运行 ./bin/start-cluster.sh
jps只启动了：TaskManagerRunner

看日志：

2020-05-07 13:44:36,095 INFO  org.apache.flink.runtime.blob.BlobServer                      - Stopped BLOB server at 0.0.0.0:34077
2020-05-07 13:44:36,096 INFO  org.apache.flink.runtime.blob.TransientBlobCache              - Shutting down BLOB cache
2020-05-07 13:44:36,102 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcService              - Stopping Akka RPC service.
2020-05-07 13:44:36,106 INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator         - Shutting down remote daemon.
2020-05-07 13:44:36,107 INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator         - Remote daemon shut down; proceeding with flushing remote transports.
2020-05-07 13:44:36,108 INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator         - Shutting down remote daemon.
2020-05-07 13:44:36,109 INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator         - Remote daemon shut down; proceeding with flushing remote transports.
2020-05-07 13:44:36,125 INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator         - Remoting shut down.
2020-05-07 13:44:36,125 INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator         - Remoting shut down.
2020-05-07 13:44:36,150 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcService              - Stopped Akka RPC service.
2020-05-07 13:44:36,151 ERROR org.apache.flink.runtime.entrypoint.ClusterEntrypoint         - Could not start cluster entrypoint StandaloneSessionClusterEntrypoint.
org.apache.flink.runtime.entrypoint.ClusterEntrypointException: Failed to initialize the cluster entrypoint StandaloneSessionClusterEntrypoint.
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:181)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runClusterEntrypoint(ClusterEntrypoint.java:517)
	at org.apache.flink.runtime.entrypoint.StandaloneSessionClusterEntrypoint.main(StandaloneSessionClusterEntrypoint.java:65)
Caused by: org.apache.flink.util.FlinkException: Could not create the DispatcherResourceManagerComponent.
	at org.apache.flink.runtime.entrypoint.component.AbstractDispatcherResourceManagerComponentFactory.create(AbstractDispatcherResourceManagerComponentFactory.java:242)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runCluster(ClusterEntrypoint.java:215)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.lambda$startCluster$0(ClusterEntrypoint.java:163)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1924)
	at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:162)
	... 2 more
Caused by: java.net.BindException: 地址已在使用
	at sun.nio.ch.Net.bind0(Native Method)
	at sun.nio.ch.Net.bind(Net.java:433)
	at sun.nio.ch.Net.bind(Net.java:425)
	at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
	at org.apache.flink.shaded.netty4.io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:128)
	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:558)
	at org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1358)
	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:501)
	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:486)
	at org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:1019)
	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel.bind(AbstractChannel.java:254)
	at org.apache.flink.shaded.netty4.io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:366)
	at org.apache.flink.shaded.netty4.io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
	at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
	at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463)
	at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at java.lang.Thread.run(Thread.java:748)
[root@moonright log]# clear
[root@moonright log]# cat flink-root-standalonesession-0-moonright.log
2020-05-07 13:44:34,675 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         - --------------------------------------------------------------------------------
2020-05-07 13:44:34,676 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -  Starting StandaloneSessionClusterEntrypoint (Version: 1.7.0, Rev:<unknown>, Date:<unknown>)
2020-05-07 13:44:34,676 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -  OS current user: root
2020-05-07 13:44:34,886 WARN  org.apache.hadoop.util.NativeCodeLoader                       - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
2020-05-07 13:44:35,022 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -  Current Hadoop/Kerberos user: root
2020-05-07 13:44:35,023 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -  JVM: Java HotSpot(TM) 64-Bit Server VM - Oracle Corporation - 1.8/25.181-b13
2020-05-07 13:44:35,023 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -  Maximum heap size: 981 MiBytes
2020-05-07 13:44:35,023 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -  JAVA_HOME: /usr/local/java/javajdk
