Package: systemd
Version: 241-7~deb10u2
Severity: normal
Tags: upstream
Hi,
first, a short description of the overall setup: A private (aka home) network
using Samba AD with ISC DHCP for network management and setup. All machines run
up-to-date Debian 10 (buster). I mainly run two types of machines (reg. their
network setup mechanism): Laptops, which use Network-Manager + systemd-
resolved, and others, which use systemd-networkd + systemd-resolved (or better:
should use). I also use Salt for overall systems management.
The problem with the latter setup is that it breaks Python's socket.getfqdn()
function when
1) systemd-resolved is running
2) /etc/resolv.conf is a symlink to /run/systemd/resolve/stub-
resolv.conf
3) /etc/resolv.conf lacks a "domain" entry
On a Laptop, which uses Network-Manager, Python's socket.getfqdn() function
correctly returns the fully qualified domain name with above setup. On all
other systems, which use systemd-networkd, the function only returns the short
hostname. This, for example, breaks the Salt Minion's ability to correctly set
the "fqdn" and "domain" grains (where the latter is calculated from the
former).
The only workaround I found so far for resolving the situation (other than
switching all systems from systemd-networkd to Network-Manager) is to
1) Stop and disable systemd-resolved
2) Replace the symlink with a static /etc/resolv.conf file
3) Add a "domain" entry (in addition to "search") to the file
>From my understanding, there should be no difference in behaviour of Python's
socket.getfqdn() regardless of whether Network-Manager or systemd-networkd is
used for network setup.
Bye...
Dirk
-- Package-specific info:
-- System Information:
Debian Release: 10.2
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.19.0-6-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_WARN, TAINT_OOT_MODULE,
TAINT_UNSIGNED_MODULE
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8), LANGUAGE=
(charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages systemd depends on:
ii adduser 3.118
ii libacl1 2.2.53-4
ii libapparmor1 2.13.2-10
ii libaudit1 1:2.8.4-3
ii libblkid1 2.34-0.1
ii libc6 2.28-10
ii libcap2 1:2.25-2
ii libcryptsetup12 2:2.1.0-5+deb10u2
ii libgcrypt20 1.8.4-5
ii libgnutls30 3.6.7-4
ii libgpg-error0 1.35-1
ii libidn11 1.33-2.2
ii libip4tc0 1.8.2-4
ii libkmod2 26-1
ii liblz4-1 1.8.3-1
ii liblzma5 5.2.4-1
ii libmount1 2.34-0.1
ii libpam0g 1.3.1-5
ii libseccomp2 2.3.3-4
ii libselinux1 3.0-1
ii libsystemd0 241-7~deb10u2
ii mount 2.33.1-0.1
ii util-linux 2.33.1-0.1
Versions of packages systemd recommends:
ii dbus 1.12.16-1
ii libpam-systemd 241-7~deb10u2
Versions of packages systemd suggests:
ii policykit-1 0.105-25
ii systemd-container 241-7~deb10u2
Versions of packages systemd is related to:
pn dracut <none>
ii initramfs-tools 0.133+deb10u1
ii udev 241-7~deb10u2
-- no debconf information
