AWS Solutions Architect Professional (SAP) study notes

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?

AWS DevOps Pro study notes

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.

AWS SysOps Administrator (SOA) study notes

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 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.

Analysis of the AWS Certified SysOps Administrator - Associate exam

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%.

AWS Certified Associate

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…

Docker containers can't resolve DNS

I’ve recently switched over to using Docker for dev work on a Windows 10 host, and it’s worked pretty well. Today, apt-get somehow stopped working; e.g., ...RUN apt-get update && apt-get install... ---> Running in ... Err:1 xenial-security InRelease Temporary failure resolving '' Err:2 xenial InRelease Temporary failure resolving '' Err:3 xenial-updates InRelease Temporary failure resolving '' Err:4 xenial-backports InRelease Temporary failure resolving '' Reading package lists.