Cloud Logging

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Allows you to store, search, analyze, monitor, and alert on log data and events from Google Cloud and AWS.
Logging includes storage for logs, a user interface called Logs Explorer, and an API to manage logs programmatically.
can also be used in realtime using streaming like dataflow
Types of logs:
- Platform log: Gcloud services
- Component log: like platform log but generated by cloud-provided software components like GCE instances log
- Security log: who did what where and when
- User-written log: written by custom applications and services by API or client sdk
  - GKE, Run, Functions: log written to stdout and stderr are saved automatically
  - GCE: Install Ops Agent on VM
- Multi/hybrid cloud log

Query builder:
- Uses Logging Query Language
- Quickly filter using resource type, logName, severity
Make uses of the LHS log fields

Derive data from content of log entries
2 types:
- System-defined log-based metrics:
  - Calculated only from logs that have been ingested by Cloud Logging
  - Can be: counter, distribution
  - At project level
- User-defined log-based metrics:
  - Created by admin to track things
  - Can be: counter, distribution and boolean
  - can be project or bucket level
Labels are used for grouping and filtering with filed name
- Allows for one time-series but multiple lines for each label
- Can use extraction regular expression to extracts label value from field value
  - leave empty for the entire content of the field

StrixTheKiet Notes