hadoop cluster configuration best practices

1, add the configuration file to the project source directory (SRC) mapreduce.framework.name yarn Read the contents of the configuration file so that the project knows to submit to the cluster to run2, package the project into the Project source directory (SRC) 3, add a sentence in Java code

Hadoop Modes Pre-install Setup Creating a user SSH Setup Installing Java Install Hadoop Install in Standalone Mode Lets do a test Install in Pseudo distributed Mode Hadoop Setup Hadoop

Reprint: Hadoop Cluster time synchronization Test environment: 192.168.217.130 Master master.hadoop 192.168.217.131 node1 node1.hadoop 192.168.217.132 node2 node2.hadoopfirst, set the master server timeView local time and time zone [root@master ~]# date Mon Feb 09:54:09 CST 2017 Select time Zone [root@master ~]# tzselect [Root@master ~]# Cp/usr/shar E/zoneinfo/a

Rsa.pub, and then copy it to the master host and append to Authorized_keys. The final configuration succeeded as follows: 6. Installing Hadoop (all machines in a cluster will have Hadoop installed)Cd/usr/local/hadoopwget http://mirror.bit.edu.cn/apache/hadoop/common/

Tags: share port number USR data via SQL database my.cnf Chinese garbled problem MySQL installationMySQL installation for Hadoop---clusterOne:　　　　　　Two:　　 　　 Three:　　Four:　　 　　 Five:　　 　 Six:　　 　 Seven:　　 　 Eight: Modify database character: Solve Chinese garbled problem, mysql default is latin1, we want to change to Utf-81>　　　 　　　 2> Then we do modify:--> first we need to build a folder for MySQL at/etc/--and then copy/usr/sharemysql/my-medium.cof to/

id_rsa.pub[email protected]. ssh]$ LLTotal 8-RW-------. 1 Hadoop hadoop 1671 Feb 14:23 Id_rsa-rw-r--r--. 1 Hadoop hadoop 410 Feb 14:23 id_rsa.pub[email protected]. ssh]$ CP id_rsa.pub Authorized_keys[email protected]. ssh]$ LLTotal 12-rw-r--r--. 1 Hadoop

contentsHadoop Fs-tail/user/trunk/test.txt #查看 The last 1000 lines of the/user/trunk/test.txt fileHadoop fs-rm/user/trunk/test.txt #删除/user/trunk/test.txt fileHadoop fs-help ls #查看ls命令的帮助文档Two HDFS deployment　　　　　The main steps are as follows:1. Configure the installation environment for Hadoop;2. Configure the configuration file for Hadoop;3. Start the HDFs ser

Many new users have encountered problems with hadoop installation, configuration, deployment, and usage for the first time. This article is both a test summary and a reference for most beginners (of course, there are a lot of related information online ). Hardware environmentThere are two machines in total, one (as a Masters), one machine uses the VM to install two systems (as slaves), and all three system

SecondaryNameNode9579 ResourceManager9282 NameNode View jps on 192.168.1.106: 4463 DataNodeJps 49414535 NodeManager 15. Run hdfs dfsadmin-report on 192.168.1.105.Configured Capacity: 13460701184 (12.54 GB)Present Capacity: 5762686976 (5.37 GB)DFS Remaining: 5762662400 (5.37 GB)DFS Used: 24576 (24 KB)DFS Used %: 0.00%Under replicated blocks: 0Blocks with primary upt replicas: 0Missing blocks: 0 -------------------------------------------------Datanodes available: 1 (1 total, 0 dead) Live datanod

Hadoop-1.x installation and configuration 1. Install JDK and SSH before installing Hadoop. Hadoop is developed in Java. MapReduce and Hadoop compilation depend on JDK. Therefore, JDK1.6 or later must be installed first (JDK 1.6 is generally used in the actual production envi

second, Hadoop pseudo-distributed mode configuration The experiment needs to proceed after the previous stand-alone mode deployment 1. Configure Core-site.xml, Hdfs-site.xml,mapred-site.xml and Yarn-site.xml 1). Modify Core-site.xml: $ sudo gvim/usr/local/hadoop/etc/core-site.xml Common Configuration Item Descript

