The store component of Thanos implements the Store API on top of historical data in an object storage bucket. It acts primarily as an API gateway and therefore does not need significant amounts of local disk space. It joins a Thanos cluster on startup and advertises the data it can access. It keeps a small amount of information about all remote blocks on local disk and keeps it in sync with the bucket. This data is generally safe to delete across restarts at the cost of increased startup times.
$ thanos store \ --data-dir "/local/state/data/dir" \ --gcs.bucket "example-bucket" \ --cluster.peers "thanos-cluster.example.org"
In general about 1MB of local disk space is required per TSDB block stored in the object storage bucket.
usage: thanos store [<flags>] store node giving access to blocks in a GCS 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. --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. --grpc-address="0.0.0.0:10901" Listen ip:port address for gRPC endpoints (StoreAPI). Make sure this address is routable from other components if you use gossip, 'grpc-advertise-address' is empty and you require cross-node connection. --grpc-advertise-address=GRPC-ADVERTISE-ADDRESS Explicit (external) host:port address to advertise for gRPC StoreAPI in gossip cluster. If empty, 'grpc-address' will be used. --http-address="0.0.0.0:10902" Listen host:port for HTTP endpoints. --cluster.address="0.0.0.0:10900" Listen ip:port address for gossip cluster. --cluster.advertise-address=CLUSTER.ADVERTISE-ADDRESS Explicit (external) ip:port address to advertise for gossip in gossip cluster. Used internally for membership only. --cluster.peers=CLUSTER.PEERS ... Initial peers to join the cluster. It can be either <ip:port>, or <domain:port>. A lookup resolution is done only at the startup. --cluster.gossip-interval=<gossip interval> Interval between sending gossip messages. By lowering this value (more frequent) gossip messages are propagated across the cluster more quickly at the expense of increased bandwidth. Default is used from a specified network-type. --cluster.pushpull-interval=<push-pull interval> Interval for gossip state syncs. Setting this interval lower (more frequent) will increase convergence speeds across larger clusters at the expense of increased bandwidth usage. Default is used from a specified network-type. --cluster.refresh-interval=1m Interval for membership to refresh cluster.peers state, 0 disables refresh. --cluster.secret-key=CLUSTER.SECRET-KEY Initial secret key to encrypt cluster gossip. Can be one of AES-128, AES-192, or AES-256 in hexadecimal format. --cluster.network-type=lan Network type with predefined peers configurations. Sets of configurations accounting the latency differences between network types: local, lan, wan. --data-dir="./data" Data directory in which to cache remote blocks. --gcs.bucket=<bucket> Google Cloud Storage bucket name for stored blocks. If empty sidecar won't store any block inside Google Cloud Storage. --s3.bucket=<bucket> S3-Compatible API bucket name for stored blocks. --s3.endpoint=<api-url> S3-Compatible API endpoint for stored blocks. --s3.access-key=<key> Access key for an S3-Compatible API. --s3.insecure Whether to use an insecure connection with an S3-Compatible API. --s3.signature-version2 Whether to use S3 Signature Version 2; otherwise Signature Version 4 will be used. --s3.encrypt-sse Whether to use Server Side Encryption --index-cache-size=250MB Maximum size of items held in the index cache. --chunk-pool-size=2GB Maximum size of concurrently allocatable bytes for chunks.