hadoop2.6.5 HA HA Cluster Setup

Node Planning

 

 

 

When ntp school; each virtual machine 
 yum -y install ntp 
Service ntpd restart 
Service STOP ntpd 
ntpdate 210.72.145.39 

DATE view the date and time 
timedatectl when viewing area 
time zone ln -sf / usr / share / zoneinfo / Asia / Shanghai / etc / localtime settings 

permanently turn off the firewall 
 systemctl STOP firewalld.service 
 systemctl disable firewalld.service

单独配置 node2,3,4 的zookeeper集群

[root@node2 sxt]# tail -7 /etc/profile

export JAVA_HOME=/usr/java/jdk1.8.0_221
export CLASSPATH=.:$JAVA_HOME/lib
export HADOOP_HOME=/opt/sxt/hadoop-2.6.5
export ZOOKEEPER_HOME=/opt/sxt/zookeeper-3.4.6
export PATH=$JAVA_HOME/bin:$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$ZOOKEEPER_HOME/bin


[root@node2 sxt]# cat /opt/sxt/zookeeper-3.4.6/conf/zoo.cfg 
##....
dataDir=/var/sxt/zk
##...
#autopurge.purgeInterval=1
server.1=node2:2888:3888
server.2=node3:2888:3888
server.3=node4:2888:3888

执行 1 2 3 如下操作
[root@node202 ~]# mkdir /var/sxt/zk
[root@node202 ~]# echo 1 > /var/sxt/zk/myid


At the same time start (batch issued instructions) 
zkServer.sh Start start zookeeper cluster success. 

##

NoRouteToHostException: No route to host (Host unreachable) ： 启动zookeeper报错；可能是/etc/hostname不一致。 或者防火墙没有关闭

HA hadoop cluster configuration