## page was renamed from cassandra ##language:zh #pragma section-numbers off ##含有章节索引导航的 ZPyUG 文章通用模板 <<TableOfContents>> ## 默许导航,请保留 <<Include(ZPyUGnav)>> = Apache Cassandra = {{http://incubator.apache.org/cassandra/media/img/cassandra_logo.png}} A highly scalable, eventually consistent, distributed, structured key-value store. 一个高度可扩展、最終一致、分布式和结构化key-value儲存方案。 == 下载 == 从 http://incubator.apache.org/cassandra/download/ 选择二进制包下载,包名类似 apache-cassandra-incubating-x.y.z-bin.tar.gz 。 == 设置和运行 == 为了方便,下面所有命令以root身份执行。 === 以一个独立节点运行 === {{{ tar -zxvf cassandra-$VERSION.tar.gz mv cassandra-$VERSION /opt/cassandra sudo mkdir -p /var/log/cassandra sudo mkdir -p /var/lib/cassandra echo 'alias PATH=$PATH:/opt/cassandra/bin/' >> ~/.bashrc && source ~/.bashrc }}} 创建start-cassandra.sh {{{ #!/bin/bash /opt/cassandra/bin/cassand }}} 创建stop-cassandra.sh {{{ #!/bin/bash kill `ps aux | fgrep $USER | grep cassandra | grep -v 'grep' | awk '{print $2}'` }}} 创建show-cassandra.sh {{{ #/bin/bash echo "cassandra PID: `ps aux | fgrep $USER | grep cassandra | grep -v 'grep' | awk '{print $2}'`" }}} 以后台方式运行节点: {{{ ./start-cassandra.sh }}} 或以前台方式运行: {{{ cassandra -f }}} 测试 {{{ cassandra-cli --host localhost --port 9160 }}} 如果成功会显示: {{{ Connected to localhost/9160 Welcome to cassandra CLI. Type 'help' or '?' for help. Type 'quit' or 'exit' to quit. cassandra> }}} 尝试写和读键: {{{ set Keyspace1.Standard1['shugelee']['first'] = 'Lee' set Keyspace1.Standard1['shugelee']['last'] = 'Li' set Keyspace1.Standard1['shugelee']['age'] = '21' get Keyspace1.Standard1['shugelee'] }}} 結果类似: {{{ (column=last, value=li; timestamp=1263050140529) (column=first, value=lee; timestamp=1263050117638) (column=age, value=18; timestamp=1263050155638) Returned 3 rows. }}} === 以一个簇(集群)运行 === 假定两台debian均按上面安装并初步设置了cassandra环境: * A 192.168.1.101 [development server] * B 192.168.1.105 [developer Lee Li] 将A 192.168.1.101 [development server]作为主server运行。 '''development server的设置''' {{{ <Seed>127.0.0.1</Seed> }}} 改为: {{{ <Seed>192.168.1.101</Seed> }}} {{{ <ListenAddress>localhost</ListenAddress> }}} 改为: {{{ <ListenAddress>192.168.1.105</ListenAddress> }}} {{{ <ThriftAddress>localhost</ThriftAddress> }}} 改为: {{{ <ThriftAddress>0.0.0.0</ThriftAddress> }}} '''developer Lee Li的设置''' {{{ <Seed>127.0.0.1</Seed> }}} 改为: {{{ <Seed>192.168.1.101</Seed> <Seed>192.168.1.105</Seed> }}} {{{ <ListenAddress>localhost</ListenAddress> }}} 改为: {{{ <ListenAddress>192.168.1.101</ListenAddress> }}} {{{ <ThriftAddress>localhost</ThriftAddress> }}} 改为: {{{ <ThriftAddress>0.0.0.0</ThriftAddress> }}} 分别运行A和B上的cassandra: {{{ canssandra -f }}} 分别在A和B上测试: {{{ nodeprobe -host 192.168.1.101 ring }}} 如果成功,結果类似: {{{ DEBUG - Loading settings from /opt/cassandra/bin/../conf/storage-conf.xml DEBUG - Syncing log with a period of 1000 Starting Token Ending Token Size Address Ring 132617574668126261121070408499066554197 127319937893509951017249225297128612859 1 192.168.1.101 |<--| 127319937893509951017249225297128612859 132617574668126261121070408499066554197 1 192.168.1.105 |-->| }}} 分别在A和B上测试链接到一个node: {{{ cassandra-cli --host 192.168.1.105 --port 9160 }}} 如果成功,結果类似: {{{ # cassandra-cli --host 192.168.1.105 --port 9160 Connected to 192.168.1.105/9160 Welcome to cassandra CLI. Type 'help' or '?' for help. Type 'quit' or 'exit' to quit. cassandra> }}} 测试清单: * A连接到自己的cassandra * A连接到B的cassandra * B连接到自己的cassandra * B连接到A的cassandra * A连接到自己的cassandra,写入并读取键值 * A连接到B的cassandra,写入并读取键值 * B连接到自己的cassandra,写入并读取键值 * B连接到A的cassandra,写入并读取键值 测试清单二: * B停止Cassandra服务,B连接到A并写入数据,重启B的Cassandra服务,B连接到自身的Casssandra,查看刚刚在A写入的数据(以-f方式运行观察,B重启时,立即自动与A同步!非常好!) == 在各个平台下运行 == Gentoo GNU/Linux + JRE6下运行成功: {{http://lee.youxu.info/blog/wp-content/uploads/2010/01/cassandra-on-gentoo.png}} Windows XP SP3 + JRE6下运行成功: {{http://lee.youxu.info/blog/wp-content/uploads/2010/01/cassandra-on-windows.jpg}} == 参考链接 == * http://wiki.apache.org/cassandra/GettingStarted * http://lee.youxu.info/blog/articles/apache-cassandra-docs-translation-proj.html * http://schabby.de/cassandra-installation-configuration/ ---- '''TODO''' * Python + Thrift+ Cassandra写几个小玩具) * flex+python+thrift+cassandra的guestbook已完成,可惜公司老大不同意开源 * Python/PyGTK + thrift + cassandra的字典已完成,稍后开源 * K/V型和R型比较,各自的比较和总结 ---- '''反馈''' 创建 by -- ZoomQuiet [<<DateTime(2010-01-11T00:32:30+0800)>>] 修改 by -- -- [[flyinflash]] [<<Date(2010-01-11T12:22:01Z)>>]