Chapter 7. Template-based broker deployment examples

7.1. Deploying a basic broker with SSL

Deploy a basic broker that is ephemeral and supports SSL.

7.1.1. Deploying the image and template

Prerequisites

This tutorial builds upon Preparing a template-based broker deployment.
Completion of the Deploying a basic broker tutorial is recommended.

Procedure

Navigate to the OpenShift web console and log in.
Select the amq-demo project space.
Click Add to Project > Browse Catalog to list all of the default image streams and templates.
Use the Filter search bar to limit the list to those that match amq. You might need to click See all to show the desired application template.
Select the amq-broker-77-ssl template which is labeled Red Hat AMQ Broker 7.7 (Ephemeral, with SSL).

Set the following values in the configuration and click Create.

Table 7.1. Example template
Environment variable	Display Name	Value	Description
AMQ_PROTOCOL	AMQ Protocols	openwire,amqp,stomp,mqtt,hornetq	The protocols to be accepted by the broker
AMQ_QUEUES	Queues	demoQueue	Creates an anycast queue called demoQueue
AMQ_ADDRESSES	Addresses	demoTopic	Creates an address (or topic) called demoTopic. By default, this address has no assigned routing type.
AMQ_USER	AMQ Username	amq-demo-user	The username the client uses
AMQ_PASSWORD	AMQ Password	password	The password the client uses with the username
AMQ_TRUSTSTORE	Trust Store Filename	broker.ts	The SSL truststore file name
AMQ_TRUSTSTORE_PASSWORD	Truststore Password	password	The password used when creating the Truststore
AMQ_KEYSTORE	AMQ Keystore Filename	broker.ks	The SSL keystore file name
AMQ_KEYSTORE_PASSWORD	AMQ Keystore Password	password	The password used when creating the Keystore

7.1.2. Deploying the application

After creating the application, deploy it to create a Pod and start the broker.

Procedure

Click Deployments in the OpenShift Container Platform web console.
Click the broker-amq deployment.
Click Deploy to deploy the application.
Click the broker Pod and then click the Logs tab to verify the state of the broker.
If the broker logs have not loaded, and the Pod status shows ErrImagePull or ImagePullBackOff, your deployment configuration was not able to directly pull the specified broker image from the Red Hat Container Registry. In this case, edit your deployment configuration to reference the correct broker image name and the image pull secret name associated with the account used for authentication in the Red Hat Container Registry. Then, you can import the broker image and start the broker. To do this, complete steps similar to those in Deploying and starting the broker application.

7.1.3. Creating a Route

Create a Route for the broker so that clients outside of OpenShift Container Platform can connect using SSL. By default, the secured broker protocols are available through the 61617/TCP port. In addition, there are SSL and non-SSL ports exposed on the broker Pod for each messaging protocol that the broker supports. However, external client cannot connect directly to these ports on the broker. Instead, external clients connect to OpenShift via the Openshift router, which determines how to forward traffic to the appropriate port on the broker Pod.

Note

If you scale your deployment up to multiple brokers in a cluster, you must manually create a Service and a Route for each broker, and then use each Service-and-Route combination to direct a given client to a given broker, or broker list. For an example of configuring multiple Services and Routes to connect clustered brokers to their own instances of the AMQ Broker management console, see Creating Routes for the AMQ Broker management console.

Prerequisites

Before creating an SSL Route, you should understand how external clients use this Route to connect to the broker. For more information, see Creating an SSL Route.

Procedure

Click Services broker-amq-tcp-ssl.
Click Actions Create a route.
To display the TLS parameters, select the Secure route check box.
From the TLS Termination drop-down menu, choose Passthrough. This selection relays all communication to AMQ Broker without the OpenShift router decrypting and resending it.

To view the Route, click Routes. For example:

https://broker-amq-tcp-amq-demo.router.default.svc.cluster.local

This hostname will be used by external clients to connect to the broker using SSL with SNI.

Additional resources

For more information about creating SSL Routes, see Creating an SSL Route.
For more information on Routes in the OpenShift Container Platform, see Routes.

7.2. Deploying a basic broker with persistence and SSL

Deploy a persistent broker that supports SSL. When a broker needs persistence, the broker is deployed as a StatefulSet and stores messaging data on a persistent volume associated with the broker Pod via a persistent volume claim. When a broker Pod is created, it uses storage that remains in the event that you shut down the Pod, or if the Pod shuts down unexpectedly. This configuration means that messages are not lost, as they would be with a standard deployment.

