Red Hat OpenShift Application Services Cheat Sheet
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About
The Red Hat OpenShift Application Services command-line interface (CLI) rhoas lets you manage OpenShift Streams for Apache Kafka from a terminal.
This cheat sheet covers the commands you need to:
- Manage and interact with Apache Kafka instances, topics, Consumer Groups, and Access Control Lists
- Manage and interact with your Service Registry instances
- Manage service accounts, which let you connect your applications to a Kafka instance
- Generate configuration files for the service context to connect with to be used with various tools and platforms
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Excerpt
Login commands
rhoas login
Log in to
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rhoas.
rhoas logout
Log out of rhoas.
Apache Kafka management
Manage and interact with Kafka instances, Kafka topics, Consumer Groups, and Access Control Lists (ACL). Each Kafka service includes a full Apache Kafka cluster, bootstrap servers, and the configurations needed to connect to producer and consumer services.
rhoas kafka create --name my-kafka-instance
Create a Kafka instance.
rhoas kafka describe --name my-kafka-instance
View configuration details of a Kafka instance.
rhoas kafka list
Update configuration details for a Kafka instance.
rhoas kafka describe --name my-kafka-instance.
Set the current Kafka instance.
rhoas kafka delete --name my-kafka-instance
Delete a Kafka instance.
Apache Kafka topic management
This section covers commands for managing Kafka topics in the current Kafka instance.
rhoas kafka topic list
List all topics.
rhoas kafka topic create --name my-topic
Create a Kafka topic.
rhoas kafka topic describe --name my-topic
Describe a Kafka topic.
rhoas kafka topic update --name my-topic --retention-ms -1
Update configuration details for a Kafka topic.
rhoas kafka topic consume --name my-topic --partition 0 --wait
Consume messages from a Kafka topic.
rhoas kafka topic produce --name my-topic --file="message.json"
Produce a new message to a Kafka topic.
rhoas kafka topic delete --name my-topic
Delete a Kafka topic.
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