hadoop常用信息（脚本、端口号、配置文件）_配置文件查看hdfs通信端口-优快云博客

本文介绍了Hadoop集群管理中涉及的脚本操作，包括节点间文件同步、集群启动以及查看Java进程。同时，详细列出了在Hadoop3和Hadoop2中HDFS、YARN和历史服务器的常用端口号，帮助理解集群的运行状态和交互方式。

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文章目录

脚本

节点之间同步文件

#!/bin/bash



if [ $# -lt 1 ]
then 
    echo not enough argument!
    exit;
fi

for host in hadoop1 hadoop2 hadoop3
do 
    echo  =======================$host=====================
    
    for file in $@
    do
       if [ -e $file ]
          then
	   	pdir=$(cd -P $(dirname $file); pwd)
		fname=$(basename $file)
		ssh $host "mkdir -p $pdir"
		rsync -av $pdir/$fname $host:$pdir
	  else
		echo $file does not exist!
       fi
    done
done

启动集群的hdfs 、yarn、历史记录服务器

#!/bin/bash

if [ $# -lt 1 ]
    then echo "not enought arguments"
    exit;
fi


case $1 in
"start")
	echo "=====================start hadoop================="
	echo "=====================start HDFS==================="
	ssh hadoop1 "/opt/module/hadoop-3.1.4/sbin/start-dfs.sh"
	echo "=====================start yarn==================="
	ssh hadoop2 "/opt/module/hadoop-3.1.4/sbin/start-yarn.sh"
	echo "=====================start history server=============="
	ssh hadoop2 "/opt/module/hadoop-3.1.4/bin/mapred --daemon start historyserver"
;;

"stop")
	echo "====================stop hadoop====================="
	echo "====================stop history server================="
	ssh hadoop2 "/opt/module/hadoop-3.1.4/bin/mapred --daemon stop historyserver"
	echo "====================stop yarn==========================="
	ssh hadoop2 "/opt/module/hadoop-3.1.4/sbin/stop-yarn.sh"
	echo "====================stop HDFS============================"
	ssh hadoop1 "/opt/module/hadoop-3.1.4/sbin/stop-dfs.sh"
;;
*)
	echo "wrong input arguments"
;;
esac

看所有节点上的java进程

#!/bin/bash

for host in hadoop1 hadoop2 hadoop3
do
	echo "================$host=================="
	ssh $host "jps"
done

端口号

hadoop3：
HDFS内部通信常用端口：8020/9000/9820
HDFS对用户的web端口：9870
Yarn查看任务的web端口：8088
历史服务器的web端口：19888

hadoop2：
HDFS内部通信常用端口：8020/9000
HDFS对用户的web端口：50070
Yarn查看任务的web端口：8088
历史服务器的web端口：19888

配置文件

版本	常用配置文件
hadoop3	core-site.xml hdfs-site.xml yarn-site.xml mapred-site.xml workers
hadoop2	core-site.xml hdfs-site.xml yarn-site.xml mapred-site.xml slaves