wu-sheng commented on a change in pull request #25:
URL: https://github.com/apache/skywalking-swck/pull/25#discussion_r600498236
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File path: docs/custom-metrics-adapter.md
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@@ -51,13 +52,31 @@ External metrics allow you to autoscale your cluster based
on any metric availab
```
* metric_name: The name of metric generated by OAL or other subsystem.
- * label: `label_key` is from the arguments of swctl .
+ * label: `label_key` is the entity name of skywalking metrics. if the label
value contains special characters more than
+ `.`, `-` and `_`, `service.str.<number>` represent the literal of label
value, and `service.byte.<number>` could
+ encode these special characters to hex bytes.
+
+Supposing the service name is `v1|productpage|bookinfo|demo`, the
`matchLabels` should be like the below piece:
+
+```yaml
+matchLabels:
+ "service.str.0": "v1"
+ "service.byte.1": "7c" // the hex byte of "|"
Review comment:
Interesting.
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