Ambari上顯示錯誤資訊：

 2017-11-06 13:01:00,618 - Will retry 65 time(s), caught exception: (u"Execution of 'curl --location-trusted -k --negotiate -u : -b /var/lib/ambari-agent/tmp/cookies/ad58a07f-ffbc-473f-b179-4fcb23675c45 -c /var/lib/ambari-agent/tmp/cookies/ad58a07f-ffbc-473f-b179-4fcb23675c45 -w '%{http_code}' '{{policymgr_mgr_url}}/login.jsp' --connect-timeout 10 --max-time 12 -o /dev/null 1>/tmp/tmp5IQZF0 2>/tmp/tmpzzZvSs' returned 3. curl: (3) [globbing] nested braces not supported at pos

根據提示是大括號問題，搜尋配置引數{{policymgr_mgr_url}}

將HDFS上配置：ranger.plugin.hdfs.policy.rest.url={{policymgr_mgr_url}}修改為：ranger.plugin.hdfs.policy.rest.url=http://IP:6080

重啟HDFS即可解決此問題