best simple nfs export and fstab commands for basic sharing?

I want rw mounts and I want username/group matching by name, not gid/uid.  We have a mix of RHEL/CentOS 6/7.  What are the best/simplest options to do this?
XetroximynAsked:
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arnoldConnect With a Mentor Commented:
The map in /etc/exports is by username, but would require that your users/uids are synchronized among the various systems NFS server and the client systems.


You could script tge user creation making sure .. Username/group and their corresponding uid/gid are identical.
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arnoldCommented:
Centralized directory using nis, or LDAP.
When all the systems are part of a single directory, you can centrally manage the gid/UID is what is stored in the file system level
Which is matched to the local passwd file or a directory nis/LDAP


Storing a numeric value requires less space than trying to store a username which can contain various characters, alph, numeric, some symbols......

If using a central directory, make sure to have replicas as well as test transition of a replica to becoming the new master should the current master Fails due to HW issues.

There are write-ups on various setup/disaster situations.
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XetroximynAuthor Commented:
I toyed around with IPA for a bit, and had problems..... I decided I prefer local users.... simple.... I don't have to worry about any additional server or service to facilitate logins....

Is it possible to have NFS map permissions/ownership by username instead of UID?  

Someone told me nfs4 can, someone else said it can't.

Can anyone clarify this?
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