hadoop集群再搭建(1)之ambari-server安装

1.安装centos 6.5操作系统

每一个操作系统都配置了三块网卡，一块net,一块host only，一块桥接。除了net转发动态获取IP，其他的网卡IP都是静态配置的。

系统版本：

CentOS release 6.5 (Final)

CPU:

model name : Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz
stepping : 3
cpu MHz : 3192.620
cache size : 6144 KB
clflush size : 64
cache_alignment : 64
address sizes : 42 bits physical, 48 bits virtual
内存

MemTotal: 1004412 kB 1G

硬盘
总容量 20G

节点名称	IP1	IP2	备注
hadoop1	192.168.253.188	动态联网	root/123456/192.168.1.122 桥接
hadoop2	192.168.253.189	动态联网
hadoop3	192.168.253.190	动态联网

2.ssh免秘钥登录

创建用户hadoop

[root@hadoop3 ~]# useradd hadoop
[root@hadoop3 ~]# passwd hadoop

修改密码
所有机器都使用同样的密码最好。

使用hadoop用户，命令如下

ssh-keygen -t rsa 生成rsa加密的密钥

cp id_rsa.pub authorized_keys copy文件

cat id_rsa.pub>>authorized_keys 将其他的秘钥追加到这一个文件中，然后分发给所有机器

[hadoop@hadoop1 .ssh]$ cat id_rsa.pub

ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAqxuCo78OdD/GIgphhLdKFA+vop4AnyiBaNDYlUE6PPwzqoBZVmmGPjrBV+rM/GQkZ1xrDCabKywvcgz+YW5vmo511bZ9ZBXQXck/zSkHcf84YXZo56dcFd00qpbFA1y/5KhtRn4J1REhHRJFYx99ZlBr9miNnGQfZeEYJsNANzTwJGU9Vc5r5Qvkhi9bJ70THkP0rMm2fuSYKTo3QxlixGzVCrZsG6D3Rv4KdXgKtkxAAvTi/7jVEu0WovjbpFlz2VoQT86zhQUmU6S8QWkMlk8kMvEzr+QUrS08ks+8BaSi7Kw+4NmfDNNd/EmI9j8NTWQEWajebOcJYl2n7HaXNw== hadoop@hadoop2.com
ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA5O2ru0IFgXmEdRvr/7cV9cJjZ2/MrYI7ip3UttVu1y6NskQBtqWPE08pxeX3VHoxtqFoqoJCdSlpr9KByngD4Z9U6d5j2UtLbZ9ZCs59YjSO+pinZaXpeKlXH4revdfoRJtmpG4FfyBDi11maDzoJEKObyz3Pi4QxvmI12NQtttFcCRPfv7MqT9l0tuwY5aRbCZVeybWwyZjhtI15p2NAB/042OsQ/FXLvtqVRl4+IOol0yjgi8KTKaBlvWDeKVrLzl4h0tuFUcfNv0yUW+KzrTD7Zj8Q7SpFg73uLn0Ufeq5UtCo0+poMpl+yVcZt0SD1Yic8Er5/i61Pg1ehCFKQ== hadoop@hadoop1.com
ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA8wZr0bFUb0KeD8RfnX0KmujcpRw2r5hb/Opfp1ZXGU36BMmZDRwWHB8E1WaezRUubGVa/HTFm6zV7jetEJAsx9jUIPjEfRd25vW/Xej6gaYlUSg7yTf3H3KTb3wNmqiDziSD8yg9G0bPGcNXVfYAz7CEBPAxk9QFSJNtXxFeqSb9yKdBOzsA4hx1oLwV7G/xOUlCzuwSaS5YMG5eKrn1TDCK+FxcBxk6QpNAWO665XeKN/JTZi1bIQEAqC1tJJo1VFgW9/+gE2skI9RpJapVDm+TiZU/wOVqQek/hFLEfhL5f56wsJlz9lOBhxBPBGAbOBlzCJJCiOhmyx7sW73+Tw== hadoop@hadoop3.com

scp :复制给其他的主机

scp authorized_keys hadoop@192.168.253.188:.ssh/

3.接下来配置所有的hosts文件

[root@hadoop1 .ssh]# vi /etc/hosts

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.253.188 hadoop1.com
192.168.253.189 hadoop2.com
192.168.253.190 hadoop3.com
~

wq保存。

分发：

[root@hadoop1 .ssh]# scp /etc/hosts root@hadoop2.com:/etc/hosts

[root@hadoop1 .ssh]# scp /etc/hosts root@hadoop3.com:/etc/hosts

4.配置完成检查是否可以免秘钥登录

[hadoop@hadoop2 ~]$ ssh hadoop3.com
The authenticity of host 'hadoop3.com (192.168.253.190)' can't be established.
RSA key fingerprint is 16:c3:fc:d7:fc:db:98:ba:ef:aa:54:e4:d9:f5:51:be.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'hadoop3.com' (RSA) to the list of known hosts.
[hadoop@hadoop3 ~]$

服务器之间可以互相ssh登录，成功

5.安装ambari

[root@hadoop1 ~]# yum install wget

安装wget工具

首先需要获取 Ambari 的公共库文件（public repository）。登录到 Linux 主机并执行下面的命令（也可以自己手工下载）：
wget http://public-repo-1.hortonworks.com/ambari/centos6/2.x/updates/2.0.1/ambari.repo 将下载的 ambari.repo 文件拷贝到 Linux 的系统目录/etc/yum.repos.d/。拷贝完后，我们需要获取该公共库的所有的源文件列表。依次执行以下命令。
yum clean all
yum list|grep ambari

