Server deployment

Run tsink as a standalone HTTP server that speaks every major metrics protocol. A single static binary — no external runtime dependencies, no OpenSSL.

cargo build -p tsink-server --release

./target/release/tsink-server \
  --listen 127.0.0.1:9201 \
  --data-path ./var/tsink

Quick start

# Start a minimal single-node server.
tsink-server --listen 0.0.0.0:9201 --data-path /var/lib/tsink

# Write via Prometheus text exposition.
curl -X POST http://127.0.0.1:9201/api/v1/import/prometheus \
  -H 'Content-Type: text/plain' \
  -d 'http_requests_total{method="GET"} 1027 1700000000000'

# Instant PromQL query.
curl 'http://127.0.0.1:9201/api/v1/query?query=http_requests_total'

# Health probe.
curl http://127.0.0.1:9201/healthz

Building from source

# Release build (recommended for production).
cargo build -p tsink-server --release
# Binary path: target/release/tsink-server

# Development build.
cargo build -p tsink-server

protoc is vendored at build time — no installation required.

CLI flags

All flags can be passed directly on the command line. Use --help to print the full listing with types and defaults.

Network

Flag	Default	Description
`--listen`	`127.0.0.1:9201`	TCP address for the HTTP/HTTPS listener.
`--statsd-listen`	disabled	UDP address for the StatsD listener.
`--statsd-tenant`	`default`	Tenant ID for StatsD writes.
`--graphite-listen`	disabled	TCP address for the Graphite plaintext listener.
`--graphite-tenant`	`default`	Tenant ID for Graphite writes.

Storage

Flag	Default	Description
`--data-path PATH`	none	Directory for WAL, segments, metadata, and rules. Required for persistent storage.
`--object-store-path PATH`	none	Shared directory (or object-store prefix) for warm/cold tier segments.
`--wal-enabled BOOL`	`true`	Enable or disable the write-ahead log.
`--wal-sync-mode MODE`	`per-append`	WAL durability policy: `per-append` (crash-safe) or `periodic` (higher throughput).
`--timestamp-precision PRECISION`	`ms`	Interpret ingested timestamps as `s`, `ms`, `us`, or `ns`.
`--retention DURATION`	14 days	Global data retention window (e.g. `30d`, `720h`).
`--hot-tier-retention DURATION`	none	Age threshold before segments move from hot to warm.
`--warm-tier-retention DURATION`	none	Age threshold before segments move from warm to cold.
`--storage-mode MODE`	`read-write`	`read-write` for full local persistence, `compute-only` for query-only nodes backed by object store.
`--remote-segment-refresh-interval DURATION`	default	Metadata refresh TTL for `compute-only` nodes.
`--mirror-hot-segments-to-object-store BOOL`	`false`	Copy hot-tier segments to the object store for DR. Requires `--object-store-path`.

Memory and performance

Flag	Default	Description
`--memory-limit BYTES`	unlimited	Memory budget for in-memory data (e.g. `1G` or `1073741824`). Triggers admission backpressure when exceeded.
`--cardinality-limit N`	unlimited	Maximum number of unique series. New series are rejected at the limit.
`--chunk-points N`	engine default	Target number of data points per in-memory chunk before sealing.
`--max-writers N`	CPU count	Parallel writer threads for ingestion.

TLS

Flag	Default	Description
`--tls-cert PATH`	none	PEM TLS certificate. Must be paired with `--tls-key`.
`--tls-key PATH`	none	PEM TLS private key. Must be paired with `--tls-cert`.

TLS uses rustls — no OpenSSL is required.

