Hadoop hdfs配置(版本2.7)

hadoop-env.sh

export JAVA_HOME=/home/java/jdk1.8.0_45

hdfs-site.xml

<name>dfs.nameservices</name>
<value>guanjian</value>

<name>dfs.ha.namenodes.guanjian</name>
<value>nn1,nn2</value>

<name>dfs.namenode.rpc-address.guanjian.nn1</name>
<value>host1:8020</value>

<name>dfs.namenode.rpc-address.guanjian.nn2</name>
<value>host2:8020</value>

<name>dfs.namenode.http-address.guanjian.nn1</name>
<value>host1:50070</value>

<name>dfs.namenode.http-address.guanjian.nn2</name>
<value>host2:50070</value>

<name>dfs.namenode.shared.edits.dir</name>
<value>qjournal://host1:8485;host2:8485/guanjian</value>

<name>dfs.client.failover.proxy.provider.guanjian</name>
<value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>

<name>dfs.ha.fencing.methods</name>
<value>sshfence</value>

<name>dfs.ha.fencing.ssh.private-key-files</name>
<value>/root/.ssh/id_dsa</value>

<name>dfs.journalnode.edits.dir</name>
<value>/opt/jn/data</value>

<name>dfs.ha.automatic-failover.enabled</name>
<value>true</value>

core-site.xml

<name>fs.defaultFS</name>
<value>hdfs://guanjian</value>

<name>ha.zookeeper.quorum</name>
<value>192.168.5.129:2181</value>

<name>hadoop.tmp.dir</name>
<value>/opt/hadoop2</value>

slaves

host1
host2

在/etc/hosts中,host1,host2分别制定为

192.168.5.129 host1
192.168.5.182 host2

手动建两个文件夹

mkdir -p /opt/jn/data

mkdir /opt/hadoop2

在sbin目录下启动journalnode

./hadoop-daemon.sh start journalnode

格式化namenode,在bin目录下

./hdfs namenode -format

同机启动namenode,在/bin

./hadoop-daemon.sh start namenode

在没有格式化的机器上,在/bin

./hdfs namenode -bootstrapStandby

停止所有的dfs,在/sbin

./stop-dfs.sh

格式化zkfc,在/bin

./hdfs zkfc -formatZK

进入zookeeper查看

WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper, hadoop-ha, guanjian]

我们可以看到多了一个hadoop-ha节点

一次性启动全部hdfs,在/sbin

./start-dfs.sh

访问192.168.5.182:50070(active)

访问192.168.5.129:50070(standby)

创建目录,在/bin

./hdfs dfs -mkdir -p /usr/file

上传文件,在/bin

./hdfs dfs -put /home/soft/jdk-8u45-linux-x64.tar.gz /usr/file

点击jdk-XXX.tar.gz可以看到它有2个Block(1个Block128M)


Spark配置(版本2.2.0)

spark-env.sh

export JAVA_HOME=/home/java/jdk1.8.0_45

export SPARK_MASTER_HOST=192.168.5.182

export SPARK_DAEMON_JAVA_OPTS="-Dspark.deploy.recoveryMode=ZOOKEEPER -Dspark.deploy.zookeeper.url=192.168.5.129:2181 -Dspark.deploy.zookeeper.dir=/spark"
export SPARK_MASTER_PORT=7077

slaves

host1
host2

修改Web端口,/sbin下

start-master.sh

if [ "$SPARK_MASTER_WEBUI_PORT" = "" ]; then
SPARK_MASTER_WEBUI_PORT=8091 //原始端口8080,容易与其他冲突
fi

在其中一台启动,如在host2启动,/sbin下

./start-all.sh

在另外一台host1启动master,/sbin下

./start-master.sh

host2:alive

host1:standby

进入zookeeper查看,多了一个spark节点

WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper, spark, hadoop-ha, guanjian]