title: Cassandra failed to connect
body: <p>I'm newbie in cassandra apache. In the tutorial video, it says type bin/nodetools status to check the status of node but when I tried to input it. Terminal returns </p>
  
  <pre><code>Failed to connect to '127.0.0.1:7199' - ConnectException: 'Connection
  refused (Connection refused)'.
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/pUA1s.png" rel="nofollow noreferrer">Check this image</a></p>
  
  <p>I tried to change JVM_OPTS to "$JVM_OPTS -Djava.rmi.server.hostname=localhost" in cassandra-env.sh
  but still can't connect.
  What I gonna do to fix this error?</p>
  
  <p>Debug.logs</p>
  
  <pre><code>DEBUG [main] 2017-01-21 13:57:48,095 ColumnFamilyStore.java:881 - Enqueuing flush of local: 38.338KiB (0%) on-heap, 0.000KiB (0%) off-heap
  DEBUG [PerDiskMemtableFlushWriter_0:1] 2017-01-21 13:57:48,167 Memtable.java:435 - Writing Memtable-local@858986260(8.879KiB serialized bytes, 1 ops, 0%/0% of on/off-heap limit), flushed range = (min(-9223372036854775808), max(9223372036854775807)]
  DEBUG [PerDiskMemtableFlushWriter_0:1] 2017-01-21 13:57:48,168 Memtable.java:464 - Completed flushing /usr/lib/cassandra/apache-cassandra-3.9/data/data/system/local-7ad54392bcdd35a684174e047860b377/mc-56-big-Data.db (5.367KiB) for commitlog position CommitLogPosition(segmentId=1484978256521, position=32861)
  DEBUG [MemtableFlushWriter:1] 2017-01-21 13:57:48,471 ColumnFamilyStore.java:1184 - Flushed to [BigTableReader(path='/usr/lib/cassandra/apache-cassandra-3.9/data/data/system/local-7ad54392bcdd35a684174e047860b377/mc-56-big-Data.db')] (1 sstables, 9.527KiB), biggest 9.527KiB, smallest 9.527KiB
  DEBUG [CompactionExecutor:1] 2017-01-21 13:57:48,472 CompactionTask.java:150 - Compacting (896b3470-df9e-11e6-9508-7dc463a45cc9) [/usr/lib/cassandra/apache-cassandra-3.9/data/data/system/local-7ad54392bcdd35a684174e047860b377/mc-53-big-Data.db:level=0, /usr/lib/cassandra/apache-cassandra-3.9/data/data/system/local-7ad54392bcdd35a684174e047860b377/mc-54-big-Data.db:level=0, /usr/lib/cassandra/apache-cassandra-3.9/data/data/system/local-7ad54392bcdd35a684174e047860b377/mc-55-big-Data.db:level=0, /usr/lib/cassandra/apache-cassandra-3.9/data/data/system/local-7ad54392bcdd35a684174e047860b377/mc-56-big-Data.db:level=0, ]
  DEBUG [main] 2017-01-21 13:57:48,539 StorageService.java:2084 - Node localhost/127.0.0.1 state NORMAL, token [-1035692197905104867, -1103547951527719073, -1136980347732340590, -1150272208899529050, -1184340318934652250, -1251847845785777189, -1355083122390358187,
  INFO  [main] 2017-01-21 13:57:48,539 StorageService.java:2087 - Node localhost/127.0.0.1 state jump to NORMAL
  DEBUG [main] 2017-01-21 13:57:48,545 StorageService.java:1336 - NORMAL
  DEBUG [PendingRangeCalculator:1] 2017-01-21 13:57:48,575 PendingRangeCalculatorService.java:66 - finished calculation for 3 keyspaces in 19ms
  INFO  [main] 2017-01-21 13:57:49,125 NativeTransportService.java:70 - Netty using native Epoll event loop
  DEBUG [CompactionExecutor:1] 2017-01-21 13:57:49,286 CompactionTask.java:230 - Compacted (896b3470-df9e-11e6-9508-7dc463a45cc9) 4 sstables to [/usr/lib/cassandra/apache-cassandra-3.9/data/data/system/local-7ad54392bcdd35a684174e047860b377/mc-57-big,] to level=0.  9.869KiB to 4.938KiB (~50% of original) in 812ms.  Read Throughput = 12.145KiB/s, Write Throughput = 6.077KiB/s, Row Throughput = ~2/s.  4 total partitions merged to 1.  Partition merge counts were {4:1, }
  INFO  [main] 2017-01-21 13:57:49,368 Server.java:159 - Using Netty Version: [netty-buffer=netty-buffer-4.0.39.Final.38bdf86, netty-codec=netty-codec-4.0.39.Final.38bdf86, netty-codec-haproxy=netty-codec-haproxy-4.0.39.Final.38bdf86, netty-codec-http=netty-codec-http-4.0.39.Final.38bdf86, netty-codec-socks=netty-codec-socks-4.0.39.Final.38bdf86, netty-common=netty-common-4.0.39.Final.38bdf86, netty-handler=netty-handler-4.0.39.Final.38bdf86, netty-tcnative=netty-tcnative-1.1.33.Fork19.fe4816e, netty-transport=netty-transport-4.0.39.Final.38bdf86, netty-transport-native-epoll=netty-transport-native-epoll-4.0.39.Final.38bdf86, netty-transport-rxtx=netty-transport-rxtx-4.0.39.Final.38bdf86, netty-transport-sctp=netty-transport-sctp-4.0.39.Final.38bdf86, netty-transport-udt=netty-transport-udt-4.0.39.Final.38bdf86]
  INFO  [main] 2017-01-21 13:57:49,369 Server.java:160 - Starting listening for CQL clients on localhost/127.0.0.1:9042 (unencrypted)...
  INFO  [main] 2017-01-21 13:57:49,429 CassandraDaemon.java:521 - Not starting RPC server as requested. Use JMX (StorageService-&gt;startRPCServer()) or nodetool (enablethrift) to start it
  </code></pre>