[CentOS] Problem with ntp

C.L. Martinez
Mon, 09 Mar 2015 16:03:19 -0000

On 03/09/2015 03:42 PM, Paul Heinlein wrote:
> On Mon, 9 Mar 2015, C.L. Martinez wrote:
>
>> Hi all,
>>
>> I have a problem with ntpd daemon in my CentOS7 vm. When I try to list
>> peers, command fails: [....]
>>
>> [root at c7tst ntpstats]# ntpq
>> ntpq>  pe
>> ntpq: read: Connection refused
>> ntpq>
>
> Does "ntpq -4 -c peer" work? If so, then the problem is related
to
> access via IPv6 and this line in ntp.conf:
>
>> #  Permit all access over the loopback interface.  This could
>> #  be tightened as well, but to do so would effect some of
>> #  the administrative functions.
>> restrict 127.0.0.1
>> #restrict ::1
>
> Uncommnent the IPv6 restrict entry, restart ntpd, and try again.

Yep, using "ntpq -4", works:

[root at c7tst tmp]$ ntpq -4
ntpq> pe
      remote           refid      st t when poll reach   delay   offset
  jitter
=============================================================================*lafkor.de
192.93.2.20      2 u    5   64    1   64.748    1.130
  0.268
  primary.server. 134.130.5.17     2 u    4   64    1   83.842    1.120
   0.614
  ntp1.warwicknet 195.66.241.10    2 u    5   64    1   66.697   -1.593
   0.504
  ntp.univ-poitie 193.50.27.66     3 u    5   64    1   72.149   10.225
   2.323
ntpq> quit

Uhmm .. Then, my problem is with Ipv6. I have disabled all IPv6 stack
using ipv6_disable=1 in grub.cfg ...

According to this I need to re-enable ... Correct??