Cleaning up list of fastest mirrors
[root@hadoop1 yum.repos.d]# yum list|grep ambari
ambari-agent.x86_64 2.0.1-45 Updates-ambari-2.0.1
ambari-log4j.noarch 2.0.1.45-1 Updates-ambari-2.0.1
ambari-metrics-collector.x86_64 2.0.1-45 Updates-ambari-2.0.1
ambari-metrics-common.noarch 2.0.1-45 Updates-ambari-2.0.1
ambari-metrics-hadoop-sink.x86_64 2.0.1-45 Updates-ambari-2.0.1
ambari-metrics-monitor.x86_64 2.0.1-45 Updates-ambari-2.0.1
ambari-server.noarch 2.0.1-45 Updates-ambari-2.0.1
hdp_mon_ganglia_addons.noarch 2.0.1.45-1.el6 Updates-ambari-2.0.1
hdp_mon_nagios_addons.noarch 2.0.1.45-1.el6 Updates-ambari-2.0.1

6.ambari配置

待安装完成后，便需要对 Ambari Server 做一个简单的配置。执行下面的命令。

amari-server setup

[root@hadoop1 ~]# ambari-server setup
Using python /usr/bin/python2.6
Setup ambari-server
Checking SELinux...
SELinux status is 'enabled'
SELinux mode is 'enforcing'
Temporarily disabling SELinux
WARNING: SELinux is set to 'permissive' mode and temporarily disabled.
OK to continue [y/n] (y)? y
Customize user account for ambari-server daemon [y/n] (n)?
Adjusting ambari-server permissions and ownership...
Checking iptables...
WARNING: iptables is running. Confirm the necessary Ambari ports are accessible. Refer to the Ambari documentation for more details on ports.
OK to continue [y/n] (y)?
Checking JDK...
[1] Oracle JDK 1.7
[2] Oracle JDK 1.6
[3] - Custom JDK
==============================================================================
Enter choice (1): 1
To download the Oracle JDK and the Java Cryptography Extension (JCE) Policy Files you must accept the license terms found at http://www.oracle.com/technetwork/java/javase/terms/license/index.html and not accepting will cancel the Ambari Server setup and you must install the JDK and JCE files manually.
Do you accept the Oracle Binary Code License Agreement [y/n] (y)?
Downloading JDK from http://public-repo-1.hortonworks.com/ARTIFACTS/jdk-7u67-linux-x64.tar.gz to /var/lib/ambari-server/resources/jdk-7u67-linux-x64.tar.gz

7.ambari启动

简单的 setup 配置完成后。就可以启动 Ambari 了。运行下面的命令。

ambari-server start

[root@hadoop1 ~]# ambari-server start
Using python /usr/bin/python2.6
Starting ambari-server
Ambari Server running with administrator privileges.
Organizing resource files at /var/lib/ambari-server/resources...
Server PID at: /var/run/ambari-server/ambari-server.pid
Server out at: /var/log/ambari-server/ambari-server.out
Server log at: /var/log/ambari-server/ambari-server.log
Waiting for server start....................
Ambari Server 'start' completed successfully.

通过命令tail -f /var/log/ambari-server/ambari-server.log 查看服务器日志

[root@hadoop1 ~]# tail -f /var/log/ambari-server/ambari-server.log
29 Dec 2015 13:25:44,472 INFO [main] Configuration:514 - Generation of file with password
29 Dec 2015 13:25:46,115 INFO [main] Configuration:527 - Reading password from existing file
29 Dec 2015 13:25:47,753 INFO [main] Configuration:527 - Reading password from existing file
29 Dec 2015 13:25:48,195 INFO [main] ViewExtractor:82 - Creating archive folder /var/lib/ambari-server/resources/views/work/ADMIN_VIEW{2.0.0}.
29 Dec 2015 13:25:48,196 INFO [main] ViewExtractor:89 - Extracting files from ambari-admin-2.0.1.45.jar.
29 Dec 2015 13:25:49,386 INFO [main] Configuration:527 - Reading password from existing file
29 Dec 2015 16:32:07,171 INFO [main] Configuration:527 - Reading password from existing file
29 Dec 2015 16:32:07,213 INFO [main] Configuration:747 - Hosts Mapping File null
29 Dec 2015 16:32:07,213 INFO [main] HostsMap:60 - Using hostsmap file null
29 Dec 2015 16:32:08,470 INFO [main] ControllerModule:173 - Detected POSTGRES as the database type from the JDBC URL
29 Dec 2015 16:32:18,870 INFO [main] AmbariServer:655 - Getting the controller
29 Dec 2015 16:32:22,555 INFO [main] StackDirectory:408 - Stack '/var/lib/ambari-server/resources/stacks/HDP/2.0.6.GlusterFS' doesn't contain an upgrade directory
29 Dec 2015 16:32:22,613 INFO [main] StackDirectory:429 - Role command order info was loaded from file: /var/lib/ambari-server/resources/stacks/HDP/2.0.6.GlusterFS/role_command_order.json
29 Dec 2015 16:32:22,703 INFO [main] StackDirectory:408 - Stack '/var/lib/ambari-server/resources/stacks/HDP/2.1.GlusterFS' doesn't contain an upgrade directory

8.完成

打开地址

http://192.168.1.122:8080/ 完成