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NAME | SYNOPSIS | DESCRIPTION | EXAMPLE | SEE ALSO | COLOPHON |
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NSS-MYMACHINES(8) nss-mymachines NSS-MYMACHINES(8)
nss-mymachines, libnss_mymachines.so.2 - Provide hostname resolution
for local container instances.
libnss_mymachines.so.2
nss-mymachines is a plug-in module for the GNU Name Service Switch
(NSS) functionality of the GNU C Library (glibc), providing hostname
resolution for the names of containers running locally that are
registered with systemd-machined.service(8). The container names are
resolved to the IP addresses of the specific container, ordered by
their scope. This functionality only applies to containers using
network namespacing.
The module also resolves user and group IDs used by containers to
user and group names indicating the container name, and back. This
functionality only applies to containers using user namespacing.
To activate the NSS module, add "mymachines" to the lines starting
with "hosts:", "passwd:" and "group:" in /etc/nsswitch.conf.
It is recommended to place "mymachines" after the "files" or "compat"
entry of the /etc/nsswitch.conf lines to make sure that its mappings
are preferred over other resolvers such as DNS, but so that
/etc/hosts, /etc/passwd and /etc/group based mappings take
precedence.
Here is an example /etc/nsswitch.conf file that enables
nss-mymachines correctly:
passwd: compat mymachines systemd
group: compat mymachines systemd
shadow: compat
hosts: files mymachines resolve [!UNAVAIL=return] dns myhostname
networks: files
protocols: db files
services: db files
ethers: db files
rpc: db files
netgroup: nis
systemd(1), systemd-machined.service(8), nss-systemd(8),
nss-resolve(8), nss-myhostname(8), nsswitch.conf(5), getent(1)
This page is part of the systemd (systemd system and service manager)
project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a bug
report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩. This
page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2018-02-02. (At that
time, the date of the most recent commit that was found in the repos‐
itory was 2018-02-02.) If you discover any rendering problems in
this HTML version of the page, or you believe there is a better or
more up-to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not part
of the original manual page), send a mail to man-pages@man7.org
systemd 234 NSS-MYMACHINES(8)
Pages that refer to this page: systemd.directives(7), systemd.index(7), nss-myhostname(8), nss-resolve(8), nss-systemd(8), systemd-machined.service(8)
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