From 7d50d61f94507206670d277112d822a6f7fee108 Mon Sep 17 00:00:00 2001
From: laggardkernel <laggardkernel@gmail.com>
Date: Thu, 8 Apr 2021 14:14:45 +0800
Subject: [PATCH] Fix calling condition for Arbiter.log.reopen_files()

`GUNICORN_FD` is not always set in a `reexec`ed child process.
Considering `Arbiter.master_pid` is set after log reopening,
choose `GUNICORN_PID`.
---
 gunicorn/arbiter.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gunicorn/arbiter.py b/gunicorn/arbiter.py
index 24ec38744..fff0b7a57 100644
--- a/gunicorn/arbiter.py
+++ b/gunicorn/arbiter.py
@@ -93,7 +93,7 @@ def setup(self, app):
             self.log = self.cfg.logger_class(app.cfg)
 
         # reopen files
-        if 'GUNICORN_FD' in os.environ:
+        if 'GUNICORN_PID' in os.environ:
             self.log.reopen_files()
 
         self.worker_class = self.cfg.worker_class