1. Before installing Hadoop, you need to install the JDK and SSH first.Hadoop is developed in Java language, and the operation of MapReduce and the compilation of Hadoop depend on the JDK. Therefore, you must first install JDK1.6 or later (JDK1.6 is generally used in a real-world production environment, because some components of Hadoop do not support JDK1.7 and

Ironfan Introduction In Serengeti, there are two most important and critical functions: one is virtual machine management, that is, creating and managing required virtual machines for a Hadoop cluster in vCenter; the other is cluster software installation and configuration management, that is,

, there is an. SSH directory Id_rsa private Key Id_rsa.pub Public Key Known_hosts via SSH link to this host, there will be a record here 2. Give the public key to the trusted host (native) Enter the Ssh-copy-id host name at the command line Ssh-copy-id Master Ssh-copy-id slave1 Ssh-copy-id Slave2 The password for the trusted host needs to be entered during replication 3. Verify, enter in command line: SSH Trust host name SSH Master SSH slave1 SSH slave2 If you are not prompted to enter a passwor

Apache Hadoop configuration Kerberos Guide Generally, the security of a Hadoop cluster is guaranteed using kerberos. After Kerberos is enabled, you must perform authentication. After verification, you can use the GRANT/REVOKE statement to control role-based access. This article describes how to configure kerberos in a

first time you log on to this host. Type "yes ". This will add the "recognition mark" of this host to "~ /. Ssh/know_hosts "file. This prompt is no longer displayed when you access this host for the second time. Note: Authentication refused: bad ownership or modes for directory/Root errors may be caused by permission issues or user groups. refer to the following documents. Http://recursive-design.com/blog/2010/09/14/ssh-authentication-refused/ Http://bbs.csdn.net/topics/380198627 Host

rsync Then confirm that you can use SSH to log on to localhost without a password Enter the SSH localhost command: SSH localhost Ssh-keygen-t dsa-P "-f ~ /. Ssh/id_dsa Cat ~ /. Ssh/id_dsa.pub> ~ /. Ssh/authorized_keys Note:-P is followed by two "" signs, indicating that the password is set to null. After completing the preceding configuration, decompress the package and configure hadoop. 1. decompress

ticktime=2000 # The number of ticks that the initial # Synchronization phase can take initlimit=10 # The number of ticks that can pass between # Sending a request and getting an acknowledgement Synclimit=5 # The directory where the snapshot is stored. Datadir=/home/frank/zookeeperinstall/data # The port at which the clients'll connect clientport=2222 server.1=192.168.0.100:2888:3888 server.2=192.168.0.102:2888:3888 server.3=192.168.0.103:2888:3888 Installation Very simple, download hbase-0.

NameNode30070 ResourceManager30231 NodeManager30407 Worker30586 Jps4. Configure Scala, Spark, and Hadoop environment variables to join the path for easy executionVI ~/.BASHRCExport hadoop_home=/users/ysisl/app/hadoop/hadoop-2.6.4Export scala_home=/users/ysisl/app/spark/scala-2.10.4Export spark_home=/users/ysisl/app/spark/spark-1.6.1-bin-hadoop2.6Export path= "${

installed, you can decompress the package directly here. I use the following directory structure, as shown in the following environment variables. After decompression, put the package in/usr/Java. You need to configure the environment variable, VIM/etc/profile. Export java_home =/usr/Java/jdk1.7.0 _ 60 Export jre_home =/usr/Java/jdk1.7.0 _ 60 Export classpath =.: $ java_home/lib/dt. jar: $ java_home/lib/tools. jar: $ jre_home/lib Export Path = $ path: $ java_home/bin: jre_home/bin Then ESC, sav