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