2020-05-07 13:44:35,026 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -  Hadoop version: 2.6.0-cdh5.15.1
2020-05-07 13:44:35,026 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -  JVM Options:
2020-05-07 13:44:35,026 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -     -Xms1024m
2020-05-07 13:44:35,026 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -     -Xmx1024m
2020-05-07 13:44:35,026 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -     -Dlog.file=/dxhstorm/flink/flink-1.7.0/log/flink-root-standalonesession-0-moonright.log
2020-05-07 13:44:35,026 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -     -Dlog4j.configuration=file:/dxhstorm/flink/flink-1.7.0/conf/log4j.properties
2020-05-07 13:44:35,027 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -     -Dlogback.configurationFile=file:/dxhstorm/flink/flink-1.7.0/conf/logback.xml
2020-05-07 13:44:35,027 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -  Program Arguments:
2020-05-07 13:44:35,027 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -     --configDir
2020-05-07 13:44:35,027 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -     /dxhstorm/flink/flink-1.7.0/conf
2020-05-07 13:44:35,027 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -     --executionMode
2020-05-07 13:44:35,027 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -     cluster
2020-05-07 13:44:35,027 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         -  Classpath: /dxhstorm/flink/flink-1.7.0/lib/flink-python_2.11-1.7.0.jar:/dxhstorm/flink/flink-1.7.0/lib/flink-shaded-hadoop2-uber-1.7.0.jar:/dxhstorm/flink/flink-1.7.0/lib/log4j-1.2.17.jar:/dxhstorm/flink/flink-1.7.0/lib/slf4j-log4j12-1.7.15.jar:/dxhstorm/flink/flink-1.7.0/lib/flink-dist_2.11-1.7.0.jar:::
2020-05-07 13:44:35,027 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         - --------------------------------------------------------------------------------
2020-05-07 13:44:35,028 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         - Registered UNIX signal handlers for [TERM, HUP, INT]
2020-05-07 13:44:35,038 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: jobmanager.rpc.address, localhost
2020-05-07 13:44:35,038 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: jobmanager.rpc.port, 6123
2020-05-07 13:44:35,038 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: jobmanager.heap.size, 1024m
2020-05-07 13:44:35,039 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: taskmanager.heap.size, 1024m
2020-05-07 13:44:35,039 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: taskmanager.numberOfTaskSlots, 1
2020-05-07 13:44:35,039 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: parallelism.default, 1
2020-05-07 13:44:35,039 INFO  org.apache.flink.configuration.GlobalConfiguration            - Loading configuration property: rest.port, 8081
2020-05-07 13:44:35,050 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         - Starting StandaloneSessionClusterEntrypoint.
2020-05-07 13:44:35,050 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         - Install default filesystem.
2020-05-07 13:44:35,059 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         - Install security context.
2020-05-07 13:44:35,093 INFO  org.apache.flink.runtime.security.modules.HadoopModule        - Hadoop user set to root (auth:SIMPLE)
2020-05-07 13:44:35,108 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         - Initializing cluster services.
2020-05-07 13:44:35,222 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcServiceUtils         - Trying to start actor system at localhost:6123
2020-05-07 13:44:35,484 INFO  akka.event.slf4j.Slf4jLogger                                  - Slf4jLogger started
2020-05-07 13:44:35,528 INFO  akka.remote.Remoting                                          - Starting remoting
2020-05-07 13:44:35,689 INFO  akka.remote.Remoting                                          - Remoting started; listening on addresses :[akka.tcp://flink@localhost:6123]
2020-05-07 13:44:35,701 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcServiceUtils         - Actor system started at akka.tcp://flink@localhost:6123
2020-05-07 13:44:35,712 WARN  org.apache.flink.configuration.Configuration                  - Config uses deprecated configuration key 'jobmanager.rpc.address' instead of proper key 'rest.address'
2020-05-07 13:44:35,720 INFO  org.apache.flink.runtime.blob.BlobServer                      - Created BLOB server storage directory /tmp/blobStore-6ebe1cfd-45de-47a5-9924-28054dd11bbf
2020-05-07 13:44:35,723 INFO  org.apache.flink.runtime.blob.BlobServer                      - Started BLOB server at 0.0.0.0:34077 - max concurrent requests: 50 - max backlog: 1000
2020-05-07 13:44:35,734 INFO  org.apache.flink.runtime.metrics.MetricRegistryImpl           - No metrics reporter configured, no metrics will be exposed/reported.
