七、配置zookeeper
[root@hadoop3 ~]# echo 1 > /usr/local/hadoop/zookeeper/data/myid #在hadoop3上
[root@hadoop4 ~]# echo 2 > /usr/local/hadoop/zookeeper/data/myid #在hadoop4上
[root@hadoop5 ~]# echo 3 > /usr/local/hadoop/zookeeper/data/myid #在hadoop5上
八、启动集群
1.在hadoop3-5上启动zookeeper
[root@hadoop3 ~]# zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /usr/local/hadoop/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[root@hadoop3 ~]# zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /usr/local/hadoop/zookeeper/bin/../conf/zoo.cfg
Mode: follower
[root@hadoop3 ~]# jps
2184 QuorumPeerMain
2237 Jps
#hadoop4和hadoop5相同操作
2.在hadoop1上格式化 ZooKeeper 集群
[root@hadoop1 ~]# hdfs zkfc -formatZK
3.在hadoop3-5上启动journalnode
[root@hadoop3 ~]# hadoop-daemon.sh start journalnode
starting journalnode, logging to /usr/local/hadoop/logs/hadoop-root-journalnode-hadoop3.out
[root@hadoop3 ~]# jps
2244 JournalNode
2293 Jps
2188 QuorumPeerMain