Prerequisites

This tutorial builds upon Preparing a template-based broker deployment.
Completion of the Deploying a basic broker tutorial is recommended.
You must have sufficient persistent storage provisioned to your OpenShift cluster to associate with your broker Pod via a persistent volume claim. For more information, see Understanding persistent storage.

7.2.1. Deploy the image and template

Procedure

Navigate to the OpenShift web console and log in.
Select the amq-demo project space.
Click Add to Project Browse catalog to list all of the default image streams and templates.
Use the Filter search bar to limit the list to those that match amq. You might need to click See all to show the desired application template.
Select the amq-broker-77-persistence-ssl template, which is labelled Red Hat AMQ Broker 7.7 (Persistence, with SSL).

Set the following values in the configuration and click create.

Table 7.2. Example template
Environment variable	Display Name	Value	Description
AMQ_PROTOCOL	AMQ Protocols	openwire,amqp,stomp,mqtt,hornetq	The protocols to be accepted by the broker
AMQ_QUEUES	Queues	demoQueue	Creates an anycast queue called demoQueue
AMQ_ADDRESSES	Addresses	demoTopic	Creates an address (or topic) called demoTopic. By default, this address has no assigned routing type.
VOLUME_CAPACITY	AMQ Volume Size	1Gi	The persistent volume size created for the journal
AMQ_USER	AMQ Username	amq-demo-user	The username the client uses
AMQ_PASSWORD	AMQ Password	password	The password the client uses with the username
AMQ_TRUSTSTORE	Trust Store Filename	broker.ts	The SSL truststore file name
AMQ_TRUSTSTORE_PASSWORD	Truststore Password	password	The password used when creating the Truststore
AMQ_KEYSTORE	AMQ Keystore Filename	broker.ks	The SSL keystore file name
AMQ_KEYSTORE_PASSWORD	AMQ Keystore Password	password	The password used when creating the Keystore

7.2.2. Deploy the application

Once the application has been created it needs to be deployed. Deploying the application creates a Pod and starts the broker.

Procedure

Click Stateful Sets in the OpenShift Container Platform web console.
Click the broker-amq deployment.
Click Deploy to deploy the application.
Click the broker Pod and then click the Logs tab to verify the state of the broker. You should see the queue created via the template.
If the broker logs have not loaded, and the Pod status shows ErrImagePull or ImagePullBackOff, your configuration was not able to directly pull the specified broker image from the Red Hat Container Registry. In this case, edit your deployment configuration to reference the correct broker image name and the image pull secret name associated with the account used for authentication in the Red Hat Container Registry. Then, you can import the broker image and start the broker. To do this, complete steps similar to those in Deploying and starting the broker application.

Click the Terminal tab to access a shell where you can use the CLI to send some messages.

sh-4.2$ ./broker/bin/artemis producer --destination queue://demoQueue
Producer ActiveMQQueue[demoQueue], thread=0 Started to calculate elapsed time ...

Producer ActiveMQQueue[demoQueue], thread=0 Produced: 1000 messages
Producer ActiveMQQueue[demoQueue], thread=0 Elapsed time in second : 4 s
Producer ActiveMQQueue[demoQueue], thread=0 Elapsed time in milli second : 4584 milli seconds

sh-4.2$ ./broker/bin/artemis consumer  --destination queue://demoQueue
Consumer:: filter = null
Consumer ActiveMQQueue[demoQueue], thread=0 wait until 1000 messages are consumed
Received 1000
Consumer ActiveMQQueue[demoQueue], thread=0 Consumed: 1000 messages
Consumer ActiveMQQueue[demoQueue], thread=0 Consumer thread finished

Alternatively, use the OpenShift client to access the shell using the Pod name, as shown in the following example.

// Get the Pod names and internal IP Addresses
oc get pods -o wide

// Access a broker Pod by name
oc rsh <broker-pod-name>

Now scale down the broker using the oc command.
```
$ oc scale statefulset broker-amq --replicas=0
statefulset "broker-amq" scaled
```
You can use the console to check that the Pod count is 0

Now scale the broker back up to 1.

