Kuma 0.4 发布了，基于opentracing 以及promethues ，我们可以更好的观测系统的指标了 同时grafana dashboard也已经到grafana 的marketplace 了
https://konghq.com/blog/kuma-0-4-released-with-l7-tracing-grafana-dashboards https://github.com/Kong/kuma/blob/master/CHANGELOG.md#040