Heat template size restriction

[Kevin Carter]

When running a deployment the heat template size could be too small to support a production set of templates. We need to increase the acceptable size and potentially add a way to arbitrarily set config within ephemeral heat so that operators can resolve these types of issues on their own without requiring changes to the core framework.

Example error: https://paste.opendev.org/show/807509

[Rabi Mishra (rabi)]

This restriction is intentional as we store every template in the database[1] and will have performance implications, if we allow them to be arbitrarily changed. IMO, 0.5 MB for a single template is actually on the higher side.

Just wondering as in the patch proposed by James, what has changed with ephemeral heat that template sizes have become bigger suddenly or we used to configure that before ephemeral heat?

The paste in the bug report looks like a different error.

[Kevin Carter (kevin-carter)]

Sorry about that - this is the correct paste which contained the error: https://paste.opendev.org/show/807367

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/python-tripleoclient/+/801955

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Bogdan Dobrelya <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/python-tripleoclient/+/801955