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mtail
extract internal monitoring data from application logs for collection in a timeseries database
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
As far as getting legacy system data, anything I can do to get instrumentation in as quickly as possible. If I can add Prometheus libraries I will do that first. Then write exporters for systems that produce data that's reasonable. Lastly I will throw the logs at mtail.
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