在Linux上配置Hadoop网络涉及多个步骤,以下是详细的配置过程:
ip address show
hostnamectl set-hostname master
/etc/hosts
文件,将IP地址和主机名映射添加到文件中。/etc/sysconfig/network-scripts/ifcfg-eth0
文件,设置静态IP地址、子网掩码和网关。TYPE=Ethernet
BOOTPROTO=static
IPADDR=192.168.1.100
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
DNS1=8.8.8.8
DNS2=8.8.4.4
ONBOOT=yes
service network restart
ssh-keygen -t rsa
~/.ssh/authorized_keys
文件中:ssh-copy-id user@node2
ssh-copy-id user@node3
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://namenode:9000</value>
</property>
</configuration>
<configuration>
<property>
<name>dfs.replication</name>
<value>3</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>/path/to/namenode/data</value>
</property>
</configuration>
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
</configuration>
<configuration>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>ResourceManager</value>
</property>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
</configuration>
/etc/profile
或 ~/.bashrc
文件,添加Hadoop和Java的环境变量。export JAVA_HOME=/path/to/jdk
export HADOOP_HOME=/path/to/hadoop
export PATH=$PATH:$HADOOP_HOME/bin
source /etc/profile
sudo systemctl stop firewalld
sudo systemctl disable firewalld
sudo vi /etc/selinux/config
将 SELINUX=enforcing 修改为 SELINUX=disabled ,然后保存并退出。
hdfs namenode -format
start-dfs.sh
start-yarn.sh