How to shut down and start Hadoop 2.7.4
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Environment description:
[root@hadp-master sbin] # hadoop version
Hadoop 2.7.4
First, the script package is all started and closed together.
1.1 start
[root@hadp-master sbin] #. / start-all.sh
This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh
Starting namenodes on [hadp-master]
Hadp-master: starting namenode, logging to / usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-namenode-hadp-master.out
Hadp-node2: starting datanode, logging to / usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-datanode-hadp-node2.out
Hadp-node1: starting datanode, logging to / usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-datanode-hadp-node1.out
Starting secondary namenodes [0.0.0.0]
0.0.0.0: starting secondarynamenode, logging to / usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-secondarynamenode-hadp-master.out
Starting yarn daemons
Starting resourcemanager, logging to / usr/local/hadoop/hadoop-2.7.4/logs/yarn-root-resourcemanager-hadp-master.out
Hadp-node2: starting nodemanager, logging to / usr/local/hadoop/hadoop-2.7.4/logs/yarn-root-nodemanager-hadp-node2.out
Hadp-node1: starting nodemanager, logging to / usr/local/hadoop/hadoop-2.7.4/logs/yarn-root-nodemanager-hadp-node1.out
Description: start all Hadoop daemons. Including NameNode, DataNode, Secondary NameNode, Yarn, Yarn-root-nodemanager
1.2 turn off
[root@hadp-master sbin] #. / stop-all.sh
This script is Deprecated. Instead use stop-dfs.sh and stop-yarn.sh
Stopping namenodes on [hadp-master]
Hadp-master: stopping namenode
Hadp-node2: stopping datanode
Hadp-node1: stopping datanode
Stopping secondary namenodes [0.0.0.0]
0.0.0.0: stopping secondarynamenode
Stopping yarn daemons
Stopping resourcemanager
Hadp-node2: no nodemanager to stop
Hadp-node1: no nodemanager to stop
No proxyserver to stop
Description: close all Hadoop daemons. Including NameNode, DataNode, Secondary NameNode, Yarn, resourcemanager
Second, module encapsulation starts and shuts down
2.1 start
[root@hadp-master sbin] #. / start-dfs.sh
Starting namenodes on [hadp-master]
Hadp-master: starting namenode, logging to / usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-namenode-hadp-master.out
Hadp-node1: starting datanode, logging to / usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-datanode-hadp-node1.out
Hadp-node2: starting datanode, logging to / usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-datanode-hadp-node2.out
Starting secondary namenodes [0.0.0.0]
0.0.0.0: starting secondarynamenode, logging to / usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-secondarynamenode-hadp-master.out
Description: start the Hadoop HDFS daemon NameNode, DataNode, SecondaryNameNode
[root@hadp-master sbin] #. / start-yarn.sh
Starting yarn daemons
Starting resourcemanager, logging to / usr/local/hadoop/hadoop-2.7.4/logs/yarn-root-resourcemanager-hadp-master.out
Hadp-node2: starting nodemanager, logging to / usr/local/hadoop/hadoop-2.7.4/logs/yarn-root-nodemanager-hadp-node2.out
Hadp-node1: starting nodemanager, logging to / usr/local/hadoop/hadoop-2.7.4/logs/yarn-root-nodemanager-hadp-node1.out
Description: start yarn daemons, yarn-root-resourcemanager, yarn-root-nodemanager
2.2 close
[root@hadp-master sbin] #. / stop-dfs.sh
Stopping namenodes on [hadp-master]
Hadp-master: stopping namenode
Hadp-node2: stopping datanode
Hadp-node1: stopping datanode
Stopping secondary namenodes [0.0.0.0]
0.0.0.0: stopping secondarynamenode
Description: stop the Hadoop HDFS daemon processes NameNode, DataNode, SecondaryNameNode
[root@hadp-master sbin] #. / stop-yarn.sh
Stopping yarn daemons
Stopping resourcemanager
Hadp-node1: no nodemanager to stop
Hadp-node2: no nodemanager to stop
No proxyserver to stop
Description: close yarn daemons, yarn-root-resourcemanager, nodemanager
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