hanahmily commented on a change in pull request #5046:
URL: https://github.com/apache/skywalking/pull/5046#discussion_r451959802
##########
File path: docs/en/setup/backend/backend-health-check.md
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@@ -0,0 +1,62 @@
+# Health Check
+
+Health check intends to provide a unique approach to check the healthy status
of OAP server. It includes the health status
+of modules, GraphQL and gRPC services readiness.
+
+## Health Checker Module.
+
+Health Checker module could solute how to observe the health status of
modules. We can active it by below:
+```yaml
+health-checker:
+ selector: ${SW_HEALTH_CHECKER:default}
+ default:
+ checkIntervalSeconds: ${SW_HEALTH_CHECKER_INTERVAL_SECONDS:5}
+```
+Notice, we should enable `prometheus` telemetry at the same time.
Review comment:
done
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