[Buildroot] [git commit branch/next] package/{chrony, ntp, openntpd}: turn off DNSSEC validation
From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Date: 2021-08-03 23:34:13
Subsystem:
the rest · Maintainer:
Linus Torvalds
commit: https://git.buildroot.net/buildroot/commit/?id=c2db53caca63ea8fca17823e37d496774aefd477 branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/next We have a chicken and egg problem: validation of DNSSEC signatures doesn't work without a correct clock, but to set the correct clock we need to contact NTP servers which requires resolving a hostname, which would normally require DNSSEC validation. Let's break the cycle by excluding NTP hostname resolution from validation for now. Details: https://github.com/systemd/systemd/commit/abf4e5c1d3ad767bc0ed67883e8e4d916af095ec Signed-off-by: James Hilliard <redacted> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> --- package/chrony/chrony.service | 4 ++++ package/ntp/ntpd.service | 4 ++++ package/openntpd/ntpd.service | 4 ++++ 3 files changed, 12 insertions(+)
diff --git a/package/chrony/chrony.service b/package/chrony/chrony.service
index 325b63c492..210122cf5d 100644
--- a/package/chrony/chrony.service
+++ b/package/chrony/chrony.service@@ -4,6 +4,10 @@ After=syslog.target network.target Conflicts=systemd-timesyncd.service [Service] +# Turn off DNSSEC validation for hostname look-ups, since those need the +# correct time to work, but we likely won't acquire that without NTP. Let's +# break this chicken-and-egg cycle here. +Environment=SYSTEMD_NSS_RESOLVE_VALIDATE=0 ExecStart=/usr/sbin/chronyd -n Restart=always
diff --git a/package/ntp/ntpd.service b/package/ntp/ntpd.service
index 7964c5389b..9a0f4c6dbf 100644
--- a/package/ntp/ntpd.service
+++ b/package/ntp/ntpd.service@@ -5,6 +5,10 @@ After=network.target [Service] Type=forking PIDFile=/run/ntpd.pid +# Turn off DNSSEC validation for hostname look-ups, since those need the +# correct time to work, but we likely won't acquire that without NTP. Let's +# break this chicken-and-egg cycle here. +Environment=SYSTEMD_NSS_RESOLVE_VALIDATE=0 ExecStart=/usr/sbin/ntpd -g -p /run/ntpd.pid [Install]
diff --git a/package/openntpd/ntpd.service b/package/openntpd/ntpd.service
index a4ffa7318c..c2924b0c5c 100644
--- a/package/openntpd/ntpd.service
+++ b/package/openntpd/ntpd.service@@ -5,6 +5,10 @@ Conflicts=systemd-timesyncd.service [Service] Type=simple +# Turn off DNSSEC validation for hostname look-ups, since those need the +# correct time to work, but we likely won't acquire that without NTP. Let's +# break this chicken-and-egg cycle here. +Environment=SYSTEMD_NSS_RESOLVE_VALIDATE=0 ExecStart=/usr/sbin/ntpd -s -d [Install]
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