I have got a solution: default volume size is 5 GB in splunk for each of the container, either you need to increase the volume size (for path /var/lib/docker/volumes path on host machine of the docker containers ) or reduce the parameter value to lower the size in server.conf of each of the container: refer below thread for more details: https://docs.splunk.com/Documentation/Splunk/7.3.0/Indexer/Setlimitsondiskusage#Set_minimum_free_disk_space ... View more