action #94492
Updated by ilausuch almost 3 years ago
## Motivation Currently the default retention period is in-place: ``` > use telegraf Using database telegraf > show retention policies name duration shardGroupDuration replicaN default ---- -------- ------------------ -------- ------- autogen 0s 168h0m0s 1 true ``` According to the documentation that means we store the data infinitely¹. It would be possible to configure a time-based retention policy per database (we store all our monitoring data in one database called `telegraf`): https://docs.influxdata.com/influxdb/v1.8/query_language/manage-database/#create-retention-policies-with-create-retention-policy This raises the question which durations we'd like to configure. It would also make sense to "[downsample and retain data](https://docs.influxdata.com/influxdb/v1.8/guides/downsample_and_retain/)" to store data with less granularity over time. I haven't found anything about disk-space-based retention policies within the documentation of InfluxDB so I **assume** this is not an option. --- ¹ > When you create a database, InfluxDB creates a retention policy called autogen with an infinite duration… ## Acceptance Criteria * **AC 1**: The directory /var/lib/influxdb has significanlly less than 120GB. ## Suggestions * Ensure we have a backup before the process remove data * Check what the current InfluxDB provides * We want at least 6 months of data to rollback checks. But can be downsampling. * If we have downsampling, at least 1 month of full data