Authentication

Flag	Default	Description
`--auth-token TOKEN`	none	Bearer token required on all public requests.
`--auth-token-file PATH`	none	Load the public Bearer token from a file or exec manifest. Mutually exclusive with `--auth-token`.
`--admin-auth-token TOKEN`	none	Bearer token required for `PUT /api/v1/admin/*` endpoints only.
`--admin-auth-token-file PATH`	none	Load the admin Bearer token from a file or exec manifest. Mutually exclusive with `--admin-auth-token`.
`--rbac-config PATH`	none	RBAC roles, service accounts, and OIDC mappings (JSON). Supersedes legacy token auth when present.
`--tenant-config PATH`	none	Per-tenant authorization quotas and admission policies (JSON).

--auth-token and --auth-token-file are mutually exclusive. --admin-auth-token and --admin-auth-token-file are mutually exclusive.

Admin API

Flag	Default	Description
`--enable-admin-api`	disabled	Enable snapshot, restore, rollup, cluster, and RBAC admin endpoints. Requires at least one auth option.
`--admin-path-prefix PATH`	none	Restrict admin file-system operations (snapshot/restore) to paths under PATH. Requires `--enable-admin-api`.

Edge sync

Edge sync lets an edge node queue writes locally and replay them to a central server, tolerating network partitions.

Flag	Default	Description
`--edge-sync-upstream HOST:PORT`	disabled	Upstream tsink-server to replay writes to. Requires `--edge-sync-auth-token` and `--data-path`.
`--edge-sync-auth-token TOKEN`	none	Shared token for edge sync replay and accept-side ingest.
`--edge-sync-source-id ID`	listen address	Stable source identifier for idempotency keys.
`--edge-sync-static-tenant ID`	preserve	Rewrite all replayed rows into a single upstream tenant.

Edge sync and cluster mode are mutually exclusive.

Cluster

See the cluster setup guide for full cluster documentation.

Flag	Default	Description
`--cluster-enabled BOOL`	`false`	Enable cluster mode.
`--cluster-node-id ID`	none	Stable identifier for this node.
`--cluster-bind HOST:PORT`	none	Internal RPC bind/advertise address.
`--cluster-node-role ROLE`	`hybrid`	Node role: `storage`, `query`, or `hybrid`.
`--cluster-seeds HOST:PORT,...`	none	Comma-separated seed peers for bootstrap.
`--cluster-shards N`	default	Logical shard count for the consistent hash ring.
`--cluster-replication-factor N`	default	Replicas per shard.
`--cluster-write-consistency MODE`	`quorum`	Write consistency: `one`, `quorum`, or `all`.
`--cluster-read-consistency MODE`	`eventual`	Read consistency: `eventual`, `quorum`, or `strict`.
`--cluster-read-partial-response MODE`	`allow`	Partial read policy: `allow` or `deny`.
`--cluster-internal-auth-token TOKEN`	none	Shared secret for internal RPC when mTLS is disabled.
`--cluster-internal-auth-token-file PATH`	none	Load the internal RPC token from a file or exec manifest.
`--cluster-internal-mtls-enabled BOOL`	`false`	Enable mTLS for peer-to-peer RPC.
`--cluster-internal-mtls-ca-cert PATH`	none	PEM CA bundle for peer certificate verification.
`--cluster-internal-mtls-cert PATH`	none	PEM client certificate for outbound RPC.
`--cluster-internal-mtls-key PATH`	none	PEM client private key for outbound RPC.

Environment variables

Admission control, rules evaluation, and edge sync behaviour are tuned through environment variables rather than CLI flags.

Write admission

Variable	Default	Description
`TSINK_SERVER_WRITE_MAX_INFLIGHT_REQUESTS`	`64`	Maximum concurrent write requests.
`TSINK_SERVER_WRITE_MAX_INFLIGHT_ROWS`	`200000`	Maximum total rows allowed in flight across all concurrent write requests.
`TSINK_SERVER_WRITE_RESOURCE_ACQUIRE_TIMEOUT_MS`	`25`	Milliseconds to wait for an admission slot before returning 429.

