Troubleshooting

Ansible output

Prior to playbook invocation:

export ANSIBLE_STDOUT_CALLBACK=debug
# export ANSIBLE_STDOUT_CALLBACK=yaml

if ( $host !~* ^(yourdomain.com|www.yourdomain.com)$ ) {
  return 444;
}

Check killed processes:

sudo dmesg -T | egrep -i 'killed process'+

The following setting will prevent OOM from killing the process:

[Service]
OOMScoreAdjust=-999