Index · Directives systemd 229

Name

nss-resolve, libnss_resolve.so.2 — Provide hostname resolution via systemd-resolved.service

Synopsis

libnss_resolve.so.2

Description

nss-resolve is a plugin module for the GNU Name Service Switch (NSS) functionality of the GNU C Library (glibc) enabling it to resolve host names via the systemd-resolved(8) local network name resolution service.

To activate the NSS module, "resolve" has to be added to the line starting with "hosts:" in /etc/nsswitch.conf.

It is recommended to place "resolve" early in the nsswitch.conf line (but after the "files" entry), replacing the "dns" entry if it exists, to ensure DNS queries are always routed via systemd-resolved(8).

Example

Here is an example /etc/nsswitch.conf file that enables resolve correctly:

passwd:         compat mymachines
group:          compat mymachines
shadow:         compat

hosts:          files resolve mymachines myhostname
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

netgroup:       nis

Note that nss-resolve will chain-load nss-dns if systemd-resolved.service is not running, ensuring that basic DNS resolution continues to work if the service is down.

See Also

systemd(1), systemd-resolved(8), nss-mymachines(8), nss-myhostname(8), nsswitch.conf(5)