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fix: set fallback DNS 8.8.8.8 in live-setup.sh at boot

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When the DHCP-provided nameserver fails (QEMU 10.0.2.3, slow/broken DNS),
first-login.sh would spin forever waiting for network. Add a live-setup.sh
step that replaces 10.0.2.3 with 8.8.8.8/1.1.1.1 so first-login always
has working DNS immediately on login.
This commit is contained in:
mozempk
2026-04-23 08:56:46 +02:00
parent 2bab5d80d9
commit 2fd857145b
1 changed files with 11 additions and 0 deletions
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11
iso/build-live-iso.sh
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@@ -130,6 +130,17 @@ if [ -f /etc/nsswitch.conf ]; then
echo "live-setup: removed mdns from nsswitch.conf (hosts line)"
fi
# ── DNS: ensure a working nameserver is configured ───────────────────────
# NetworkManager will overwrite resolv.conf once DHCP completes.
# If the DHCP-provided nameserver is broken (e.g. QEMU's 10.0.2.3), add
# 8.8.8.8 as a fallback. We write it now so first-login.sh can reach the
# internet immediately after login without waiting for NM to settle.
if ! grep -q '^nameserver' /etc/resolv.conf 2>/dev/null || \
grep -q '^nameserver 10\.0\.2\.3' /etc/resolv.conf 2>/dev/null; then
printf 'nameserver 8.8.8.8\nnameserver 1.1.1.1\n' > /etc/resolv.conf
echo "live-setup: set fallback DNS (8.8.8.8, 1.1.1.1)"
fi
# ── D-Bus session socket for the live user's login session ───────────────
# dbus-launch is called by lightdm-session / Xsession automatically.
# Ensure dbus system bus is accessible (needed by nix and Cinnamon).