EXCEPTION OCCURRED - ApplicationName='df', CommandLine='-P /media/eventstore-data', CurrentDirectory='', Native error= Out of memory


I’m in the process of setting up ES on an AWS EC2 instance running Ubuntu 18.04.2 LTS.

Event Store will start but in the logs I see a lot of

EXCEPTION OCCURRED - ApplicationName=‘df’, CommandLine=’-P /media/eventstore-data’, CurrentDirectory=’’, Native error= Out of memory


When I run df myself everything looks fine:

df -P /media/eventstore-data
Filesystem 1024-blocks Used Available Capacity Mounted on

/dev/nvme1n1 104806400 1018912 103787488 1% /media/eventstore-data


Any pointers as to why I’m seeing these exceptions and what I can do to fix it?

Do you have any kind of reference architecture for running Event Store on AWS?

Best regards,


Also seeing

ApplicationName=‘free’, CommandLine=’-b’, CurrentDirectory=’’, Native error= Out of memory


Also from the Monitoring service. So to recap, the monitoring service is reporting

  • Could not get drive name for directory ‘{directory}’ on Unix.
  • Could not get free mem on linux, received memory info raw string: [{meminfo}]

Which version of ES did you installed? Did you installed mono 5.16.0?

Use this: http://www.dinuzzo.co.uk/2017/03/12/run-eventstore-oss-on-an-ec2-aws-instance/

Thanks, I had the mono version wrong.