在archlinux上搭建twitter storm cluster
本文详细描述如何在archlinux上搭建twitter storm cluster,转载请注明出处，谢谢。
有关archlinux基本系统安装，请参照archlinux简明安装指南一文，下面以上述为基础讲解如何一步步安装twitter storm cluster.
先列出安装主要步骤
- 安装oracle jdk
- 安装必须的编译工具gcc, g++, make
- 安装python2.7, unzip
- 编译安装zeromq
- 编译安装jzmq
- 下载lein
- 下载storm-starter
- 下载storm release版本 安装zookeeper为了自动运行storm cluster，安装supervisord
安装oracle jdk
在linux平台上标配的java是openjdk,如果要安装oracle的jdk的话，需要从官方下载相应的安装包。使用archlinux幸福的一点就是有yaourt,一切可以变得非常简单,:).
#yaourt -S jdk
注意安装完的java路径，应该是在/opt/java, 这个后面会用到。
修改/etc/profile, 添加环境变量JAVA_HOME，为PATH添加/opt/java/bin
PATH="/usr/local/sbin:/usr/local/bin:/usr/bin:/opt/java/bin" export PATH export JAVA_HOME="/opt/java"
安装编译工具
在twitter storm中会使用zeromq，因为zeromq是用c&c++编写的，所以需要安装相应的编译工具，不要使用archlinux中的版本，因为目前pacman或aur中的zeromq版本是3.x，而twitter storm中需要的zeromq是2.1.7
#pacman -S gcc g++ libtool pkg-config make autoconf git util-linux
安装python2.7, unzip
#pacman -S python2 unzip
编译安装zeromq,jzmq
从 http://download.zeromq.org/zeromq-2.1.7.tar.gz下载zeromq 2.1.7
#tar zvxf zeromq-2.1.7.tar.gz #config #make #make install
安装的路径是/usr/local/lib
编译安装jzmq
#git clone https://github.com/nathanmarz/jzmq.git #cd jzmq #./autogen.sh #./configure --with-zeromq=/usr/local #make 注意，此处可能会出错，解决办法是修改jzmq/src/Makefile.am,将classdist_noinst.stamp修改为classnoinst.stamp #make install
安装完zeromq和jzmq之后，修改/etc/ld.so.conf,在该文件中添加如下一行
/usr/local/lib
然后运行
#ldconfig
为了验证libjzmq确实使用的zeromq是自行编译的版本，可使用如下命令进行检测。
#ldd /usr/local/lib/libjzmq.so linux-gate.so.1 (0xb779e000) libzmq.so.1 => /usr/local/lib/libzmq.so.1 (0xb7749000) libuuid.so.1 => /usr/lib/libuuid.so.1 (0xb7743000) librt.so.1 => /usr/lib/librt.so.1 (0xb773a000) libpthread.so.0 => /usr/lib/libpthread.so.0 (0xb771e000) libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb7635000) libm.so.6 => /usr/lib/libm.so.6 (0xb75ee000) libc.so.6 => /usr/lib/libc.so.6 (0xb743e000) libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0xb7422000) /usr/lib/ld-linux.so.2 (0xb779f000)
如果libzmq.so.1确实指向/usr/local/lib中的版本，则说明版本使用正确。
安装storm-starter
storm-starter是由storm的作者为了storm的初学者快速上手而创建的一个github项目。
#git clone https://github.com/nathanmarz/storm-starter.git
编译运行, 注意这是运行在local模式而非常cluster模式
#lein deps #lein compile #java -cp $(lein classpath) storm.starter.ExclamationTopology
注：
直接从http://leiningen.org/下载lein script，而非直接使用pacman或yaourt来安装
#chmod +x ./lein #cp ./lein /usr/local/bin
#export LEIN_ROOT=1 如果想以root来运行lein,需要设置该变量
安装zookeeper
#yaourt -S zookeeper
作简单的配置，修改文件/etc/zookeeper/zoo.cfg,使其内容如下所示
#The number of milliseconds of each tick tickTime=2000 # The number of ticks that the initial # synchronization phase can take initLimit=10 # The number of ticks that can pass between # sending a request and getting an acknowledgement syncLimit=5 # the directory where the snapshot is stored. # do not use /tmp for storage, /tmp here is just # example sakes. dataDir=/var/lib/zookeeper # the port at which the clients will connect clientPort=2181
因为zookeeper只对IPv6地址进行监听，为了强制其只监听IPv4地址，需要修改/opt/zookeeper-3.4.5/bin/zkServer.sh，在start)一节中加入 "-Djava.net.preferIPv4Stack=true"， 整体看起来如下所示
case $1 in start) echo -n "Starting zookeeper ... " if [ -f $ZOOPIDFILE ]; then if kill -0 `cat $ZOOPIDFILE` > /dev/null 2>&1; then echo $command already running as process `cat $ZOOPIDFILE`. exit 0 fi fi nohup $JAVA "-Dzookeeper.log.dir=${ZOO_LOG_DIR}" "-Dzookeeper.root.logger=${ZOO_LOG4J_PROP}" \ "-Djava.net.preferIPv4Stack=true" \ -cp "$CLASSPATH" $JVMFLAGS $ZOOMAIN "$ZOOCFG" > "$_ZOO_DAEMON_OUT" 2>&1 < /dev/null & if [ $? -eq 0 ] then if /bin/echo -n $! > "$ZOOPIDFILE" then sleep 1 echo STARTED else echo FAILED TO WRITE PID exit 1 fi else echo SERVER DID NOT START exit 1 fi ;;