Read admission

Variable	Default	Description
`TSINK_SERVER_READ_MAX_INFLIGHT_REQUESTS`	`64`	Maximum concurrent read requests.
`TSINK_SERVER_READ_MAX_INFLIGHT_QUERIES`	`128`	Maximum total PromQL queries allowed in flight across all concurrent read requests.
`TSINK_SERVER_READ_RESOURCE_ACQUIRE_TIMEOUT_MS`	`25`	Milliseconds to wait for an admission slot before returning 429.

Remote write feature flags

Variable	Default	Description
`TSINK_REMOTE_WRITE_METADATA_ENABLED`	`false`	Accept metric metadata in Prometheus remote write payloads.
`TSINK_REMOTE_WRITE_MAX_METADATA_UPDATES`	`512`	Maximum metadata updates accepted per remote write request.
`TSINK_REMOTE_WRITE_EXEMPLARS_ENABLED`	`false`	Accept exemplars in Prometheus remote write payloads.
`TSINK_REMOTE_WRITE_HISTOGRAMS_ENABLED`	`false`	Accept native histograms in Prometheus remote write payloads.
`TSINK_REMOTE_WRITE_MAX_HISTOGRAM_BUCKET_ENTRIES`	`16384`	Maximum bucket entries per histogram in a remote write payload.
`TSINK_OTLP_METRICS_ENABLED`	`false`	Enable the OTLP `/v1/metrics` endpoint.

Rules engine

Variable	Default	Description
`TSINK_RULES_SCHEDULER_TICK_MS`	`1000`	Evaluation interval in milliseconds.
`TSINK_RULES_MAX_RECORDING_ROWS_PER_EVAL`	`10000`	Maximum rows a recording rule may write per evaluation tick.
`TSINK_RULES_MAX_ALERT_INSTANCES_PER_RULE`	`10000`	Maximum active alert instances per rule.

Edge sync tuning

Variable	Default	Description
`TSINK_EDGE_SYNC_MAX_ENTRIES`	`100000`	Maximum entries in the edge sync queue.
`TSINK_EDGE_SYNC_MAX_BYTES`	`536870912` (512 MiB)	Maximum queue size in bytes.
`TSINK_EDGE_SYNC_MAX_LOG_BYTES`	`2147483648` (2 GiB)	Maximum total log file size.
`TSINK_EDGE_SYNC_MAX_RECORD_BYTES`	`2097152` (2 MiB)	Maximum size of a single queued record.
`TSINK_EDGE_SYNC_REPLAY_INTERVAL_SECS`	`2`	Seconds between upstream replay attempts.
`TSINK_EDGE_SYNC_REPLAY_BATCH_SIZE`	`256`	Rows per replay batch.
`TSINK_EDGE_SYNC_MAX_BACKOFF_SECS`	`30`	Maximum retry back-off on upstream failures.
`TSINK_EDGE_SYNC_CLEANUP_INTERVAL_SECS`	`30`	Seconds between queue cleanup passes.
`TSINK_EDGE_SYNC_PRE_ACK_RETENTION_SECS`	`86400` (24 h)	How long to retain entries pending upstream acknowledgment.
`TSINK_EDGE_SYNC_DEDUPE_WINDOW_SECS`	`86400` (24 h)	Deduplication window for replayed writes.
`TSINK_EDGE_SYNC_DEDUPE_MAX_ENTRIES`	default	Maximum entries in the deduplication store.
`TSINK_EDGE_SYNC_DEDUPE_MAX_LOG_BYTES`	default	Maximum size of the deduplication log.
`TSINK_EDGE_SYNC_DEDUPE_CLEANUP_INTERVAL_SECS`	default	Seconds between deduplication cleanup passes.

HTTP endpoints

All endpoints are on the same --listen address. /healthz and /ready require no authentication. All other endpoints require a valid Authorization: Bearer <token> header when --auth-token or --rbac-config is set.

