Gentoo Archives: gentoo-user

From: Neil Bothwick <neil@××××××××××.uk>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] start ntpdate after network....
Date: Mon, 11 Mar 2019 08:24:05
Message-Id: 20190311082347.32a1e947@digimed.co.uk
In Reply to: Re: [gentoo-user] start ntpdate after network.... by Rich Freeman
1 On Sun, 10 Mar 2019 18:55:29 -0400, Rich Freeman wrote:
2
3 > > Mar 11 00:33:37 localhost ntpdate[4553]: Exiting, name server cannot
4 > > be used: Temporary failure in name resolution (-3)11 Mar 00:33:37
5 > > ntpdate[4553]: name server cannot be used: Temporary failure in name
6 > > resolution (-3)
7 >
8 > Ok, you didn't mention what you're using for a network manager. How
9 > is the network interface being configured in the first place? There
10 > are several ways that it is commonly done.
11 >
12 > Also, what are you using for DNS? In particular, are you running a
13 > local DNS server, or are you relying on a network-supplied DNS server?
14 > How is /etc/resolv.conf being created (likely by the network manager,
15 > but maybe it is being done in another way).
16
17 Also, where is the NTP server? On the local network or external?
18 > ntpdate by default depends on network-online.target and not on
19 > nss-lookup.target, which can sometimes lead to issues if you're
20 > running a DNS server that isn't online when the network is online
21 > (such as a local server).
22
23 The definitions of when a network is actually online are variable, see
24 https://www.freedesktop.org/wiki/Software/systemd/NetworkTarget/
25
26 You may need to add NetworkManager-wait-online.service or
27 systemd-networkd-wait-online.service to the dependencies for ntpdate,
28 which is possibly why Rich is asking how you manage your network.
29
30 I don't use ntpdate here but systemd-timesyncd.service instead, which
31 seems to handle this better.
32
33
34 --
35 Neil Bothwick
36
37 An atheist is someone who feels he has no invisible means of support.

Replies

Subject Author
Re: [gentoo-user] start ntpdate after network.... Tamer Higazi <th982a@××××××××××.com>
Re: [gentoo-user] start ntpdate after network.... (SOLVED) Tamer Higazi <th982a@××××××××××.com>