Elastic Certified Observability Engineer case studies
Elastic Certified Observability Engineer · Put your knowledge to work in context.
The Elastic Certified Observability Engineer credential is intended to validate hands-on skill with Elastic Observability: ingesting telemetry, searching and analyzing logs, monitoring infrastructure and metrics with Elastic Agent, and working with APM traces and digital experience monitoring. This page is an independent study resource. The Elastic Certified Observability Engineer case studies are 5 cases and about 3,833 words.
1Firewall dataset rejects four percent of events after a parser change
A platform team runs one Fleet deployment for 1,400 Elastic Agents writing to the logs- data stream family. Three custom integrations share the logs namespace: logs-nginx.access-default, logs-pfsense.log-default and logs-checkout.json-default.
804 words, about 4 min2ILM rollover stuck for six weeks on a 2 TB per day log index
An observability team manages a 14-node cluster (10 hot, 4 warm) for application logs from 600 Kubernetes pods. Logs are written to the alias app-logs-write, which points to a single index app-logs-prod-000001 with 12 primaries and 1 replica.
771 words, about 4 min3Per-core and per-container metrics overload a 450-host Agent fleet
An SRE team monitors 450 Linux hosts with Fleet-managed Elastic Agent 8.x. Each host runs the System integration, the Docker integration and a custom Prometheus scrape integration.
734 words, about 4 min4Tail sampling and a broken Kafka trace between checkout and inventory
Checkout is a Java Spring Boot service on three Kubernetes pods calling a Node.js cart service and publishing to Kafka; a Python inventory worker consumes the topic. All services use Elastic APM agents 8.x and report to a Fleet-managed APM Server.
763 words, about 4 min5RUM vanishes after a CSP change while a browser monitor fails at MFA
An e-commerce team deploys a React single-page app that calls APIs on api.example.com. The Elastic RUM agent is configured with serviceName storefront-rum and serverUrl https://apm.example.com.
761 words, about 4 min