框架	centos7-1	centos7-2	centos7-3
HDFS	NameNode、DataNode	DataNode	SecondaryNameNode、DataNode
YARN	NodeManager	NodeManager	NodeManager、ResourceManager

一 进入centos7-1

cd /opt/servers/hadoop-2.9.2

启动namenode

 hadoop-daemon.sh start namenode

启动datanode

hadoop-daemon.sh start datanode

查看节点状态

启动nodemanager

[root@centos7-1 hadoop-2.9.2]# yarn-daemon.sh start nodemanager
starting nodemanager, logging to /opt/servers/hadoop-2.9.2/logs/yarn-root-nodemanager-centos7-1.out

查看进程状态

[root@centos7-1 hadoop-2.9.2]# jps
2275 NodeManager
2307 Jps
1768 NameNode
1885 DataNode

二 进入centos7-2

cd /opt/servers/hadoop-2.9.2

启动datanode

[root@centos7-2 hadoop-2.9.2]# hadoop-daemon.sh start datanode
starting datanode, logging to /opt/servers/hadoop-2.9.2/logs/hadoop-root-datanode-centos7-2.out

启动nodemanager

[root@centos7-2 hadoop-2.9.2]# yarn-daemon.sh start nodemanager
starting nodemanager, logging to /opt/servers/hadoop-2.9.2/logs/yarn-root-nodemanager-centos7-2.out

查看节点状态

[root@centos7-2 hadoop-2.9.2]# jps
1843 NodeManager
1734 DataNode
1878 Jps

三 进入centos7-3

cd /opt/servers/hadoop-2.9.2

启动seconderynamenode

[root@centos7-3 hadoop-2.9.2]# hadoop-daemon.sh start secondarynamenode
starting secondarynamenode, logging to /opt/servers/hadoop-2.9.2/logs/hadoop-root-secondarynamenode-centos7-3.out
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启动datanode

[root@centos7-2 hadoop-2.9.2]# hadoop-daemon.sh start datanode
starting datanode, logging to /opt/servers/hadoop-2.9.2/logs/hadoop-root-datanode-centos7-2.out

启动resorcemanager

[root@centos7-3 hadoop-2.9.2]#  yarn-daemon.sh start resourcemanager
starting resourcemanager, logging to /opt/servers/hadoop-2.9.2/logs/yarn-root-resourcemanager-centos7-3.out
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启动nodemanager

[root@centos7-3 hadoop-2.9.2]# yarn-daemon.sh start nodemanager
starting nodemanager, logging to /opt/servers/hadoop-2.9.2/logs/yarn-root-nodemanager-centos7-3.out

查看节点状态

[root@centos7-3 hadoop-2.9.2]# jps
2338 SecondaryNameNode
1738 DataNode
1852 ResourceManager
2412 NodeManager
2445 Jps