Enhancement #1964
Ntp: force ntpd syncronization
| Status: | CLOSED | Start date: | 05/30/2013 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | 05/30/2013 | |
| Assignee: | - | % Done: | 100% | |
| Category: | nethserver-ntp | |||
| Target version: | v6.4-beta2 | |||
| Resolution: | NEEDINFO: | No |
Description
If the difference between local and remote server is too high, ntpd can't syncronize the clocks.
We should force the ntp syncronization before start.
Patch:
--- nethserver-ntp-clock-adjust.ori 2013-05-20 15:27:17.480658645 +0200
+++ nethserver-ntp-clock-adjust 2013-05-20 15:29:42.482824328 +0200
@@ -34,6 +34,10 @@
my $status = $db->get_prop('ntpd', 'status') || '';
if($status eq 'enabled') {
+ if ( system("/sbin/service ntpd status 2&>/dev/null") ne 0 ) {
+ # force syncronization
+ qx(/usr/sbin/ntpd -q)
+ }
qx(/sbin/service ntpd restart);
} else {
# manual date setting
Related issues
Associated revisions
/etc/ntp.conf template (10servers): append "iburst" option to "server" configuration command. Refs #1964
nethserver-ntp-clock-adjust action: restart ntpd in the usual way. Refs #1964
History
#1
Updated by Davide Principi about 8 years ago
- Due date set to 05/30/2013
- Status changed from NEW to ON_DEV
- Assignee set to Davide Principi
- Start date set to 05/30/2013
- % Done changed from 0 to 30
- Estimated time set to 2.00
#2
Updated by Davide Principi about 8 years ago
From ntpd man page
The initial delay to set the clock can be reduced using
the iburst keyword with the server configuration command
[...]
most applications will probably want to specify the iburst keyword with the server configuration command. With this keyword a volley of messages are exchanged to groom the data and the clock is set in about 10 s
I tested it with pool.ntp.org. The system clock was set about 10 minutes early. In /etc/ntp.conf
... server 0.pool.ntp.org iburst server 1.pool.ntp.org iburst server 2.pool.ntp.org iburst server 3.pool.ntp.org iburst
In /var/log/messages:
May 30 18:16:13 davidep6 ntpd[6728]: ntpd 4.2.4p8@1.1612-o Fri Feb 22 11:23:27 UTC 2013 (1) May 30 18:16:13 davidep6 ntpd[6729]: precision = 0.098 usec May 30 18:16:13 davidep6 ntpd[6729]: Listening on interface #0 wildcard, 0.0.0.0#123 Disabled May 30 18:16:13 davidep6 ntpd[6729]: Listening on interface #1 wildcard, ::#123 Disabled May 30 18:16:13 davidep6 ntpd[6729]: Listening on interface #2 lo, ::1#123 Enabled May 30 18:16:13 davidep6 ntpd[6729]: Listening on interface #3 eth0, fe80::a00:27ff:fe04:72eb#123 Enabled May 30 18:16:13 davidep6 ntpd[6729]: Listening on interface #4 lo, 127.0.0.1#123 Enabled May 30 18:16:13 davidep6 ntpd[6729]: Listening on interface #5 eth0, 192.168.9.6#123 Enabled May 30 18:16:13 davidep6 ntpd[6729]: Listening on routing socket on fd #22 for interface updates May 30 18:16:13 davidep6 ntpd[6729]: kernel time sync status 2040 May 30 18:16:13 davidep6 ntpd[6729]: frequency initialized 436.432 PPM from /var/lib/ntp/drift May 30 18:16:21 davidep6 ntpd[6729]: synchronized to 212.45.144.88, stratum 2 May 30 18:31:00 davidep6 ntpd[6729]: time reset +879.048993 s May 30 18:31:00 davidep6 ntpd[6729]: kernel time sync status change 2001
When ntpd is restarted the clock is stepped (time reset +879.048993 s).
This seems a viable solution, what do you think?
#3
Updated by Davide Principi about 8 years ago
- Status changed from ON_DEV to MODIFIED
- % Done changed from 30 to 70
In nethserver-dev: nethserver-ntp-1.0.3-2.1.0git35a8ac16.ns6.noarch
#4
Updated by Davide Principi about 8 years ago
- Status changed from MODIFIED to ON_QA
- % Done changed from 70 to 80
In nethserver-testing:
nethserver-ntp-1.0.4-1.ns6.noarch.rpm
#5
Updated by Davide Principi about 8 years ago
- Assignee deleted (
Davide Principi)
#6
Updated by Giacomo Sanchietti about 8 years ago
- Assignee set to Giacomo Sanchietti
#7
Updated by Giacomo Sanchietti about 8 years ago
- Status changed from ON_QA to VERIFIED
- % Done changed from 80 to 100
It works correctly setting a time in the past or in the future:
Jul 24 07:31:35 localhost ntpd[29534]: time reset -9517.760581 s
Jul 24 07:31:09 localhost ntpd[29506]: time reset +4854.115579 s
Marking VERIFIED
#8
Updated by Davide Principi about 8 years ago
- Status changed from VERIFIED to CLOSED
- Assignee deleted (
Giacomo Sanchietti)
Released!
In nethserver-updates:
nethserver-ntp-1.0.4-1.ns6.noarch.rpm