uts_namespaces

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



NAME
       uts_namespaces - overview of Linux UTS namespaces

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

COLOPHON
       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
       https://www.kernel.org/doc/man-pages/.



Linux                             2019-11-19                 UTS_NAMESPACES(7)