NTP synchronized: no

[Rick Stevens]

On 09/08/2015 03:27 AM, John Pilkington wrote:
> On 08/09/15 10:52, Ed Greshko wrote:
>> On 09/08/15 17:29, Patrick Dupre wrote:
>>> I cannot synchronize the date:
>>> My undestanding is that it should be set by:
>>> timedatectl set-ntp yes
>>>
>>> Here, the results of some commands:
>>>
>>> netstat -a |grep ntp
>>> udp        0      0 localhost.localdo:51314 ns346276.ip-94-23-3:ntp
>>> ESTABLISHED
>>> udp        0      0 localhost.localdo:39994 tomia.ordimatic.net:ntp
>>> ESTABLISHED
>>> udp        0      0 localhost.localdo:45035 ntp.tuxfamily.net:ntp
>>> ESTABLISHED
>>> udp        0      0 localhost.localdo:49209 host3.nuagelibre.or:ntp
>>> ESTABLISHED
>>> warning, got bogus l2cap line.
>
> That looks different: here's mine.
>
> [john at HP_Box ~]$ netstat -a | grep ntp
> udp        0      0 0.0.0.0:ntp             0.0.0.0:*
> udp6       0      0 [::]:ntp                [::]:*
> [john at HP_Box ~]$ netstat -a | grep 323
> udp        0      0 localhost:323           0.0.0.0:*
> udp6       0      0 localhost:323           [::]:*
> plus a few irrelevant responses.
>
> but ...grep 123 shows nothing that looks relevant.
>
> Quoting from the faq:
>
> Perhaps you have a firewall set up in a way that blocks packets on port
> 323/udp.  You need to amend the firewall configuration in this case.

ntp is UDP port 123 as is shown in your output. By default, netstat
will translate port numbers to services found in your /etc/services
file. If you want to verify it, try "netstat -apn | grep :123" and you
should see something on that port:

[root at prophead ~]# netstat -pna | grep :123
...
udp        0      0 192.168.1.50:58156      104.41.150.68:123 
ESTABLISHED 841/chronyd
...

So you can see that chronyd is connected to 104.41.150.68 via UDP port 123.
----------------------------------------------------------------------
- Rick Stevens, Systems Engineer, AllDigital    ricks at alldigital.com -
- AIM/Skype: therps2        ICQ: 226437340           Yahoo: origrps2 -
-                                                                    -
-   "Do you suffer from long-term memory loss?"  "I don't remember"  -
-                            -- Chumbawumba, "Amnesia" (TubThumping) -
----------------------------------------------------------------------