--- a/sentinel.conf
+++ b/sentinel.conf
@@ -20,6 +20,10 @@
 # The port that this sentinel instance will run on
 port 26379
 
+# Specify the log file name. Also the empty string can be used to force
+# Redis to log on the standard output.
+logfile /var/log/redis/sentinel.log
+
 # sentinel announce-ip <ip>
 # sentinel announce-port <port>
 #