$ oc scale statefulset broker-amq --replicas=1
statefulset "broker-amq" scaled

Consume the messages again by using the terminal. For example:

sh-4.2$ broker/bin/artemis consumer --destination queue://demoQueue
Consumer:: filter = null
Consumer ActiveMQQueue[demoQueue], thread=0 wait until 1000 messages are consumed
Received 1000
Consumer ActiveMQQueue[demoQueue], thread=0 Consumed: 1000 messages
Consumer ActiveMQQueue[demoQueue], thread=0 Consumer thread finished

Additional resources

For more information on managing stateful applications, see StatefulSets (external).

7.2.3. Creating a Route

Create a Route for the broker so that clients outside of OpenShift Container Platform can connect using SSL. By default, the broker protocols are available through the 61617/TCP port.

Note

If you scale your deployment up to multiple brokers in a cluster, you must manually create a Service and a Route for each broker, and then use each Service-and-Route combination to direct a given client to a given broker, or broker list. For an example of configuring multiple Services and Routes to connect clustered brokers to their own instances of the AMQ Broker management console, see Creating Routes for the AMQ Broker management console.

Prerequisites

Before creating an SSL Route, you should understand how external clients use this Route to connect to the broker. For more information, see Creating an SSL Route.

Procedure

Click Services broker-amq-tcp-ssl.
Click Actions Create a route.
To display the TLS parameters, select the Secure route check box.
From the TLS Termination drop-down menu, choose Passthrough. This selection relays all communication to AMQ Broker without the OpenShift router decrypting and resending it.

To view the Route, click Routes. For example:

https://broker-amq-tcp-amq-demo.router.default.svc.cluster.local

This hostname will be used by external clients to connect to the broker using SSL with SNI.

Additional resources

For more information on Routes in the OpenShift Container Platform, see Routes.

7.3. Deploying a set of clustered brokers

Deploy a clustered set of brokers where each broker runs in its own Pod.

7.3.1. Distributing messages

Message distribution is configured to use ON_DEMAND. This means that when messages arrive at a clustered broker, the messages are distributed in a round-robin fashion to any broker that has consumers.

This message distribution policy safeguards against messages getting stuck on a specific broker while a consumer, connected either directly or through the OpenShift router, is connected to a different broker.

The redistribution delay is zero by default. If a message is on a queue that has no consumers, it will be redistributed to another broker.

Note

When redistribution is enabled, messages can be delivered out of order.

7.3.2. Deploy the image and template

Prerequisites

This procedure builds upon Preparing a template-based broker deployment.
Completion of the Deploying a basic broker tutorial is recommended.

Procedure

Navigate to the OpenShift web console and log in.
Select the amq-demo project space.
Click Add to Project > Browse catalog to list all of the default image streams and templates
Use the Filter search bar to limit the list to those that match amq. Click See all to show the desired application template.
Select the amq-broker-77-persistence-clustered template which is labeled Red Hat AMQ Broker 7.7 (no SSL, clustered).

Set the following values in the configuration and click create.

Table 7.3. Example template
Environment variable	Display Name	Value	Description
AMQ_PROTOCOL	AMQ Protocols	openwire,amqp,stomp,mqtt,hornetq	The protocols to be accepted by the broker
AMQ_QUEUES	Queues	demoQueue	Creates an anycast queue called demoQueue
AMQ_ADDRESSES	Addresses	demoTopic	Creates an address (or topic) called demoTopic. By default, this address has no assigned routing type.
VOLUME_CAPACITY	AMQ Volume Size	1Gi	The persistent volume size created for the journal
AMQ_CLUSTERED	Clustered	true	This needs to be true to ensure the brokers cluster
AMQ_CLUSTER_USER	cluster user	generated	The username the brokers use to connect with each other
AMQ_CLUSTER_PASSWORD	cluster password	generated	The password the brokers use to connect with each other
AMQ_USER	AMQ Username	amq-demo-user	The username the client uses
AMQ_PASSWORD	AMQ Password	password	The password the client uses with the username

7.3.3. Deploying the application

Once the application has been created it needs to be deployed. Deploying the application creates a Pod and starts the broker.

Procedure

Click Stateful Sets in the OpenShift Container Platform web console.
Click the broker-amq deployment.
Click Deploy to deploy the application.
Note
The default number of replicas for a clustered template is 0. You should not see any Pods.

