cm6.2搭建遇到“安装失败。 无法安装 cloudera-manager-agent 包”问题

具体内容：
BEGIN yum makecache
BDB2053 Freeing read locks for locker 0x15f: 9033/140443655198528
Loaded plugins: fastestmirror
https://archive.cloudera.com/cm5/redhat/7/x86_64/cm/5.14.1/repodata/repomd.xml: [Errno 14] curl#35 - “TCP connection reset by peer”
Trying other mirror.

One of the configured repositories failed (Cloudera Manager, Version 5.14.1),
and yum doesn’t have enough cached data to continue. At this point the only
safe thing yum can do is fail. There are a few ways to work “fix” this:

1. Contact the upstream for the repository and get them to fix the problem.

2. Reconfigure the baseurl/etc. for the repository, to point to a working
   upstream. This is most often useful if you are using a newer
   distribution release than is supported by the repository (and the
   packages for the previous distribution release still work).

3. Run the command with the repository temporarily disabled
   yum --disablerepo=cloudera-manager …

4. Disable the repository permanently, so yum won’t use it by default. Yum
   will then just ignore the repository until you permanently enable it
   again or use --enablerepo for temporary usage:

yum-config-manager --disable cloudera-manager
or
subscription-manager repos --disable=cloudera-manager

5. Configure the failing repository to be skipped, if it is unavailable.
   Note that yum will try to contact the repo. when it runs most commands,
   so will have to try and fail each time (and thus. yum will be be much
   slower). If it is a very temporary problem though, this is often a nice
   compromise:

yum-config-manager --save --setopt=cloudera-manager.skip_if_unavailable=true

failure: repodata/repomd.xml from cloudera-manager: [Errno 256] No more mirrors to try.
https://archive.cloudera.com/cm5/redhat/7/x86_64/cm/5.14.1/repodata/repomd.xml: [Errno 14] curl#35 - “TCP connection reset by peer”
END (1)
正在安装 cloudera-manager-agent 包…
BEGIN yum list installed cloudera-manager-agent
Loaded plugins: fastestmirror
Error: No matching Packages to list
END (1)
BEGIN yum info cloudera-manager-agent
Loaded plugins: fastestmirror
https://archive.cloudera.com/cm5/redhat/7/x86_64/cm/5.14.1/repodata/repomd.xml: [Errno 14] curl#35 - “Network file descriptor is not connected”
Trying other mirror.

One of the configured repositories failed (Cloudera Manager, Version 5.14.1),
and yum doesn’t have enough cached data to continue. At this point the only
safe thing yum can do is fail. There are a few ways to work “fix” this:

1. Contact the upstream for the repository and get them to fix the problem.

2. Reconfigure the baseurl/etc. for the repository, to point to a working
   upstream. This is most often useful if you are using a newer
   distribution release than is supported by the repository (and the
   packages for the previous distribution release still work).

3. Run the command with the repository temporarily disabled
   yum --disablerepo=cloudera-manager …

4. Disable the repository permanently, so yum won’t use it by default. Yum
   will then just ignore the repository until you permanently enable it
   again or use --enablerepo for temporary usage:

yum-config-manager --disable cloudera-manager
or
subscription-manager repos --disable=cloudera-manager

5. Configure the failing repository to be skipped, if it is unavailable.
   Note that yum will try to contact the repo. when it runs most commands,
   so will have to try and fail each time (and thus. yum will be be much
   slower). If it is a very temporary problem though, this is often a nice
   compromise:

yum-config-manager --save --setopt=cloudera-manager.skip_if_unavailable=true

failure: repodata/repomd.xml from cloudera-manager: [Errno 256] No more mirrors to try.
https://archive.cloudera.com/cm5/redhat/7/x86_64/cm/5.14.1/repodata/repomd.xml: [Errno 14] curl#35 - “Network file descriptor is not connected”
END (1)
cloudera-manager-agent must have Version=5.14.1 and Build=1, exiting
closing logging file descriptor

解决方案：
在/etc/yum.repos.d目录下，找到loudera-manager.repo文件 添加：
baseurl = https://archive.cloudera.com/cm6/6.2.0/redhat7/yum