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

       uts_namespaces - overview of Linux UTS namespaces

       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

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

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

       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)