Observability Flashcards
What is observability?
ability to analyze and view data or process
achieved only after monitoring data (such as metrics) has been compiled
often, confused with monitoring
Monitoring
pipeline/products must be able to be monitored to have observability
Feedback (analysis)
is necessary for the CI/CD process
Value of monitoring
Customer experience performance and cost trends troubleshooting and remediation learning and improvement
Evolve monitoring process
user experience
short-lived resources
more devices generating more data
faster release velocity
The Golden Triangle of Observability
Monitoring (Metrics) - CloudWatch metrics
Logging - CloudWatch Logs
Tracing - AWS X-Ray traces
CloudWatch Logs
to monitor, store, and access your log files from an EC2 instance, AWS CloudTrail, and other sources
Retrieve log data:
CloudWatch Logs
to monitor, store, and access your log files from an EC2 instance, AWS CloudTrail, and other sources
Retrieve log data:
Terminology:
- log event
- log stream
- log group
log event
A record of some activity recorded by the application or resource being monitored. Contains two properties: timestamp and raw event message.
log stream
A sequence of log events from the same application instance or resource. Log streams with no log data two months after creation are automatically deleted.
log group
A collection of log streams that share the same retention, monitoring, and access control settings. Every log stream must belong to a single log group.
CloudWatch Logs Insights
Fully integrated, interactive, and pay-as-you-go log analytics
AWS X-Ray
Analyze and debug production distributed applications
AWS X-Ray concepts
Trace:
Segment:
Sub-Segment:
AWS App Mesh
a service mesh that provides application-level networking to make it easy for your services to communicate with each other across multiple types of compute infrastructure.
