C/C++教程
Centos7安装Hadoop
本文主要是介绍Centos7安装Hadoop，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！
1、设置静态ip网络/etc/sysconfigs/network-scripts/ifcfg-ens33，修改/etc/hosts，/etc/hostname，修改客户机win10的hosts文件（C:\Windows\System32\drivers\etc）
2、关闭防火墙
#查看防火墙状态
[root@bigdata01 ~]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
Active: inactive (dead)
Docs: man:firewalld(1)
#开启防火墙 [root@bigdata01 ~]# systemctl start firewalld #关闭防火墙 [root@bigdata01 ~]# systemctl stop firewalld #禁止开机自启 [root@bigdata01 ~]# systemctl disable firewalld
3、安装必要插件
yum install -y epel-release yum install -y psmisc nc net-tools rsync vim lrzsz ntp libzstd openssl-static tree iotop git
4、创建用户
[root@bigdata01 ~]# useradd bigdata [root@bigdata01 ~]# passwd bigdata Changing password for user atguigu. New password: BAD PASSWORD: The password is a palindrome Retype new password: passwd: all authentication tokens updated successfully. #密码bigdata #删除用户包括用户目录 [root@bigdata01 ~]# userdel -r username
5、配置用户具有root权限
[root@bigdata01 home]# visudo #查找到root，在root ALL=(ALL) ALL下增加bigdata行 bigdata ALL=(ALL) NOPASSWD:ALL
6、在/opt目录下创建文件夹
在/opt创建module、software文件夹，并修改所有者
[root@bigdata01 opt]# cd /opt [root@bigdata01 opt]# mkdir module [root@bigdata01 opt]# mkdir software [root@bigdata01 opt]# ll total 0 drwxr-xr-x. 2 root root 6 Jul 21 00:56 module drwxr-xr-x. 2 root root 6 Jul 21 00:56 software [root@bigdata01 opt]# chown bigdata:bigdata module [root@bigdata01 opt]# chown bigdata:bigdata software [root@bigdata01 opt]# ll total 0 drwxr-xr-x. 2 bigdata bigdata 6 Jul 21 00:56 module drwxr-xr-x. 2 bigdata bigdata 6 Jul 21 00:56 software
7、重启
[root@bigdata01 ~]# reboot
8、换bigdata用户登录
9、安装jdk
#卸载已安装的jdk [root@bigdata01 ~]# rpm -qa | grep -i java | xargs -n1 sudo rpm -e --nodeps rpm: no packages given for erase #将jdk导入/opt/software [root@bigdata01 software]# ls hadoop-3.1.3.tar.gz jdk-8u211-linux-x64.tar.gz #解压jdk包到module目录 [root@bigdata01 software]# tar -zxvf jdk-8u211-linux-x64.tar.gz -C /opt/module/ #解压完毕 [root@bigdata01 module]# ll total 0 drwxr-xr-x. 7 10 143 245 Apr 2 2019 jdk1.8.0_211
10、配置jdk环境变量
#进入profile.d目录 [root@bigdata01 module]# cd /etc/profile.d/ [root@bigdata01 profile.d]# ll total 64 -rw-r--r--. 1 root root 771 Aug 9 2019 256term.csh -rw-r--r--. 1 root root 841 Aug 9 2019 256term.sh -rw-r--r--. 1 root root 196 Mar 25 2017 colorgrep.csh -rw-r--r--. 1 root root 201 Mar 25 2017 colorgrep.sh -rw-r--r--. 1 root root 1741 Aug 6 2019 colorls.csh -rw-r--r--. 1 root root 1606 Aug 6 2019 colorls.sh -rw-r--r--. 1 root root 80 Oct 31 2018 csh.local -rw-r--r--. 1 root root 1706 Aug 9 2019 lang.csh -rw-r--r--. 1 root root 2703 Aug 9 2019 lang.sh -rw-r--r--. 1 root root 123 Jul 31 2015 less.csh -rw-r--r--. 1 root root 121 Jul 31 2015 less.sh -rw-r--r--. 1 root root 81 Oct 31 2018 sh.local -rw-r--r--. 1 root root 105 Dec 16 2020 vim.csh -rw-r--r--. 1 root root 269 Dec 16 2020 vim.sh -rw-r--r--. 1 root root 164 Jan 28 2014 which2.csh -rw-r--r--. 1 root root 169 Jan 28 2014 which2.sh [root@bigdata01 profile.d]# touch my_env.sh #如果提示权限不够则 [root@bigdata01 profile.d]# sudo touch my_env.sh #修改my_env [root@bigdata01 profile.d]# sudo vim my_env.sh
加入以下内容
#JAVA_HOME export JAVA_HOME=/opt/module/jdk1.8.0_211 export PATH=$PATH:$JAVA_HOME/bin
保存退出
#使配置生效 [root@bigdata01 profile.d]# source my_env.sh
#测试jdk安装是否成功 [root@bigdata01 profile.d]# java -version java version "1.8.0_211" Java(TM) SE Runtime Environment (build 1.8.0_211-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)
开始安装hadoop
11、上传到/opt/software后，先解压hadoop到module目录
[root@bigdata01 software]# ls hadoop-3.1.3.tar.gz jdk-8u211-linux-x64.tar.gz [root@bigdata01 software]# tar -zxvf hadoop-3.1.3.tar.gz -C /opt/module/ #查看解压后的文件夹 [root@bigdata01 module]# cd /opt/module/hadoop-3.1.3/ [root@bigdata01 hadoop-3.1.3]# ll total 176 drwxr-xr-x. 2 bigdata bigdata 183 Sep 12 2019 bin drwxr-xr-x. 3 bigdata bigdata 20 Sep 12 2019 etc drwxr-xr-x. 2 bigdata bigdata 106 Sep 12 2019 include drwxr-xr-x. 3 bigdata bigdata 20 Sep 12 2019 lib drwxr-xr-x. 4 bigdata bigdata 288 Sep 12 2019 libexec -rw-rw-r--. 1 bigdata bigdata 147145 Sep 4 2019 LICENSE.txt -rw-rw-r--. 1 bigdata bigdata 21867 Sep 4 2019 NOTICE.txt -rw-rw-r--. 1 bigdata bigdata 1366 Sep 4 2019 README.txt drwxr-xr-x. 3 bigdata bigdata 4096 Sep 12 2019 sbin drwxr-xr-x. 4 bigdata bigdata 31 Sep 12 2019 share
12、配置hadoop环境变量
#进入my_env.sh [bigdata@bigdata01 ~]$ sudo vi /etc/profile.d/my_env.sh #新增一行 export HADOOP_HOME=/opt/module/hadoop-3.1.3/ #在PASH中新增:$HADOOP_HOME/bin:$HADOOP_HOME/bin，修改后如下所示： export PATH=$PATH:$JAVA_HOME/bin:$HADOOP_HOME/bin:$HADOOP_HOME/sbin #使配置生效 [bigdata@bigdata01 hadoop-3.1.3]$ source /etc/profile.d/my_env.sh
13、测试安装是否成功
[bigdata@bigdata01 hadoop-3.1.3]$ hadoop version Hadoop 3.1.3 Source code repository https://gitbox.apache.org/repos/asf/hadoop.git -r ba631c436b806728f8ec2f54ab1e289526c90579 Compiled by ztang on 2019-09-12T02:47Z Compiled with protoc 2.5.0 From source with checksum ec785077c385118ac91aadde5ec9799 This command was run using /opt/module/hadoop-3.1.3/share/hadoop/common/hadoop-common-3.1.3.jar
14、将第一台hadoop中module目录下的内容分发到其他机器，使用scp安全拷贝工具
#/opt/module/* 代表module下所有内容，不加*代表只分发文件夹不包含文件 [bigdata@bigdata01 module]$ scp -r /opt/module/* bigdata@bigdata02:/opt/module
#开始执行 The authenticity of host 'bigdata02 (192.168.1.110)' can't be established. ECDSA key fingerprint is SHA256:GZv8fMnc5wu2r5t70oskCQH7VNAdcU44fZvAh4r5B7Y. ECDSA key fingerprint is MD5:16:bb:16:96:0b:29:0d:86:f4:14:f5:f3:3b:bb:ba:df. Are you sure you want to continue connecting (yes/no)?