Health and observability

Method	Path	Description
`GET`	`/healthz`	Liveness probe — returns 200 when the process is running.
`GET`	`/ready`	Readiness probe — returns 200 once the storage engine is ready to serve traffic.
`GET`	`/metrics`	Self-instrumentation in Prometheus text format.

PromQL queries

Method	Path	Description
`GET`, `POST`	`/api/v1/query`	Instant query.
`GET`, `POST`	`/api/v1/query_range`	Range query.
`GET`	`/api/v1/series`	Series metadata matching `match[]` selector.
`GET`	`/api/v1/labels`	All label names.
`GET`	`/api/v1/label/<name>/values`	Values for a label name.
`GET`	`/api/v1/metadata`	Metric metadata.
`GET`	`/api/v1/query_exemplars`	Query exemplars by selector and time range.
`GET`	`/api/v1/status/tsdb`	TSDB-level stats (series count, cardinality).

Ingestion

Method	Path	Protocol
`POST`	`/api/v1/write`	Prometheus remote write (snappy-framed protobuf).
`POST`	`/api/v1/read`	Prometheus remote read.
`POST`	`/api/v1/import/prometheus`	Prometheus text exposition bulk import.
`POST`	`/write`	InfluxDB line protocol (v1 path).
`POST`	`/api/v2/write`	InfluxDB line protocol (v2 path).
`POST`	`/v1/metrics`	OTLP HTTP/protobuf metrics. Requires `TSINK_OTLP_METRICS_ENABLED=true`.

StatsD and Graphite use separate UDP/TCP listeners configured via --statsd-listen and --graphite-listen.

Admin endpoints

Admin endpoints are only served when --enable-admin-api is set and require the admin Bearer token.

Method	Path	Description
`POST`	`/api/v1/admin/snapshot`	Create an atomic snapshot of the data directory.
`POST`	`/api/v1/admin/restore`	Restore a snapshot to the data path.
`POST`	`/api/v1/admin/rollups/apply`	Replace persisted rollup policies.
`POST`	`/api/v1/admin/rollups/run`	Run one synchronous rollup materialization pass.
`GET`	`/api/v1/admin/rollups/status`	Rollup policy freshness and coverage.
`POST`	`/api/v1/admin/delete_series`	Delete series by `match[]` selector with optional time range.
`GET`	`/api/v1/admin/rbac/state`	Inspect live RBAC roles, service accounts, and OIDC mappings.
`GET`	`/api/v1/admin/rbac/audit`	Inspect recent RBAC decision and reload audit entries.
`POST`	`/api/v1/admin/rbac/reload`	Reload RBAC config from disk without restarting.
`POST`	`/api/v1/admin/rbac/service_accounts/create`	Create a scoped service account and return its token.
`POST`	`/api/v1/admin/rbac/service_accounts/update`	Update service-account bindings or metadata.
`POST`	`/api/v1/admin/rbac/service_accounts/rotate`	Rotate a service-account token.
`POST`	`/api/v1/admin/rbac/service_accounts/disable`	Disable a service account.
`POST`	`/api/v1/admin/rbac/service_accounts/enable`	Re-enable a disabled service account.
`GET`	`/api/v1/admin/support_bundle`	Download a bounded JSON diagnostic snapshot for one tenant.

Cluster admin endpoints (/api/v1/admin/cluster/*) are documented in the cluster setup guide.

Authentication

Bearer token

Pass a static shared token with --auth-token:

tsink-server \
  --listen 0.0.0.0:9201 \
  --data-path /var/lib/tsink \
  --auth-token "my-secret-token"

Clients must include Authorization: Bearer my-secret-token on every request (except /healthz and /ready).

Token from a file

--auth-token-file reads the token from a plain text file (leading/trailing whitespace is trimmed):

echo "my-secret-token" > /run/secrets/tsink-token
tsink-server \
  --auth-token-file /run/secrets/tsink-token \
  --data-path /var/lib/tsink

The file can also be an exec manifest — a JSON object with a cmd array that is executed to produce the token, enabling dynamic credential retrieval.

