Add flink-runtime-web dependency in pom.xml file
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-runtime-web</artifactId>
<version>1.16.1</version>
<scope>provided</scope>
</dependency>
Add the rest.port item to the configuration passed in when the execution environment is initialized
public static void main(String[] args) throws Exception { //
Get Flink's operating environment
Configuration conf = new Configuration(); conf.setInteger(RestOptions.PORT , 0);//Set to 0 and the port will not be activated every time You can also set a fixed port such as 8081 StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment ( conf); //checkpoint configuration env.enableCheckpointing(5000); env.getCheckpointConfig().setCheckpointingMode(CheckpointingMode.EXACTLY_ONCE ) ; env.get CheckpointConfig(). setMinPauseBetweenCheckpoints(500); env.getCheckpointConfig().setCheckpointTimeout(60000); env.getCheckpointConfig().setMaxConcurrentCheckpoints(1);
After starting, you can see the web ui link in the log:
15:26:07.833 [main] INFO org.apache.flink.runtime.dispatcher.DispatcherRestEndpoint - Web frontend listening at http://localhost:40673.15:26:07.833 [mini-cluster-io-thread-1] INFO org.apache.flink.runtime.dispatcher.DispatcherRestEndpoint - http://localhost:40673 was granted leadership with leaderSessionID=f08dd1d9-359f-4403-84af-79d2e7e41c9b15:26:07.834 [mini-cluster-io-thread-1] INFO org.apache.flink.runtime.highavailability.nonha.embedded.EmbeddedLeaderService - Received confirmation of leadership for leader http://localhost:40673 , session=f08dd1d9-359f-4403-84af-79d2e7e41c9b15:26:07.843 [main] INFO org.apache.flink.runtime.highavailability.nonha.embedded.EmbeddedLeaderService - Proposing leadership to contender LeaderContender: DefaultDispatcherRunner15:26:07.844 [main] INFO org.apache.flink.runtime.resourcemanager.ResourceManagerServiceImpl - Starting resource manager service.15:26:07.844 [main] INFO org.apache.flink.runtime.highavailability.nonha.embedded.EmbeddedLeaderService - Proposing leadership to contender LeaderContender: ResourceManagerServiceImpl15:26:07.844 [mini-cluster-io-thread-2] INFO org.apache.flink.runtime.dispatcher.runner.DefaultDispatcherRunner - DefaultDispatcherRunner was granted leadership with leader id 07b5356f-c8c9-4b20-99b0-7491f48c89b4. Creating new DispatcherLeaderProcess.15:26:07.845 [pool-3-thread-1] INFO
Visit the corresponding link in the browser to see the web ui
Flink 1.16.1 pro-test is available, previous versions may also need to use
Configurationconf=newConfiguration();
env = StreamExecutionEnvironment.createLocalEnvironmentWithWebUI(conf);However, the code needs to be changed when publishing and running in this way. In the code of 1.16.1, look at the createLocalEnvironmentWithWebUI method:
What I do is nothing more than adding a rest.port to the configuration item.
So just set this parameter directly when calling getExecutionEnvironment (conf), and you don't need to modify the code when you need to publish the runtime.