输入yes
bigdata@bigdata02's password:
输入密码，继续执行直至结束。
#查看bigdata02mdule下是否分发 [bigdata@bigdata02 module]$ ll total 0 drwxr-xr-x. 9 bigdata bigdata 149 Jul 23 18:04 hadoop-3.1.3 drwxr-xr-x. 7 bigdata bigdata 245 Jul 23 18:04 jdk1.8.0_211
按以上步骤将module目录下的内容分发到其他机器中。
15、分发my_env.sh
#将第一台机器的/etc/profile.d/my_env.sh文件分发到其他机器 [bigdata@bigdata01 module]$ scp -r /etc/profile.d/my_env.sh root@bigdata02:/etc/profile.d/
#输入root密码，my_env.sh需要root权限 root@bigdata02's password: my_env.sh 100% 166 202.6KB/s 00:00
#使配置生效 [bigdata@bigdata02 module]$ source /etc/profile.d/my_env.sh
#测试是否成功 [bigdata@bigdata02 module]$ hadoop version Hadoop 3.1.3 Source code repository https://gitbox.apache.org/repos/asf/hadoop.git -r ba631c436b806728f8ec2f54ab1e289526c90579 Compiled by ztang on 2019-09-12T02:47Z Compiled with protoc 2.5.0 From source with checksum ec785077c385118ac91aadde5ec9799 This command was run using /opt/module/hadoop-3.1.3/share/hadoop/common/hadoop-common-3.1.3.jar [bigdata@bigdata02 module]$ java -version java version "1.8.0_211" Java(TM) SE Runtime Environment (build 1.8.0_211-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)
按以上步骤分发到其他机器。
16、rsync远程同步工具
rsync主要用于备份和镜像。具有速度快、避免复制相同内容和支持符号链接的优点。
rsync和scp区别：用rsync做文件的复制要比scp的速度快，rsync只对差异文件做更新。scp是把所有文件都复制过去。
#语法 rsync -av $pdir/$fname $user@hadoop$host:$pdir/$fname 命令 选项参数 要拷贝的文件路径/名称 目的用户@主机:目的路径/名称
17、设置SSH无密登录
在第一台机器生成密钥
#生成公钥私钥，停顿处一直敲回车三次至结束 [bigdata@bigdata01 .ssh]$ ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/home/bigdata/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /home/bigdata/.ssh/id_rsa. Your public key has been saved in /home/bigdata/.ssh/id_rsa.pub. The key fingerprint is: SHA256:Ptp/3gSe9O1eQOfj9bEbnNg6LV2MqFAZvPTzscrbEag bigdata@bigdata01 The key's randomart image is: +---[RSA 2048]----+ | . | | + | | . = . .| | + oo.o | | S. ++oBo| | .. +.+O+X| | o.Eooo*B=| | o .. +*.=+| | . ...ooo=oo| +----[SHA256]-----+ #生成两个文件id_rsa（私钥）、id_rsa.pub（公钥） [bigdata@bigdata01 .ssh]$ ll total 12 -rw-------. 1 bigdata bigdata 1679 Jul 26 09:27 id_rsa -rw-r--r--. 1 bigdata bigdata 399 Jul 26 09:27 id_rsa.pub -rw-r--r--. 1 bigdata bigdata 370 Jul 23 18:14 known_hosts #将公钥拷贝到要免密登录的目标机器上,其他机器参照此命令,本机也同样需要拷贝 [bigdata@bigdata01 .ssh]$ ssh-copy-id bigdata02 /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/home/bigdata/.ssh/id_rsa.pub" /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys bigdata@bigdata02's password: Permission denied, please try again. bigdata@bigdata02's password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'bigdata02'" and check to make sure that only the key(s) you wanted were added.
验证是否拷贝到目标机器
#在当前用户家目录cd到.ssh目录，包含authorized_keys则说明拷贝成功 [bigdata@bigdata03 ~]$ ll -a total 16 drwx------. 3 bigdata bigdata 93 Jul 23 21:58 . drwxr-xr-x. 3 root root 21 Jul 23 20:56 .. -rw-r--r--. 1 bigdata bigdata 18 Aug 8 2019 .bash_logout -rw-r--r--. 1 bigdata bigdata 193 Aug 8 2019 .bash_profile -rw-r--r--. 1 bigdata bigdata 231 Aug 8 2019 .bashrc drwx------. 2 bigdata bigdata 29 Jul 23 21:58 .ssh -rw-------. 1 bigdata bigdata 55 Jul 23 21:11 .Xauthority [bigdata@bigdata03 ~]$ pwd /home/bigdata [bigdata@bigdata03 ~]$ cd .ssh [bigdata@bigdata03 .ssh]$ ll total 4 -rw-------. 1 bigdata bigdata 399 Jul 23 21:58 authorized_keys
查看目标机器authorized_keys文件内容与第一台机器公钥一致
[bigdata@bigdata01 .ssh]$ cat id_rsa.pub ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDN7PlnJs+ES/e9uMimk7VlkDA4lI7OCU0OBT/yQbviWMrKDNY8aVP4/8pODNKZN1tcp9qtdRO3F3t+VeszraRp5PD080Ij7W6AuaECniHan0Obhx2diO88uNHNwLb1H+ozehc/UoBxO6+3v0HntDzGhJZGfOzmOGtHkztoWw5YdVYn4b8Q/iTN3h5cboBTlXrex8y7ohMilja5XpTtf344GKga46tfue9IjzIQ6r/C7k8Y6zfKhH8N4mJudMFwuIXYIe1X6OLU4M8bLEJEew8alZIobOKGr0aZCvP9r2eGay7q/aYzlW6lFui1x2hOEDgqeRCdNX2gbpaFh8BXVQu9 bigdata@bigdata01 [bigdata@bigdata03 .ssh]$ cat authorized_keys ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDN7PlnJs+ES/e9uMimk7VlkDA4lI7OCU0OBT/yQbviWMrKDNY8aVP4/8pODNKZN1tcp9qtdRO3F3t+VeszraRp5PD080Ij7W6AuaECniHan0Obhx2diO88uNHNwLb1H+ozehc/UoBxO6+3v0HntDzGhJZGfOzmOGtHkztoWw5YdVYn4b8Q/iTN3h5cboBTlXrex8y7ohMilja5XpTtf344GKga46tfue9IjzIQ6r/C7k8Y6zfKhH8N4mJudMFwuIXYIe1X6OLU4M8bLEJEew8alZIobOKGr0aZCvP9r2eGay7q/aYzlW6lFui1x2hOEDgqeRCdNX2gbpaFh8BXVQu9 bigdata@bigdata01
测试ssh
#成功登陆bigdata03机器 [bigdata@bigdata01 .ssh]$ ssh bigdata03 Last login: Fri Jul 23 22:09:51 2021 from bigdata01 [bigdata@bigdata03 ~]$
此时第一台机器已经配置完成，其他机器按此步骤生成公钥私钥，并将公钥分发拷贝到其他机器，确保后续集群时免密互相访问。
家目录下各文件说明
|
known_hosts |
记录ssh访问过计算机的公钥(public key) |
|
id_rsa |
生成的私钥 |
|
id_rsa.pub |
生成的公钥 |
|
authorized_keys |
存放授权过的无密登录服务器公钥 |
18、编写集群分发脚本
新建xsync文件并添加权限
[bigdata@bigdata01 ~]$ cd ~ [bigdata@bigdata01 ~]$ touch xsync [bigdata@bigdata01 ~]$ ll total 0 -rw-rw-r--. 1 bigdata bigdata 0 Jul 24 19:03 xsync #添加执行权限 [bigdata@bigdata01 ~]$ chmod u+x xsync [bigdata@bigdata01 ~]$ ll total 0 -rwxrw-r--. 1 bigdata bigdata 0 Jul 24 19:03 xsync
[bigdata@bigdata01 ~]$ vim xsync
#!/bin/bash
#1. 判断参数个数
if [ $# -lt 1 ]
then
echo Not Enough Arguement!