注意蓝底红字的一行。
启动zookeeper
#/opt/zookeeper-3.4.5/bin/zkServer.sh start
下载安装storm
从storm-project.net下载storm-0.8.2,将其解压到/opt目录下
#unzip storm-0.8.2.zip
修改/opt/storm-0.8.2/conf/storm.yaml, 文件内容如下
########### These MUST be filled in for a storm configuration
storm.zookeeper.servers:
- "localhost"
# - "server2"
#
nimbus.host: "localhost"
#
#
# ##### These may optionally be filled in:
#
## List of custom serializations
# topology.kryo.register:
# - org.mycompany.MyType
# - org.mycompany.MyType2: org.mycompany.MyType2Serializer
#
## List of custom kryo decorators
# topology.kryo.decorators:
# - org.mycompany.MyDecorator
#
## Locations of the drpc servers
# drpc.servers:
# - "server1"
# - "server2"
## Metrics Consumers
# topology.metrics.consumer.register:
# - class: "backtype.storm.metrics.LoggingMetricsConsumer"
# parallelism.hint: 1
# - class: "org.mycompany.MyMetricsConsumer"
# parallelism.hint: 1
# argument:
# - endpoint: "metrics-collector.mycompany.org"
java.library.path: "/usr/local/lib:/usr/local/share/java"
supervisor.slots.ports:
- 6700
- 6701
注意：
yaml要求配置项必须以空格打头
修改storm脚本，将#!/usr/bin/python改为#!/usr/bin/python2, /usr/bin/python是指向python3的所以需要显示将其改为python2
准备运行cluster模式了
#/opt/storm-0.8.2/bin/storm nimbus #/opt/storm-0.8.2/bin/storm supervisor #/opt/storm-0.8.2/bin/storm ui
上述每条指令需要单独运行在一个终端，如果ui启动成功，可以使用浏览器来访问localhost:8080查看整个cluster的状况了。
部署Topology到cluster
#./storm jar $HOME/working/storm-starter/target/storm-starter-0.0.1-SNAPSHOT-standalone.jar storm.starter.ExclamationTopology exclamationTopology
一切顺利的话，应该可以看到类似的输出
0 [main] INFO backtype.storm.StormSubmitter - Jar not uploaded to master yet. Submitting jar... 91 [main] INFO backtype.storm.StormSubmitter - Uploading topology jar /root/working/storm-starter/target/storm-starter-0.0.1-SNAPSHOT-standalone.jar to assigned location: storm-local/nimbus/inbox/stormjar-c73d28f0-68fc-4e6e-98b5-c4d1355aa94f.jar 667 [main] INFO backtype.storm.StormSubmitter - Successfully uploaded topology jar to assigned location: storm-local/nimbus/inbox/stormjar-c73d28f0-68fc-4e6e-98b5-c4d1355aa94f.jar 670 [main] INFO backtype.storm.StormSubmitter - Submitting topology exclamationTopology in distributed mode with conf {"topology.workers":3,"topology.debug":true} 2449 [main] INFO backtype.storm.StormSubmitter - Finished submitting topology: exclamationTopology
自动化运行storm cluster
每次都要手工启动storm cluster并不是一件很令人愉快的事，最好是能自动启动。解决办法总是有的，使用python supervisor即可。
#pacman -S supervisor
#mkdir -p /var/log/storm
修改supervisor配置文件，在文件最后添加如下内容
[program:storm-nimbus] environment=JAVA_HOME=/opt/java, PATH="/usr/sbin:/usr/bin:/usr/local/bin:/opt/java/bin" command=/opt/storm-0.8.2/bin/storm nimbus ;;user=storm autostart=true autorestart=true startsecs=10 startretries=999 log_stdout=true log_stderr=true logfile=/var/log/storm/nimbus.out logfile_maxbytes=20MB logfile_backups=10 [program:storm-supervisor] environment=JAVA_HOME=/opt/java, PATH="/usr/sbin:/usr/bin:/usr/local/bin:/opt/java/bin" command=/opt/storm-0.8.2/bin/storm supervisor ;;user=storm autostart=true autorestart=true startsecs=10 startretries=999 log_stdout=true log_stderr=true logfile=/var/log/storm/supervisor.out logfile_maxbytes=20MB logfile_backups=10
注：
在上述配置中显示加入了environment一行，主要是为了解决可执行文件搜索路径的问题，否则会报错说无法找到java可执行程序因其不在标准路径/usr/bin, /usr/sbin, /usr/local/bin, /usr/local/sbin中。
启动supervisord
#systemctl start supervisord
想开机自动运行supervisord的话，执行如下指令
#systemctl enable supervisord
参考资料
-
Running a Multi-Node Storm Cluster http://www.michael-noll.com/tutorials/running-multi-node-storm-cluster/
