cassandra-exporter
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Java agent for exporting Cassandra metrics to Prometheus
`blocked_tasks` is a gauge, `blocked_tasks_total` is a counter. Cassandra (3.11.x), increments both when something is blocked: ``` metrics.totalBlocked.inc(); metrics.currentBlocked.inc(); s.awaitUninterruptibly(); metrics.currentBlocked.dec(); ``` `blocked_tasks_total` is more useful, since `blocked_tasks` may change/reset...
Need to confirm this is desired behaviour. On a test cluster, the following labels are present: ``` {consistency="LOCAL_QUORUM",operation="write"} | 0 {consistency="TWO",operation="write"} | 0 {consistency="EACH_QUORUM",operation="read"} | 0 {consistency="LOCAL_SERIAL",operation="read"} | 0 {operation="viewwrite"}...
Histograms are exposing only the percentiles, min/max/mean/stddev are missing, and there are situations when these are needed. Example: SSTablesPerReadHistogram. I like to see the average of it, but P50 is...
We would like to implement this on our systems, but we are currently running 2.2.5. We will be looking at moving to either 2.2.11 or 2.2.13 very shortly. Seeing support...
The README/wiki should contain some real-world example queries that show off the exporter.
Would be nice to get a count of messages at each logging level as a metric. See https://metrics.dropwizard.io/3.1.0/manual/logback/ as an example.
Implement a basic webapp that consumes the JSON output and displays: - Metirc families - Name - Type - Help - Metrics per family - Labels - Value - _maybe_...
We are running Apache Cassandra 4.0.10 using Java 11.0.19.7.1, Cassandra exporter (both 0.9.12 and 0.9.13 versions) reports the following warning during every startup: ~$ WARNING: An illegal reflective access operation...
Despite trying various combination of cassandra-exporter arround the web I still got following exceptions: (0.9.14) ````` Feb 25 14:59:16 ip-10-0-5-136.eu-west-1.compute.internal cassandra[27283]: [cassandra-exporter-harvester-defer-0] WARN com.zegelin.cassandra.exporter.Harvester - Failed to register collector for...
These metrics are missing https://cassandra.apache.org/doc/stable/cassandra/operating/metrics.html#handoff-metrics https://cassandra.apache.org/doc/stable/cassandra/operating/metrics.html#hintsservice-metrics Can these be added?
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Java agent for exporting Cassandra metrics to Prometheus