exit;
fi
#2. 遍历集群所有机器
for host in bigdata01 bigdata02 bigdata03
do
echo ==================== $host ====================
#3. 遍历所有目录，挨个发送
for file in $@
do
#4 判断文件是否存在
if [ -e $file ]
then
#5. 获取父目录
pdir=$(cd -P $(dirname $file); pwd)
#6. 获取当前文件的名称
fname=$(basename $file)
ssh $host "mkdir -p $pdir"
rsync -av $pdir/$fname $host:$pdir
else
echo $file does not exists!
fi
done
done
#分发某个文件到其他机器 [bigdata@bigdata01 ~]$ /home/bigdata/xsync xx.txt
集群规划
| bigdata01 | bigdata02 | bigdata03 | |
| HDFS |
NameNode DataNode |
DataNode |
SecondaryNameNode DataNode |
| YARN | NodeManager |
ResourceManager NodeManager |
NodeManager |
19、修改core-site.xml
[bigdata@bigdata01 hadoop]$ cd $HADOOP_HOME/etc/hadoop [bigdata@bigdata01 hadoop]$ vim core-site.xml
增加以下内容
<configuration>
<!--指定HDFS中NameNode的地址 -->
<property>
<name>fs.defaultFS</name>
<value>hdfs://bigdata01:8020</value>
</property>
<!-- 指定Hadoop运行时产生文件的存储目录 -->
<property>
<name>hadoop.tmp.dir</name>
<value>/opt/module/hadoop-3.1.3/data</value>
</property>
<!-- 通过web界面操作hdfs的权限 -->
<property>
<name>hadoop.http.staticuser.user</name>
<value>bigdata</value>
</property>
<!-- 配置该bigdata(superUser)允许通过代理访问的主机节点-供hive使用 -->
<property>
<name>hadoop.proxyuser.bigdata.hosts</name>
<value>*</value>
</property>
<!-- 配置该bigdata(superUser)允许通过代理用户所属组-供hive使用 -->
<property>
<name>hadoop.proxyuser.bigdata.groups</name>
<value>*</value>
</property>
</configuration>
20、配置hdfs-site.xml
[bigdata@bigdata01 hadoop]$ vi hdfs-site.xml
增加以下内容
<configuration>
<!-- nn web端访问地址-->
<property>
<name>dfs.namenode.http-address</name>
<value>bigdata01:9870</value>
</property>
<!-- 2nn web端访问地址-->
<property>
<name>dfs.namenode.secondary.http-address</name>
<value>bigdata03:9868</value>
</property>
<!-- 测试环境指定HDFS副本的数量1 -->
<property>
<name>dfs.replication</name>
<value>3</value>
</property>
</configuration>
21、配置yarn-site.xml
[bigdata@bigdata01 hadoop]$ vim yarn-site.xml
增加以下内容
<configuration>
<!-- Reducer获取数据的方式,指定MR走shuffle-->
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<!-- 指定YARN的ResourceManager地址-->
<property>
<name>yarn.resourcemanager.hostname</name>
<value>bigdata02</value>
</property>
<!-- 环境变量通过从NodeManagers的容器继承的环境属性，对于mapreduce应用程序，除了默认值 hadoop op_mapred_home,还有以下内容-->
<property>
<name>yarn.nodemanager.env-whitelist</name>
<value>JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,CLASSPATH_PREPEND_DISTCACHE,HADOOP_YARN_HOME,HADOOP_MAPRED_HOME</value>
</property>
<!-- 解决yarn在执行时遇到超出虚拟内存限制，防止container被kill -->
<property>
<name>yarn.nodemanager.pmem-check-enabled</name>
<value>false</value>
</property>
<property>
<name>yarn.nodemanager.vmem-check-enabled</name>
<value>false</value>
</property>
<!-- yarn容器允许分配的最大最小内存 -->
<property>
<name>yarn.scheduler.minimum-allocation-mb</name>
<value>512</value>
</property>
<property>
<name>yarn.scheduler.maximum-allocation-mb</name>
<value>4096</value>
</property>
<!-- yarn容器允许管理的物理内存大小 -->
<property>
<name>yarn.nodemanager.resource.memory-mb</name>
<value>4096</value>
</property>
<!-- 关闭yarn对物理内存和虚拟内存的限制检查 -->
<property>
<name>yarn.nodemanager.pmem-check-enabled</name>
<value>false</value>
</property>
<property>
<name>yarn.nodemanager.vmem-check-enabled</name>
<value>false</value>
</property>
</configuration>
22、配置mapred-site.xml
[bigdata@bigdata01 hadoop]$ vim mapred-site.xml
增加以下内容
<configuration>
<!-- 指定MR运行在Yarn上 -->
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
</configuration>
23、配置workers
[bigdata@bigdata01 hadoop]$ vim /opt/module/hadoop-3.1.3/etc/hadoop/workers #去掉已有内容，例如localhost #增加以下内容 bigdata01 bigdata02 bigdata03
24、分发以上已经配置好的hadoop配置文件
[bigdata@bigdata01 hadoop]$ /home/bigdata/xsync /opt/module/hadoop-3.1.3/etc/hadoop/ ==================== bigdata01 ==================== sending incremental file list sent 898 bytes received 18 bytes 1,832.00 bytes/sec total size is 108,615 speedup is 118.58 ==================== bigdata02 ==================== sending incremental file list hadoop/ hadoop/capacity-scheduler.xml hadoop/configuration.xsl hadoop/container-executor.cfg hadoop/core-site.xml hadoop/hadoop-env.cmd hadoop/hadoop-env.sh hadoop/hadoop-metrics2.properties hadoop/hadoop-policy.xml hadoop/hadoop-user-functions.sh.example hadoop/hdfs-site.xml hadoop/httpfs-env.sh hadoop/httpfs-log4j.properties hadoop/httpfs-signature.secret hadoop/httpfs-site.xml hadoop/kms-acls.xml hadoop/kms-env.sh hadoop/kms-log4j.properties hadoop/kms-site.xml hadoop/log4j.properties hadoop/mapred-env.cmd hadoop/mapred-env.sh hadoop/mapred-queues.xml.template hadoop/mapred-site.xml hadoop/ssl-client.xml.example hadoop/ssl-server.xml.example hadoop/user_ec_policies.xml.template hadoop/workers hadoop/yarn-env.cmd hadoop/yarn-env.sh hadoop/yarn-site.xml hadoop/yarnservice-log4j.properties hadoop/shellprofile.d/ hadoop/shellprofile.d/example.sh sent 6,103 bytes received 1,638 bytes 15,482.00 bytes/sec total size is 108,615 speedup is 14.03 ==================== bigdata03 ==================== sending incremental file list hadoop/ hadoop/capacity-scheduler.xml hadoop/configuration.xsl hadoop/container-executor.cfg hadoop/core-site.xml hadoop/hadoop-env.cmd hadoop/hadoop-env.sh hadoop/hadoop-metrics2.properties hadoop/hadoop-policy.xml hadoop/hadoop-user-functions.sh.example hadoop/hdfs-site.xml hadoop/httpfs-env.sh hadoop/httpfs-log4j.properties hadoop/httpfs-signature.secret hadoop/httpfs-site.xml hadoop/kms-acls.xml hadoop/kms-env.sh hadoop/kms-log4j.properties hadoop/kms-site.xml hadoop/log4j.properties hadoop/mapred-env.cmd hadoop/mapred-env.sh hadoop/mapred-queues.xml.template hadoop/mapred-site.xml hadoop/ssl-client.xml.example hadoop/ssl-server.xml.example hadoop/user_ec_policies.xml.template hadoop/workers hadoop/yarn-env.cmd hadoop/yarn-env.sh hadoop/yarn-site.xml hadoop/yarnservice-log4j.properties hadoop/shellprofile.d/ hadoop/shellprofile.d/example.sh sent 6,103 bytes received 1,638 bytes 5,160.67 bytes/sec total size is 108,615 speedup is 14.03
分发完成后，查看其他机器上是否已经分发
[bigdata@bigdata02 ~]$ cd /opt/module/hadoop-3.1.3/etc/hadoop/
[bigdata@bigdata02 hadoop]$ cat core-site.xml
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!--
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. See accompanying LICENSE file.
-->
<!-- Put site-specific property overrides in this file. -->
<configuration>
<!--指定HDFS中NameNode的地址 -->
<property>
<name>fs.defaultFS</name>
<value>hdfs://bigdata01:9820</value>
</property>
<!-- 指定Hadoop运行时产生文件的存储目录 -->
<property>
<name>hadoop.tmp.dir</name>
<value>/opt/module/hadoop-3.1.3/data</value>
</property>
<!-- 通过web界面操作hdfs的权限 -->
<property>
<name>hadoop.http.staticuser.user</name>
<value>bigdata</value>
</property>
</configuration>
[bigdata@bigdata02 hadoop]$
显示已经分发。
25、启动集群
#如果是第一次启动，需先格式化namenode [bigdata@bigdata01 hadoop-3.1.3]$ hdfs namenode -format #如因报错修改后需再次格式化时，需要把/data和/logs目录中的内容全部删除
执行结果
