部署兩節點cassandra叢集

部署兩節點cassandra叢集
確保系統已安裝jdk，可不配置JAVA環境變數
cassandra版本：apache-cassandra-1.1.5jdk版本：jdk1.6.0_38
1、cassandra 日誌路徑#vim log4j-server.propertieslog4j.appender.R.File=/trs6/cassandra/logs/system.log
2、cassandra 記憶體使用量 (HEAP_NEWSIZE)=1/4(MAX_HEAP_SIZE)#vim cassandra-env.shMAX_HEAP_SIZE="4G"HEAP_NEWSIZE="800M"
3、cassandra 叢集配置#vim cassandra.yamlcluster_name: 'pis'    //叢集名稱initial_token: 0    //由initial_token.py產生
#!/usr/bin/env pythonimport sysif (len(sys.argv) > 1):        num=int(sys.argv[1])else:        num=int(raw_input("How many nodes are in your cluster? "))for i in range(0, num):        print 'node %d: %d' % (i, (i*(2**127)/num))
data_file_directories:    - /trs6/cassandra/data    //data儲存目錄commitlog_directory: /trs6/cassandra/commitlog     //commit日誌目錄saved_caches_directory: /trs6/cassandra/saved_cache  //cache儲存目錄- seeds: "192.168.183.71,192.168.183.72"     //種子節點IPlisten_address: 192.168.183.71    //監聽地址->本機IPrpc_address: 192.168.183.71endpoint_snitch: SimpleSnitch
4、啟動叢集#bin/cassandra
5、查看叢集狀態#bin/nodetool -h 192.168.183.71 ring
Address         DC          Rack        Status State   Load            Effective-Ownership Token                                                                                                                                  85070591730234615865843651857942052864      192.168.183.71  datacenter1 rack1       Up     Normal  23.61 KB        50.00%              0                                           192.168.183.72  datacenter1 rack1       Up     Normal  23.61 KB        50.00%              85070591730234615865843651857942052864
6、互動式命令列 分號結尾）[root@cas1 ~]# bin/cassandra-cli -h 192.168.183.71Connected to: "pis" on 192.168.183.71/9160Welcome to Cassandra CLI version 1.1.5
Type 'help;' or '?' for help.Type 'quit;' or 'exit;' to quit.
1）建立keyspace[default@unknown] create keyspace DEMO;5210d4ac-24e2-37e1-8d38-13a3cab24f33Waiting for schema agreement...... schemas agree across the cluster2）認證使用keyspace[default@unknown] use DEMO;Authenticated to keyspace: DEMO3）建立column family[default@DEMO] create column family Users                ...with key_validation_class = 'UTF8Type'    ...and comparator = 'UTF8Type'               ...and default_validation_class = 'UTF8Type';8618bf72-4e3d-3b7c-84f6-031e69e7d161Waiting for schema agreement...... schemas agree across the cluster4）儲存資料到column family[default@DEMO] set Users[1234][name] = tianxin;Value inserted.Elapsed time: 87 msec(s).[default@DEMO] set Users[1234][password] = upgirl; Value inserted.Elapsed time: 28 msec(s).5）擷取資料[default@DEMO] get Users[1234];=> (column=name, value=tianxin, timestamp=1362521480914000)=> (column=password, value=upgirl, timestamp=1362521498155000)Returned 2 results.Elapsed time: 131 msec(s).

遇到的問題：1、啟動cassandra時，報錯 Error: Exception thrown by the agent : java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: cas1: cas1原因：叢集節點必須配置主機名稱的解析

2、建立keyspace時，報錯 The schema has not settled in 10 seconds; further migrations are ill-advised until it does.Versions are e71db6f5-eb85-3555-b851-1878497cf194:[198.216.27.72],eceb06f2-03a1-3bf8-a421-2528a053d7e6:[198.216.27.71]原因：叢集節點間時間不同步

本文出自 “振翅的小宇宙” 部落格，請務必保留此出處http://upgirl.blog.51cto.com/3744514/1147976