hadoop集群单点配置

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===================    ===============================
----------------hadoop集群搭建   -----------------------
======================       ===========================
192.168.75.7          255.255.255.0             192.168.75.2
00:50:56:27:0C:F1
----------------------虚拟机基础配置 -------------------
1.编辑硬件设备，设共享目录
2-添加hosts头

--------------------hosts头-----------------------
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
----------------------------------------------------

------------------------------System eth0 网络配置 ------root---------
----------------------- VM tool 安装 -----------------root-----------
1-虚拟机/安装VMware tool、双击打开VMwareTool tar包/解压到文件系统tmp
./tmp/vmware-tools-distrib/vmware-install.pl
reboot

1.网络桥接 设置物理地址
vi /etc/sysconfig/network
2.面板删连接配置，只剩System eth0
rm -rf /etc/udev/rules.d/70-persistent-net.rules
cp /mnt/hgfs/setup/hosts /etc/hosts
reboot
vi /etc/udev/rules.d/70-persistent-net.rules
vi /etc/sysconfig/network-scripts/ifcfg-eth0    物理地址大写

-------------------------ifcfg-eth0文件---------------------
DEVICE="eth0"
BOOTPROTO=none
IPV6INIT="yes"
NM_CONTROLLED="yes"
ONBOOT="yes"
TYPE="Ethernet"
IPADDR=192.168.1.120
PREFIX=24
GATEWAY=192.168.1.1
DNS1=192.168.1.1
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME="System eth0"
HWADDR=00:50:56:2A:C2:8D
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes

--------------------------------------------------------
service iptables stop
chkconfig iptables off
service network restart

-------------------- jdk 安装 -----------------root-------
 cp /mnt/hgfs/setup/jdk-8u211-linux-x64.rpm /opt/
rpm -ivh /mnt/hgfs/setup/jdk-8u211-linux-x64.rpm
which java
ll /usr/java/jdk1.8.0_161/bin/java        Java路径：/usr/java/jdk1.8.0_161
vi /etc/profile

----------------------profile 文件---------------
export JAVA_HOME=/usr/java/jdk1.8.0_161
export JRE_HOME=$JAVA/jre
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
-----------------------------------------------
***********************卸载JDK***********************************
rpm -qa|grep jdk
---看到：jdk-1.6.0_22-fcs
rpm -e --nodeps jdk-1.6.0_22-fcs
***************************************************************
source /etc/profile
java -version

===============  Hadoop 安装 ------先root后分配权限给Hadoop   =========
cp /mnt/hgfs/setup/hadoop-2.7.6.tar.gz /opt/
tar -zxvf /opt/hadoop-2.7.6.tar.gz -C /opt/
vi /etc/profile

----------------------profile 文件---------------
export HADOOP_DEV_HOME=/opt/hadoop-2.7.6
export PATH=$PATH:$HADOOP_DEV_HOME/bin
export PATH=$PATH:$HADOOP_DEV_HOME/sbin
export HADOOP_MAPARED_HOME=${HADOOP_DEV_HOME}
export HADOOP_COMMON_HOME=${HADOOP_DEV_HOME}
export HADOOP_HDFS_HOME=${HADOOP_DEV_HOME}
export YARN_HOME=${HADOOP_DEV_HOME}
export HADOOP_CONF_DIR=${HADOOP_DEV_HOME}/etc/hadoop
-----------------------------------------------
source /etc/profile

vi /opt/hadoop-2.7.6/etc/hadoop/hadoop-env.sh
----------------------hadoop-env.sh  文件---------------
export JAVA_HOME=/usr/java/jdk1.8.0_161
------------------------------------------------------------

vi /opt/hadoop-2.7.6/etc/hadoop/core-site.xml
-------- core-site.xml  文件-------要在/opt/hadoop-2.7.6/新建目录   /data/tmp---
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://cMater:9000</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/root/bigdata/hadoop-2.6.5/data/tmp</value>
</property>
</configuration>
-----------------------------------------------------------------------------

vi /opt/hadoop-2.7.6/etc/hadoop/hdfs-site.xml
------ hdfs-site.xml  文件----要在/opt/hadoop-2.7.6/新建目录   /data/cMater  /data/namenode  /data/checkpoint -------
<configuration>
<property>
<name>dfs.datanode.data.dir</name>
<value>/opt/hadoop-2.7.6/data/cMater</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>/opt/hadoop-2.7.6/data/namenode</value>
</property>
<property>
<name>dfs.namenode.checkpoint.dir</name>
<value>/opt/hadoop-2.7.6/data/checkpoint</value>
</property>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
</configuration>
------------------------------------------------------------
 mkdir -p /opt/hadoop-2.7.6/data/tmp

 mkdir -p /opt/hadoop-2.7.6/data/cMater
 mkdir -p /opt/hadoop-2.7.6/data/namenode
 mkdir -p /opt/hadoop-2.7.6/data/checkpoint

vi /opt/hadoop-2.7.6/etc/hadoop/yarn-site.xml
---------------------- yarn-site.xml  文件---------------
<configuration>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>cMater</value>
</property>
</configuration>
------------------------------------------------------------

cp /opt/hadoop-2.7.6/etc/hadoop/mapred-site.xml.template /opt/hadoop-2.7.6/etc/hadoop/mapred-site.xml
vi /opt/hadoop-2.7.6/etc/hadoop/mapred-site.xml
---------------------- mapred-site.xml 文件---------------
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
<property>
<name>mapreduce.jobtracker.staging.root.dir</name>
<value>/user</value>
</property>
</configuration>
------------------------------------------------------------

