OSError: Cannot allocate memory

[apurvann]

I am trying to deploy my cluster on openstack using this command: kubespray openstack --masters 2 --nodes 3 --etcds 3 --noclone --cluster-name sparkt

It ran fine the first time, but after that I have been experiencing memory errors (shown below)

TASK [download : container_download | Download containers if pull is required or told to always pull] *******************************************************************************************
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: OSError: [Errno 12] Cannot allocate memory
fatal: [k8s-sparkt-bs41rs]: FAILED! => {"failed": true, "msg": "Unexpected failure during module execution.", "stdout": ""}

I tried to configure the swap but it failed saying that it won't progress if it finds the swap.

Anyone ran into this error before?