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环境：centos6.5
查看Cloudera Manager官方安装文档，注意版本一定要对应上
在官网下载安装需要的依赖包
Installation failed. Failed to receive heartbeat from agent.
Ensure that the host‘s hostname is configured properly.
Ensure that port 7182 is accessible on the Cloudera Manager Server (check firewall rules).
Ensure that ports 9000 and 9001 are free on the host being added.
Check agent logs in /var/log/cloudera-scm-agent/ on the host being added (some of the logs can be found in the installation details).
当出现以上错误信息提示时需要重新进行网络配置
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原文地址：http://www.cnblogs.com/zrz43/p/4874009.html