Scale up the Pods to three to create a cluster of brokers.

$ oc scale statefulset broker-amq --replicas=3
statefulset "broker-amq" scaled

Check that there are three Pods running.

$ oc get pods
NAME           READY     STATUS    RESTARTS   AGE
broker-amq-0   1/1       Running   0          33m
broker-amq-1   1/1       Running   0          33m
broker-amq-2   1/1       Running   0          29m

If the Pod status shows ErrImagePull or ImagePullBackOff, your deployment was not able to directly pull the specified broker image from the Red Hat Container Registry. In this case, edit your Stateful Set to reference the correct broker image name and the image pull secret name associated with the account used for authentication in the Red Hat Container Registry. Then, you can import the broker image and start the brokers. To do this, complete steps similar to those in Deploying and starting the broker application.

Verify that the brokers have clustered with the new Pod by checking the logs.

$ oc logs broker-amq-2

This shows the logs of the new broker and an entry for a clustered bridge created between the brokers:

2018-08-29 07:43:55,779 INFO  [org.apache.activemq.artemis.core.server] AMQ221027: Bridge ClusterConnectionBridge@1b0e9e9d [name=$.artemis.internal.sf.my-cluster.4333c830-ab5f-11e8-afb8-0a580a82006e, queue=QueueImpl[name=$.artemis.internal.sf.my-cluster.4333c830-ab5f-11e8-afb8-0a580a82006e, postOffice=PostOfficeImpl [server=ActiveMQServerImpl::serverUUID=9cedb69d-ab5e-11e8-87a4-0a580a82006c], temp=false]@5e0c0398 targetConnector=ServerLocatorImpl (identity=(Cluster-connection-bridge::ClusterConnectionBridge@1b0e9e9d [name=$.artemis.internal.sf.my-cluster.4333c830-ab5f-11e8-afb8-0a580a82006e, queue=QueueImpl[name=$.artemis.internal.sf.my-cluster.4333c830-ab5f-11e8-afb8-0a580a82006e, postOffice=PostOfficeImpl [server=ActiveMQServerImpl::serverUUID=9cedb69d-ab5e-11e8-87a4-0a580a82006c], temp=false]@5e0c0398 targetConnector=ServerLocatorImpl [initialConnectors=[TransportConfiguration(name=artemis, factory=org-apache-activemq-artemis-core-remoting-impl-netty-NettyConnectorFactory) ?port=61616&host=10-130-0-110], discoveryGroupConfiguration=null]]::ClusterConnectionImpl@806813022[nodeUUID=9cedb69d-ab5e-11e8-87a4-0a580a82006c, connector=TransportConfiguration(name=artemis, factory=org-apache-activemq-artemis-core-remoting-impl-netty-NettyConnectorFactory) ?port=61616&host=10-130-0-108, address=, server=ActiveMQServerImpl::serverUUID=9cedb69d-ab5e-11e8-87a4-0a580a82006c])) [initialConnectors=[TransportConfiguration(name=artemis, factory=org-apache-activemq-artemis-core-remoting-impl-netty-NettyConnectorFactory) ?port=61616&host=10-130-0-110], discoveryGroupConfiguration=null]] is connected

7.3.4. Creating Routes for the AMQ Broker management console

The clustering templates do not expose the AMQ Broker management console by default. This is because the OpenShift proxy performs load balancing across each broker in the cluster and it would not be possible to control which broker console is connected at a given time.

The following example procedure shows how to configure each broker in the cluster to connect to its own management console instance. You do this by creating a dedicated Service-and-Route combination for each broker Pod in the cluster.

Prerequisites

You have already deployed a clustered set of brokers, where each broker runs in its own Pod. See Deploying a set of clustered brokers.

