Vector

Write data

Configure

Create a file named vector.toml and copy the following content into it.

[sources.in]
type = "host_metrics"
scrape_interval_secs = 5

[sinks.greptime]
inputs = ["in"]
type = "greptimedb"
endpoint = "greptimedb:4001"
dbname = "public"

The configuration collects host_metrics as a Vector source and uses local GreptimeDB as the sink destination. The host greptimedb in the endpoint is the service name of GreptimeDB in the Docker network.

Start

Here we use Docker Compose to start GreptimeDB, Vector and Grafana. To do this, create a docker-compose.yml file with the following content:

services:
  grafana:
    image: grafana/grafana-oss:<%grafana-version%>
    container_name: grafana
    ports:
      - 3000:3000

  greptime:
    image: greptime/greptimedb:<%greptimedb-version%>
    container_name: greptimedb
    ports:
      - 4000:4000
      - 4001:4001
      - 4002:4002
      - 4003:4003
    command: "standalone start --http-addr 0.0.0.0:4000 --rpc-addr 0.0.0.0:4001 --mysql-addr 0.0.0.0:4002 --postgres-addr 0.0.0.0:4003"
    volumes:
      - ./greptimedb:/tmp/greptimedb

  vector:
    image: timberio/vector:<%vector-version%>
    container_name: vector
    ports:
      - 8686:8686
    volumes:
      - ./vector.toml:/etc/vector/vector.toml:ro

networks: {}

Then run the following command:

docker-compose up

After every service starts successfully, the host metrics will be collected and sent to GreptimeDB.

Visualize Data with Grafana

Next Steps