frontend.example.toml

## The default timezone of the server.
## +toml2docs:none-default
default_timezone = "UTC"

## The runtime options.
[runtime]
## The number of threads to execute the runtime for global read operations.
global_rt_size = 8
## The number of threads to execute the runtime for global write operations.
compact_rt_size = 4

## The heartbeat options.
[heartbeat]
## Interval for sending heartbeat messages to the metasrv.
interval = "18s"

## Interval for retrying to send heartbeat messages to the metasrv.
retry_interval = "3s"

## The HTTP server options.
[http]
## The address to bind the HTTP server.
addr = "127.0.0.1:4000"
## HTTP request timeout. Set to 0 to disable timeout.
timeout = "30s"
## HTTP request body limit.
## The following units are supported: `B`, `KB`, `KiB`, `MB`, `MiB`, `GB`, `GiB`, `TB`, `TiB`, `PB`, `PiB`.
## Set to 0 to disable limit.
body_limit = "64MB"

## The gRPC server options.
[grpc]
## The address to bind the gRPC server.
addr = "127.0.0.1:4001"
## The hostname advertised to the metasrv,
## and used for connections from outside the host
hostname = "127.0.0.1"
## The number of server worker threads.
runtime_size = 8

## gRPC server TLS options, see `mysql.tls` section.
[grpc.tls]
## TLS mode.
mode = "disable"

## Certificate file path.
## +toml2docs:none-default
cert_path = ""

## Private key file path.
## +toml2docs:none-default
key_path = ""

## Watch for Certificate and key file change and auto reload.
## For now, gRPC tls config does not support auto reload.
watch = false

## MySQL server options.
[mysql]
## Whether to enable.
enable = true
## The addr to bind the MySQL server.
addr = "127.0.0.1:4002"
## The number of server worker threads.
runtime_size = 2

# MySQL server TLS options.
[mysql.tls]

## TLS mode, refer to https://www.postgresql.org/docs/current/libpq-ssl.html
## - `disable` (default value)
## - `prefer`
## - `require`
## - `verify-ca`
## - `verify-full`
mode = "disable"

## Certificate file path.
## +toml2docs:none-default
cert_path = ""

## Private key file path.
## +toml2docs:none-default
key_path = ""

## Watch for Certificate and key file change and auto reload
watch = false

## PostgresSQL server options.
[postgres]
## Whether to enable
enable = true
## The addr to bind the PostgresSQL server.
addr = "127.0.0.1:4003"
## The number of server worker threads.
runtime_size = 2

## PostgresSQL server TLS options, see `mysql.tls` section.
[postgres.tls]
## TLS mode.
mode = "disable"

## Certificate file path.
## +toml2docs:none-default
cert_path = ""

## Private key file path.
## +toml2docs:none-default
key_path = ""

## Watch for Certificate and key file change and auto reload
watch = false

## OpenTSDB protocol options.
[opentsdb]
## Whether to enable OpenTSDB put in HTTP API.
enable = true

## InfluxDB protocol options.
[influxdb]
## Whether to enable InfluxDB protocol in HTTP API.
enable = true

## Prometheus remote storage options
[prom_store]
## Whether to enable Prometheus remote write and read in HTTP API.
enable = true
## Whether to store the data from Prometheus remote write in metric engine.
with_metric_engine = true

## The metasrv client options.
[meta_client]
## The addresses of the metasrv.
metasrv_addrs = ["127.0.0.1:3002"]

## Operation timeout.
timeout = "3s"

## Heartbeat timeout.
heartbeat_timeout = "500ms"

## DDL timeout.
ddl_timeout = "10s"

## Connect server timeout.
connect_timeout = "1s"

## `TCP_NODELAY` option for accepted connections.
tcp_nodelay = true

## The configuration about the cache of the metadata.
metadata_cache_max_capacity = 100000

## TTL of the metadata cache.
metadata_cache_ttl = "10m"

# TTI of the metadata cache.
metadata_cache_tti = "5m"

## Datanode options.
[datanode]
## Datanode client options.
[datanode.client]
connect_timeout = "10s"
tcp_nodelay = true

## The logging options.
[logging]
## The directory to store the log files. If set to empty, logs will not be written to files.
dir = "/tmp/greptimedb/logs"

## The log level. Can be `info`/`debug`/`warn`/`error`.
## +toml2docs:none-default
level = "info"

## Enable OTLP tracing.
enable_otlp_tracing = false

## The OTLP tracing endpoint.
otlp_endpoint = "http://localhost:4317"

## Whether to append logs to stdout.
append_stdout = true

## The log format. Can be `text`/`json`.
log_format = "text"

## The percentage of tracing will be sampled and exported.
## Valid range `[0, 1]`, 1 means all traces are sampled, 0 means all traces are not sampled, the default value is 1.
## ratio > 1 are treated as 1. Fractions < 0 are treated as 0
[logging.tracing_sample_ratio]
default_ratio = 1.0

## The datanode can export its metrics and send to Prometheus compatible service (e.g. send to `greptimedb` itself) from remote-write API.
## This is only used for `greptimedb` to export its own metrics internally. It's different from prometheus scrape.
[export_metrics]

## whether enable export metrics.
enable = false

## The interval of export metrics.
write_interval = "30s"

## For `standalone` mode, `self_import` is recommend to collect metrics generated by itself
## You must create the database before enabling it.
[export_metrics.self_import]
## +toml2docs:none-default
db = "greptime_metrics"

[export_metrics.remote_write]
## The url the metrics send to. The url example can be: `http://127.0.0.1:4000/v1/prometheus/write?db=greptime_metrics`.
url = ""

## HTTP headers of Prometheus remote-write carry.
headers = { }

## The tracing options. Only effect when compiled with `tokio-console` feature.
[tracing]
## The tokio console address.
## +toml2docs:none-default
tokio_console_addr = "127.0.0.1"