hadoop cluster configuration best practices

dns.hadoop.com. Dns.hadoop.com. in a 192.168.1.230 H1.hadoop.com. in a 192.168.1.231 H2.hadoop.com. in a 192.168.1.20. H3.hadoop.com. in a 192.168.1.233 H4.hadoop.com. in a 192.168.1.234 H5.hadoop.com. in a 192.168.1.235 H6.hadoop.com. in a 192.168.1.236 H7.hadoop.com. in a 192.168.1.237 H8.hadoop.com. in a 192.168.1.238 Configure reverse resolution File Cp named. localhost named.192.168.1.zone Add the following content: $ TTL 1D @ In soa dns.hadoop.com. grid.dns.hadoop.com ( 0; serial 1D; ref

Build the Ubuntu Hadoop clusterTools used: VMware, Hadoop-2.7.2.tar, Jdk-8u65-linux-x64.tar, Ubuntu-16.04-desktop-amd64.iso1. Install Ubuntu-16.04-desktop-amd64.iso on VMwareClick "Create Virtual Machine" è select "typical (recommended installation)" È click "Next"È click FinishModify/etc/hostnameVim hostnameSave exit Modify Etc/hosts127.0.0.1 localhost192.168.1.100 s100192.168.1.101 s101192.168.1.

export classpath=.: $JAVA _home/lib/tools.jar:$ Java_home/lib/dt.jar: $CLASSPATH(4) Source/etc/profile Verification: java-version Installing Hadoop Execute command (1) tar-zxvf hadoop-1.1.2.tar.gz (2) MV hadoop-1.1.2 Hadoop (3) vi/etc/profile Add the following: Export JAVA_HOME=/USR/LOCAL/JDK export hadoop_home=/usr/l

Virtual machine-based Hadoop cluster installation1. The software we needXshell, SSH secure, virtual machine, Linux centos64, Hadoop1.2.1 installation package2. Install the above software3, install Linux, there is no more elaboration4. Install the JDK firstMy path isjava_home=/usr/lib/jvm/jdk1.7.0_79Path= PATH: Java_home/binClasspath= J AV AH OM E /LIb/d T.JaR: Java_home/lib/t

In the home of two computers with VMware + RedHatLinuxAS6 + Hadoop-0.21.0 to build a 3 node Hadoop cluster, although it is already set up a similar cluster, I also ran Java API to operate HDFS and Map/reduce, but this time it was still challenged. Some small details and some omissions would be like a roller coaster. Th

/id_rsa.pub ~/.ssh/authorized_keys4) master native uses SSH localhost test:The first time you will be prompted whether "is you sure want to continue connecting (yes/no)?", enter Yes directly, the next time you enter SSH localhost will not be prompted.5) Modify the hosts for each node (MASTER,NODE1,NODE2,NODE3):Statistics add the following host list:The purpose is to use the SSH connection for the rear, without entering the IP, using the machine name.6) In order to ensure that master can automati

First, Hadoop downloadUse the 2.7.6 version, because the company production environment is this versionCD/optwget http://mirrors.hust.edu.cn/apache/hadoop/common/hadoop-2.7.6/ Hadoop-2.7.6.tar.gzSecond, the configuration fileReference Document: https://hadoop.apache.org/docs

file (clip)7. Delete a folder?Answer: RM-RF file (folder)8. Do I need to install zookeeper?The default value of HBASE_MANAGES_ZK in the Conf/hbase-env.sh configuration document is True, which indicates that HBase uses its own zookeeper instance. However, the instance can only serve hbase in standalone or pseudo-distributed mode. When installing full distribution mode, you need to configure your own zookeeper instance. After configuring the Hbase.zook

. Client:retrying Connect to server:hadoop-05/192.168.0.7:8032. Already tried 6 time (s); Retry policy is Retryuptomaximumcountwithfixedsleep (maxretries=10, sleeptime=1000 MILLISECONDS) ResourceManager not connected. Check that the Yarn-site.xml are all configured. However, the discovery port number is inconsistent with the default port number, so modify the The configuration file changes to the following: Rerun, the same error still occurs, and the

