From b695b497b9b8e7351808848ab9e342219601742a Mon Sep 17 00:00:00 2001
From: Armin Berres <berres@m2p.net>
Date: Wed, 16 Dec 2020 11:05:27 +0100
Subject: [PATCH] Log a warning when a worker was terminated due to a signal

This happens for example when being OOM killed.

See #2215
---
 gunicorn/arbiter.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gunicorn/arbiter.py b/gunicorn/arbiter.py
index 7ca2f6b7..24ec3874 100644
--- a/gunicorn/arbiter.py
+++ b/gunicorn/arbiter.py
@@ -526,6 +526,12 @@ class Arbiter(object):
                     if exitcode == self.APP_LOAD_ERROR:
                         reason = "App failed to load."
                         raise HaltServer(reason, self.APP_LOAD_ERROR)
+                    if os.WIFSIGNALED(status):
+                        self.log.warning(
+                            "Worker with pid %s was terminated due to signal %s",
+                            wpid,
+                            os.WTERMSIG(status)
+                        )
 
                     worker = self.WORKERS.pop(wpid, None)
                     if not worker: