How complex of a system have we built?
11. @tmclaughbos SERVERLESSOPS ACCIDENTS AND FAILURE WHEN SERVERLESS ▸ AWS is probably better at the low-level undifferentiated work than you. ▸ Less control also means less things you can break. ▸ This frees you to worry about issues higher up the stack.
12. COST
13. @tmclaughbos SERVERLESSOPS LAMBDA VS. EC2 COSTS (THAT WE TELL OURSELVES) ‣ Instance: 1 x t2.nano Total: $4.25/month ‣ Requests: 2,678,400 (1rps) ‣ Duration: 100ms ‣ Memory: 128MB Total: $0.55/month
14. SERVERLESSOPS @tmclaughbos HERE’S MY FLIGHT OPTIONS… THEY’RE EXPENSIVE
15. @tmclaughbos SERVERLESSOPS TRAVEL BY CAR ((3000 miles / 26mpg) * $3.00/gal) * 2 Total: $692 round trip
16. @tmclaughbos SERVERLESSOPS TRAVEL BY CAR ((3000 miles / 36mpg) * $2.66/gal) * 2 Total: $443 round trip
17. @tmclaughbos SERVERLESSOPS FLIGHT V. DRIVING TO DENVER ((2000 miles / 36mpg) * $2.66/gal) * 2 Total: $296 round trip
18. AWS SAYS COMPANY XYZ SAVED 84% BY MOVING TO AWS LAMBDA… https://aws.amazon.com/solutions/case-studies/bustle/
20. @tmclaughbos SERVERLESSOPS ACTUAL TRAVEL COSTS ‣ Ticket: $385 ‣ Lyft: ‣ Airport <—> Home: $10 x 2 ‣ Airport <—> Hotel: $29 x 2 Total: $463 ‣ Gas: $443 ‣ Hotel: $152 (Cleveland: $43 + Minneapolis: $50 + Billings: $59) ‣ Meals ‣ Breakfast: $22.50 ($7.50 *3) ‣ Lunch: $30 ($7.50 * 4) ‣ Dinner: $22.50 ($7.50 * 3) ‣ Coffee: $30 ($3.75 * 8) Total: $700
21. @tmclaughbos SERVERLESSOPS LAMBDA VS. EC2 COSTS (ACTUAL) ‣ Instance: 2 x m4.large ($146.40) ‣ SaaS services: ‣ Logging: $20 ($10 * 2) ‣ Security: $20 ($10 * 2) Total: $186.40/month ‣ Invocations: 2,678,400 ($0.557 - 1rps) ‣ Duration: 100ms ‣ Memory: 128MB ‣ Requests: 2,678,400 ($0.535) Total: $1.09/month
22. @tmclaughbos SERVERLESSOPS LAMBDA VS. EC2 COSTS (ACTUAL) ‣ Instance: 2 x m4.large ($146.40) ‣ SaaS services: ‣ Logging: $20 ($10 * 2) ‣ Security: $20 ($10 * 2) Total: $186.40/month ‣ Invocations: 267,840,000 ($55.71 - 100rps) ‣ Duration: 100ms ‣ Memory: 128MB ‣ Requests: 267,840,000 ($53.56) Total: $109.27/month
23. @tmclaughbos SERVERLESSOPS LAMBDA VS. EC2 COSTS (ACTUAL) ‣ Instance: 2 x m4.large ($146.40) ‣ SaaS services: ‣ Logging: $20 ($10 * 2) ‣ Security: $20 ($10 * 2) Total: $186.40/month ‣ Invocations: 267,840,000 ($223.38 - 100rps) ‣ Duration: 200ms ‣ Memory: 256MB ‣ Requests: 267,840,000 ($53.56) Total: $276.93/month
24. @tmclaughbos SERVERLESSOPS BOTH OF THESE CAN BE TRUE ‣ “Lambda costs ~2X versus running a service on EC2.” ‣ “Lambda saved us 85% on our bill.”
25. THE RIDE ITSELF
26. @tmclaughbos SERVERLESSOPS THINGS YOU CAN DO WHILE DRIVING ▸ Drive
27. @tmclaughbos SERVERLESSOPS THINGS YOU CAN DO WHILE FLYING ▸ Read ▸ Watch movies ▸ Deliver Twitter hottakes ▸ Email ▸ Code ▸ Write blog post ▸ Write a conference presentation
28. I WANT THE FOCUS OF MY TRIP TO BE MY DESTINATION, NOT HOW I GOT THERE.
29. SERVERLESSOPS @TMCLAUGHBOS WHAT I DO WITH SERVERS ‣ Managing a host deployment system ‣ Managing an app deployment system ‣ Config management ‣ Monitoring host state & metrics ‣ Monitoring app state & metrics ‣ Patching hosts ‣ Monitoring who logged in ‣ Scaling services
30. SERVERLESSOPS @TMCLAUGHBOS WHAT I DO WITH SERVERLESS ‣ Managing a host deployment system ‣ Managing an app deployment system ‣ Config management ‣ Monitoring host state & metrics ‣ Monitoring app state & metrics ‣ Patching hosts apps ‣ Monitoring who logged in resource access ‣ Scaling services systems
31. SERVERLESSOPS @tmclaughbos WHAT I WANT TO START MONITORING
32. SERVERLESSOPS @tmclaughbos WHAT I USED TO FOCUS ON VERSUS WHAT I WANT TO FOCUS ON
33. (THIS SLIDE LEFT BLANK)
34. THANK YOU @tmclaughbos SERVERLESSOPS HTTPS://WWW.SERVERLESSOPS.IO