[bigdata@bigdata01 hadoop-3.1.3]$ hdfs namenode -format WARNING: /opt/module/hadoop-3.1.3//logs does not exist. Creating. 2021-07-24 22:11:53,132 INFO namenode.NameNode: STARTUP_MSG: /************************************************************ STARTUP_MSG: Starting NameNode STARTUP_MSG: host = bigdata01/192.168.1.100 STARTUP_MSG: args = [-format] STARTUP_MSG: version = 3.1.3 STARTUP_MSG: classpath = /opt/module/hadoop-3.1.3//etc/hadoop:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/accessors-smart-1.2.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/animal-sniffer-annotations-1.17.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/asm-5.0.4.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/audience-annotations-0.5.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/avro-1.7.7.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/checker-qual-2.5.2.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/commons-beanutils-1.9.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/commons-cli-1.2.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/commons-codec-1.11.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/commons-collections-3.2.2.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/commons-compress-1.18.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/commons-configuration2-2.1.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/commons-io-2.5.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/commons-lang-2.6.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/commons-lang3-3.4.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/commons-logging-1.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/commons-math3-3.1.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/commons-net-3.6.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/curator-client-2.13.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/curator-framework-2.13.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/curator-recipes-2.13.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/error_prone_annotations-2.2.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/failureaccess-1.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/gson-2.2.4.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/guava-27.0-jre.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/hadoop-annotations-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/hadoop-auth-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/htrace-core4-4.1.0-incubating.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/httpclient-4.5.2.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/httpcore-4.4.4.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/j2objc-annotations-1.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jackson-annotations-2.7.8.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jackson-core-2.7.8.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jackson-core-asl-1.9.13.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jackson-databind-2.7.8.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jackson-jaxrs-1.9.13.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jackson-mapper-asl-1.9.13.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jackson-xc-1.9.13.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/javax.servlet-api-3.1.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jaxb-api-2.2.11.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jaxb-impl-2.2.3-1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jcip-annotations-1.0-1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jersey-core-1.19.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jersey-json-1.19.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jersey-server-1.19.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jersey-servlet-1.19.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jettison-1.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jetty-http-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jetty-io-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jetty-security-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jetty-server-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jetty-servlet-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jetty-util-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jetty-webapp-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jetty-xml-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jsch-0.1.54.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/json-smart-2.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jsp-api-2.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jsr305-3.0.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jsr311-api-1.1.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerb-admin-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerb-client-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerb-common-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerb-core-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerb-crypto-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerb-identity-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerb-server-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerb-simplekdc-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerb-util-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerby-asn1-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerby-config-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerby-pkix-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerby-util-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/kerby-xdr-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/log4j-1.2.17.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/netty-3.10.5.Final.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/nimbus-jose-jwt-4.41.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/paranamer-2.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/protobuf-java-2.5.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/re2j-1.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/slf4j-api-1.7.25.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/snappy-java-1.0.5.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/stax2-api-3.1.4.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/token-provider-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/woodstox-core-5.0.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/zookeeper-3.4.13.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/jul-to-slf4j-1.7.25.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/lib/metrics-core-3.2.4.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/hadoop-common-3.1.3-tests.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/hadoop-common-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/hadoop-nfs-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/common/hadoop-kms-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/commons-daemon-1.0.13.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jetty-util-ajax-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/leveldbjni-all-1.8.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/netty-all-4.0.52.Final.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/okhttp-2.7.5.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/okio-1.6.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jersey-servlet-1.19.