message: Add logging advice
diff: @@ -22,6 +22,8 @@ docker-compose \
  up --build --detach
  ```
  +*Note*: This generates a large amount of log data which docker stores by default. See [Disk Usage](#disk-usage).
  +
  To start the stack with monitoring enabled, just add the metric composition file.
  ```
  docker-compose \
  @@ -75,3 +77,33 @@ After starting up the project Grafana should be listening on http://localhost:30
  Access this link and authenticate as `admin` (see #Authentication)
  From the Dashboard list, select "Geth dashboard".
  +
  +## Disk Usage
  +
  +The logs generated are in the gigabytes per day range, so you need to be wary of disk exhaustion when running for long periods.
  +
  +One way to solve this is to configure `/etc/docker/daemon.json` like this:
  +
  +```json
  +{
  + "log-driver": "json-file",
  + "log-opts": {
  + "max-size": "10m",
  + "max-file": "3"
  + }
  +}
  +```
  +
  +This configures log rotation with a limit of 10MB per file and storing a maximum of three files (per container). [More details on docker logging configuration](https://docs.docker.com/config/containers/logging/configure/).
  +
  +You can also decrease logging by increasing polling intervals:
  +
  +```env
  +DATA_TRANSPORT_LAYER__POLLING_INTERVAL=100
  +```
  +- [./envs/dtl.env#L7](./envs/dtl.env#L7)
  +
  +```env
  +ROLLUP_POLL_INTERVAL_FLAG=500ms
  +```
  +- [./envs/geth.env#L8](./envs/geth.env#L8)
  