Separate admin token

Use --admin-auth-token to require a distinct token for admin endpoints while keeping a different token (or no token) for data endpoints:

tsink-server \
  --auth-token "reader-token" \
  --enable-admin-api \
  --admin-auth-token "admin-only-token" \
  --data-path /var/lib/tsink

RBAC

Pass --rbac-config for role-based access with OIDC JWT or service account authentication. Full RBAC reference is in the security model guide.

TLS

Provide a certificate and key pair to enable HTTPS:

tsink-server \
  --listen 0.0.0.0:9201 \
  --data-path /var/lib/tsink \
  --tls-cert /etc/tsink/tls/server.pem \
  --tls-key  /etc/tsink/tls/server.key \
  --auth-token "my-secret-token"

--tls-cert and --tls-key must both be present or both absent. TLS is implemented with rustls — no OpenSSL dependency. Certificates are hot-reloadable via the secret rotation API without restarting the process. See the secret rotation guide for details.

Data directory layout

<data-path>/
├── wal/                        # Write-ahead log segments
├── index/                      # Series index structures
├── segments/                   # Persisted data chunks
│   ├── hot/                    # Hot-tier segments
│   ├── warm/                   # Warm-tier segments (when tiering is configured)
│   └── cold/                   # Cold-tier segments (when tiering is configured)
├── metadata/                   # Metric metadata and exemplar stores
├── rules-store.json            # Persisted recording and alerting rules
└── edge_sync/                  # Edge sync queue (when edge sync is configured)
    ├── queue.log               # Pending write entries
    └── dedupe.log              # Deduplication window

When cluster mode is enabled, additional directories are created under <data-path> for control-plane state, consensus log, audit log, and the hinted-handoff outbox. Exact paths are printed to stderr during startup.

Startup behaviour

The server prints diagnostic lines to stderr during bootstrap that confirm path locations and configuration parameters:

cluster control-state store initialized at /var/lib/tsink/control-state (schema v1)
cluster control-log consensus initialized at /var/lib/tsink/control-log
cluster audit log initialized at /var/lib/tsink/audit.log
cluster dedupe marker store initialized at /var/lib/tsink/dedupe
cluster hinted-handoff outbox initialized at /var/lib/tsink/outbox

The TCP listener binds last. Once bound, the server is ready to accept connections.

Graceful shutdown

The server handles SIGTERM and SIGINT (Ctrl-C). On receipt, it:

Stops accepting new connections.
Waits up to 10 seconds for in-flight requests to complete.
Flushes and closes the storage runtime.

Kubernetes deployment

Deployment example

apiVersion: apps/v1
kind: Deployment
metadata:
  name: tsink
spec:
  replicas: 1
  selector:
    matchLabels:
      app: tsink
  template:
    metadata:
      labels:
        app: tsink
    spec:
      containers:
        - name: tsink
          image: your-registry/tsink-server:0.10.0
          args:
            - --listen=0.0.0.0:9201
            - --data-path=/data
            - --auth-token=$(TSINK_AUTH_TOKEN)
          env:
            - name: TSINK_AUTH_TOKEN
              valueFrom:
                secretKeyRef:
                  name: tsink-secrets
                  key: auth-token
          ports:
            - containerPort: 9201
          livenessProbe:
            httpGet:
              path: /healthz
              port: 9201
            initialDelaySeconds: 5
            periodSeconds: 10
          readinessProbe:
            httpGet:
              path: /ready
              port: 9201
            initialDelaySeconds: 5
            periodSeconds: 5
          volumeMounts:
            - name: data
              mountPath: /data
      volumes:
        - name: data
          persistentVolumeClaim:
            claimName: tsink-data

Prometheus scrape config

scrape_configs:
  - job_name: tsink
    static_configs:
      - targets: ["tsink:9201"]
    authorization:
      credentials: "my-secret-token"

