英文:
How to view Cassandra number of read/write per seconds
问题
以前，我使用了 k8ssandra-operator 1.4 部署了 Cassandra，并启用了 kube-prometheus-stack，直接通过 CQL 将数据插入到 C* 节点。在 Web UI 上访问 Grafana 仪表板时，我可以看到 k8ssandra:read/write 的速率。
但在启用了 stargate 并将数据插入到 stargate 服务之后，我无法看到这些指标。我假设 Stargate 的工作方式是写入/刷新临时 SSTables，因此不会记录 k8ssandra:read/write 指标。
是否有任何方法可以查看这些指标，例如 nodetool？ prometheus？
解决方案
我按照 @Arron 的建议添加了以下配置，并且它起作用了，必须重新启动 stargate 和相关的 prometheus pods。
stargate:
enabled: true
replicas: 3
heapMB: 1024
cpuReqMillicores: 1000
cpuLimMillicores: 1000
telemetry:
prometheus:
enabled: true
英文:
Previously, I deployed Cassandra with k8ssandra-operator 1.4 with kube-prometheus-stack enabled, inserting data directly to C* node via CQL. I can see k8ssandra:read/write rates when access Grafana dashboard on Web UI.
But after enabling stargate, and inserting to stargate service, I can't see those metrics. I assumed the way Stargate work is to write/flush temporary SSTables so k8ssandra:read/write metrics are not logged.
Is there any way to see those metrics, nodetool? prometheus?
Solutions
I added these config follow @Arron answer and it worked, have to restart stargate and related prometheus pods.
stargate:
enabled: true
replicas: 3
heapMB: 1024
cpuReqMillicores: 1000
cpuLimMillicores: 1000
telemetry:
prometheus:
enabled: true
答案1
得分: 1
与K8ssandra团队讨论了这个问题。尝试启用Stargate的Prometheus遥测：
Stargate.spec.telemetry.prometheus
↩ 父级
名称 类型 描述
enabled 布尔值 启用此资源（Cassandra或Stargate）的Prometheus serviceMonitors的创建。
这应该允许这些指标通过。
英文:
Talked to the K8ssandra team on this one. Try enabling Prometheus telemetry for Stargate:
Stargate.spec.telemetry.prometheus
↩ Parent
Name Type Description
enabled boolean Enable the creation of Prometheus serviceMonitors for this resource (Cassandra or Stargate).
This should allow those metrics to come through.
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