执行结果如下：
hadoop@master:~$ start-all.sh This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh Starting namenodes on [master] master: starting namenode, logging to /home/hadoop/hadoop-2.7.1/logs/hadoop-hadoop-namenode-master.out slave1: starting datanode, logging to /home/hadoop/hadoop-2.7.1/logs/hadoop-hadoop-datanode-slave1.out slave2: starting datanode, logging to /home/hadoop/hadoop-2.7.1/logs/hadoop-hadoop-datanode-slave2.out Starting secondary namenodes [0.0.0.0] 0.0.0.0: starting secondarynamenode, logging to /home/hadoop/hadoop-2.7.1/logs/hadoop-hadoop-secondarynamenode-master.out starting yarn daemons starting resourcemanager, logging to /home/hadoop/hadoop-2.7.1/logs/yarn-hadoop-resourcemanager-master.out slave1: starting nodemanager, logging to /home/hadoop/hadoop-2.7.1/logs/yarn-hadoop-nodemanager-slave1.out slave2: starting nodemanager, logging to /home/hadoop/hadoop-2.7.1/logs/yarn-hadoop-nodemanager-slave2.out