我已经通过yum一些软件包安装如下：
$ yum install ambari-agent
安装过程中会出现很多警告（见下文）。是否可以阻止这些警告，但只看到发生错误时的错误？
预期输出应该是普通yum安装但没有警告。
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Resolving Dependencies
--> Running transaction check
---> Package ambari-agent.x86_64 0:2.5.0.3-7 will be updated
---> Package ambari-agent.x86_64 0:2.6.1.0-143 will be an update
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Updating:
ambari-agent x86_64 2.6.1.0-143 ambari-2.6.1.0 90 M
Transaction Summary
================================================================================
Upgrade 1 Package
Total download size: 90 M
Downloading packages:
No Presto metadata available for ambari-2.6.1.0
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Updating : ambari-agent-2.6.1.0-143.x86_64 1/2
Upgrading configs in /etc/ambari-agent/conf/ambari-agent.ini
Values will be updated from /etc/ambari-agent/conf/ambari-agent.ini.old except the following list: [('heartbeat', 'dirs'), ('heartbeat', 'state_interval')], ['stack', 'puppet', 'command', 'python']
Cleanup : ambari-agent-2.5.0.3-7.x86_64 2/2
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.5/services/FALCON/configuration/oozie-site.xml: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.2/services/FALCON/configuration/oozie-site.xml: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.1/services/SMARTSENSE/package/files/view/smartsense-ambari-view-1.4.0.2.5.0.3-7.jar: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.1/services/FALCON/configuration/oozie-site.xml: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.1/services/FALCON/configuration: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/common-services/ZEPPELIN/0.6.0.2.5/quicklinks/quicklinks.json: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/common-services/ZEPPELIN/0.6.0.2.5/quicklinks: remove failed: No such file or directory