Jstorm2.1.1集群安装

Strom是什么？ storm是Twitter开源的的一个分布式的，容错的实时流计算系统，用来处理大数据系统中一些实时计算业务。strom本身是一个类似Hadoop的MapReduce的计算框架，最大不同在于storm是一个启动后不会停止的服务，除非主动kill掉，而MapReduce则会主动运行结束，storm本身并不负责存储数据，通常互联网的业务场景下strom会从kafka里面读取数据，然后计算完毕后，把计算结果写入redis，mysql或者hbase等一些存储或缓存系统中。 Strom能干什么？ Storm 有许多应用领域，包括实时分析、在线机器学习、信息流处理（例如，可以使用Storm 处理新的数据和快速更新数据库）、连续性的计算（例如，使用Storm 连续查询，然后将结果返回给客户端，如将微博上的热门话题转发给用户）、分布式RPC（远过程调用协议，通过网络从远程计算机程序上请求服务）、ETL（Extraction Transformation Loading，数据抽取、转换和加载）等。 Strom的特点： （1）简化了编程模型，降低了开发的难度 （2）支持多语言编程 （3）高容错性 （4）可水平扩展 （5）有ack机制，保证消息可靠快速至少得到一次完整处理 （6）支持local模式，方便快速开发调试 Strom的架构模型

Jstorm是什么？ Strom原生是用Clojure开发的，阿里团队在使用过程中，发现了不少了问题，于是使用Java重写了整个storm，使其更稳定，更快，更强大，并兼容原来storm的接口，所以命名为Jstrom，在阿里文档中提到，原storm写的jar，无须改动任何代码即可高效稳定的运行在jstrom的集群中， 如何安装Jstorm？ 操作系统： Centos7 节点三个： 192.168.10.38 zk1 jdk8 nimbus+ui+tomcat 192.168.10.39 zk2 jdk8 supervisor 192.168.10.40 zk3 jdk8 supervisor （1）在3个节点上安装JDK，不再详细叙述 （2）在3个节点上安装zookeeper，不再详细叙述，不清楚者，可参考我之前的文章： http://qindongliang.iteye.com/category/299318 zookeeper安装完之后，需要启动 （3）在github下下载jstorm的压缩包： https://github.com/alibaba/jstorm/releases

（4）解压到指定目录并配置环境变量： unzip jstorm-2.1.1.zip vi .bashrc 加入如下变量：

Java代码

1. export PATH
2. export PATH=.:$PATH
3. #jdk
4. export JAVA_HOME=/home/search/jdk1.8.0_102/
5. export CLASSPATH=.:$JAVA_HOME/lib
6. export PATH=$JAVA_HOME/bin:$PATH
7. #jstorm
8. export JSTORM_HOME=/home/search/jstorm-2.1.1
9. export PATH=$PATH:$JSTORM_HOME/bin

（5）下载tomcat wget http://ftp.kddilabs.jp/infosystems/apache/tomcat/tomcat-8/v8.5.3/bin/apache-tomcat-8.5.3.tar.gz （6）安装storm-ui

Java代码

1. //拷贝storm-ui的war包到tomcat的webapps路径下面
2. cp /home/search/jstorm-2.1.1/storm-ui-2.1.1.war /home/search/apache-tomcat-8.5.4/webapps
3. //备份旧目录
4. mv ROOT ROOT.old
5. //创建软连接，此时linux上会闪烁，不用担心，启动tomcat后，即可正常
6. ln -s jstorm-ui-2.1.1 ROOT
7. //最后进入tomcat的bin目录，启动
8. bin/startup.sh

