同事在初始化greenplum时，报了一个错误

20161012:14:58:57:005531 gpcreateseg.sh:master:gpadmin-[INFO]:-Start Function ED_PG_CONF
20161012:14:58:57:005531 gpcreateseg.sh:master:gpadmin-[WARN]:-Failed to insert port=40000 in /data/gpadmin/gpdata/primary/gpseg2/postgresql.conf on sdw3
20161012:14:58:57:005531 gpcreateseg.sh:master:gpadmin-[INFO]:-End Function ED_PG_CONF
20161012:14:58:57:005531 gpcreateseg.sh:master:gpadmin-[FATAL][2]:-Failed Update port number to 40000

网上搜了一下，需要安装ed

yum install -y ed

官方文档没有提及这个依赖包，故此需要注意一下，而且每个节点包含segment都要把ed安装一遍