Greenplum修改hostname

# 切换用户
su - gpadmin

# 关闭GP Master
gpstop -M fast

# 运维模式启动GP Master
gpstart -m

# 进入GP 命令行，运行命令
PGOPTIONS='-c gp_session_role=utility' psql -U gpadmin postgres

set allow_system_table_mods='TRUE';
update gp_segment_configuration set hostname='更改之后的主机名' where address='原来的主机名';
update gp_segment_configuration set address='更改之后的主机名' where hostname='更改之后的主机名'; 
\q

# 关闭GP Master
gpstop -m

# 启动GP
gpstart -a