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Update DC/OS guidance for cardinality

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Daniel Nelson 2018-03-26 19:20:27 -07:00
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plugins/inputs/dcos/README.md
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@ -8,11 +8,18 @@ Depending on the work load of your DC/OS cluster, this plugin can quickly
create a high number of series which, when unchecked, can cause high load on
your database.
- Use [measurement filtering](https://github.com/influxdata/telegraf/blob/master/docs/CONFIGURATION.md#measurement-filtering) liberally to exclude unneeded metrics as well as the node, container, and app inclue/exclude options.
- Write to a database with an appropriate [retention policy](https://docs.influxdata.com/influxdb/v1.3/concepts/glossary/#retention-policy-rp).
- Limit the number of series allowed in your database using the `max-series-per-database` and `max-values-per-tag` settings.
- Consider enabling the [TSI](https://docs.influxdata.com/influxdb/v1.3/about_the_project/releasenotes-changelog/#release-notes-8) engine.
- Monitor your [series cardinality](https://docs.influxdata.com/influxdb/v1.3/troubleshooting/frequently-asked-questions/#how-can-i-query-for-series-cardinality).
- Use the
[measurement filtering](https://docs.influxdata.com/telegraf/latest/administration/configuration/#measurement-filtering)
options to exclude unneeded tags.
- Write to a database with an appropriate
[retention policy](https://docs.influxdata.com/influxdb/latest/guides/downsampling_and_retention/).
- Limit series cardinality in your database using the
[`max-series-per-database`](https://docs.influxdata.com/influxdb/latest/administration/config/#max-series-per-database-1000000) and
[`max-values-per-tag`](https://docs.influxdata.com/influxdb/latest/administration/config/#max-values-per-tag-100000) settings.
- Consider using the
[Time Series Index](https://docs.influxdata.com/influxdb/latest/concepts/time-series-index/).
- Monitor your databases
[series cardinality](https://docs.influxdata.com/influxdb/latest/query_language/spec/#show-cardinality).
### Configuration:
```toml