On the command line:
REDIS_NAMESPACE='logstash:app:unmappable' REDIS_URL='redis://redis-internal:6379/0' beaver -f /apps/production/current/log/unmappable.log -t redis
My logstash input:
redis {
host => 'redis-internal' # this is in dns for work
data_type => 'list'
key => 'logstash:app:unmappable'
type => 'app:unmappable'
}