spark提交作业报错Failed to connect to master/172.16.97.213:7070

弄了一晚上了，网上找的都试过了就是不行
用的云服务器  172.16.97.213是master的内网

报错如下：

hduser@master:~/hadoop2.6/spark1.6/sbin$ spark-submit --master spark://master:7070 --deploy-mode cluster --name "wordcount" --class WordCount /home/hduser/files/wordcount.jar hdfs://master:9000/wordcount/input hdfs://master:9000/wordcount/output
Running Spark using the REST application submission protocol.
17/09/30 11:46:25 INFO rest.RestSubmissionClient: Submitting a request to launch an application in spark://master:7070.
17/09/30 11:46:25 WARN rest.RestSubmissionClient: Unable to connect to server spark://master:7070.
Warning: Master endpoint spark://master:7070 was not a REST server. Falling back to legacy submission gateway instead.
17/09/30 11:46:26 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Exception in thread "main" java.io.IOException: Failed to connect to master/172.16.97.213:7070
      at org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:216)
      at org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:167)
      at org.apache.spark.rpc.netty.NettyRpcEnv.createClient(NettyRpcEnv.scala:200)
      at org.apache.spark.rpc.netty.Outbox$$anon$1.call(Outbox.scala:187)
      at org.apache.spark.rpc.netty.Outbox$$anon$1.call(Outbox.scala:183)
      at java.util.concurrent.FutureTask.run(FutureTask.java:266)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
      at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.ConnectException: Connection refused: master/172.16.97.213:7070
      at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
      at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
      at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:224)
      at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:289)
      at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528)
      at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
      at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
      at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
      at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
      ... 1 more

你们有遇到过类似的问题吗？怎么解决的？

spark-env.sh配置如下：
export HADOOP_HOME=/home/hduser/hadoop2.6
export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop
export SCALA_HOME=/home/hduser/hadoop2.6/scala2.10
export JAVA_HOME=/usr/jdk1.8
export SPARK_WORKER_MEMORY=2G
export SPARK_MASTER_PORT=7077
export STANDALONE_SPARK_MASTER_HOST=master
export SPARK_MASTER_IP=$STANDALONE_SPARK_MASTER_HOST

访问master7070端口显示如下：
hduser@node1:~/hadoop2.6/etc/hadoop$ nmap -p 7077 172.16.97.213

Starting Nmap 7.01 ( https://nmap.org ) at 2017-09-30 11:42 EDT
Nmap scan report for master (172.16.97.213)
Host is up (0.00095s latency).
PORT    STATE SERVICE
7077/tcp open  unknown

Nmap done: 1 IP address (1 host up) scanned in 0.03 seconds

host配置如下：
ff02::1 ip6-allnodes
#    The    following    lines are    desirable    for    IPv6 capable hosts
ff02::2 ip6-allrouters
::1    localhost    ip6-localhost ip6-loopback
172.16.97.213 master.cloud.mos       master
172.16.97.216 node2
172.16.97.215 node1
#127.0.0.1    localhost

spark菜鸟，有知道的朋友麻烦教教我是怎么回事？