Procedure

Create a regular Service for each Pod in the cluster, using a StatefulSet selector to select between Pods. To do this, deploy a Service template, in .yaml format, that looks like the following:
```
apiVersion: v1
kind: Service
metadata:
  annotations:
    description: 'Service for the management console of broker pod XXXX'
  labels:
    app: application2
    application: application2
    template: amq-broker-77-persistence-clustered
  name: amq2-amq-console-XXXX
  namespace: amq75-p-c-ssl-2
spec:
  ports:
    - name: console-jolokia
      port: 8161
      protocol: TCP
      targetPort: 8161
  selector:
    deploymentConfig: application2-amq
    statefulset.kubernetes.io/pod-name: application2-amq-XXXX
  type: ClusterIP
```
In the preceding template, replace XXXX with the ordinal value of the broker Pod you want to associate with the Service. For example, to associate the Service with the first Pod in the cluster, set XXXX to 0. To associate the Service with the second Pod, set XXXX to 1, and so on.
Save and deploy an instance of the template for each broker Pod in your cluster.
Note
In the example template shown above, the selector uses the Kubernetes-defined Pod name.
Create a Route for each broker Pod, so that the AMQ Broker management console can connect to the Pod.
Click Routes Create Route.
The Edit Route page opens.
1. In the Services drop-down menu, select the previously created broker Service that you want to associate the Route with, for example, amq2-amq-console-0.
2. Set Target Port to 8161, to enable access for the AMQ Broker management console.
3. To display the TLS parameters, select the Secure route check box.
  1. From the TLS Termination drop-down menu, choose Passthrough.
    This selection relays all communication to AMQ Broker without the OpenShift router decrypting and resending it.
4. Click Create.
  When you create a Route associated with one of broker Pods, the resulting .yaml file includes lines that look like the following:
```
spec:
  host: amq2-amq-console-0-amq75-p-c-2.apps-ocp311.example.com
  port:
    targetPort: console-jolokia
  tls:
    termination: passthrough
  to:
    kind: Service
    name: amq2-amq-console-0
    weight: 100
  wildcardPolicy: None
```
To access the management console for a specific broker instance, copy the host URL shown above to a web browser.

Additional resources

For more information on the clustering of brokers see Configuring message redistribution.

7.4. Deploying a set of clustered SSL brokers

Deploy a clustered set of brokers, where each broker runs in its own Pod and the broker is configured to accept connections using SSL.

7.4.1. Distributing messages

Message distribution is configured to use ON_DEMAND. This means that when messages arrive at a clustered broker, the messages are distributed in a round-robin fashion to any broker that has consumers.

This message distribution policy safeguards against messages getting stuck on a specific broker while a consumer, connected either directly or through the OpenShift router, is connected to a different broker.

The redistribution delay is non-zero by default. If a message is on a queue that has no consumers, it will be redistributed to another broker.

Note

When redistribution is enabled, messages can be delivered out of order.

7.4.2. Deploying the image and template

Prerequisites

This procedure builds upon Preparing a template-based broker deployment.
Completion of the Deploying a basic broker example is recommended.

Procedure

Navigate to the OpenShift web console and log in.
Select the amq-demo project space.
Click Add to Project > Browse catalog to list all of the default image streams and templates.
Use the Filter search bar to limit the list to those that match amq. Click See all to show the desired application template.
Select the amq-broker-77-persistence-clustered-ssl template which is labeled Red Hat AMQ Broker 7.7 (SSL, clustered).

Set the following values in the configuration and click create.

Table 7.4. Example template
Environment variable	Display Name	Value	Description
AMQ_PROTOCOL	AMQ Protocols	openwire,amqp,stomp,mqtt,hornetq	The protocols to be accepted by the broker
AMQ_QUEUES	Queues	demoQueue	Creates an anycast queue called demoQueue
AMQ_ADDRESSES	Addresses	demoTopic	Creates an address (or topic) called demoTopic. By default, this address has no assigned routing type.
VOLUME_CAPACITY	AMQ Volume Size	1Gi	The persistent volume size created for the journal
AMQ_CLUSTERED	Clustered	true	This needs to be true to ensure the brokers cluster
AMQ_CLUSTER_USER	cluster user	generated	The username the brokers use to connect with each other
AMQ_CLUSTER_PASSWORD	cluster password	generated	The password the brokers use to connect with each other
AMQ_USER	AMQ Username	amq-demo-user	The username the client uses
AMQ_PASSWORD	AMQ Password	password	The password the client uses with the username
AMQ_TRUSTSTORE	Trust Store Filename	broker.ts	The SSL truststore file name
AMQ_TRUSTSTORE_PASSWORD	Truststore Password	password	The password used when creating the Truststore
AMQ_KEYSTORE	AMQ Keystore Filename	broker.ks	The SSL keystore file name
AMQ_KEYSTORE_PASSWORD	AMQ Keystore Password	password	The password used when creating the Keystore

7.4.3. Deploying the application

Deploy after creating the application. Deploying the application creates a Pod and starts the broker.

