Alibaba ACA Cloud Operator case studies
Alibaba ACA Cloud Operator · Put your knowledge to work in context.
The ACA Cloud Operator credential is an Alibaba Cloud associate-level certification aimed at practitioners who run day-to-day cloud environments rather than design them. It suits cloud operations engineers, system administrators, NOC/SOC staff, and DevOps or platform team members who are expected to provision, monitor, secure, and keep cloud workloads cost-efficient. The Alibaba ACA Cloud Operator case studies are 5 cases and about 1,753 words.
1ECS Auto Scaling Under Bursty Traffic
Your web tier runs on 12 ECS instances behind an SLB. CPU averages 35% but spikes to 90% for 3-4 minutes every hour when a batch job hits the API.
372 words, about 2 min2OSS Bucket Exposure and Access Logging Gap
A security review finds an OSS bucket holding customer invoices is set to public-read. Access logs show 40,000 GET requests from 15 unfamiliar IP ranges over the past week.
362 words, about 2 min3VPC Peering vs. Transit for a Growing Network
You have 4 VPCs in one region: prod (10.0.0.0/16), staging (10.1.0.0/16), shared-services (10.2.0.0/16), and a new analytics VPC (10.3.0.0/16). Today prod and staging each peer with shared-services.
338 words, about 2 min4CloudMonitor Alarm Fatigue on a Database Tier
Your RDS instance and 8 ECS app servers generate CloudMonitor alarms. Over two weeks the on-call rotation received 340 alerts: 210 were CPU 80% on app servers lasting under 2 minutes and self-resolving, 90 were memory 85% on the same servers, and 40 were genuine RDS connection-count alarms.
344 words, about 2 min5Cost Spike from Orphaned and Oversized Resources
Monthly bill jumped 38% quarter-over-quarter with no traffic growth. Investigation shows: 22 ECS instances tagged env=dev running 24/7, 14 unattached cloud disks from deleted instances, 6 EIPs not bound to any instance, an OSS bucket with 40 TB of logs never lifecycle-expired, and 30% of prod instances are 8 vCPU where CloudMonitor shows peak CPU of 8%.
337 words, about 2 min