Added example on using kafka UI and kafka connect with OCI OpenSearch

data-platform/open-source-data-platforms/oci-streaming-with-apache-kafka/README.md

@@ -18,11 +18,12 @@ Reviewed: 18.09.2025
 
 # Reusable Assets
 
+- [Kafka UI & Kafka Connect Setup with OCI OpenSearch](https://github.com/oracle-devrel/technology-engineering/tree/main/data-platform/open-source-data-platforms/oci-streaming-with-apache-kafka/code-examples/kafka-ui-connect-setup-with-oci-opensearch)
 
 # License
 
 Copyright (c) 2025 Oracle and/or its affiliates.
 
 Licensed under the Universal Permissive License (UPL), Version 1.0.
 
-See [LICENSE](https://github.com/oracle-devrel/technology-engineering/blob/main/LICENSE) for more details.
+See [LICENSE](https://github.com/oracle-devrel/technology-engineering/blob/main/LICENSE.txt) for more details.

data-platform/open-source-data-platforms/oci-streaming-with-apache-kafka/code-examples/kafka-ui-connect-setup-with-oci-opensearch/Kafka_Connect.md

@@ -0,0 +1,262 @@
+# Kafka UI & Kafka Connect Setup with OCI OpenSearch
+
+This guide documents how to set up **Kafka UI** and **Apache Kafka Connect** on an OCI instance, configure it to run as a service, and use the **OpenSearch Sink Connector** to stream Kafka topic data into an OCI OpenSearch index.
+
+---
+
+## 1. Prerequisites
+
+- Allow port 8080, 8083 in OCI security lists.
+    - Enable firewall within instance
+      * sudo firewall-cmd --permanent --add-port=8080/tcp
+      * sudo firewall-cmd --permanent --add-port=8083/tcp
+
+
+- install java-11-openjdk , jq, upzip, podman
+
+  * **Java (java-11-openjdk)** - required runtime for Kafka and Kafka Connect
+
+  * **unzip** - to extract connector plugin packages (e.g., OpenSearch sink)
+
+  * **jq** - command-line tool to pretty-print JSON responses from the Kafka Connect REST API
+
+  * **Podman** - container runtime used to run Kafka UI
+
+---
+
+## 2. Set Up Kafka UI using podman
+
+```bash
+podman run -d \
+  --name kafka-ui \
+  -p 8080:8080 \
+  -e DYNAMIC_CONFIG_ENABLED=true \
+  --restart=always \
+  docker.io/provectuslabs/kafka-ui
+```
+
+---
+
+## 3. Start Kafka UI
+
+```bash
+podman start kafka-ui
+```
+
+---
+
+## 4. Set Up Kafka Cluster through UI
+
+![Cluster Set Up](./images/kafkaui.png)
+
+
+## 5. Download and extract Kafka
+
+```bash
+curl -L -o kafka_2.13-3.7.0.tgz \
+  https://archive.apache.org/dist/kafka/3.7.0/kafka_2.13-3.7.0.tgz
+
+tar -xvzf kafka_2.13-3.7.0.tgz
+```
+
+---
+
+## 6. Set environment variables
+
+```bash
+echo 'export KAFKA_HOME=$HOME/kafka_2.13-3.7.0' >> ~/.bashrc
+echo 'export PATH=$KAFKA_HOME/bin:$PATH' >> ~/.bashrc
+source ~/.bashrc
+```
+
+---
+
+## 7. Create base folders
+
+```bash
+mkdir -p /home/opc/kafka/{logs,plugins}
+```
+
+- `logs/` → holds Kafka Connect worker logs  
+- `plugins/` → holds connector JARs (e.g., OpenSearch sink)
+
+---
+
+## 8. Configure Kafka Connect Worker
+
+Copy the default distributed properties file:
+
+```bash
+cp $KAFKA_HOME/config/connect-distributed.properties \
+   /home/opc/kafka/connect-distributed.properties
+nano /home/opc/kafka/connect-distributed.properties
+```
+
+Edit the following:
+
+```properties
+# Kafka Cluster
+bootstrap.servers=bootstrap-clstr-...:9092
+
+# Worker group
+group.id=connect-cluster
+
+# Security
+security.protocol=SASL_SSL
+sasl.mechanism=SCRAM-SHA-512
+sasl.jaas.config=org.apache.kafka.common.security.scram.ScramLoginModule required username="super-user-..." password="...";
+# Connect Internal Topics created through Console under Kafka Connect Configurations
+config.storage.topic=...-config
