From b53d81b03cad73fac7f558d287db0354f0a46ec1 Mon Sep 17 00:00:00 2001
From: Matt Riedemann <mriedem.os@gmail.com>
Date: Sat, 3 Mar 2018 17:48:43 -0500
Subject: [PATCH] Deprecate running API services under eventlet

This sets the timer on removing support for running
API services under eventlet. Nova has supported running
under WSGI since Pike, and does run with Apache by default
in the gate.

Change-Id: I83d6c100d0d2628f38a029cffa22d0c2bc15d667
---
 nova/service.py                                              | 4 ++++
 .../notes/deprecate-api-eventlet-1a0279f1f2333082.yaml       | 5 +++++
 2 files changed, 9 insertions(+)
 create mode 100644 releasenotes/notes/deprecate-api-eventlet-1a0279f1f2333082.yaml

diff --git a/nova/service.py b/nova/service.py
index 37c5fdbdd9f2..260a1d66cf75 100644
--- a/nova/service.py
+++ b/nova/service.py
@@ -325,6 +325,10 @@ class WSGIService(service.Service):
         # NOTE(danms): Name can be metadata, osapi_compute, per
         # nova.service's enabled_apis
         self.binary = 'nova-%s' % name
+
+        LOG.warning('Running %s using eventlet is deprecated. Deploy with '
+                    'a WSGI server such as uwsgi or mod_wsgi.', self.binary)
+
         self.topic = None
         self.manager = self._get_manager()
         self.loader = loader or api_wsgi.Loader()
diff --git a/releasenotes/notes/deprecate-api-eventlet-1a0279f1f2333082.yaml b/releasenotes/notes/deprecate-api-eventlet-1a0279f1f2333082.yaml
new file mode 100644
index 000000000000..39b31acc18d4
--- /dev/null
+++ b/releasenotes/notes/deprecate-api-eventlet-1a0279f1f2333082.yaml
@@ -0,0 +1,5 @@
+---
+deprecations:
+  - |
+    Running API services (nova-osapi_compute or nova-metadata) with eventlet
+    is now deprecated. Deploy with a WSGI server such as uwsgi or mod_wsgi.