NSS-MYMACHINES(8) nss-mymachines NSS-MYMACHINES(8) (NAME) nss-mymachines - (SYNOPSIS) libnss_mymachines.so.2 (DESCRIPTION) nss-mymachines (NSS Name Service Switch) (glibc) systemd-machined.service(8) . IP (scope) . (network namespacing) ( --private-network systemd-nspawn(1) ). systemd-machined . NSS (context) . . . ( ) . NSS "mymachines" "hosts:" /etc/nsswitch.conf . "mymachines" "resolve" "dns" "hosts:" /etc/nsswitch.conf DNS . /ETC/NSSWITCH.CONF (CONFIGURATION IN /ETC/NSSWITCH.CONF) /etc/nsswitch.conf nss-mymachines : passwd: files systemd group: files [SUCCESS=merge] systemd shadow: files systemd gshadow: files systemd hosts: mymachines resolve [!UNAVAIL=return] files myhostname dns networks: files protocols: db files services: db files ethers: db files rpc: db files netgroup: nis : NSS-MYMACHINES (EXAMPLE: MAPPINGS PROVIDED BY NSS-MYMACHINES) "rawhide" systemd-nspawn(1) : # systemd-nspawn -M rawhide --boot --network-veth --private-users=pick Spawning container rawhide on /var/lib/machines/rawhide. Selected user namespace base 20119552 and range 65536. ... $ machinectl --max-addresses=3 MACHINE CLASS SERVICE OS VERSION ADDRESSES rawhide container systemd-nspawn fedora 30 169.254.40.164 fe80::94aa:3aff:fe7b:d4b9 $ ping -c1 rawhide PING rawhide(fe80::94aa:3aff:fe7b:d4b9%ve-rawhide (fe80::94aa:3aff:fe7b:d4b9%ve-rawhide)) 56 data bytes 64 bytes from fe80::94aa:3aff:fe7b:d4b9%ve-rawhide (fe80::94aa:3aff:fe7b:d4b9%ve-rawhide): icmp_seq=1 ttl=64 time=0.045 ms ... $ ping -c1 -4 rawhide PING rawhide (169.254.40.164) 56(84) bytes of data. 64 bytes from 169.254.40.164 (169.254.40.164): icmp_seq=1 ttl=64 time=0.064 ms ... # machinectl shell rawhide /sbin/ip a Connected to machine rawhide. Press ^] three times within 1s to exit session. 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 ... 2: host0@if21: mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 96:aa:3a:7b:d4:b9 brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet 169.254.40.164/16 brd 169.254.255.255 scope link host0 valid_lft forever preferred_lft forever inet6 fe80::94aa:3aff:fe7b:d4b9/64 scope link valid_lft forever preferred_lft forever Connection to machine rawhide terminated. (SEE ALSO) systemd(1), systemd-machined.service(8), machinectl(1), nss-systemd(8), nss-resolve(8), nss-myhostname(8), nsswitch.conf(5), getent(1) systemd 261.2 NSS-MYMACHINES(8)