Example configurations

Minimal persistent single node

tsink-server \
  --listen 0.0.0.0:9201 \
  --data-path /var/lib/tsink

Production single node with auth, TLS, and retention

tsink-server \
  --listen 0.0.0.0:9201 \
  --data-path /var/lib/tsink \
  --retention 30d \
  --memory-limit 4G \
  --tls-cert /etc/tsink/server.pem \
  --tls-key  /etc/tsink/server.key \
  --auth-token-file /run/secrets/tsink-token \
  --enable-admin-api \
  --admin-auth-token-file /run/secrets/tsink-admin-token

Tiered storage with object store

tsink-server \
  --listen 0.0.0.0:9201 \
  --data-path /var/lib/tsink \
  --object-store-path /mnt/object-store/tsink \
  --hot-tier-retention 7d \
  --warm-tier-retention 30d \
  --retention 365d

Query-only (compute-only) node

tsink-server \
  --listen 0.0.0.0:9201 \
  --storage-mode compute-only \
  --object-store-path /mnt/object-store/tsink

Edge node forwarding to central server

# Edge node — buffers writes locally and replays to upstream.
tsink-server \
  --listen 127.0.0.1:9201 \
  --data-path /var/lib/tsink-edge \
  --edge-sync-upstream central.example.com:9201 \
  --edge-sync-auth-token "shared-edge-token" \
  --edge-sync-source-id "edge-node-1"

# Central server — accepts replayed writes.
tsink-server \
  --listen 0.0.0.0:9201 \
  --data-path /var/lib/tsink \
  --edge-sync-auth-token "shared-edge-token"

Single node with StatsD and Graphite

tsink-server \
  --listen 0.0.0.0:9201 \
  --data-path /var/lib/tsink \
  --statsd-listen 0.0.0.0:8125 \
  --graphite-listen 0.0.0.0:2003

Connection limits

Limit	Value
Maximum concurrent HTTP connections	1024
TCP keep-alive interval	60 s
Keep-alive idle timeout	30 s
TLS handshake timeout	10 s
Graceful shutdown window	10 s

Admission control for concurrent write and read requests is tunable via environment variables — see Write admission and Read admission above.

​Server deployment

​Quick start

​Building from source

​CLI flags

​Network

​Storage

​Memory and performance

​TLS

​Authentication

​Admin API

​Edge sync

​Cluster

​Environment variables

​Write admission

​Read admission

​Remote write feature flags

​Rules engine

​Edge sync tuning

​HTTP endpoints

​Health and observability

​PromQL queries

​Ingestion

​Admin endpoints

​Authentication

​Bearer token

​Token from a file

​Separate admin token

​RBAC

​TLS

​Data directory layout

​Startup behaviour

​Graceful shutdown

​Kubernetes deployment

​Deployment example

​Prometheus scrape config

​Example configurations

​Minimal persistent single node

​Production single node with auth, TLS, and retention

​Tiered storage with object store

​Query-only (compute-only) node

​Edge node forwarding to central server

​Single node with StatsD and Graphite

​Connection limits

Server deployment

Quick start

Building from source

CLI flags

Network

Storage

Memory and performance

TLS

Authentication

Admin API

Edge sync

Cluster

Environment variables

Write admission

Read admission

Remote write feature flags

Rules engine

Edge sync tuning

HTTP endpoints

Health and observability

PromQL queries

Ingestion

Admin endpoints

Authentication

Bearer token

Token from a file

Separate admin token

RBAC

TLS

Data directory layout

Startup behaviour

Graceful shutdown

Kubernetes deployment

Deployment example

Prometheus scrape config

Example configurations

Minimal persistent single node

Production single node with auth, TLS, and retention

Tiered storage with object store

Query-only (compute-only) node

Edge node forwarding to central server

Single node with StatsD and Graphite

Connection limits