updating broker and client setup

Author: hrasheed-msft

articles/hdinsight/kafka/apache-kafka-ssl-encryption-authentication.md

@@ -75,6 +75,7 @@ Use the following detailed instructions to complete the broker setup:
 1. Change to the CA machine and sign all of the received cert signing requests:
 
     ```bash
+    openssl req -new -newkey rsa:4096 -days 365 -x509 -subj "/CN=Kafka-Security-CA" -keyout ca-key -out ca-cert -nodes
     openssl x509 -req -CA ca-cert -CAkey ca-key -in wn0-cert-sign-request -out wn0-cert-signed -days 365 -CAcreateserial -passin pass:"MyServerPassword123"
     openssl x509 -req -CA ca-cert -CAkey ca-key -in wn1-cert-sign-request -out wn1-cert-signed -days 365 -CAcreateserial -passin pass:"MyServerPassword123"
     openssl x509 -req -CA ca-cert -CAkey ca-key -in wn2-cert-sign-request -out wn2-cert-signed -days 365 -CAcreateserial -passin pass:"MyServerPassword123"
@@ -122,31 +123,19 @@ To complete the configuration modification, do the following steps:
 
     ![Editing kafka ssl configuration properties in Ambari](./media/apache-kafka-ssl-encryption-authentication/editing-configuration-ambari2.png)
 
-1. Run the commands below which will add configuration properties to the Kafka `server.properties` file to advertise IP addresses instead of the Fully Qualified Domain Name (FQDN)..
+1. Under **Advanced kafka-env** add the following lines to the end of the **kafka-env template** property.
 
-    ```bash
-    IP_ADDRESS=$(hostname -i)
-    echo advertised.listeners=$IP_ADDRESS
-    sed -i.bak -e '/advertised/{/advertised@/!d;}' /usr/hdp/current/kafka-broker/conf/server.properties
-    echo "advertised.listeners=PLAINTEXT://$IP_ADDRESS:9092,SSL://$IP_ADDRESS:9093" >> /usr/hdp/current/kafka-broker/conf/server.properties
-    echo "ssl.keystore.location=/home/sshuser/ssl/kafka.server.keystore.jks" >> /usr/hdp/current/kafka-broker/conf/server.properties
-    echo "ssl.keystore.password=MyServerPassword123" >> /usr/hdp/current/kafka-broker/conf/server.properties
-    echo "ssl.key.password=MyServerPassword123" >> /usr/hdp/current/kafka-broker/conf/server.properties
-    echo "ssl.truststore.location=/home/sshuser/ssl/kafka.server.truststore.jks" >> /usr/hdp/current/kafka-broker/conf/server.properties
-    echo "ssl.truststore.password=MyServerPassword123" >> /usr/hdp/current/kafka-broker/conf/server.properties
-    ```
-
-1. To verify that the previous changes have been made correctly, you can optionally check that the following lines are present in the Kafka `server.properties` file.
-
-    ```bash
-    advertised.listeners=PLAINTEXT://10.0.0.11:9092,SSL://10.0.0.11:9093
+    ```config
+    # Needed to configure IP address advertising
     ssl.keystore.location=/home/sshuser/ssl/kafka.server.keystore.jks
     ssl.keystore.password=MyServerPassword123
     ssl.key.password=MyServerPassword123
     ssl.truststore.location=/home/sshuser/ssl/kafka.server.truststore.jks
     ssl.truststore.password=MyServerPassword123
     ```
 
+    ![Editing kafka-env template property in Ambari](./media/apache-kafka-ssl-encryption-authentication/editing-configuration-kafka-env.png)
+
 1. Restart all Kafka brokers.
 1. Start the admin client with producer and consumer options to verify that both producers and consumers are working on port 9093.