nanog mailing list archives
Re: Service Provider NetFlow Collectors
From: Tim Raphael <raphael.timothy () gmail com>
Date: Wed, 2 Jan 2019 20:48:32 +0800
This is correct, With a flow database you want to be able to say: “show me all HTTP traffic from subnet a.b.c.0/24” which requires you to either keep individual IPs or aggregate subnets. Combined with port and protocol data for both source and destination, the series count shoots way above 10M. - Tim
On 2 Jan 2019, at 20:20, Saku Ytti <saku () ytti fi> wrote: Hey Tim,I would advise against InfluxDB in this case - flow data has a very high (and open) tag cardinality which is not suited to Influx (although their recently new index format has improved this).I'm not entirely sure I understand. Does this mean the permutations of tags are high, i.e. series count is high? If so, isn't this general problem and advice against all TSDBs? If so, I fully agree, you couldn't/shouldn't make for example IP addresses your tags, potentially creating 2**32*2 series without any other tags, it's rather non-sensical proposal in TSDB. Influx themselves comment that >10M series is likely infeasible. So you need unique tag combinations to be low millions at most. -- ++ytti
Current thread:
- Re: Service Provider NetFlow Collectors H I Baysal (Jan 02)
- Re: Service Provider NetFlow Collectors Tim Raphael (Jan 02)
- Re: Service Provider NetFlow Collectors Saku Ytti (Jan 02)
- Re: Service Provider NetFlow Collectors Tim Raphael (Jan 02)
- Re: Service Provider NetFlow Collectors H I Baysal (Jan 02)
- Re: Service Provider NetFlow Collectors Saku Ytti (Jan 02)
- Re: Service Provider NetFlow Collectors H I Baysal (Jan 02)
- Re: Service Provider NetFlow Collectors Tim Raphael (Jan 02)
- Re: Service Provider NetFlow Collectors Saku Ytti (Jan 02)
- Re: Service Provider NetFlow Collectors Tim Raphael (Jan 02)
- <Possible follow-ups>
- RE: Service Provider NetFlow Collectors Phil Lavin (Jan 02)
- Re: Service Provider NetFlow Collectors Daniel Rohan (Jan 02)
- Re: Service Provider NetFlow Collectors Nick Peelman (Jan 02)
- Re: Service Provider NetFlow Collectors Mark Tinka (Jan 15)
- Re: Service Provider NetFlow Collectors Aaron (Jan 03)
- Re: Service Provider NetFlow Collectors jim deleskie (Jan 16)