我已经在 ec2 集群上成功安装并启动了 Zeppelin，在 yarn 上使用 spark 1.3 和 hadoop 2.4.1。（如https://github.com/apache/incubator-zeppelin中给出的）
但是，我看到 zeppelin 以“断开连接”状态开始（在右上角）。根据日志，我发现 zeppelin 端口和 websocket 端口（zeppeling 端口 + 1）都已启动且没有错误。此外，这两个端口都没有被任何其他进程使用，我看到 zeppelin 进程 (pid) 在两个端口上运行。IP 表为空白。
日志：
INFO [2015-06-30 03:20:31,294] ({main} QuartzScheduler.java[initialize]:305) - Scheduler meta-data: Quartz Scheduler (v2.2.1) 'DefaultQuartzScheduler' with instanceId 'NON_CLUSTERED'
Scheduler class: 'org.quartz.core.QuartzScheduler' - running locally.
NOT STARTED.
Currently in standby mode.
Number of jobs executed: 0
Using thread pool 'org.quartz.simpl.SimpleThreadPool' - with 10 threads.
Using job-store 'org.quartz.simpl.RAMJobStore' - which does not support persistence. and is not clustered.
INFO [2015-06-30 03:20:31,294] ({main} StdSchedulerFactory.java[instantiate]:1339) - Quartz scheduler 'DefaultQuartzScheduler' initialized from default resource file in Quartz package: 'quartz.properties'
INFO [2015-06-30 03:20:31,294] ({main} StdSchedulerFactory.java[instantiate]:1343) - Quartz scheduler version: 2.2.1
INFO [2015-06-30 03:20:31,295] ({main} QuartzScheduler.java[start]:575) - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED started.
INFO [2015-06-30 03:20:31,510] ({main} ServerImpl.java[initDestination]:94) - Setting the server's publish address to be /
INFO [2015-06-30 03:20:31,625] ({main} StandardDescriptorProcessor.java[visitServlet]:284) - NO JSP Support for /, did not find org.apache.jasper.servlet.JspServlet
INFO [2015-06-30 03:20:32,374] ({main} AbstractConnector.java[doStart]:338) - Started SocketConnector@0.0.0.0:8083
INFO [2015-06-30 03:20:32,374] ({main} ZeppelinServer.java[main]:108) - Started
INFO [2015-06-30 03:20:30,181] ({main} ZeppelinConfiguration.java[create]:98) - Load configuration from file:/home/ec2-user/incubator-zeppelin/conf/zeppelin-site.xml
INFO [2015-06-30 03:20:30,336] ({main} NotebookServer.java[creatingwebSocketServerLog]:65) - Create zeppelin websocket on 0.0.0.0:8084
INFO [2015-06-30 03:20:30,537] ({main} ZeppelinServer.java[main]:106) - Start zeppelin server
INFO [2015-06-30 03:20:30,539] ({main} Server.java[doStart]:272) - jetty-8.1.14.v20131031
zeppelin-env.sh：
export ZEPPELIN_PORT=8083
export HADOOP_CONF_DIR=/mnt/disk1/hadoop-2.4.1/etc/hadoop
export SPARK_HOME=/mnt/disk2/spark
在zeppelin-site.xml中，我只为 websocket 端口设置了服务器 ip 地址和端口以及 -1。
当我通过 chorme 访问 websocket 端口时，我得到“没有收到数据..err_empty_reponse”和“无法加载网页，因为服务器没有发送数据”错误。
我在安装或配置过程中遗漏了什么吗？任何帮助表示赞赏。谢谢。