envoyproxy/envoy

Cluster healthcheck uses wrong interval due to metric filtering

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#8,771 创建于 2019年10月25日

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bughelp wanted

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描述

Given an Envoy v1.11.1 node with cluster metrics excluded via StatsMatcher and cluster health checking enabled, when sending traffic to the cluster healthcheck is always run with no_traffic_interval 60s default interval.

The cause is the same as with https://github.com/envoyproxy/envoy/issues/8473 and https://github.com/envoyproxy/envoy/issues/8630, metrics are being used for application functionality.

In this case upstream_cx_total is the metric on which the dependency exists. Therefore the workaround is to whitelist it:

stats_config:
 stats_matcher:
  inclusion_list:
    patterns:
    - suffix: upstream_cx_total

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