hadoop安装和维护05--配置yum源

To get started setting up your local repository, complete the following prerequisites:

• Select an existing server in, or accessible to the cluster, that runs a supported operating system.
• Enable network access from all hosts in your cluster to the mirror server.
• Ensure the mirror server has a package manager installed such as yum (RHEL / CentOS / Oracle Linux), zypper (SLES), or apt-get (Debian/Ubuntu).
• Optional: If your repository has temporary Internet access, and you are using RHEL/CentOS/Oracle Linux as your OS, install yum utilities:
    yum install yum-utils createrepo

一. 安装httpd服务

1.1、安装httpd：

yum install httpd 

1.2、Apache启动出现错误：

[root@ www.linuxidc.com bin]# service httpd restart
AH00557: httpd: apr_sockaddr_info_get() failed for linux.64.114
AH00558: httpd: Could not reliably determine the server's fully qualified domain

name, using 127.0.0.1. Set the 'ServerName' directive globally to suppress this message

1.3、解决：

修改ServerName

vi /etc/httpd/conf/httpd.conf
#ServerName www.example.com:80
#添加这行
ServerName localhost:80
"/etc/httpd/conf/httpd.conf" 1011L, 34444C written

1.4 、启动httpd

service httpd start 
或
/etc/initd/httpd start

启动成功：
[root@rhel1 yum.repos.d]# ps -ef | grep httpd
root       5936      1  0 13:04 ?        00:00:00 /usr/sbin/httpd
apache     5939   5936  0 13:04 ?        00:00:00 /usr/sbin/httpd
apache     5940   5936  0 13:04 ?        00:00:00 /usr/sbin/httpd
apache     5941   5936  0 13:04 ?        00:00:00 /usr/sbin/httpd
apache     5942   5936  0 13:04 ?        00:00:00 /usr/sbin/httpd
apache     5943   5936  0 13:04 ?        00:00:00 /usr/sbin/httpd
apache     5944   5936  0 13:04 ?        00:00:00 /usr/sbin/httpd
apache     5945   5936  0 13:04 ?        00:00:00 /usr/sbin/httpd
apache     5946   5936  0 13:04 ?        00:00:00 /usr/sbin/httpd
root       5976   3487  0 13:09 pts/0    00:00:00 grep httpd

这时，直接在浏览器中输入服务器的IP地址，即可看到Apache2的默认页面。此时的Apache仅仅能提供HTTP服务，不能执行php、也不能连接MySQL数据库。

二、搭建yum源

2.1 Setting Up a Local Repository with No Internet Access

参考：
2.1.1、 下载需要的包：

2.1.2、 复制到你的httpd设置的web server 目录：

vi /etc/httpd/cong/httpd.conf:
搜索web server 目录：/Document

2.1.3、解压你的tarball,
ambari ， hdp的解压有区别：

2.1.4、Confirm you can browse to the newly created local repositories：

FQDN：(Fully Qualified Domain Name)完全合格域名/全称域名，是指主机名加上全路径，全路径中列出了序列中所有域成员。
import: 记录这些urls, 但你在安装Ambari和集群时需要。
2.1.5、Optional: If you have multiple repositories configured in your environment, deploy the following plug-in on all the nodes in your cluster.

• Install the plug-in.
  - yum install yum-plugin-priorities

• 编辑/etc/yum/pluginconf.d/priorities.conf , 添加下列属性：

[main]

enabled=1

gpgcheck=0

2.2 Setting Up a Local Repository with No Internet Access

2.2.1、获取Ambari和HDP的 repository configuration文件：

2.2.2、确保库的可用性

yum repolist

2.2.3、同步镜像服务器和本地库
浏览服务器目录：

cd /var/www/html

对Ambari ,创建目录， 同步库：

mkdir -p ambari/<OS>
cd ambari/<OS>
reposync -r Updates-Ambari-2.4.2.0

对HDP Stack Repositories， 创建目录， 同步库：

mkdir -p hdp/<OS>
cd hdp/<OS>
reposync -r HDP-<latest.version>
reposync -r HDP-UTILS-<version>

Generate the repository metadata：

• For Ambari:
  createrepo <web.server.directory>/ambari/<OS>/Updates-Ambari-2.4.2.0
• For HDP Stack Repositories:

createrepo <web.server.directory>/hdp/<OS>/HDP-<latest.version>

createrepo <web.server.directory>/hdp/<OS>/HDP-UTILS-<version>

2.2.4、确保可以浏览创建的库：

2.3 配置本地DVD yum源（主要是解决linux系统包的依赖）

[root@logs01 ~]# mount -o loop /opt/software/RHEL_6.3\ x86_64.iso /mnt/
[root@logs03 ~]# vim /etc/yum.repos.d/rhel-source.repo
[rhel-source]
name=Red Hat Enterprise Linux $releasever - $basearch - Source
baseurl=file:///mnt/Server  #注意
enabled=1    #注意
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

[rhel-source-beta]
name=Red Hat Enterprise Linux $releasever Beta - $basearch - Source
baseurl=ftp://ftp.redhat.com/pub/redhat/linux/beta/$releasever/en/os/SRPMS/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-beta,file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

三、总结

  安装HDP 需要配置四个yum源：

• 配置本地DVD yum源（主要是解决linux系统包的依赖）
• ambari源配置文件三个
  
  • ambari
  • HDP
  • HDP-UTILS

注意：将四个YUM源配置文件都COPY到所有要安装HDP的节点上

yum源配置： http://blog.itpub.net/25313300/viewspace-708509
官网的安装教程，很详细。