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jersey-json-1.19.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/hadoop-auth-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/commons-codec-1.11.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/log4j-1.2.17.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/httpclient-4.5.2.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/httpcore-4.4.4.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/commons-logging-1.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/nimbus-jose-jwt-4.41.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jcip-annotations-1.0-1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/json-smart-2.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/accessors-smart-1.2.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/asm-5.0.4.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/zookeeper-3.4.13.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/audience-annotations-0.5.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/netty-3.10.5.Final.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/curator-framework-2.13.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/curator-client-2.13.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/guava-27.0-jre.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/failureaccess-1.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jsr305-3.0.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/checker-qual-2.5.2.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/error_prone_annotations-2.2.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/j2objc-annotations-1.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/animal-sniffer-annotations-1.17.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerb-simplekdc-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerb-client-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerby-config-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerb-core-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerby-pkix-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerby-asn1-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerby-util-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerb-common-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerb-crypto-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/commons-io-2.5.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerb-util-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/token-provider-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerb-admin-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerb-server-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerb-identity-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/kerby-xdr-1.0.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jersey-core-1.19.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jsr311-api-1.1.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jersey-server-1.19.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/javax.servlet-api-3.1.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/json-simple-1.1.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jetty-server-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jetty-http-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jetty-util-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jetty-io-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jetty-webapp-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jetty-xml-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jetty-servlet-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jetty-security-9.3.24.v20180605.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/hadoop-annotations-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/commons-cli-1.2.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/commons-math3-3.1.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/commons-net-3.6.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/commons-collections-3.2.2.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jettison-1.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jaxb-impl-2.2.3-1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jaxb-api-2.2.11.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jackson-core-asl-1.9.13.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jackson-mapper-asl-1.9.13.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jackson-jaxrs-1.9.13.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jackson-xc-1.9.13.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/commons-lang-2.6.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/commons-beanutils-1.9.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/commons-configuration2-2.1.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/commons-lang3-3.4.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/avro-1.7.7.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/paranamer-2.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/snappy-java-1.0.5.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/commons-compress-1.18.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/re2j-1.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/protobuf-java-2.5.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/gson-2.2.4.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jsch-0.1.54.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/curator-recipes-2.13.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/htrace-core4-4.1.0-incubating.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jackson-databind-2.7.8.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jackson-annotations-2.7.8.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/jackson-core-2.7.8.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/stax2-api-3.1.4.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/lib/woodstox-core-5.0.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/hadoop-hdfs-3.1.3-tests.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/hadoop-hdfs-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/hadoop-hdfs-nfs-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/hadoop-hdfs-client-3.1.3-tests.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/hadoop-hdfs-client-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/hadoop-hdfs-native-client-3.1.3-tests.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/hadoop-hdfs-native-client-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/hadoop-hdfs-rbf-3.1.3-tests.