cdh5 在网站上的站点位置：

https://archive-primary.cloudera.com/cdh5/redhat/6/x86_64/cdh/

在RHEL6上配置指向这个repo非常简单，只要把：

https://archive-primary.cloudera.com/cdh5/redhat/6/x86_64/cdh/cloudera-cdh5.repo

下载存储到本地即可：

/etc/yum.repos.d/cloudera-cdh5.repo

但是如果是离线情况下，网络连接不可用，就需要把整个资源镜像到本地，然后在cloudera-cdh5.repo中配置。我写了一个脚本，用于下载整个站点。虽然用wget一个命令可以搞定，为了练练shell脚本，我还是写了一个。基本思路就是分析网页，找到资源链接，存储到本地目录。脚本中：PATH_MUST_BE_EXSITED必须指向已经存在的本地目录。不废话，上代码：

#!/bin/bash # # @file #   cdh5_rhel6-downloads.sh # # @date #   2014-12-18 # # @author #   cheungmine # # @version #   0.0.1pre # # downloads all from CDH_URL_PREFIX: #   https://archive.cloudera.com/cdh5/redhat/6/x86_64/cdh/ # ################################################################################ # specify where you want to save downloaded packages here: # PATH_MUST_BE_EXSITED="../libs/cdh"  # get real path from relative path function real_path() {     /cd "$1"     /bin/pwd }  # server dist resources: # CDH_URL_PREFIX="https://archive.cloudera.com/cdh5/redhat/6/x86_64/cdh"  CDH_GPGKEY=$CDH_URL_PREFIX"/RPM-GPG-KEY-cloudera" CDH_REPO=$CDH_URL_PREFIX"/cloudera-cdh5.repo"  CDH5_REPODATA=$CDH_URL_PREFIX"/5/repodata/" CDH5_RPMS_NOARCH=$CDH_URL_PREFIX"/5/RPMS/noarch/" CDH5_RPMS_X86_64=$CDH_URL_PREFIX"/5/RPMS/x86_64/"  # source packages not used: CDH5_SRPMS=$CDH_URL_PREFIX"/5/SRPMS/"  # get local absolute path for storing the downloaded: CDH5_LOCALPATH=$(real_path $PATH_MUST_BE_EXSITED) echo "**** downloaded packages will be stored in folder: "$CDH5_LOCALPATH  # first we get index pages: # repodata_html=$CDH5_LOCALPATH"/.repodata.index.html" x86_64_html=$CDH5_LOCALPATH"/.x86_64.index.html" noarch_html=$CDH5_LOCALPATH"/.noarch.index.html"  wget -c $CDH5_REPODATA -P $CDH5_LOCALPATH -O $repodata_html wget -c $CDH5_RPMS_NOARCH -P $CDH5_LOCALPATH -O $noarch_html wget -c $CDH5_RPMS_X86_64 -P $CDH5_LOCALPATH -O $x86_64_html  wget -c $CDH_GPGKEY -P $CDH5_LOCALPATH wget -c $CDH_REPO -P $CDH5_LOCALPATH  # download repodata # CDH5_REPODATA repodata_dir=$CDH5_LOCALPATH"/5/repodata" mkdir -p $repodata_dir echo -e "process file: '$repodata_html'" while read line do     # start with: <td><a href="     a=`echo $line | sed -n '/<td><a href="/p'`      if [ -n "$a" ]; then         b=`echo $a | sed -n '/Parent Directory/p'`          # do including: Parent Directory         if [ -z "$b" ]; then             # end with: </a></td>             b=`echo $a | sed -n '/<//a><//td>/p'`              if [ -n "$b" ]; then                 a=`echo $a | sed -e 's/.*<td><a href="//;s/">.*//'`                 url=$CDH5_REPODATA$a                  echo -e "download: $url"                  wget -c $url -P $repodata_dir -O $repodata_dir/$a             fi         fi     fi done < $repodata_html   # download noarch # CDH5_RPMS_NOARCH noarch_dir=$CDH5_LOCALPATH"/5/RPMS/noarch" mkdir -p $noarch_dir echo -e "process file: '$noarch_html'" while read line do     # start with: <td><a href="     a=`echo $line | sed -n '/<td><a href="/p'`      if [ -n "$a" ]; then         b=`echo $a | sed -n '/Parent Directory/p'`          # do including: Parent Directory         if [ -z "$b" ]; then             # end with: </a></td>             b=`echo $a | sed -n '/<//a><//td>/p'`              if [ -n "$b" ]; then                 a=`echo $a | sed -e 's/.*<td><a href="//;s/">.*//'`                 url=$CDH5_RPMS_NOARCH$a                  echo -e "download: $url"                  wget -c $url -P $noarch_dir -O $noarch_dir/$a             fi         fi     fi done < $noarch_html   # download x86_64 # CDH5_RPMS_X86_64 x86_64_dir=$CDH5_LOCALPATH"/5/RPMS/x86_64" mkdir -p $x86_64_dir echo -e "process file: '$x86_64_html'" while read line do     # start with: <td><a href="     a=`echo $line | sed -n '/<td><a href="/p'`      if [ -n "$a" ]; then         b=`echo $a | sed -n '/Parent Directory/p'`          # do including: Parent Directory         if [ -z "$b" ]; then             # end with: </a></td>             b=`echo $a | sed -n '/<//a><//td>/p'`              if [ -n "$b" ]; then                 a=`echo $a | sed -e 's/.*<td><a href="//;s/">.*//'`                 url=$CDH5_RPMS_X86_64$a                  echo -e "download: $url"                  wget -c $url -P $x86_64_dir -O $x86_64_dir/$a             fi         fi     fi done < $x86_64_html   # TODO: do we need to check all packages? # remove index pages: rm -f $repodata_html $x86_64_html $noarch_html  echo "download all packages successfully." 

上面脚本可以重复多次运行，不会重复下载。PATH_MUST_BE_EXSITED里面保存了cdh5全部内容。最后把PATH_MUST_BE_EXSITED的全部内容上传到本地ftp服务器上，确保可以访问：

ftp://your-server-ip/pub/libs/cdh/

然后在需要访问的RHEL6机器上，增加一个repo文件，我的是:

# /etc/yum.repos.d/cdh5.repo

[cloudera-cdh5] # Packages for Cloudera's Distribution for Hadoop, Version 5, on RedHat or CentOS 6 x86_64 name     = Cloudera's Distribution for Hadoop, Version 5 baseurl  = ftp://your-server-ip/pub/libs/cdh/5/ gpgkey   = ftp://your-server-ip/pub/libs/cdh/RPM-GPG-KEY-cloudera     gpgcheck = 1 

好了，cdh的本地仓库建好了。只要能访问到这个ftp的服务器中存在这个 /etc/yum.repos.d/cdh5.repo 文件，就可以安装cdh hadoop的软件包。比如安装个zookeeper服务端：

#Installing the ZooKeeper Base Package   $ yum install zookeeper  # Installing the ZooKeeper Server Package   $ yum install zookeeper-server  # start zookeeper-server   $ service zookeeper-server init --myid=1 Using myid of 1  

OK！