Maintaining the application

Logs and Logrotation

Container-Logs: docker logs ktdocker0
Application-Logs: Stored in container volume /rw/var/log and rotates into /rw/var/log.bak

Log-Rotation

Before midnight, the ktdocker0 container will rotate logs and exit. The container might also terminate in case of an error.

Create a service (e.g. systemd) to start the ktdocker0 container. This service should automatically restart the container in case it terminates.

View logs

# last 100 lines of Container-Logs
sudo docker logs --tail 100 ktdocker0

# Lost files in log directory in container
docker run --rm \
  -v ktdocker0rw:/rw \
  alpine sh -c "ls -a /rw/var/logs"

Install haproxy. Proxy HTTP requests to all ktdocker containers.

Install nginx webserver and reverse proxy. Configure TLS termination. Proxy HTTP requests to haproxy.

Backups

Backup regularly:

the database
the docker volumes