我正在尝试在单个 Ubuntu localhost 上运行所有 Hadoop 服务器。所有端口都是打开的，我的 /etc/hosts 文件是
127.0.0.1 frigate frigate.domain.local localhost
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
尝试安装集群 Cloudera 管理器失败并显示以下消息：
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).
我从通过 Wifi/拨号调制解调器连接到我的提供商的家中运行我的 Ubuntu-12.04 节点。缺少什么配置？