After the Hadoop cluster is set up, the Hadoop cluster is accessed locally via the Java API, as follows (see all node name information on the Hadoop cluster) Import org.apache.hadoop.conf.Configuration; Import Org.apache.hadoop.f

This article describes the configuration method for using the HDFs Java API.1, first solve the dependence, pomDependency> groupId>Org.apache.hadoopgroupId> Artifactid>Hadoop-clientArtifactid> version>2.7.2version> Scope>ProvidedScope> Dependency>2, configuration files, storage HDFs

-2.4.1.tar.gz-c/java/decompression hadoopls lib/native/See what files are in the extracted directory CD etc/hadoop/into the profile directory vim hadoop-env.sh Modify Profile environment variable (export java_home=/java/jdk/jdk1.7.0_65) *-site.xml*vim core-site.xml Modify configuration file (go to official website for parameter meaning) ./

If there is a place to look at the mask, take a look at the HDFs ha this articleThe official scheme is as follows Configuration target: Node1 Node2 Node3:3 Station ZookeeperNode1 Node2:2 sets of ResourceManager First configure Node1, configure Etc/hadoop/yarn-site.xml: Configuration etc/hadoop/mapred-site.xml: Cop

command[Email protected]:~/.ssh# cat id_rsa.pub >> master_key [email protected]:~/.ssh# SCP master_key [email Pro tected]:/root/.ssh/Write Authorized_keys[Email protected]:~/.ssh# cat Master_key >> Authorized_keys"Note": Each of the two machines completes the public key write operation5 Main Ideas Install JDKDetailed installation steps reference how to install the Oracle Java JDK on Ubuntu LinuxInstall compiled software in Ubuntu, the general step is to unzip the installation package, modify th

. [[email protected] mapreduce]# mapred Job-list the/ ./ - +: -: -INFO client. Rmproxy:connecting toResourceManager at/0.0. 0. 0:8032Total jobs:0JobId State StartTime UserName Queue priority usedcontainers rsvdcontainers usedmem rsvdmem neededmem AM inf OHadoop cluster SecurityHadoop comes with two security mechanisms : simple mechanism, Kerberos mechanism1, simple mechanism:The simple mechanism is a mechanism for the JAAS protocol to be combined wit

Reprinted from: http://www.cnblogs.com/spark-china/p/3941878.html Prepare a second, third machine running Ubuntu system in VMware; Building the second to third machine running Ubuntu in VMware is exactly the same as building the first machine, again not repeating it.Different points from installing the first Ubuntu machine are:1th: We name the second to third Ubuntu machine for Slave1, Slave2, as shown in:There are three virtual machines in the created VMware:2nd: To simplify the

Most Hadoop clusters adopt Kerberos as the authentication protocolInstalling the KDC Starting Kerberos authentication requires the installation of the KDC server and the necessary software. The command to install the KDC can be executed on any machine. Yum-y Install krb5-server krb5-lib krb5-auth-dialog krb5-workstation Next, install the Kerberos client and the command on the other nodes in the

Transferred from: http://blog.csdn.net/huyuxiang999/article/details/17691405First, the experimental environment:1, Hardware: 3 Dell Servers, CPU:2.27GHZ*16, Memory: 16GB, one for master, and the other 2 for slave.2, the system: all CentOS6.33, Hadoop version: CDH4.5, the use of the MapReduce version is not yarn, but Mapreduce1, the entire cluster under Cloudera Manager monitoring,

org.apache.hadoop.ipc.Client:Retrying Connect to server:0.0.0.0/0.0.0.0:8031. Already tried 7 time (s); Retry policy is Retryuptomaximumcountwithfixedsleep (maxretries=10, sleeptime=1000 MILLISECONDS) 2017-06-05 09:49:46,472 INFO org.apache.hadoop.ipc.Client:Retrying Connect to server:0.0.0.0/0.0.0.0:8031. Already tried 8 time (s); Retry policy is Retryuptomaximumcountwithfixedsleep (maxretries=10, sleeptime=1000 MILLISECONDS) 2017-06-05 09:49:47,474 INFO org.apache.hadoop.ipc.Client:Retrying C