Procedure

Click Stateful Sets in the OpenShift Container Platform web console.
Click the broker-amq deployment.
Click Deploy to deploy the application.
Note
The default number of replicas for a clustered template is 0, so you will not see any Pods.

Scale up the Pods to three to create a cluster of brokers.

$ oc scale statefulset broker-amq --replicas=3
statefulset "broker-amq" scaled

Check that there are three Pods running.

$ oc get pods
NAME           READY     STATUS    RESTARTS   AGE
broker-amq-0   1/1       Running   0          33m
broker-amq-1   1/1       Running   0          33m
broker-amq-2   1/1       Running   0          29m

If the Pod status shows ErrImagePull or ImagePullBackOff, your deployment was not able to directly pull the specified broker image from the Red Hat Container Registry. In this case, edit your Stateful Set to reference the correct broker image name and the image pull secret name associated with the account used for authentication in the Red Hat Container Registry. Then, you can import the broker image and start the brokers. To do this, complete steps similar to those in Deploy and start the broker application.

Verify the brokers have clustered with the new Pod by checking the logs.

$ oc logs broker-amq-2

This shows all the logs of the new broker and an entry for a clustered bridge created between the brokers, for example:

2018-08-29 07:43:55,779 INFO  [org.apache.activemq.artemis.core.server] AMQ221027: Bridge ClusterConnectionBridge@1b0e9e9d [name=$.artemis.internal.sf.my-cluster.4333c830-ab5f-11e8-afb8-0a580a82006e, queue=QueueImpl[name=$.artemis.internal.sf.my-cluster.4333c830-ab5f-11e8-afb8-0a580a82006e, postOffice=PostOfficeImpl [server=ActiveMQServerImpl::serverUUID=9cedb69d-ab5e-11e8-87a4-0a580a82006c], temp=false]@5e0c0398 targetConnector=ServerLocatorImpl (identity=(Cluster-connection-bridge::ClusterConnectionBridge@1b0e9e9d [name=$.artemis.internal.sf.my-cluster.4333c830-ab5f-11e8-afb8-0a580a82006e, queue=QueueImpl[name=$.artemis.internal.sf.my-cluster.4333c830-ab5f-11e8-afb8-0a580a82006e, postOffice=PostOfficeImpl [server=ActiveMQServerImpl::serverUUID=9cedb69d-ab5e-11e8-87a4-0a580a82006c], temp=false]@5e0c0398 targetConnector=ServerLocatorImpl [initialConnectors=[TransportConfiguration(name=artemis, factory=org-apache-activemq-artemis-core-remoting-impl-netty-NettyConnectorFactory) ?port=61616&host=10-130-0-110], discoveryGroupConfiguration=null]]::ClusterConnectionImpl@806813022[nodeUUID=9cedb69d-ab5e-11e8-87a4-0a580a82006c, connector=TransportConfiguration(name=artemis, factory=org-apache-activemq-artemis-core-remoting-impl-netty-NettyConnectorFactory) ?port=61616&host=10-130-0-108, address=, server=ActiveMQServerImpl::serverUUID=9cedb69d-ab5e-11e8-87a4-0a580a82006c])) [initialConnectors=[TransportConfiguration(name=artemis, factory=org-apache-activemq-artemis-core-remoting-impl-netty-NettyConnectorFactory) ?port=61616&host=10-130-0-110], discoveryGroupConfiguration=null]] is connected

Additional resources

To learn how to configure each broker in the cluster to connect to its own management console instance, see Creating Routes for the AMQ Broker management console.
For more information about messaging in a broker cluster, see Enabling Message Redistribution.

7.5. Deploying a broker with custom configuration

Deploy a broker with custom configuration. Although functionality can be obtained by using templates, broker configuration can be customized if needed.

Prerequisites

This tutorial builds upon Preparing a template-based broker deployment.
Completion of the Deploying a basic broker tutorial is recommended.

