NAME¶
nss-mymachines, libnss_mymachines.so.2 - Provide hostname resolution for local
container instances.
SYNOPSIS¶
libnss_mymachines.so.2
DESCRIPTION¶
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.
EXAMPLE¶
Here is an example /etc/nsswitch.conf file that enables
nss-mymachines
correctly:
passwd: compat mymachines
group: compat mymachines
shadow: compat
hosts: files mymachines resolve myhostname
networks: files
protocols: db files
services: db files
ethers: db files
rpc: db files
netgroup: nis
SEE ALSO¶
systemd(1),
systemd-machined.service(8),
nss-resolve(8),
nss-myhostname(8),
nsswitch.conf(5),
getent(1)