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 5.08 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)clone2(2)__clone2(2)clone(2)clone3(2)getdomainname(2)gethostname(2)oldolduname(2)olduname(2)setdomainname(2)sethostname(2)uname(2)namespaces(7)