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-rw-r--r--system/kafka/README10
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diff --git a/system/kafka/README b/system/kafka/README
index c435258289..4debc23d4c 100644
--- a/system/kafka/README
+++ b/system/kafka/README
@@ -22,3 +22,13 @@ Durable
Distributed by Design
Kafka has a modern cluster-centric design that offers
strong durability and fault-tolerance guarantees.
+
+
+Groupname and username
+
+You must have the 'kafka' group and user to run this script,
+for example:
+
+ groupadd -g 323 kafka
+ useradd -u 323 -g 323 -c "Apache Kafka user" -d /var/lib/kafka \
+ -s /bin/sh kafka