The compactor component of Thanos applies the compaction procedure of the Prometheus 2.0 storage engine to block data stored in object storage. It is generally not semantically concurrency safe and must be deployed as a singleton against a bucket.
Example:
$ thanos compact --data-dir /tmp/thanos-compact --objstore.config-file=bucket.yml
The content of bucket.yml
:
type: GCS
config:
bucket: example-bucket
The compactor needs local disk space to store intermediate data for its processing. Generally, about 100GB are recommended for it to keep working as the compacted time ranges grow over time. On-disk data is safe to delete between restarts and should be the first attempt to get crash-looping compactors unstuck.
usage: thanos compact [<flags>]
continuously compacts blocks in an object store bucket
Flags:
-h, --help Show context-sensitive help (also try --help-long and
--help-man).
--version Show application version.
--log.level=info Log filtering level.
--log.format=logfmt Log format to use.
--gcloudtrace.project=GCLOUDTRACE.PROJECT
GCP project to send Google Cloud Trace tracings to.
If empty, tracing will be disabled.
--gcloudtrace.sample-factor=1
How often we send traces (1/<sample-factor>). If 0 no
trace will be sent periodically, unless forced by
baggage item. See `pkg/tracing/tracing.go` for
details.
--http-address="0.0.0.0:10902"
Listen host:port for HTTP endpoints.
--data-dir="./data" Data directory in which to cache blocks and process
compactions.
--objstore.config-file=<bucket.config-yaml-path>
Path to YAML file that contains object store
configuration.
--objstore.config=<bucket.config-yaml>
Alternative to 'objstore.config-file' flag. Object
store configuration in YAML.
--sync-delay=30m Minimum age of fresh (non-compacted) blocks before
they are being processed.
--retention.resolution-raw=0d
How long to retain raw samples in bucket. 0d -
disables this retention
--retention.resolution-5m=0d
How long to retain samples of resolution 1 (5
minutes) in bucket. 0d - disables this retention
--retention.resolution-1h=0d
How long to retain samples of resolution 2 (1 hour)
in bucket. 0d - disables this retention
-w, --wait Do not exit after all compactions have been processed
and wait for new work.