describe a time you debugged a production outage First off; I don't remember at all. It must be ten years ago Second; Due to that I've learnt not to have outages in production. More on reddit.com

Ok, I'll be honest, some of these are great questions but a lot of them are just insane. This is more like a certification exam than an interview. This is complete overkill for like 99.9% of devops positions. That being said, it does accomplish exactly what you probably want bc if I was ever in an interview and someone asked me some of these questions, I would just politely decline the position and save us all some time. More on reddit.com

I’d ask for context and requirements: internal product or client facing? deadlines or budgets? how many users, requests per day, peak requests? lifecycle requirements, data retention policies? security requirements? is this a one-off PoC or a production project that needs to be maintained? (Who will be maintaining it?) how do we deploy and do ci/cd? And so on; the particular tech to do it doesn’t matter as much as all requirements and content. More on reddit.com

Edited for Grammar / Clarity Not sure about sources, but I recently gave a few on another post on this subreddit a few moments ago: -- Create Infrastructure that would support a 3 Tier Architecture -- LB/Compute/DB -- how many VPCs would you setup? How many Subnets? How are your NACLs & SGs created for Least-Privilege? What would your Route Tables look like? When would you use a NAT, when would use a IGW? How would you make it a Hybrid architecture / account for Bastion Hosts (aka Jump Boxes, if you're weird) -- What Load Balancing services would you use for that 3 Tier Architecture? Can you speak through the difference between Layer 4 and Layer 7 Load Balancing? How would you do it in ELB, how would you do it via Nginx or HAProxy? -- What will you use for your Compute layer? Can you setup an ASG & EC2 Fleet to point your ELB at? Can you talk through different scaling events, cooldowns and/or grace? How will they communicate with the DB Layer? What instance sizes would you provision to start with? -- What will you do for your DB Layer? Can you talk through RDBMS vs NoSQL? OLAP vs OLTP? Would you use a managed solution or spin up your own on EC2? -- How will you monitoring this infrastructure? What services would you use and do you know how to set them up? Can you read Flow Logs to figure out if someone is trying to run recon, versus a user who cannot get in? How would you roll up all of the different data sources? -- How would you secure this? What SG / NACL rules would be too permissive, or not enough? How would you handle Global Access? What services can you leverage to protect it? Would you use Native Tools, 3rd Party or a Combination? -- How will you scale / alleviate load on your 3-Tier? When would you Horiz. Scale versus Vert. Scale, and why? When would you use Read Replicas or maybe Elasticache? Can you talk through Caching, Sharding, Redis v Memcached? These are some I have been asked during interviews / have asked potential candidates. Hope that helps. More on reddit.com