uts_namespaces(7) — Linux manual page


UTS_NAMESPACES(7)       Linux Programmer's Manual      UTS_NAMESPACES(7)

NAME         top

       uts_namespaces - overview of Linux UTS namespaces

DESCRIPTION         top

       UTS namespaces provide isolation of two system identifiers: the
       hostname and the NIS domain name.  These identifiers are set
       using sethostname(2) and setdomainname(2), and can be retrieved
       using uname(2), gethostname(2), and getdomainname(2).  Changes
       made to these identifiers are visible to all other processes in
       the same UTS namespace, but are not visible to processes in other
       UTS namespaces.

       When a process creates a new UTS namespace using clone(2) or
       unshare(2) with the CLONE_NEWUTS flag, the hostname and domain of
       the new UTS namespace are copied from the corresponding values in
       the caller's UTS namespace.

       Use of UTS namespaces requires a kernel that is configured with
       the CONFIG_UTS_NS option.

SEE ALSO         top

       nsenter(1), unshare(1), clone(2), getdomainname(2),
       gethostname(2), setns(2), uname(2), unshare(2), namespaces(7)

COLOPHON         top

       This page is part of release 5.13 of the Linux man-pages project.
       A description of the project, information about reporting bugs,
       and the latest version of this page, can be found at

Linux                          2019-11-19              UTS_NAMESPACES(7)

Pages that refer to this page: nsenter(1)unshare(1)clone(2)getdomainname(2)gethostname(2)uname(2)namespaces(7)