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How to add a different Group ID rather than User ID during gpseginstall

Environment

Product Version
Pivotal Greenplum (GPDB) ALL versions
OS ALL versions
Others  

Symptom

Generally, while running the gpseinstall, the default user ID is gpadmin but if the user wants to add a different group ID rather than the default user ID, there isn't an option to do so in the --help section of gpseginstall. 

Cause 

There is an undocumented -g option that will allow you to add the system user with a different group ID instead of what is specified for the user ID.

Resolution

The command below will add a different group ID during the process of adding the system user when running the gpseginstall process. The only caveat is that you would have to manually create the group using the groupadd command in Linux before running the gpseginstall command. 

gpseginstall -f /hostfile_exkeys -u testuser -g testgroup -p P@$$word

 

 

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