NFSv4 in RHEL/CentOS 6.x uses libnfsidmap as a sort of add-on module. I believe the package you need is nfs-utils-lib. [root at x ~]# cat /etc/redhat-release Red Hat Enterprise Linux Server release 6.6 (Santiago) [root at x ~]# ll /etc/idmapd.conf -rw-r--r-- 1 root root 3601 Dec 6 2012 /etc/idmapd.conf [root at pollux2 ~]# rpm -qf /etc/idmapd.conf nfs-utils-lib-1.1.5-9.el6.x86_64 [root at x ~]# rpm -ql nfs-utils-lib /etc/idmapd.conf /usr/lib64/libnfsidmap.so.0 /usr/lib64/libnfsidmap.so.0.3.0 /usr/lib64/libnfsidmap/nsswitch.so /usr/lib64/libnfsidmap/static.so /usr/lib64/libnfsidmap/umich_ldap.so /usr/lib64/librpcsecgss.so.3 /usr/lib64/librpcsecgss.so.3.0.0 /usr/share/doc/nfs-utils-lib-1.1.5 /usr/share/doc/nfs-utils-lib-1.1.5/libnfsidmap-0.24 /usr/share/doc/nfs-utils-lib-1.1.5/libnfsidmap-0.24/AUTHORS /usr/share/doc/nfs-utils-lib-1.1.5/libnfsidmap-0.24/ChangeLog /usr/share/doc/nfs-utils-lib-1.1.5/libnfsidmap-0.24/NEWS /usr/share/doc/nfs-utils-lib-1.1.5/libnfsidmap-0.24/README /usr/share/doc/nfs-utils-lib-1.1.5/librpcsecgss-0.18 /usr/share/doc/nfs-utils-lib-1.1.5/librpcsecgss-0.18/AUTHORS /usr/share/doc/nfs-utils-lib-1.1.5/librpcsecgss-0.18/ChangeLog /usr/share/doc/nfs-utils-lib-1.1.5/librpcsecgss-0.18/NEWS /usr/share/doc/nfs-utils-lib-1.1.5/librpcsecgss-0.18/README /usr/share/man/man3/nfs4_uid_to_name.3.gz /usr/share/man/man5/idmapd.conf.5.gz Regards, Ben On 4/3/19 2:51 PM, Mark LaPierre wrote: > On 4/3/19 5:29 PM, Gordon Messmer wrote: >> On 4/3/19 2:17 PM, Mark LaPierre wrote: >>> >>> Content of idmapd.conf: >> >> >> As long as idmapd is *running* it typically doesn't need to be >> configured specifically. >> >> >>> Now one more question. The imap daemon is a mail server. How is it >>> that I need a mail server running to make LDAP and NFS work? Doesn't >>> seem to make sense to me. >> >> >> idmapd is not imapd. idmapd (aka rpc.idmapd) is a helper for NFSv4 >> which should be run on the server. It shouldn't be required on the >> client. >> >> A couple of points: 1) Your original message isn't specific about the >> problem that you're seeing, but if idmapd is involved, then the >> problem isn't related to LDAP. NFSv4 will work the same way whether >> you're using NIS or LDAP. Pretty much everything other than NSS and >> PAM will, in fact. 2) I don't recommend rolling your own LDAP >> services. It's very easy to let sensitive information leak. Using >> FreeIPA for LDAP and KRB5 is much easier and a lot more secure. > > Thank you for your reply to my incompetent query. > > Okay, I'm a bit dyslectic. I see that I should have seen idmap but I > saw imap. I missed the "d". That leads me to another question: > > I don't see a package that contains idmapd. When I try to install it I > get: > No package idmapd available. > No package idmap available. > > I don't see idmapd in the Service Configuration GUI. > > rpm -qa | grep idmap > libsss_idmap-1.13.3-60.el6_10.2.x86_64 > > How might one install a daemon by the name idmapd on CentOS 6? > -- Benjamin Hauger SysAdmin/CSDC-DMO Rm. 94 x8371