CentOS7 安装kylin2.6.0集群

1. 环境准备

JDK1.8

hbase1.3.3

2. 集群规划

ip地址	机器名	角色
192.168.1.101	palo101	hadoop namenode, hadoop datanode, yarn nodeManager, zookeeper, hive, hbase master,hbase region server，
192.168.1.102	palo102	hadoop namenode, hadoop datanode, yarn nodeManager, yarn resource manager, zookeeper, hive, hbase master,hbase region server
192.168.1.103	palo103	hadoop namenode, hadoop datanode, yarn nodeManager, zookeeper, hive,hbase region server,mysql

3. 下载kylin2.6

wget http://mirrors.tuna.tsinghua.edu.cn/apache/kylin/apache-kylin-2.6.0/apache-kylin-2.6.0-bin-hbase1x.tar.gz   #下载kylin2.6.0二进制文件
tar -xzvf apache-kylin-2.6.0-bin-hbase1x.tar.gz          #解压kylin2.6.0二进制压缩包
mv apache-kylin-2.6.0-bin apache-kylin-2.6.0             #将kylin解压过的文件重命名（去掉最后的bin)
mkdir /usr/local/kylin/                                  #创建目标存放路径
mv apache-kylin-2.6.0    /usr/local/kylin/               #将kylin2.6.0文件夹移动到/usr/local/kylin目录下

4. 添加系统环境变量

vim /etc/profile

在文件末尾添加

#kylin
export KYLIN_HOME=/usr/local/kylin/apache-kylin-2.6.0
export KYLIN_CONF_HOME=$KYLIN_HOME/conf
export PATH=:$PATH:$KYLIN_HOME/bin:$CATALINE_HOME/bin
export tomcat_root=$KYLIN_HOME/tomcat   #变量名小写
export hive_dependency=$HIVE_HOME/conf:$HIVE_HOME/lib/*:$HCAT_HOME/share/hcatalog/hive-hcatalog-core-2.3.4.jar   #变量名小写

:wq保存退出，并输入source /etc/profile使环境变量生效

5. 配置kylin

5.1 配置$KYLIN_HOME/bin/kylin.sh

vim $KYLIN_HOME/bin/kylin.sh

在文件开头添加

export HBASE_CLASSPATH_PREFIX=${tomcat_root}/bin/bootstrap.jar:${tomcat_root}/bin/tomcat-juli.jar:${tomcat_root}/lib/*:$hive_dependency:$HBASE_CLASSPATH_PREFIX

这么做的目的是为了加入$hive_dependency环境，解决后续的两个问题，都是没有hive依赖的原因:
a) kylinweb界面load hive表会失败
b) cube build的第二步会报org/apache/Hadoop/hive/conf/hiveConf的错误。

5.2 hadoop压缩配置

关于snappy压缩支持问题，如果支持需要事先重新编译Hadoop源码，使得native库支持snappy.使用snappy能够实现一个适合的压缩比，使得这个运算的中间结果和最终结果都能占用较小的存储空间
本例的hadoop不支持snappy压缩，这个会导致后续cube build报错。

vim  $KYLIN_HOME/conf/Kylin_job_conf.xml

修改配置文件，将配置项mapreduce.map.output.compress，mapreduce.output.fileoutputformat.compress修改为false

    <property>
        <name>mapreduce.map.output.compress</name>
        <value>false</value>
        <description>Compress map outputs</description>
    </property>
    <property>
        <name>mapreduce.output.fileoutputformat.compress</name>
        <value>false</value>
        <description>Compress the output of a MapReduce job</description>
    </property>

