错误:
20180207:00:05:00:003516 gpinitsystem:shsm002:gpdba-[INFO]:-Checking Master host
20180207:00:05:00:003516 gpinitsystem:shsm002:gpdba-[WARN]:-Have lock file /tmp/.s.PGSQL.2346.lock but no process running on port 2346
20180207:00:05:00:gpinitsystem:shsm002:gpdba-[FATAL]:-Found indication of postmaster process on port 2346 on Master host Script Exiting!
解决：删除文件，rm /tmp/.s.PGSQL.2346.lock。
错误：
[gpdba@shsm002 ~]$ /bin/bash /home/gpdba/gpAdminLogs/backout_gpinitsystem_gpdba_20180207_225128
[FATAL]:-Not on original master host Master, backout script exiting!
解决：不使用这个脚本清理中间数据，直接删除gpdata目录下的未完成的数据库文件即可。
错误：
20180207:23:39:31:028691 gpcreateseg.sh:shsm002:gpdba-[INFO][1]:-Start Function PROCESS_QE
20180207:23:39:31:028691 gpcreateseg.sh:shsm002:gpdba-[INFO][1]:-Processing segment Slave1
/usr/gpdb/bin/postgres: error while loading shared libraries: libgpopt.so.3: cannot open shared object file: No such file or directory
no data was returned by command ""/usr/gpdb/bin/postgres" -V"
The program "postgres" is needed by initdb but was either not found in the same directory as "/usr/gpdb/bin/initdb" or failed unexpectedly.
Check your installation; "postgres -V" may have more information.
/usr/gpdb/bin/postgres: error while loading shared libraries: libgpopt.so.3: cannot open shared object file: No such file or directory
no data was returned by command ""/usr/gpdb/bin/postgres" -V"
The program "postgres" is needed by initdb but was either not found in the same directory as "/usr/gpdb/bin/initdb" or failed unexpectedly.
Check your installation; "postgres -V" may have more information.
cat: /home/gpdba/gpdata/gpdatap1/gpseg0.initdb: No such file or directory
cat: /home/gpdba/gpdata/gpdatap2/gpseg1.initdb: No such file or directory
解决：修改/usr/gpdb/greenplum_path.sh文件，添加libgpopt.so.3文件所在目录到环境变量LD_LIBRARY_PATH定义中，然后执行source命令刷新（在重启电脑之前，可能每次打开终端命令行时都需要手动刷新一下）。修改后的文件内容如下：
GPHOME=/usr/gpdb
# Replace with symlink path if it is present and correct
if [ -h ${GPHOME}/../greenplum-db ]; then
GPHOME_BY_SYMLINK=`(cd ${GPHOME}/../greenplum-db/ && pwd -P)`
if [ x"${GPHOME_BY_SYMLINK}" = x"${GPHOME}" ]; then
GPHOME=`(cd ${GPHOME}/../greenplum-db/ && pwd -L)`/.
fi
unset GPHOME_BY_SYMLINK
fi
#setup PYTHONHOME
if [ -x $GPHOME/ext/python/bin/python ]; then
PYTHONHOME="$GPHOME/ext/python"
fi
PYTHONPATH=$GPHOME/lib/python
PATH=$GPHOME/bin:$PYTHONHOME/bin:$PATH
LD_LIBRARY_PATH=$GPHOME/lib:/usr/local/lib:${LD_LIBRARY_PATH-}
export LD_LIBRARY_PATH
OPENSSL_CONF=$GPHOME/etc/openssl.cnf
export GPHOME
export PATH
export PYTHONPATH
export PYTHONHOME
export OPENSSL_CONF
错误：
20180208:01:57:59:012804 gpinitsystem:shsm002:gpdba-[INFO]:-Start Function CREATE_DATABASE
psql: FATAL: DTM initialization: failure during startup recovery, retry failed, check segment status (cdbtm.c:1513)
20180208:01:58:00:012804 gpinitsystem:shsm002:gpdba-[INFO]:-Start Function ERROR_CHK
20180208:01:58:00:012804 gpinitsystem:shsm002:gpdba-[INFO]:-End Function ERROR_CHK
20180208:01:58:00:012804 gpinitsystem:shsm002:gpdba-[INFO]:-Start Function ERROR_EXIT
20180208:01:58:00:gpinitsystem:shsm002:gpdba-[FATAL]:-Failed to complete create database testDB Script Exiting!
解决：关闭并禁用防火墙（所有的防火墙程序）
运行命令：
# systemctl stop firewalld
# systemctl mask firewalld
# systemctl stop iptables
# systemctl disable iptables
另一种方法供参考：shared_buffers设置太大，对于如何根据自己内存和segment节点个数分配shared_buffers,可以去官网找一下，通常出去2g的other，以及statement_mem * segment 个数，剩下的除以segment的个数即可。这种情况通常出现中安装过程中就设置了shared_buffers，一般默认的125MB。