April 2018
Intermediate to advanced
468 pages
14h 34m
English
Content preview from Mastering Kubernetes - Second Edition
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The storage schema
The InfluxDB storage schema defines the information that Heapster stores in InfluxDB, and it is available for querying and graphing later. The metrics are divided into multiple categories, named measurements. You can treat and query each metric separately, or you can query a whole category as one measurement and receive the individual metrics as fields. The naming convention is <category>/<metrics name> (except for uptime, which has a single metric). If you have an SQL background, you can think of measurements as tables. Each metric is stored per container. Each metric is labeled with the following information:
- pod_id: A unique ID of a pod
- pod_name: A user-provided name of a pod
- pod_namespace: The namespace of a pod
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