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/hadoop-hdfs-rbf-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/hdfs/hadoop-hdfs-httpfs-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/mapreduce/lib/hamcrest-core-1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/mapreduce/lib/junit-4.11.jar:/opt/module/hadoop-3.1.3//share/hadoop/mapreduce/hadoop-mapreduce-client-app-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/mapreduce/hadoop-mapreduce-client-common-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/mapreduce/hadoop-mapreduce-client-core-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/mapreduce/hadoop-mapreduce-client-hs-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/mapreduce/hadoop-mapreduce-client-hs-plugins-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-3.1.3-tests.jar:/opt/module/hadoop-3.1.3//share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/mapreduce/hadoop-mapreduce-client-nativetask-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/mapreduce/hadoop-mapreduce-client-shuffle-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/mapreduce/hadoop-mapreduce-client-uploader-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/mapreduce/hadoop-mapreduce-examples-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/HikariCP-java7-2.4.12.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/aopalliance-1.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/dnsjava-2.1.7.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/ehcache-3.3.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/fst-2.50.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/geronimo-jcache_1.0_spec-1.0-alpha-1.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/guice-4.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/guice-servlet-4.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/jackson-jaxrs-base-2.7.8.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/jackson-jaxrs-json-provider-2.7.8.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/jackson-module-jaxb-annotations-2.7.8.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/java-util-1.9.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/javax.inject-1.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/jersey-client-1.19.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/jersey-guice-1.19.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/json-io-2.5.1.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/metrics-core-3.2.4.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/mssql-jdbc-6.2.1.jre7.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/objenesis-1.0.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/snakeyaml-1.16.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/lib/swagger-annotations-1.5.4.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-api-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-applications-distributedshell-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-applications-unmanaged-am-launcher-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-client-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-common-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-registry-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-server-applicationhistoryservice-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-server-common-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-server-nodemanager-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-server-resourcemanager-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-server-router-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-server-sharedcachemanager-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-server-tests-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-server-timeline-pluginstorage-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-server-web-proxy-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-services-api-3.1.3.jar:/opt/module/hadoop-3.1.3//share/hadoop/yarn/hadoop-yarn-services-core-3.1.3.jar STARTUP_MSG: build = https://gitbox.apache.org/repos/asf/hadoop.git -r ba631c436b806728f8ec2f54ab1e289526c90579; compiled by 'ztang' on 2019-09-12T02:47Z STARTUP_MSG: java = 1.8.0_211 ************************************************************/ 2021-07-24 22:11:53,191 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT] 2021-07-24 22:11:53,591 INFO namenode.NameNode: createNameNode [-format] Formatting using clusterid: CID-c9dc1591-0360-4e66-840a-fadaac6c6562 2021-07-24 22:11:55,469 INFO namenode.FSEditLog: Edit logging is async:true 2021-07-24 22:11:55,503 INFO namenode.FSNamesystem: KeyProvider: null 2021-07-24 22:11:55,507 INFO namenode.FSNamesystem: fsLock is fair: true 2021-07-24 22:11:55,507 INFO namenode.FSNamesystem: Detailed lock hold time metrics enabled: false 2021-07-24 22:11:55,526 INFO namenode.FSNamesystem: fsOwner = bigdata (auth:SIMPLE) 2021-07-24 22:11:55,526 INFO namenode.FSNamesystem: supergroup = supergroup 2021-07-24 22:11:55,526 INFO namenode.FSNamesystem: isPermissionEnabled = true 2021-07-24 22:11:55,527 INFO namenode.FSNamesystem: HA Enabled: false 2021-07-24 22:11:55,720 INFO common.Util: dfs.datanode.fileio.profiling.sampling.percentage set to 0. Disabling file IO profiling 2021-07-24 22:11:55,747 INFO blockmanagement.DatanodeManager: dfs.block.invalidate.limit: configured=1000, counted=60, effected=1000 2021-07-24 22:11:55,861 INFO blockmanagement.DatanodeManager: dfs.namenode.datanode.registration.ip-hostname-check=true 2021-07-24 22:11:55,866 INFO blockmanagement.BlockManager: dfs.namenode.startup.delay.block.deletion.sec is set to 000:00:00:00.000 2021-07-24 22:11:55,867 INFO blockmanagement.BlockManager: The block deletion will start around 2021 Jul 24 22:11:55 2021-07-24 22:11:55,869 INFO util.GSet: Computing capacity for map BlocksMap 2021-07-24 22:11:55,869 INFO util.GSet: VM type = 64-bit 2021-07-24 22:11:55,874 INFO util.GSet: 2.0% max memory 235.9 MB = 4.7 MB 2021-07-24 22:11:55,874 INFO util.GSet: capacity = 2^19 = 524288 entries 2021-07-24 22:11:55,897 INFO blockmanagement.BlockManager: dfs.block.access.token.enable = false 2021-07-24 22:11:55,986 INFO Configuration.deprecation: No unit for dfs.namenode.safemode.extension(30000) assuming MILLISECONDS 2021-07-24 22:11:55,986 INFO blockmanagement.BlockManagerSafeMode: dfs.namenode.safemode.threshold-pct = 0.9990000128746033 2021-07-24 22:11:55,986 INFO blockmanagement.BlockManagerSafeMode: dfs.namenode.safemode.min.datanodes = 0 2021-07-24 22:11:55,986 INFO blockmanagement.BlockManagerSafeMode: dfs.namenode.safemode.extension = 30000 2021-07-24 22:11:55,987 INFO blockmanagement.BlockManager: defaultReplication = 3 2021-07-24 22:11:55,987 INFO blockmanagement.BlockManager: maxReplication = 512 2021-07-24 22:11:55,987 INFO blockmanagement.BlockManager: minReplication = 1 2021-07-24 22:11:55,987 INFO blockmanagement.BlockManager: maxReplicationStreams = 2 2021-07-24 22:11:55,987 INFO blockmanagement.BlockManager: redundancyRecheckInterval = 3000ms 2021-07-24 22:11:55,987 INFO blockmanagement.BlockManager: encryptDataTransfer = false 2021-07-24 22:11:55,987 INFO blockmanagement.BlockManager: maxNumBlocksToLog = 1000 2021-07-24 22:11:56,115 INFO namenode.FSDirectory: GLOBAL serial map: bits=24 maxEntries=16777215 2021-07-24 22:11:56,154 INFO util.GSet: Computing capacity for map INodeMap 2021-07-24 22:11:56,154 INFO util.GSet: VM type = 64-bit 2021-07-24 22:11:56,154 INFO util.GSet: 1.0% max memory 235.9 MB = 2.4 MB 2021-07-24 22:11:56,154 INFO util.GSet: capacity = 2^18 = 262144 entries 2021-07-24 22:11:56,154 INFO namenode.FSDirectory: ACLs enabled? false 2021-07-24 22:11:56,154 INFO namenode.FSDirectory: POSIX ACL inheritance