7.5.1. Deploy the image and template

Procedure

Navigate to the OpenShift web console and log in.
Select the amq-demo project space.
Click Add to Project > Browse catalog to list all of the default image streams and templates.
Use the Filter search bar to limit results to those that match amq. Click See all to show the desired application template.
Select the amq-broker-77-custom template which is labeled Red Hat AMQ Broker 7.7(Ephemeral, no SSL).
In the configuration, update broker.xml with the custom configuration you would like to use. Click Create.
Note
Use a text editor to create the broker’s XML configuration. Then, cut and paste confguration details into the broker.xml field.
Note
OpenShift Container Platform does not use a ConfigMap object to store the custom configuration that you specify in the broker.xml field, as is common for many applications deployed on this platform. Instead, OpenShift temporarily stores the specified configuration in an environment variable, before transferring the configuration to a standalone file when the broker container starts.

7.5.2. Deploy the application

Once the application has been created it needs to be deployed. Deploying the application creates a Pod and starts the broker.

Procedure

Click Deployments in the OpenShift Container Platform web console.
Click the broker-amq deployment
Click Deploy to deploy the application.

7.6. Basic SSL client example

Implement a client that sends and receives messages from a broker configured to use SSL, using the Qpid JMS client.

Prerequisites

This tutorial builds upon Preparing a template-based broker deployment.
Completion of the Deploying a basic broker with SSL tutorial is recommended.
AMQ JMS Examples

7.6.1. Configuring the client

Create a sample client that can be updated to connect to the SSL broker. The following procedure builds upon AMQ JMS Examples.

Procedure

Add an entry into your /etc/hosts file to map the route name onto the IP address of the OpenShift cluster:
```
10.0.0.1 broker-amq-tcp-amq-demo.router.default.svc.cluster.local
```

Update the jndi.properties configuration file to use the route, truststore and keystore created previously, for example:

connectionfactory.myFactoryLookup = amqps://broker-amq-tcp-amq-demo.router.default.svc.cluster.local:8443?transport.keyStoreLocation=<keystore-path>client.ks&transport.keyStorePassword=password&transport.trustStoreLocation=<truststore-path>/client.ts&transport.trustStorePassword=password&transport.verifyHost=false

Update the jndi.properties configuration file to use the queue created earlier.
```
queue.myDestinationLookup = demoQueue
```
Execute the sender client to send a text message.
Execute the receiver client to receive the text message. You should see:
```
Received message: Message Text!
```

7.7. External clients using sub-domains example

Expose a clustered set of brokers through a node port and connect to it using the core JMS client. This enables clients to connect to a set of brokers which are configured using the amq-broker-77-persistence-clustered-ssl template.

7.7.1. Exposing the brokers

Configure the brokers so that the cluster of brokers are externally available and can be connected to directly, bypassing the OpenShift router. This is done by creating a route that exposes each pod using its own hostname.

Prerequisites

Deploying a set of clustered brokers

Procedure

Choose import YAML/JSON from Add to Project drop down

Enter the following and click create.

apiVersion: v1
kind: Route
metadata:
  labels:
    app: broker-amq
    application: broker-amq
  name: tcp-ssl
spec:
  port:
    targetPort: ow-multi-ssl
  tls:
    termination: passthrough
  to:
    kind: Service
    name: broker-amq-headless
    weight: 100
  wildcardPolicy: Subdomain
  host: star.broker-ssl-amq-headless.amq-demo.svc

Note

The important configuration here is the wildcard policy of Subdomain. This allows each broker to be accessible through its own hostname.

7.7.2. Connecting the clients

Create a sample client that can be updated to connect to the SSL broker. The steps in this procedure build upon the AMQ JMS Examples.

Procedure

Add entries into the /etc/hosts file to map the route name onto the actual IP addresses of the brokers:

10.0.0.1 broker-amq-0.broker-ssl-amq-headless.amq-demo.svc broker-amq-1.broker-ssl-amq-headless.amq-demo.svc broker-amq-2.broker-ssl-amq-headless.amq-demo.svc

Update the jndi.properties configuration file to use the route, truststore, and keystore created previously, for example:

connectionfactory.myFactoryLookup = amqps://broker-amq-0.broker-ssl-amq-headless.amq-demo.svc:443?transport.keyStoreLocation=/home/ataylor/projects/jboss-amq-7-broker-openshift-image/client.ks&transport.keyStorePassword=password&transport.trustStoreLocation=/home/ataylor/projects/jboss-amq-7-broker-openshift-image/client.ts&transport.trustStorePassword=password&transport.verifyHost=false

Update the jndi.properties configuration file to use the queue created earlier.
```
queue.myDestinationLookup = demoQueue
```
Execute the sender client code to send a text message.
Execute the receiver client code to receive the text message. You should see:
```
Received message: Message Text!
```

Additional resources

For more information on using the AMQ JMS client, see AMQ JMS Examples.

