Currently an early proof-of-concept.
A HTTP proxy that supports a subset of the Prometheus API, accepting PromQL queries and answering them with data pulled from OpenTSDB.
- Go 1.8
- OpenTSDB 2.3+ (earlier versions could potentially be supported)
go install github.com/mattbostock/opentsdb-promql-frontend
ADDR=localhost:9080 OPENTSDB_URL=http://localhost:4242 opentsdb-promql-frontend
Next, add a Prometheus datasource to Grafana and use the URL specified by the ADDR environment variable.
You should be able to use PromQL to query your OpenTSDB data.
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You can query your OpenTSDB metrics in Grafana by pointing the Prometheus datasource at this proxy.
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Aggregations and arithmetric.
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PromQL has tighter restrictions on how metrics can be named, so if you want to query metrics from OpenTSDB such as
foo.bar.baz, you'll need to query it using{__name__="foo.bar.baz"}. This restriction is probably solvable. -
All queries must include a metric name - queries such as
{foo="bar"}are not supported. -
There are no tests yet.
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Querying for a list of all metric names is not yet implemented.
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The Prometheus Remote Read API (unreleased at the time of writing) is not yet supported.
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It's all very experimental - we're using the Prometheus dev-2.0 branch.