I developed this cheatsheet because I love using Docker, your mileage will vary. I got a lot of value from this paid Docker course published on Udemy. Midway through, I realized that it was relatively easy to containerize the entire blog, and so here goes. Registries Pull alpine off Docker Hub: $ docker pull alpine:latest latest: Pulling from library/alpine Digest: sha256:46e71df1e5191ab8b8034c5189e325258ec44ea739bba1e5645cff83c9048ff1 Status: Downloaded newer image for alpine:latest Search Quay for alpine:

Completed this one on a wintry Sydney morning. Despite a lack of sleep, I felt much better prepared vs. DevOps Pro, and it showed in the grade, too: Overall Score: 75% Topic Level Scoring High Availability and Business Continuity: 72% Costing: 75% Deployment Management: 57% Network Design: 42% Data Storage: 72% Security: 85% Scalability & Elasticity: 90% Cloud Migration & Hybrid Architecture: 85% Scratchpad ASG; CloudFormation, using YAML/JSON for solution architecture: Which Services are supported?

So I covered my eyes for a bit when I clicked ‘Finish’ (the test attempt), as this was the toughest exam I’d faced thus far, and I was maybe 70% satisfied with my body of work. Fortuitously, I passed, albeit with an overall score of 65%:- Topic Level Scoring Continuous Delivery and Process Automation: 47% Monitoring, Metrics, and Logging: 93% Security, Governance, and Validation: 75% High Availability and Elasticity: 83% I really need to backtrack, figure out this CI/CD thing, then.

Hello, world. Penned down some keywords after passing my recent AWS SOA exam, and then expanded on ’em below. Perhaps you’ll find ’em useful then. EBS RAID 0 (striped) vs. 1 (mirrored); i.e., the lower the number, the higher the risk, see https://www.diffen.com/difference/RAID_0_vs_RAID_1. Just like EC2 instances, EBS volumes reside in a specific AZ of a Region; i.e., they can only be attached to a running instances within the same AZ.

I recently became fully AWS certified (at the Associate Level), most recently passing the the SysOps Administrator - Associate exam at my third attempt. In late 2016, I failed with a score of 61% (or 67%). It was my first failure – I deleted the “unsuccessful” notification email in a fit of rage; In early 2018, I failed with a score of 71%; In April 2018, I passed with a score of 80%.

After an extended hiatus away from AWS certification, finally I’m certified at the Associate level, 3 times over! To date I’ve taken and passed: Certified Developer - Associate Certified Solutions Architect - Associate Certified SysOps Administrator - Associate AWS has a nice road map, so I just re-purposed the following image off their site: I’m told that the Professional level exams are much harder, but that’s a post for another day…