Limit Docker Log File Sizes

Solution 1: Global Configuration

Edit /etc/docker/daemon.json:

{
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "10m",
    "max-file": "5"
  }
}

Then restart Docker:

sudo systemctl restart docker

Solution 2: Per-Container (CLI)

docker run \
  --log-driver json-file \
  --log-opt max-size=10m \
  --log-opt max-file=5 \
  my-app:latest

Solution 3: Docker Compose

version: '3.8'
services:
  app:
    image: my-app:latest
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "5"

Check Current Log Sizes

# Find all Docker log files
du -sh /var/lib/docker/containers/*/*-json.log

# Total size of all logs
du -sh /var/lib/docker/containers/