Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
cloudera-scm-server宕机后重启,报错,日志如下:2017-12-0512:51:11,920WARNcom.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1:com.mchange.v2.resourcepool.BasicResourcePool:com.mchange.v2.resourcepool.Bas