+offset.storage.topic=...-offset
+status.storage.topic=...-status
+# REST API
+rest.host.name=0.0.0.0
+rest.port=8083
+rest.advertised.host.name=<VM Public IP>
+
+# Plugins
+plugin.path=/home/opc/kafka/plugins
+```
+
+---
+
+## 9. Create Systemd Service
+
+Create `/etc/systemd/system/kafka-connect.service`:
+
+```ini
+[Unit]
+Description=Kafka Connect Distributed
+After=network.target
+
+[Service]
+User=opc
+Environment="KAFKA_HOME=/home/opc/kafka_2.13-3.7.0"
+ExecStart=/bin/bash -lc '/home/opc/kafka_2.13-3.7.0/bin/connect-distributed.sh /home/opc/kafka/connect-distributed.properties >> /home/opc/kafka/logs/connect.log 2>&1'
+Restart=always
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+```
+
+Reload and enable:
+
+```bash
+sudo systemctl daemon-reload
+sudo systemctl enable --now kafka-connect
+systemctl status kafka-connect --no-pager
+```
+
+---
+
+## 10. Add Kafka Connect Connection details in Kafka UI
+
+![Kafka Connect](./images/kafka_connect.png)
+
+---
+
+## 11. Install OpenSearch Sink Plugin
+
+```bash
+mkdir -p /home/opc/kafka/plugins/opensearch
+
+curl -fL -o /home/opc/opensearch-sink.zip \
+  "https://github.com/Aiven-Open/opensearch-connector-for-apache-kafka/releases/download/v3.1.1/opensearch-connector-for-apache-kafka-3.1.1.zip"
+
+unzip -o /home/opc/opensearch-sink.zip -d /home/opc/kafka/plugins/opensearch
+```
+
+Restart Kafka Connect:
+
+```bash
+sudo systemctl restart kafka-connect
+```
+
+Verify the connector is loaded:
+
+```bash
+curl http://localhost:8083/connector-plugins | jq .
+```
+
+---
+
+## 12. Create OpenSearch Sink Connector
+
+Example connector config (`test-opensearch`):
+
+```json
+{
+  "name": "test-opensearch",
+  "connector.class": "io.aiven.kafka.connect.opensearch.OpensearchSinkConnector",
+  "tasks.max": "1",
+  "topics": "connecter-test",
+
+  "connection.url": "https://<opensearch-endpoint>:9200",
+  "connection.username": "irine235",
+  "connection.password": "******",
+
+  "index": "${topic}",
+  "key.ignore": "true",
+  "schema.ignore": "true",
+
+  "key.converter": "org.apache.kafka.connect.json.JsonConverter",
+  "key.converter.schemas.enable": "false",
+  "value.converter": "org.apache.kafka.connect.json.JsonConverter",
+  "value.converter.schemas.enable": "false",
+
+  "errors.tolerance": "all",
+  "errors.log.enable": "true",
+
+  "consumer.override.security.protocol": "SASL_SSL",
+  "consumer.override.sasl.mechanism": "SCRAM-SHA-512",
+  "consumer.override.ssl.endpoint.identification.algorithm": "https",
+  "consumer.override.sasl.jaas.config": "org.apache.kafka.common.security.scram.ScramLoginModule required username=\"super-user-...\" password=\"...\";"
+}
+```
+
+Submit via Kafka UI
+
+---
+
+## 13. Produce Test Data
+
+Create topic connecter-test and /home/opc/kafka/client.properties with the following credentials:
+
+```bash
+security.protocol=SASL_SSL
+sasl.mechanism=SCRAM-SHA-512
+sasl.jaas.config=org.apache.kafka.common.security.scram.ScramLoginModule required username="super-user-..." password="...";
+```
+
+Produce message:
+
+```bash
+$KAFKA_HOME/bin/kafka-console-producer.sh \
+  --bootstrap-server bootstrap-clstr-...:9092 \
+  --producer.config /home/opc/kafka/client.properties \
+  --topic connecter-test
+```
+
+Enter messages:
+
+```json
+{"order_id":1,"customer":"Nora","total":49.99}
+{"order_id":2,"customer":"Sam","total":79.99}
+```
+
+---
+
+## 14. Verify in OpenSearch
+
+Check document count:
+
+```bash
+curl -u 'user:pass' "https://amaaaaaae....opensearch.eu-frankfurt-1.oci.oraclecloud.com:9200/connecter-test/_count?pretty"
+
+
+```
+
+---
+
+