2020-05-07 13:44:35,735 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         - Trying to start actor system at localhost:0
2020-05-07 13:44:35,747 INFO  akka.event.slf4j.Slf4jLogger                                  - Slf4jLogger started
2020-05-07 13:44:35,753 INFO  akka.remote.Remoting                                          - Starting remoting
2020-05-07 13:44:35,764 INFO  akka.remote.Remoting                                          - Remoting started; listening on addresses :[akka.tcp://flink-metrics@localhost:43285]
2020-05-07 13:44:35,764 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         - Actor system started at akka.tcp://flink-metrics@localhost:43285
2020-05-07 13:44:35,768 INFO  org.apache.flink.runtime.dispatcher.FileArchivedExecutionGraphStore  - Initializing FileArchivedExecutionGraphStore: Storage directory /tmp/executionGraphStore-10597f39-df1c-4208-ae05-3f4f5682cfc0, expiration time 3600000, maximum cache size 52428800 bytes.
2020-05-07 13:44:35,785 INFO  org.apache.flink.runtime.blob.TransientBlobCache              - Created BLOB cache storage directory /tmp/blobStore-b11cd0dd-0c07-4476-bb43-7bfa66e1761f
2020-05-07 13:44:35,798 WARN  org.apache.flink.configuration.Configuration                  - Config uses deprecated configuration key 'jobmanager.rpc.address' instead of proper key 'rest.address'
2020-05-07 13:44:35,798 WARN  org.apache.flink.runtime.dispatcher.DispatcherRestEndpoint    - Upload directory /tmp/flink-web-b8564366-cdd1-4120-a72f-21669074fd70/flink-web-upload does not exist, or has been deleted externally. Previously uploaded files are no longer available.
2020-05-07 13:44:35,799 INFO  org.apache.flink.runtime.dispatcher.DispatcherRestEndpoint    - Created directory /tmp/flink-web-b8564366-cdd1-4120-a72f-21669074fd70/flink-web-upload for file uploads.
2020-05-07 13:44:35,801 INFO  org.apache.flink.runtime.dispatcher.DispatcherRestEndpoint    - Starting rest endpoint.
2020-05-07 13:44:35,943 INFO  org.apache.flink.runtime.webmonitor.WebMonitorUtils           - Determined location of main cluster component log file: /dxhstorm/flink/flink-1.7.0/log/flink-root-standalonesession-0-moonright.log
2020-05-07 13:44:35,943 INFO  org.apache.flink.runtime.webmonitor.WebMonitorUtils           - Determined location of main cluster component stdout file: /dxhstorm/flink/flink-1.7.0/log/flink-root-standalonesession-0-moonright.out
2020-05-07 13:44:36,089 INFO  org.apache.flink.runtime.dispatcher.DispatcherRestEndpoint    - Shutting down rest endpoint.
2020-05-07 13:44:36,091 WARN  org.apache.hadoop.security.UserGroupInformation               - PriviledgedActionException as:root (auth:SIMPLE) cause:org.apache.flink.util.FlinkException: Could not create the DispatcherResourceManagerComponent.
