[Bug 2155160] Re: heat-api.conf references nonexistent WSGI script /usr/bin/heat-api

[Launchpad Bug Tracker]

This bug was fixed in the package heat - 1:26.0.0-0ubuntu2

---------------
heat (1:26.0.0-0ubuntu2) stonking; urgency=medium

  * d/heat-api.conf: Point WSGIScriptAlias at the installed
    heat-wsgi-api script. (LP: #2155160)
  * d/tests/heat-wsgi: Check that enabled Apache vhosts reference installed
    WSGI scripts.

 -- Guillaume Boutry <guillaume.boutry at canonical.com>  Fri, 05 Jun 2026
10:18:52 +0200

** Changed in: heat (Ubuntu Stonking)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/2155160

Title:
  heat-api.conf references nonexistent WSGI script /usr/bin/heat-api

Status in Ubuntu Cloud Archive flamingo series:
  New
Status in Ubuntu Cloud Archive gazpacho series:
  New
Status in heat package in Ubuntu:
  Fix Released
Status in heat source package in Questing:
  New
Status in heat source package in Resolute:
  New
Status in heat source package in Stonking:
  Fix Released

Bug description:
  Summary:

  When heat-api runs under Apache/mod_wsgi (heat ≥ 25.0.0), Apache is unable to start the heat-api vhost because the WSGI script path in debian/heat-api.conf is wrong. Every heat-api request returns a 500 error, and the Apache error log shows:
  "Target WSGI script not found or unable to stat: /usr/bin/heat-api"

  Root cause:

  The bug was introduced in heat 1:25.0.0~rc1-0ubuntu3 (questing, 2025-09-26) when the heat-api service was migrated from a systemd daemon to Apache/mod_wsgi. The new vhost file debian/heat-api.conf contains:
  "WSGIScriptAlias / /usr/bin/heat-api"

  However, no heat package installs /usr/bin/heat-api. The actual WSGI
  entry-point script, installed by python3-heat, is /usr/bin/heat-wsgi-
  api. The sibling vhost file debian/heat-api-cfn.conf is correct
  (/usr/bin/heat-wsgi-api-cfn), making this a straightforward typo in
  heat-api.conf.

  Reproduction:

  - Install heat-api on questing or resolute
  - a2ensite heat-api && systemctl restart apache2
  - curl -i http://localhost:8004/ -> HTTP 500
  - grep "heat-api" /var/log/apache2/heat_api_error.log -> Target WSGI script not found or unable to stat: /usr/bin/heat-api

  After applying the sed one-liner s|WSGIScriptAlias / /usr/bin/heat-
  api$|WSGIScriptAlias / /usr/bin/heat-wsgi-api| to the installed conf
  file and restarting apache2, the heat-api endpoint responds normally.

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