[hadoop@hadoop02 sbin]$ pwd
/hadoop/hadoop-2.8.2/sbin
[hadoop@hadoop02 sbin]$ ./start-dfs.sh
Starting namenodes on [hadoop02]
The authenticity of host 'hadoop02 (192.168.169.102)' can't be established.
ECDSA key fingerprint is f7:ef:fb:e5:7e:0f:59:40:63:23:99:9a:ca:e2:03:e8.
Are you sure you want to continue connecting (yes/no)? yes
hadoop02: Warning: Permanently added 'hadoop02,192.168.169.102' (ECDSA) to the list of known hosts.
hadoop02: starting namenode, logging to /hadoop/hadoop-2.8.2/logs/hadoop-hadoop-namenode-hadoop02.out
hadoop03: starting datanode, logging to /hadoop/hadoop-2.8.2/logs/hadoop-hadoop-datanode-hadoop03.out
hadoop01: starting datanode, logging to /hadoop/hadoop-2.8.2/logs/hadoop-hadoop-datanode-hadoop01.out
Starting secondary namenodes [hadoop02]
hadoop02: starting secondarynamenode, logging to /hadoop/hadoop-2.8.2/logs/hadoop-hadoop-secondarynamenode-hadoop02.out
[hadoop@hadoop02 sbin]$
验证
192.168.169.102上
[hadoop@hadoop02 sbin]$ ps -aux | grep namenode
hadoop 13502 3.0 6.2 2820308 241808 ? Sl 21:18 0:09 /usr/java/jdk1.8.0_151//bin/java -Dproc_namenode -Xmx1000m -Djava.net.preferIPv4Stack=true -Dhadoop.log.dir=/hadoop/hadoop-2.8.2/logs -Dhadoop.log.file=hadoop.log -Dhadoop.home.dir=/hadoop/hadoop-2.8.2 -Dhadoop.id.str=hadoop -Dhadoop.root.logger=INFO,console -Djava.library.path=/hadoop/hadoop-2.8.2/lib/native -Dhadoop.policy.file=hadoop-policy.xml -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv4Stack=true -Dhadoop.log.dir=/hadoop/hadoop-2.8.2/logs -Dhadoop.log.file=hadoop-hadoop-namenode-hadoop02.log -Dhadoop.home.dir=/hadoop/hadoop-2.8.2 -Dhadoop.id.str=hadoop -Dhadoop.root.logger=INFO,RFA -Djava.library.path=/hadoop/hadoop-2.8.2/lib/native -Dhadoop.policy.file=hadoop-policy.xml -Djava.net.preferIPv4Stack=true -Dhadoop.security.logger=INFO,RFAS -Dhdfs.audit.logger=INFO,NullAppender -Dhadoop.security.logger=INFO,RFAS -Dhdfs.audit.logger=INFO,NullAppender -Dhadoop.security.logger=INFO,RFAS -Dhdfs.audit.logger=INFO,NullAppender -Dhadoop.security.logger=INFO,RFAS org.apache.hadoop.hdfs.server.namenode.NameNode
hadoop 13849 2.1 4.5 2784012 174604 ? Sl 21:18 0:06 /usr/java/jdk1.8.0_151//bin/java -Dproc_secondarynamenode -Xmx1000m -Djava.net.preferIPv4Stack=true -Dhadoop.log.dir=/hadoop/hadoop-2.8.2/logs -Dhadoop.log.file=hadoop.log -Dhadoop.home.dir=/hadoop/hadoop-2.8.2 -Dhadoop.id.str=hadoop -Dhadoop.root.logger=INFO,console -Djava.library.path=/hadoop/hadoop-2.8.2/lib/native -Dhadoop.policy.file=hadoop-policy.xml -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv4Stack=true -Dhadoop.log.dir=/hadoop/hadoop-2.8.2/logs -Dhadoop.log.file=hadoop-hadoop-secondarynamenode-hadoop02.log -Dhadoop.home.dir=/hadoop/hadoop-2.8.2 -Dhadoop.id.str=hadoop -Dhadoop.root.logger=INFO,RFA -Djava.library.path=/hadoop/hadoop-2.8.2/lib/native -Dhadoop.policy.file=hadoop-policy.xml -Djava.net.preferIPv4Stack=true -Dhadoop.security.logger=INFO,RFAS -Dhdfs.audit.logger=INFO,NullAppender -Dhadoop.security.logger=INFO,RFAS -Dhdfs.audit.logger=INFO,NullAppender -Dhadoop.security.logger=INFO,RFAS -Dhdfs.audit.logger=INFO,NullAppender -Dhadoop.security.logger=INFO,RFAS org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode
hadoop 14264 0.0 0.0 112660 968 pts/1 S+ 21:23 0:00 grep --color=auto namenode
192.168.169.101上