2020-05-07 13:44:36,092 INFO  org.apache.flink.runtime.entrypoint.ClusterEntrypoint         - Shutting StandaloneSessionClusterEntrypoint down with application status FAILED. Diagnostics org.apache.flink.util.FlinkException: Could not create the DispatcherResourceManagerComponent.
	at org.apache.flink.runtime.entrypoint.component.AbstractDispatcherResourceManagerComponentFactory.create(AbstractDispatcherResourceManagerComponentFactory.java:242)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runCluster(ClusterEntrypoint.java:215)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.lambda$startCluster$0(ClusterEntrypoint.java:163)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1924)
	at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:162)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runClusterEntrypoint(ClusterEntrypoint.java:517)
	at org.apache.flink.runtime.entrypoint.StandaloneSessionClusterEntrypoint.main(StandaloneSessionClusterEntrypoint.java:65)
Caused by: java.net.BindException: 地址已在使用
	at sun.nio.ch.Net.bind0(Native Method)
	at sun.nio.ch.Net.bind(Net.java:433)
	at sun.nio.ch.Net.bind(Net.java:425)
	at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
	at org.apache.flink.shaded.netty4.io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:128)
	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:558)
	at org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1358)
	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:501)
	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:486)
	at org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:1019)
	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel.bind(AbstractChannel.java:254)
	at org.apache.flink.shaded.netty4.io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:366)
	at org.apache.flink.shaded.netty4.io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
	at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
	at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463)
	at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at java.lang.Thread.run(Thread.java:748)
.
2020-05-07 13:44:36,095 INFO  org.apache.flink.runtime.blob.BlobServer                      - Stopped BLOB server at 0.0.0.0:34077
2020-05-07 13:44:36,096 INFO  org.apache.flink.runtime.blob.TransientBlobCache              - Shutting down BLOB cache
2020-05-07 13:44:36,102 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcService              - Stopping Akka RPC service.
2020-05-07 13:44:36,106 INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator         - Shutting down remote daemon.
2020-05-07 13:44:36,107 INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator         - Remote daemon shut down; proceeding with flushing remote transports.
2020-05-07 13:44:36,108 INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator         - Shutting down remote daemon.
2020-05-07 13:44:36,109 INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator         - Remote daemon shut down; proceeding with flushing remote transports.
2020-05-07 13:44:36,125 INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator         - Remoting shut down.
2020-05-07 13:44:36,125 INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator         - Remoting shut down.
2020-05-07 13:44:36,150 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcService              - Stopped Akka RPC service.
2020-05-07 13:44:36,151 ERROR org.apache.flink.runtime.entrypoint.ClusterEntrypoint         - Could not start cluster entrypoint StandaloneSessionClusterEntrypoint.
org.apache.flink.runtime.entrypoint.ClusterEntrypointException: Failed to initialize the cluster entrypoint StandaloneSessionClusterEntrypoint.
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:181)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runClusterEntrypoint(ClusterEntrypoint.java:517)
	at org.apache.flink.runtime.entrypoint.StandaloneSessionClusterEntrypoint.main(StandaloneSessionClusterEntrypoint.java:65)
Caused by: org.apache.flink.util.FlinkException: Could not create the DispatcherResourceManagerComponent.
	at org.apache.flink.runtime.entrypoint.component.AbstractDispatcherResourceManagerComponentFactory.create(AbstractDispatcherResourceManagerComponentFactory.java:242)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runCluster(ClusterEntrypoint.java:215)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.lambda$startCluster$0(ClusterEntrypoint.java:163)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1924)
	at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:162)
	... 2 more
Caused by: java.net.BindException: 地址已在使用
	at sun.nio.ch.Net.bind0(Native Method)
	at sun.nio.ch.Net.bind(Net.java:433)
	at sun.nio.ch.Net.bind(Net.java:425)
	at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
	at org.apache.flink.shaded.netty4.io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:128)
	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:558)
	at org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1358)
	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:501)
	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:486)
	at org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:1019)
	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel.bind(AbstractChannel.java:254)
	at org.apache.flink.shaded.netty4.io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:366)
	at org.apache.flink.shaded.netty4.io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
	at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
	at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463)
	at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at java.lang.Thread.run(Thread.java:748)

StandaloneSessionClusterEntrypoint启动失败，是否是因为端口被占用了?
能否自定义端口呢？