enabled? true 2021-07-24 22:11:56,154 INFO namenode.FSDirectory: XAttrs enabled? true 2021-07-24 22:11:56,155 INFO namenode.NameNode: Caching file names occurring more than 10 times 2021-07-24 22:11:56,195 INFO snapshot.SnapshotManager: Loaded config captureOpenFiles: false, skipCaptureAccessTimeOnlyChange: false, snapshotDiffAllowSnapRootDescendant: true, maxSnapshotLimit: 65536 2021-07-24 22:11:56,197 INFO snapshot.SnapshotManager: SkipList is disabled 2021-07-24 22:11:56,217 INFO util.GSet: Computing capacity for map cachedBlocks 2021-07-24 22:11:56,217 INFO util.GSet: VM type = 64-bit 2021-07-24 22:11:56,217 INFO util.GSet: 0.25% max memory 235.9 MB = 603.8 KB 2021-07-24 22:11:56,217 INFO util.GSet: capacity = 2^16 = 65536 entries 2021-07-24 22:11:56,234 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.window.num.buckets = 10 2021-07-24 22:11:56,234 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.num.users = 10 2021-07-24 22:11:56,234 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.windows.minutes = 1,5,25 2021-07-24 22:11:56,238 INFO namenode.FSNamesystem: Retry cache on namenode is enabled 2021-07-24 22:11:56,238 INFO namenode.FSNamesystem: Retry cache will use 0.03 of total heap and retry cache entry expiry time is 600000 millis 2021-07-24 22:11:56,240 INFO util.GSet: Computing capacity for map NameNodeRetryCache 2021-07-24 22:11:56,240 INFO util.GSet: VM type = 64-bit 2021-07-24 22:11:56,240 INFO util.GSet: 0.029999999329447746% max memory 235.9 MB = 72.5 KB 2021-07-24 22:11:56,240 INFO util.GSet: capacity = 2^13 = 8192 entries 2021-07-24 22:11:56,299 INFO namenode.FSImage: Allocated new BlockPoolId: BP-1046687142-192.168.1.100-1627135916279 2021-07-24 22:11:56,322 INFO common.Storage: Storage directory /opt/module/hadoop-3.1.3/data/dfs/name has been successfully formatted. 2021-07-24 22:11:56,400 INFO namenode.FSImageFormatProtobuf: Saving image file /opt/module/hadoop-3.1.3/data/dfs/name/current/fsimage.ckpt_0000000000000000000 using no compression 2021-07-24 22:11:56,702 INFO namenode.FSImageFormatProtobuf: Image file /opt/module/hadoop-3.1.3/data/dfs/name/current/fsimage.ckpt_0000000000000000000 of size 394 bytes saved in 0 seconds . 2021-07-24 22:11:56,738 INFO namenode.NNStorageRetentionManager: Going to retain 1 images with txid >= 0 2021-07-24 22:11:56,754 INFO namenode.FSImage: FSImageSaver clean checkpoint: txid = 0 when meet shutdown. 2021-07-24 22:11:56,755 INFO namenode.NameNode: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down NameNode at bigdata01/192.168.1.100 ************************************************************/View Code
#查看格式化后的目录结构，多了data和log [bigdata@bigdata01 ~]$ cd /opt/module/hadoop-3.1.3/ [bigdata@bigdata01 hadoop-3.1.3]$ ll total 176 drwxr-xr-x. 2 bigdata bigdata 183 Sep 12 2019 bin drwxrwxr-x. 3 bigdata bigdata 17 Jul 24 22:11 data drwxr-xr-x. 3 bigdata bigdata 20 Sep 12 2019 etc drwxr-xr-x. 2 bigdata bigdata 106 Sep 12 2019 include drwxr-xr-x. 3 bigdata bigdata 20 Sep 12 2019 lib drwxr-xr-x. 4 bigdata bigdata 288 Sep 12 2019 libexec -rw-rw-r--. 1 bigdata bigdata 147145 Sep 4 2019 LICENSE.txt drwxrwxr-x. 2 bigdata bigdata 40 Jul 24 22:11 logs -rw-rw-r--. 1 bigdata bigdata 21867 Sep 4 2019 NOTICE.txt -rw-rw-r--. 1 bigdata bigdata 1366 Sep 4 2019 README.txt drwxr-xr-x. 3 bigdata bigdata 4096 Sep 12 2019 sbin drwxr-xr-x. 4 bigdata bigdata 31 Sep 12 2019 share
#启动hdfs [bigdata@bigdata01 hadoop-3.1.3]$ start-dfs.sh Starting namenodes on [bigdata01] Starting datanodes bigdata03: WARNING: /opt/module/hadoop-3.1.3//logs does not exist. Creating. bigdata02: WARNING: /opt/module/hadoop-3.1.3//logs does not exist. Creating. Starting secondary namenodes [bigdata03] #警告是代表logs里有些文件不存在，会自动创建。
#在配置了ResourceManager的节点（bigdata02）启动yarn [bigdata@bigdata02 ~]$ start-yarn.sh Starting resourcemanager Starting nodemanagers
#验证集群进程信息 执行jps命令可以查看集群的进程信息 #查看bigdata01 [bigdata@bigdata01 hadoop-3.1.3]$ jps 10368 DataNode 10712 NodeManager 10253 NameNode 10815 Jps #查看bigdata02 [bigdata@bigdata02 ~]$ jps 9762 DataNode 9959 ResourceManager 10071 NodeManager 10409 Jps #查看bigdata03 [bigdata@bigdata03 ~]$ jps 9856 DataNode 10274 Jps 9955 SecondaryNameNode 10165 NodeManager
26、查错
#查看logs目录下的log信息，优先查看namenode [bigdata@bigdata01 logs]$ cd $HADOOP_HOME/logs [bigdata@bigdata01 logs]$ ll total 124 -rw-rw-r--. 1 bigdata bigdata 32231 Jul 25 10:43 hadoop-bigdata-datanode-bigdata01.log -rw-rw-r--. 1 bigdata bigdata 690 Jul 25 10:27 hadoop-bigdata-datanode-bigdata01.out -rw-rw-r--. 1 bigdata bigdata 42593 Jul 25 10:57 hadoop-bigdata-namenode-bigdata01.log -rw-rw-r--. 1 bigdata bigdata 690 Jul 25 10:27 hadoop-bigdata-namenode-bigdata01.out -rw-rw-r--. 1 bigdata bigdata 35772 Jul 25 11:19 hadoop-bigdata-nodemanager-bigdata01.log -rw-rw-r--. 1 bigdata bigdata 2206 Jul 25 11:10 hadoop-bigdata-nodemanager-bigdata01.out -rw-rw-r--. 1 bigdata bigdata 0 Jul 24 22:11 SecurityAuth-bigdata.audit drwxr-xr-x. 2 bigdata bigdata 6 Jul 25 11:19 userlogs
27、jpscall脚本
[bigdata@bigdata01 bin]$ cd $HADOOP_HOME/bin [bigdata@bigdata01 bin]$ touch jpscall.sh [bigdata@bigdata01 bin]$ ll total 996 -rwxr-xr-x. 1 bigdata bigdata 441936 Sep 12 2019 container-executor -rwxr-xr-x. 1 bigdata bigdata 8707 Sep 12 2019 hadoop -rwxr-xr-x. 1 bigdata bigdata 11265 Sep 12 2019 hadoop.cmd -rwxr-xr-x. 1 bigdata bigdata 11026 Sep 12 2019 hdfs -rwxr-xr-x. 1 bigdata bigdata 8081 Sep 12 2019 hdfs.cmd -rw-rw-r--. 1 bigdata bigdata 0 Jul 25 12:48 jpscall.sh -rwxr-xr-x. 1 bigdata bigdata 6237 Sep 12 2019 mapred -rwxr-xr-x. 1 bigdata bigdata 6311 Sep 12 2019 mapred.cmd -rwxr-xr-x. 1 bigdata bigdata 483728 Sep 12 2019 test-container-executor -rwxr-xr-x. 1 bigdata bigdata 11888 Sep 12 2019 yarn -rwxr-xr-x. 1 bigdata bigdata 12840 Sep 12 2019 yarn.cmd #查看新建的jpscall.sh没有执行权限，赋予 [bigdata@bigdata01 bin]$ chmod u+x jpscall.sh [bigdata@bigdata01 bin]$ ll total 996 -rwxr-xr-x. 1 bigdata bigdata 441936 Sep 12 2019 container-executor -rwxr-xr-x. 1 bigdata bigdata 8707 Sep 12 2019 hadoop -rwxr-xr-x. 1 bigdata bigdata 11265 Sep 12 2019 hadoop.cmd -rwxr-xr-x. 1 bigdata bigdata 11026 Sep 12 2019 hdfs -rwxr-xr-x. 1 bigdata bigdata 8081 Sep 12 2019 hdfs.cmd -rwxrw-r--. 1 bigdata bigdata 0 Jul 25 12:48 jpscall.sh -rwxr-xr-x. 1 bigdata bigdata 6237 Sep 12 2019 mapred -rwxr-xr-x. 1 bigdata bigdata 6311 Sep 12 2019 mapred.cmd -rwxr-xr-x. 1 bigdata bigdata 483728 Sep 12 2019 test-container-executor -rwxr-xr-x. 1 bigdata bigdata 11888 Sep 12 2019 yarn -rwxr-xr-x. 1 bigdata bigdata 12840 Sep 12 2019 yarn.cmd
#添加脚本内容，用于查看所有机器上的jps进程
[bigdata@bigdata01 bin]$ vim jpscall.sh
#添加以下内容：
#!/bin/bash
for host in bigdata01 bigdata02 bigdata03
do
echo "===================$host====================="
ssh $host jps
done
28、mycluster脚本
#新建脚本用来一次性启动集群里hdfs、yarn服务 [bigdata@bigdata01 bin]$ touch mycluster.sh [bigdata@bigdata01 bin]$ chmod u+x mycluster.sh
添加以下内容
#!/bin/bash
if [ $# -ne 1 ]
then
echo "error!"
exit
fi
case $1 in
"start")
ssh bigdata01 $HADOOP_HOME/sbin/start-dfs.sh
ssh bigdata02 $HADOOP_HOME/sbin/start-yarn.sh
;;
"stop")
ssh bigdata01 $HADOOP_HOME/sbin/stop-dfs.sh
ssh bigdata02 $HADOOP_HOME/sbin/stop-yarn.sh
;;
*)
echo "error!"
