1.15.11 — Fix the staging pre-filter 1.15.10 broke

2026-08-20

1.15.10 moved the $connection_upgrade map out of the rendered http base and into the node bootstrap, but did not add it to the staging harness — the self-contained config the unprivileged nginx -t pre-filter validates against, which stands in for the node's own nginx.conf. So on 1.15.10 every edge convergence fails its pre-filter with unknown "connection_upgrade" variable and installs nothing. Upgrade straight past it.

Fixed

• The staging nginx -t harness declares $connection_upgrade, alongside the default_type and types_hash_max_size it already declared. Without it, every generation rendered on 1.15.10 failed its pre-filter and no edge vhost could be installed.

Added

• A test pinning the invariant in both directions: whatever render_http_base stops rendering must appear in the staging harness, and whatever the harness declares must not be rendered in the base. Getting that pair out of step is what shipped 1.15.10 broken.

Upgrade notes

• Nothing to do beyond upgrading. If you are on 1.15.10 and an edge convergence has been failing with unknown "connection_upgrade" variable, this is why; the next convergence after upgrading succeeds on its own.