7.8. External clients using port binding example

Expose a clustered set of brokers through a NodePort and connect to it using the core JMS client. This enables clients that do not support SNI or SSL. It is used with clusters configured using the amq-broker-77-persistence-clustered template.

7.8.1. Exposing the brokers

Configure the brokers so that the cluster of brokers are externally available and can be connected to directly, bypassing the OpenShift router. This is done by creating a service that uses a NodePort to load balance around the clusters.

Prerequisites

Deploying a set of clustered brokers

Procedure

Choose import YAML/JSON from Add to Project drop down.

Enter the following and click create.

apiVersion: v1
kind: Service
metadata:
  annotations:
    description: The broker's OpenWire port.
    service.alpha.openshift.io/dependencies: >-
      [{"name": "broker-amq-amqp", "kind": "Service"},{"name":
      "broker-amq-mqtt", "kind": "Service"},{"name": "broker-amq-stomp", "kind":
      "Service"}]
  creationTimestamp: '2018-08-29T14:46:33Z'
  labels:
    application: broker
    template: amq-broker-77-statefulset-clustered
  name: broker-external-tcp
  namespace: amq-demo
  resourceVersion: '2450312'
  selfLink: /api/v1/namespaces/amq-demo/services/broker-amq-tcp
  uid: 52631fa0-ab9a-11e8-9380-c280f77be0d0
spec:
  externalTrafficPolicy: Cluster
  ports:
   -  nodePort: 30001
      port: 61616
      protocol: TCP
      targetPort: 61616
  selector:
    deploymentConfig: broker-amq
  sessionAffinity: None
  type: NodePort
status:
  loadBalancer: {}

Note

The NodePort configuration is important. The NodePort is the port in which the client will access the brokers and the type is NodePort.

7.8.2. Connecting the clients

Create consumers that are round-robinned around the brokers in the cluster using the AMQ broker CLI.

Procedure

In a terminal create a consumer and attach it to the IP address where OpenShift is running.

artemis consumer --url tcp://<IP_ADDRESS>:30001 --message-count 100 --destination queue://demoQueue

Repeat step 1 twice to start another two consumers.
Note
You should now have three consumers load balanced across the three brokers.

Create a producer to send messages.

artemis producer --url tcp://<IP_ADDRESS>:30001 --message-count 300 --destination queue://demoQueue

Verify each consumer receives messages.

Consumer:: filter = null
Consumer ActiveMQQueue[demoQueue], thread=0 wait until 100 messages are consumed
Consumer ActiveMQQueue[demoQueue], thread=0 Consumed: 100 messages
Consumer ActiveMQQueue[demoQueue], thread=0 Consumer thread finished

이 콘텐츠는 선택한 언어로 제공되지 않습니다.

Chapter 7. Template-based broker deployment examples

7.1. Deploying a basic broker with SSL

7.1.1. Deploying the image and template

7.1.2. Deploying the application

7.1.3. Creating a Route

7.2. Deploying a basic broker with persistence and SSL

7.2.1. Deploy the image and template

7.2.2. Deploy the application

7.2.3. Creating a Route

7.3. Deploying a set of clustered brokers

7.3.1. Distributing messages

7.3.2. Deploy the image and template

7.3.3. Deploying the application

7.3.4. Creating Routes for the AMQ Broker management console

7.4. Deploying a set of clustered SSL brokers

7.4.1. Distributing messages

7.4.2. Deploying the image and template

7.4.3. Deploying the application

7.5. Deploying a broker with custom configuration

7.5.1. Deploy the image and template

7.5.2. Deploy the application

7.6. Basic SSL client example

7.6.1. Configuring the client

7.7. External clients using sub-domains example

7.7.1. Exposing the brokers

7.7.2. Connecting the clients

7.8. External clients using port binding example

7.8.1. Exposing the brokers

7.8.2. Connecting the clients

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