（7）安装配置jstorm 编辑vi jstorm-2.1.1/conf/storm.yaml文件

Java代码

1. ########### These MUST be filled in for a storm configuration
2. storm.zookeeper.servers:
3. - "192.168.10.38"
4. - "192.168.10.39"
5. - "192.168.10.40"
7. storm.zookeeper.root: "/jstorm"
9. # cluster.name: "default"
11. #nimbus.host/nimbus.host.start.supervisor is being used by $JSTORM_HOME/bin/start.sh
12. #it only support IP, please don't set hostname
13. # For example
14. # nimbus.host: "10.132.168.10, 10.132.168.45"
15. nimbus.host: "192.168.10.38"
16. #nimbus.host.start.supervisor: false
18. # %JSTORM_HOME% is the jstorm home directory
19. storm.local.dir: "%JSTORM_HOME%/data"
20. # please set absolute path, default path is JSTORM_HOME/logs
21. # jstorm.log.dir: "absolute path"
23. # java.library.path: "/usr/local/lib:/opt/local/lib:/usr/lib"
27. # if supervisor.slots.ports is null,
28. # the port list will be generated by cpu cores and system memory size
29. # for example,
30. # there are cpu_num = system_physical_cpu_num/supervisor.slots.port.cpu.weight
31. # there are mem_num = system_physical_memory_size/(worker.memory.size * supervisor.slots.port.mem.weight)
32. # The final port number is min(cpu_num, mem_num)
33. # supervisor.slots.ports.base: 6800
34. # supervisor.slots.port.cpu.weight: 1.2
35. # supervisor.slots.port.mem.weight: 0.7
36. # supervisor.slots.ports: null
37. # supervisor.slots.ports:
38. # - 6800
39. # - 6801
40. # - 6802
41. # - 6803
43. # Default disable user-define classloader
44. # If there are jar conflict between jstorm and application,
45. # please enable it
46. # topology.enable.classloader: false
48. # enable supervisor use cgroup to make resource isolation
49. # Before enable it, you should make sure:
50. # 1. Linux version (>= 2.6.18)
51. # 2. Have installed cgroup (check the file's existence:/proc/cgroups)
52. # 3. You should start your supervisor on root
53. # You can get more about cgroup:
54. # http://t.cn/8s7nexU
55. # supervisor.enable.cgroup: false
58. ### Netty will send multiple messages in one batch
59. ### Setting true will improve throughput, but more latency
60. # storm.messaging.netty.transfer.async.batch: true
62. ### if this setting is true, it will use disruptor as internal queue, which size is limited
63. ### otherwise, it will use LinkedBlockingDeque as internal queue , which size is unlimited
64. ### generally when this setting is true, the topology will be more stable,
65. ### but when there is a data loop flow, for example A -> B -> C -> A
66. ### and the data flow occur blocking, please set this as false
67. # topology.buffer.size.limited: true
69. ### default worker memory size, unit is byte
70. # worker.memory.size: 2147483648
72. # Metrics Monitor
73. # topology.performance.metrics: it is the switch flag for performance
74. # purpose. When it is disabled, the data of timer and histogram metrics
75. # will not be collected.
76. # topology.alimonitor.metrics.post: If it is disable, metrics data
77. # will only be printed to log. If it is enabled, the metrics data will be
78. # posted to alimonitor besides printing to log.
79. # topology.performance.metrics: true
80. # topology.alimonitor.metrics.post: false
82. # UI MultiCluster
83. # Following is an example of multicluster UI configuration
84. # ui.clusters:
85. # - {
86. # name: "jstorm",
87. # zkRoot: "/jstorm",
88. # zkServers:
89. # [ "localhost"],
90. # zkPort: 2181,
91. # }

（8）分发配置好的jstorm包，并启动集群 A：在nimbus上，执行nohup jstorm nimbus &启动nimbus，查看$JSTORM_HOME/logs/nimbus.log，检查是否有错误 B：在supervisor节点上执行 “nohup jstorm supervisor &”, 查看$JSTORM_HOME/logs/supervisor.log检查有无错误 （9）访问nimbus所在机的ip:8080，查看Jstorm的ui图：

至此安装成功！ （10）常用命令 提交任务命令： jstorm jar xxxx.jar 类名 参数1 参数2 参数n 杀死任务命令： jstorm kill topologyName 参考文档： http://storm.apache.org/ https://github.com/alibaba/jstorm/wiki/JStorm-Chinese-Documentation