========================用户  权限======================
useradd hadoop
passwd hadoop
chmod u+w /etc/sudoers
vi /etc/sudoers

------------sudoers 文件配置---root    ALL=(ALL)       ALL下添加一行----
hadoop  ALL=(ALL)       ALL
----------------------------------------------------------------------
chmod u-w /etc/sudoers
chown -R hadoop:hadoop /opt/hadoop-2.7.6

============启动 Hadoop ========切换Hadoop用户=============
su hadoop
******格式化 HDFS****************
hdfs namenode -format

*******单点重复格式化处理********
rm -rf 进行清空
/data/tmp
/data/cMater
/data/namenode
/data/checkpoint
内的缓存

***********单点启动失败*********
检查core-site.xml、hdfs-site.xml 、yarn-site.xml、mapred-site.xml文件格式

source /etc/hosts    失败
--------------------单节点启动--------------------------------namenode----
//hadoop-daemon.sh start secondarynamenode
hadoop-daemon.sh start namenode
hadoop-daemon.sh start datanode
yarn-daemon.sh start resourcemanager
yarn-daemon.sh start nodemanager
mr-jobhistory-daemon.sh start historyserver
yarn-daemon.sh start proxyserver

//hadoop-daemon.sh stop secondarynamenode
hadoop-daemon.sh stop namenode
hadoop-daemon.sh stop datanode
yarn-daemon.sh stop resourcemanager
yarn-daemon.sh stop nodemanager
mr-jobhistory-daemon.sh stop historyserver
yarn-daemon.sh stop proxyserver

----------------
./opt/hadoop-2.7.6/sbin/hadoop-daemon.sh start namenode

-----------datanode----Hadoop找不到类时检查nodemanager是否拼写正确--------
hadoop-daemon.sh start datanode
yarn-daemon.sh start nodemanager

hadoop-daemon.sh stop datanode
yarn-daemon.sh stop nodemanager

-------------------端口解析-----------------
HDFS         50070         http服务的端口
yarn           8088           http服务的端口
proxyserver   WebAppProxyServer
history         JobHistoryServer
===========================================

--------------------HDFS 权限问题---------------------
useradd 20160216048       # root操作
passwd 20160216048          #root操作
sudo usermod -a -G hadoop 20160216048  # root操作     20160216048添加到Hadoop组
hadoop fs -put /opt/hadoop-2.7.6.tar.gz /root/   #hadoop操作,root无法上传
hadoop fs -chown -R 20160216048:hadoop /root/  #hadoop操作
hadoop dfs -chmod -R 755 /abc   #hadoop操作
hadoop dfsadmin -safemode leave  #解除hadoop的安全模式
hadoop dfs -chmod -R 777 /abc  #hadoop操作,修改权限，让组外用户进行操作
__________________________权限比重_______________________
drwxr-xr-x       -rw-r--r--
 d:文件夹         r:4          w:2         x:1

注意：hadoop fs -rm -r /tmp/ 与hadoop fs -rm -r /tmp没有区别！
==========================    ==========================
-------------------  HDFS 使用     ----------------------
=====================       ==========================

------------------杀掉当前正在执行的hadoop任务---------------
列出当前hadoop正在执行的jobs:    hadoop job -list
杀掉job: job_201212111628_11166：                    
[hadoop@192.168.10.11 bin]$ ./hadoop job -kill job_201212111628_11166

-----------------------Linux自定义命令----------------------
vi /root/.bashrc
alias 你自定的命令=系统原来的命令       如：alias hf='hadoop fs'

-----------------------------HDFS文件回传----------------------
hadoop fs -get /user/root/ds_out /mnt/hgfs/setup/data/

*****************************Linux补充 免密码登录***************
方法一：主从主机间要相互做一次
ssh-keygen -t rsa
ssh-copy-id -i ~/.ssh/id_rsa.pub cSlave01

方法二：
全部会话 ：
ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa
ssh-copy-id node11/node12/node13

------------------------------禁用IPV6-----------------------
## 禁用IPv6
echo "                   " >> /etc/modprobe.d/dist.conf
echo "alias net-pf-10 off" >> /etc/modprobe.d/dist.conf
echo "alias ipv6 off" >> /etc/modprobe.d/dist.conf
## 查看是否追加成功
tail /etc/modprobe.d/dist.conf

---------------------设置文件打开数目和用户最大进程数---------------
## 设置用户最大进程数
vim /etc/security/limits.conf
## 结尾添加以下内容
*       soft    nofile          32768
*       hard    nofile          1048576
*       soft    nproc           65536
*       hard    nproc           unlimited
*       soft    memlock         unlimited
*       hard    memlock         unlimited

---------------------------时区设置-------------------------
统一时区为东八区
我们国家的时区为东八区（+0800）：

#查看当前时区
date -R;cat /etc/sysconfig/clock

不是北京时间，要设置一下时区，方法如下，执行命令：
# 设置东八区时区为当前时区
rm -rf /etc/localtime
cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
# 手动同步下网络时间
ntpdate -u cn.pool.ntp.org

vim /etc/sysconfig/clock

ZONE="Asia/Shanghai"

在次查看
date -R;cat /etc/sysconfig/clock

----------------------------Linux操作系统系统语言采用------------------
-------------转英文---------------
# 查看操作系统系统语言
echo $LANG
# 修改操作系统系统语言
vim /etc/sysconfig/i18n
LANG="en_US.UTF-8"

----------------转中文------------
# 查看操作系统系统语言
echo $LANG
# 修改操作系统系统语言
vim /etc/sysconfig/i18n
LANG="zh_CN.UTF-8"