搭建集群，master上用report命令却显示Configured Capacity: 0 (0 KB) Present Cap...

想问问大家 我搭建的hadoop集群 用jps查看datanode能够启动但是在master上用report命令却显示Configured Capacity: 0 (0 KB) Present Capacity: 0 (0 KB) DFS Remaining: 0 (0）这是什么原因啦 ?

下面是报的日志：

2013-11-14 08:04:02,528 INFO org.apache.hadoop.ipc.RPC: Server at slave/10.21.240.115:9000 not available yet, Zzzzz...

2013-11-14 08:04:04,532 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: slave/10.21.240.115:9000. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)2013-11-14 08:04:05,534 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: slave/10.21.240.115:9000. Already tried 1 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)2013-11-14 08:04:06,537 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: slave/10.21.240.115:9000. Already tried 2 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)2013-11-14 08:04:07,539 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: slave/10.21.240.115:9000. Already tried 3 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)2013-11-14 08:04:08,542 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: slave/10.21.240.115:9000. Already tried 4 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)2013-11-14 08:04:09,544 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: slave/10.21.240.115:9000. Already tried 5 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)2013-11-14 08:04:10,548 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: slave/10.21.240.115:9000. Already tried 6 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)2013-11-14 08:04:11,550 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: slave/10.21.240.115:9000. Already tried 7 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)

2013-11-14 08:04:12,553 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: slave/10.21.240.115:9000. Already tried 8 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)

2013-11-14 08:04:13,556 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: slave/10.21.240.115:9000. Already tried 9 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)

2013-11-14 08:04:13,559 INFO org.apache.hadoop.ipc.RPC: Server at sla

急求啊 大神帮助一下啊

这不是没连上嘛你ssh slave能连上吗lave 那边能ssh master吗，你这个问题是slave无法连接到master给其发送heartbeat

在slave上用jps又可以查看到datanode启动了，但是就是master上用report命令显示没有datanode，这是格式化namenode时日志出现的问题。

ERROR org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException as:hadoop cause:java.io.IOException: File /opt/hadoop/tmp/mapred/system/jobtracker.info could only be replicated to 0 nodes, instead of 12013-11-14 07:31:34,288 INFO org.apache.hadoop.ipc.Server: IPC Server handler 3 on 9000, call addBlock(/opt/hadoop/tmp/mapred/system/jobtracker.info, DFSClient_NONMAPREDUCE_1480811546_1, null) from 10.21.240.116:36182: error: java.io.IOException: File /opt/hadoop/tmp/mapred/system/jobtracker.info could only be replicated to 0 nodes, instead of 1java.io.IOException: File /opt/hadoop/tmp/mapred/system/jobtracker.info could only be replicated to 0 nodes, instead of 1

你把所有生成的文件夹全部删除，重新format