How to debug (some) compute resources communication.
Libvirt
You cannot easily debug libvirt over the wire, it is a SSH connection wrapper around a native TCP protocol. However, it ts possible to enable debugging on the libvirt daemon and it can show verbose messages up to the XML it is processing. See: libvirt: Debug Logs
Others
Start Rails with these environment options:
EXCON_DEBUG=true DEBUG=true ./script/rails s
For production deployments:
cat > /etc/systemd/system/foreman.service.d/debug.conf <<EOF
[Service]
Environment=EXCON_DEBUG=true
Environment=DEBUG=true
This will only work for some compute resources.
This page used to be on our wiki, I am putting it here. Feel free to edit.
