Simple docker container that does logrotate. Designed as sidecar container for Kubernetes pods that write logfiles but don't do rotation themselves.

• You most likely don't want to keep a ton of old log files in a running pod
• The purpose of this is solely to ensure logs don't fill up the disk - not long-term archival
• Instead, use a sidecar to tail the active log and let the K8S log collector handle the rest

• Use shared volumes to share log files with a container that produces logfiles
• Set LOGROTATE_PATTERN etc. to configure what logrotate watches, log file size, etc.
• See docker-compose.yaml for a sample app

docker run -it --rm \ --env CRON_SCHEDULE='' \ --env LOGROTATE_SIZE=1M \ --env LOGROTATE_PATTERN=/myapp/logs/*.log \ -v logs:/myapp/logs quay.io/honestbee/logrotate

• Starts a small sample app that writes a logfile and rotates it:

  docker-compose up

Most options below are substituted into the config file for logrotate, so please refer to the Manpage for logrotate for detailled documentation.

blacklabelops/logrotate allows more configuration options but was not chosen on grounds of the images not being controlled by us and the sensitive nature of logs.

• Manpage for logrotate
• Log handling in Kubernetes