还有一个关于压缩的地方需要修改

vim   $KYLIN_HOME/conf/kylin.properties

将kylin.hbase.default.compression.codec设置为none或者注释掉

#kylin.storage.hbase.compression-codec=none

5.3 主配置$KYLIN_HOME/conf/kylin.properties

vim   $KYLIN_HOME/conf/kylin.properties

修改为：

kylin.metadata.url=kylin_metadata@hbase   ###hbase上存储kylin元数据
kylin.env.hdfs-working-dir=/kylin      ###hdfs上kylin工作目录
kylin.env=DEV
kylin.env.zookeeper-base-path=/kylin
kylin.server.mode=all      ###kylin主节点模式，从节点的模式为query，只有这一点不一样
kylin.rest.servers=192.168.1.101:7070,192.168.1.102:7070,192.168.1.103:7070    ###集群的信息同步
kylin.web.timezone=GMT+8    ####改为中国时间
kylin.job.retry=3
kylin.job.mapreduce.default.reduce.input.mb=500
kylin.job.concurrent.max.limit=10
kylin.job.yarn.app.rest.check.interval.seconds=10
kylin.job.hive.database.for.intermediatetable=kylin_flat_db     ###build cube 产生的Hive中间表存放的数据库
kylin.hbase.default.compression.codec=none   ###不采用压缩
kylin.job.cubing.inmem.sampling.percent=100
kylin.hbase.regin.cut=5
kylin.hbase.hfile.size.gb=2
###定义kylin用于MR jobs的job.jar包和hbase的协处理jar包，用于提升性能(添加项)
kylin.job.jar=/usr/local/kylin/apache-kylin-2.6.0/lib/kylin-job-2.6.0.jar
kylin.coprocessor.local.jar=/usr/local/kylin/apache-kylin-2.6.0/lib/kylin-coprocessor-2.6.0.jar

5.4 将配置好的kylin复制到其他两台机器上去

scp -r /usr/local/kylin/  192.168.1.102:/usr/local
scp -r /usr/local/kylin/  192.168.1.103:/usr/local

5.5 将192.168.1.102，192.168.1.103上的kylin.server.mode改为query

vim   $KYLIN_HOME/conf/kylin.properties

修改项为

kylin.server.mode=query      ###kylin主节点模式，从节点的模式为query，只有这一点不一样

6. 启动kylin

6.1 前提条件：依赖服务先启动

a) 启动zookeeper，所有节点运行zkServer.sh start
b) 启动hadoop，主节点运行start-all.sh
c) 启动JobHistoryserver服务，yarn主节点启动$HADOOP_HOME/sbin/mr-jobhistoryserver-deamon.sh start historyserver
d) 启动hivemetastore服务，hive –service metastore & #后台运行
e) 启动hbase集群，主节点启动start-hbase.sh

启动后的进程为：

192.168.1.101

[root@palo101 apache-kylin-2.6.0]# jps
62403 NameNode          #hdfs NameNode
31013 NodeManager       #yarn NodeManager
22325 Kafka      
54217 QuorumPeerMain    #zookeeper
7274 Jps
62589 DataNode          #hadoop datanode
28895 HRegionServer     #hbase region server
8440 HMaster            #hbase master

192.168.1.102

[root@palo102 ~]# jps
47474 QuorumPeerMain    #zookeeper
15203 NodeManager       #yarn NodeManager
15061 ResourceManager   #yarn ResourceManager
49877 Jps
6694 HRegionServer      #hbase region server
7673 Kafka
37517 SecondaryNameNode #hdfs SecondaryNameNode
37359 DataNode          #hadoop datanode

192.168.1.103

[root@palo103 ~]# jps
1185 RunJar             #hive metastore
62404 NodeManager       #yarn NodeManager
47365 HRegionServer     #hbase region server
62342 QuorumPeerMain    #zookeeper
20952 ManagerBootStrap  
52440 Kafka
31801 RunJar            #hive thrift server
47901 DataNode          #hadoop datanode
36494 Jps

6.2 检查配置是否正确

 $KYLIN_HOME/bin/check-env.sh

[root@palo101 bin]#  $KYLIN_HOME/bin/check-env.sh
Retrieving hadoop conf dir...
KYLIN_HOME is set to /usr/local/kylin/apache-kylin-2.6.0
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/usr/local/hadoop-2.7.3/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/local/apache-hive-2.3.4-bin/lib/log4j-slf4j-impl-2.6.2.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/usr/local/hadoop-2.7.3/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/local/apache-hive-2.3.4-bin/lib/log4j-slf4j-impl-2.6.2.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/usr/local/hadoop-2.7.3/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/local/apache-hive-2.3.4-bin/lib/log4j-slf4j-impl-2.6.2.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]

hive依赖检查find-hive-dependency.sh
hbase依赖检查find-hbase-dependency.sh
所有的依赖检查可吃用check-env.sh

6.3 所有节点运行下面命令来启动kylin

 $KYLIN_HOME/bin/kylin.sh start

启动时如果出现下面的错误

Failed to find metadata store by url: kylin_metadata@hbase

解决办法为：

1）将$HBASE_HOME/conf/hbase-site.html的属性hbase.rootdir改成与$HADOOP_HOME/etc/hadoop/core-site.xml中的属性fs.defaultFS一致

2）进入zk的bin的zkCli，将/hbase删除，然后重启hbase可以解决

CentOS7 安装kylin2.6.0集群

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