Simplistic cousin of Elasticsearch curator, created for one purpose only: Delete log indices created by fluentd which are older than a certain number of days.

The following environment variables can be used for configuration:

• ELASTICSEARCH_HOST: Name of the host that's running elasticsearch (default: elasticsearch:9200)
• RETENTION_DAYS: Number of days to keep indices for (default: 14)
• INDEX_NAME_PREFIX: Name prefix of the temporal index (default: fluentd-). This can also be a space-separated list of names, which means that there are several indexes per temporal unit.
• INDEX_NAME_TIMEFORMAT: Temporal string format in the index name (default: %Y.%m.%d)