uts_namespaces(7) - man - phpMan

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  re‐
       trieved  using uname(2), gethostname(2), and getdomainname(2).  Changes made to these identi‐
       fiers 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 val‐
       ues 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), un‐‐
       share(2), namespaces(7)

COLOPHON
       This page is part of release 5.10 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)