Authentication considerations for NFSv4 based access

This topic describes authentication considerations for NFSv4 based access.

NFSv4 user name mapping configuration

To enable NFSv4 access, NFS server user name mapping configuration on IBM Spectrum Scale™ should be updated. Issue the following command:
```
mmnfs config change "IDMAPD_DOMAIN=myDomain.com"
```
On the NFS client, ID map configuration should also be updated to reflect the same domain name as defined on NFS server. Additionally ID mapping service should be started.
For example, on RHEL 7.x NFS clients
- The ID map configuration file name is etc/idmapd.conf. Update the Domain attribute in the file to reflect the domain name defined on the NFS server.
- Start nfs.idmap service.
Note: The ID map configuration file and ID mapping service can differ on various OS platforms.