Linux系统下pid与pid文件及Hadoop更改pid文件存储位置
$ mkdir -p /opt/software/hadoop-2.8.1/pids $ jps10512 ResourceManager
8018 Jps
10004 SecondaryNameNode
9655 NameNode
9806 DataNode
10623 NodeManager
$ cd /opt/software/hadoop-2.8.1/sbin/
$ ./stop-dfs.sh
$ ./stop-yarn.sh
$ vi hadoop-daemon.sh
HADOOP_PID_DIR=/opt/software/hadoop-2.8.1/pids
$ vi yarn-daemon.sh
YARN_PID_DIR=/opt/software/hadoop-2.8.1/pids
$ ./start-dfs.sh
$ ./start-yarn.sh
$ jps
9201 SecondaryNameNode
9425 ResourceManager
9540 NodeManager
9828 Jps
8852 NameNode
8973 DataNode
#发现pid存储在新的位置
$ cd /opt/software/hadoop-2.8.1/pids/
$ ll
total 20
-rw-rw-r-- 1 hadoop hadoop 5 May 22 20:14 hadoop-hadoop-datanode.pid
-rw-rw-r-- 1 hadoop hadoop 5 May 22 20:14 hadoop-hadoop-namenode.pid
-rw-rw-r-- 1 hadoop hadoop 5 May 22 20:14 hadoop-hadoop-secondarynamenode.pid
-rw-rw-r-- 1 hadoop hadoop 5 May 22 20:15 yarn-hadoop-nodemanager.pid
-rw-rw-r-- 1 hadoop hadoop 5 May 22 20:15 yarn-hadoop-resourcemanager.pid
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