On Thu, 25 Feb 2021 at 14:03, Ed Greshko <ed.gres...@greshko.com> wrote:
> On 26/02/2021 01:19, George N. White III wrote: > > I haven't used CentOS7 for several years, so I was ignoring this > > thread in the hope others could answer. > > > > My not very trustworthy memory is that "/etc/exports" on > > the server needs the "insecure" option for NFS4 to work, see: > > https://access.redhat.com/solutions/3773891 < > https://access.redhat.com/solutions/3773891> for explanation > > and some diagnostic tests. My take on diagnostics is: > > FWIW, "others" have tried changing > > /home/egreshko > 2001:b030:112f:2::0/64(rw,sync,insecure,no_root_squash,no_subtree_check) > > to > > /home/egreshko > 2001:b030:112f:2::0/64(rw,sync,no_root_squash,no_subtree_check) > > And the mount from an F33 system still succeeds. > > The entry for "man exports": secure This option requires that requests not using gss originate on an Internet port less than IPPORT_RESERVED (1024). This option is on by default. To turn it off, specify insecure. (NOTE: older kernels (before upstream kernel version 4.17) enforced this re‐ quirement on gss requests as well.) /run/sysconfig/nfs-utils had: GSS_USE_PROXY="yes" -- wonder if GSS is somehow at play here? -- George N. White III
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