;;
esac
执行mycluster.sh
[bigdata@bigdata01 bin]$ ./mycluster.sh stop Stopping namenodes on [bigdata01] Stopping datanodes Stopping secondary namenodes [bigdata03] Stopping nodemanagers Stopping resourcemanager [bigdata@bigdata01 bin]$ jpscall.sh ===================bigdata01===================== 2534 Jps ===================bigdata02===================== 2314 Jps ===================bigdata03===================== 1913 Jps [bigdata@bigdata01 bin]$ mycluster.sh start Starting namenodes on [bigdata01] Starting datanodes Starting secondary namenodes [bigdata03] Starting resourcemanager Starting nodemanagers [bigdata@bigdata01 bin]$ jpscall.sh ===================bigdata01===================== 2834 DataNode 3128 NodeManager 2713 NameNode 3247 Jps ===================bigdata02===================== 2672 NodeManager 2555 ResourceManager 3021 Jps 2382 DataNode ===================bigdata03===================== 2087 SecondaryNameNode 2168 NodeManager 1981 DataNode 2285 JpsView Code
29、查看web页面
NameNode：http://bigdata01:9870
ResourceManager:http://bigdata02:8088
SecondaryNameNode:http://bigdata03:9868
SecondaryNameNode地址默认为空内容，需配置
步骤如下：
[bigdata@bigdata01 bin]$ cd $HADOOP_HOME/share/hadoop/hdfs/webapps/static
[bigdata@bigdata01 static]$ vim dfs-dust.js
#在一般编辑状态输入:set nu将编号显示出来
#将第61行内容：
return moment(Number(v)).format('ddd MMM DD HH:mm:ss ZZ YYYY');
#修改为：
return new Date(Number(v)).toLocaleString();
#将修改好的js文件分发出去 [bigdata@bigdata01 static]$ /home/bigdata/xsync ./dfs-dust.js ==================== bigdata01 ==================== sending incremental file list sent 67 bytes received 12 bytes 158.00 bytes/sec total size is 3,445 speedup is 43.61 ==================== bigdata02 ==================== sending incremental file list dfs-dust.js sent 811 bytes received 65 bytes 1,752.00 bytes/sec total size is 3,445 speedup is 3.93 ==================== bigdata03 ==================== sending incremental file list dfs-dust.js sent 811 bytes received 65 bytes 584.00 bytes/sec total size is 3,445 speedup is 3.93
清除浏览器缓存后刷新SecondaryNameNode:http://bigdata03:9868/status.html，内容即可正常显示。
30、配置历史服务器
为了查看程序的历史运行情况，需要配置一下历史服务器。具体配置步骤如下：
#配置mapred-site.xml
[bigdata@bigdata01 ~]$ cd $HADOOP_HOME/etc/hadoop
[bigdata@bigdata01 hadoop]$ vim mapred-site.xml
#在<configuration></configuration>标签里增加以下内容
<!-- 历史服务器端地址 -->
<property>
<name>mapreduce.jobhistory.address</name>
<value>bigdata01:10020</value>
</property>
<!-- 历史服务器web端地址 -->
<property>
<name>mapreduce.jobhistory.webapp.address</name>
<value>bigdata01:19888</value>
</property>
#将修改的文件分发出去 [bigdata@bigdata01 hadoop]$ /home/bigdata/xsync ./ ==================== bigdata01 ==================== sending incremental file list sent 864 bytes received 13 bytes 1,754.00 bytes/sec total size is 108,903 speedup is 124.18 ==================== bigdata02 ==================== sending incremental file list ./ mapred-site.xml sent 1,407 bytes received 51 bytes 972.00 bytes/sec total size is 108,903 speedup is 74.69 ==================== bigdata03 ==================== sending incremental file list ./ mapred-site.xml sent 1,407 bytes received 51 bytes 972.00 bytes/sec total size is 108,903 speedup is 74.69
#启动历史服务器 [bigdata@bigdata01 hadoop]$ mapred --daemon start historyserver #jps查看JobHistoryServer是否已经启动 [bigdata@bigdata01 hadoop]$ jps 2834 DataNode 3911 Jps 3128 NodeManager 2713 NameNode 3854 JobHistoryServer
查看web界面，http://bigdata01:19888/jobhistory
31、配置日志聚集
日志聚集概念：应用运行完成以后，将程序运行日志信息上传到HDFS系统上。
日志聚集功能好处：可以方便的查看到程序运行详情，方便开发调试。
注意：开启日志聚集功能，需要重新启动NodeManager 、ResourceManager和HistoryManager。
[bigdata@bigdata01 hadoop]$ vim yarn-site.xml
#在<configuration></configuration>标签里增加如下内容：
<!-- 开启日志聚集 -->
<property>
<name>yarn.log-aggregation-enable</name>
<value>true</value>
</property>
<!-- 访问路径-->
<property>
<name>yarn.log.server.url</name>
<value>http://bigdata01:19888/jobhistory/logs</value>
</property>
<!-- 保存的时间7天 -->
<property>
<name>yarn.log-aggregation.retain-seconds</name>
<value>604800</value>
</property>
#将修改后的yarn-site.xml分发出去 [bigdata@bigdata01 hadoop]$ /home/bigdata/xsync ./yarn-site.xml ==================== bigdata01 ==================== sending incremental file list sent 69 bytes received 12 bytes 162.00 bytes/sec total size is 2,455 speedup is 30.31 ==================== bigdata02 ==================== sending incremental file list yarn-site.xml sent 1,179 bytes received 53 bytes 821.33 bytes/sec total size is 2,455 speedup is 1.99 ==================== bigdata03 ==================== sending incremental file list yarn-site.xml sent 1,179 bytes received 53 bytes 821.33 bytes/sec total size is 2,455 speedup is 1.99
#重启服务 [bigdata@bigdata01 hadoop]$ mycluster stop -bash: mycluster: command not found [bigdata@bigdata01 hadoop]$ mycluster.sh stop Stopping namenodes on [bigdata01] Stopping datanodes Stopping secondary namenodes [bigdata03] Stopping nodemanagers Stopping resourcemanager [bigdata@bigdata01 hadoop]$ jps 4507 Jps 3854 JobHistoryServer [bigdata@bigdata01 hadoop]$ mapred --daemon stop historyserver #启动 [bigdata@bigdata01 hadoop]$ mycluster.sh start Starting namenodes on [bigdata01] Starting datanodes Starting secondary namenodes [bigdata03] Starting resourcemanager Starting nodemanagers [bigdata@bigdata01 hadoop]$ mapred --daemon start historyserver [bigdata@bigdata01 hadoop]$ jps 4720 NameNode 5138 NodeManager 4851 DataNode 5347 Jps 5289 JobHistoryServer
32、集群时间同步，将bigdata01作为时间服务器，将时间定时同步到其他机器。在学习过程中不建议开启时间同步，此处只做了解。
#bigdata01关闭ntp服务和自启动 [bigdata@bigdata01 hadoop]$ sudo systemctl stop ntpd [bigdata@bigdata01 hadoop]$ sudo systemctl disable ntpd
修改ntp.conf文件
授权192.168.1网段上的所有机器可以从这台机器上查询和同步时间
[bigdata@bigdata01 hadoop]$ sudo vim /etc/ntp.conf
去掉以下内容的注释：
#restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap
修改为：
restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap
修改不使用互联网时间
将以下内容注释：
server 0.centos.pool.ntp.org iburst server 1.centos.pool.ntp.org iburst server 2.centos.pool.ntp.org iburst server 3.centos.pool.ntp.org iburst
修改为：
#server 0.centos.pool.ntp.org iburst #server 1.centos.pool.ntp.org iburst #server 2.centos.pool.ntp.org iburst #server 3.centos.pool.ntp.org iburst
修改当该节点丢失网络链接，依然可以使用本地时间作为时间服务器为集群中的其他节点提供时间同步。
#在刚注释掉的#server 3.centos.pool.ntp.org iburst内容下面增加以下内容： server 127.127.1.0 fudge 127.127.1.0 stratum 10
修改ntpd文件：
[bigdata@bigdata01 hadoop]$ sudo vim /etc/sysconfig/ntpd
增加以下内容：
#让硬件时间与系统时间一起同步 SYNC_HWCLOCK=yes
#重新启动ntpd服务 [bigdata@bigdata01 hadoop]$ sudo systemctl start ntpd #开机启动ntpd服务 [bigdata@bigdata01 hadoop]$ sudo systemctl enable ntpd Created symlink from /etc/systemd/system/multi-user.target.wants/ntpd.service to /usr/lib/systemd/system/ntpd.service.
在其他机器上配置同步任务，依次bigdata02，bigdata03设置同步任务
#设置定时同步命令 [bigdata@bigdata03 ~]$ crontab -e 编写代码（配置10分钟与时间服务器同步），如下： */10**** sudo ntpdate bigdata01
33、
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