Spark集群基于Zookeeper的HA搭建部署笔记
1.环境介绍（1）操作系统RHEL6.2-64
（2）两个节点：spark1(192.168.232.147),spark2(192.168.232.152)
（3）两个节点上都装好了Hadoop 2.2集群
2.安装Zookeeper
（1）下载Zookeeper：http://apache.claz.org/zookeeper ... keeper-3.4.5.tar.gz
（2）解压到/root/install/目录下
（3）创建两个目录，一个是数据目录，一个日志目录
（4）配置：进到conf目录下，把zoo_sample.cfg修改成zoo.cfg（这一步是必须的，否则zookeeper不认识zoo_sample.cfg），并添加如下内容
[*] dataDir=/root/install/zookeeper-3.4.5/data
[*] dataLogDir=/root/install/zookeeper-3.4.5/logs
[*] server.1=spark1:2888:3888
[*] server.2=spark2:2888:3888
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（5）在/root/install/zookeeper-3.4.5/data目录下创建myid文件，并在里面写1
[*] cd /root/install/zookeeper-3.4.5/data
[*] echo 1>myid
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（6）把/root/install/zookeeper-3.4.5整个目录复制到其他节点
[*] scp -r /root/install/zookeeper-3.4.5 root@spark2:/root/install/
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（7）登录到spark2节点，修改myid文件里的值，将其修改为2
[*] cd /root/install/zookeeper-3.4.5/data
[*] echo 2>myid
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（8）在spark1,spark2两个节点上分别启动zookeeper
[*] cd /root/install/zookeeper-3.4.5
[*] bin/zkServer.sh start
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（9）查看进程进否成在
[*] # bin/zkServer.sh start
[*] JMX enabled by default
[*] Using config: /root/install/zookeeper-3.4.5/bin/../conf/zoo.cfg
[*] Starting zookeeper ... STARTED
[*] # jps
[*] 2490 Jps
[*] 2479 QuorumPeerMain
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3.配置Spark的HA
（1）进到spark的配置目录，在spark-env.sh修改如下
[*] export SPARK_DAEMON_JAVA_OPTS="-Dspark.deploy.recoveryMode=ZOOKEEPER -Dspark.deploy.zookeeper.url=spark1:2181,spark2:2181 -Dspark.deploy.zookeeper.dir=/spark"
[*] export JAVA_HOME=/root/install/jdk1.7.0_21
[*] #export SPARK_MASTER_IP=spark1
[*] #export SPARK_MASTER_PORT=7077
[*] export SPARK_WORKER_CORES=1
[*] export SPARK_WORKER_INSTANCES=1
[*] export SPARK_WORKER_MEMORY=1g
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（2）把这个配置文件分发到各个节点上去
[*] scp spark-env.sh root@spark2:/root/install/spark-1.0/conf/
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（3）启动spark集群
[*] # sbin/start-all.sh
[*] starting org.apache.spark.deploy.master.Master, logging to /root/install/spark-1.0/sbin/../logs/spark-root-org.apache.spark.deploy.master.Master-1-spark1.out
[*] spark1: starting org.apache.spark.deploy.worker.Worker, logging to /root/install/spark-1.0/sbin/../logs/spark-root-org.apache.spark.deploy.worker.Worker-1-spark1.out
[*] spark2: starting org.apache.spark.deploy.worker.Worker, logging to /root/install/spark-1.0/sbin/../logs/spark-root-org.apache.spark.deploy.worker.Worker-1-spark2.out
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（4）进到spark2(192.168.232.152)节点，把start-master.sh 启动，当spark1(192.168.232.147)挂掉时，spark2顶替当master
[*] # sbin/start-master.sh
[*] starting org.apache.spark.deploy.master.Master, logging to /root/install/spark-1.0/sbin/../logs/spark-root-org.apache.spark.deploy.master.Master-1-spark2.out
[*]
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（5）查看spark1和spark2上运行的哪些进程
[*] # jps
[*] 5797 Worker
[*] 5676 Master
[*] 6287 Jps
[*] 2602 QuorumPeerMain
[*] # jps
[*] 2479 QuorumPeerMain
[*] 5750 Jps
[*] 5534 Worker
[*] 5635 Master
[*]
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4.测试HA是否生效
（1）先查看一下两个节点的运行情况，现在spark1运行了master,spark2是待命状态
（2）在spark1上把master服务停掉
[*] # sbin/stop-master.sh
[*] stopping org.apache.spark.deploy.master.Master
[*] # jps
[*] 5797 Worker
[*] 6373 Jps
[*] 2602 QuorumPeerMain
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（3）用浏览器访问master的8080端口，看是否还活着。以下可以看出，master已经挂掉
（4）再用浏览器访问查看spark2的状态，从下图看出，spark2已经被切换当master了
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