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Fixed NTP sync while using DHCP. #1035

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merged 1 commit into from
Oct 14, 2017

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- What I did

Fixed NTP sync by adding interface to listen when using DHCP.

- How I did it

interface listen eth0

- How to verify it

admin@sonic:~$ show ntp
Command: ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 107.191.112.226 .INIT.          16 -    -  512    0    0.000    0.000   0.000
 192.146.137.13  .INIT.          16 -    -  512    0    0.000    0.000   0.000
 ntp-ext.cosng.n .INIT.          16 -    -  512    0    0.000    0.000   0.000
 ntp3.ds.network .INIT.          16 -    -  512    0    0.000    0.000   0.000
admin@sonic:~$ show ntp
Command: ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
-mail.fangfufu.c 193.190.230.66   2 u   35   64    1  144.849   -3.925   3.381
*tirpitz.netzkon 213.172.96.14    2 u   96   64    1  170.649   -8.120   0.798
+services.quadra 45.79.111.114    3 u   57   64    7   15.488   -8.208   4.318
+panel1.web2.clu 85.214.59.199    3 u   58   64    3  156.818   -8.732   1.505

@@ -29,9 +29,13 @@ server {{ ntp_server }} iburst

#only listen on localhost and eth0 ips (default is to listen on all ip addresses)
interface ignore wildcard
{% if MGMT_INTERFACE %}
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when will MGMT_INTERFACE be not defined? how to assume that eth0 is the one to use.

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For the first question, if the mgmt interface is not in the minigraph, then it will not be defined. I think we do have such cases for the default minigraph. It does not have management ip configured so dhcp is enabled.

for the second qeustion, it is a good question. but we are implicit assuming eth0 in several other places like the interface.j2. I think that is one of basic assumption here. This assumption can be relaxed later, but it is probably not related to this PR.

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@stcheng the changes made here is the similar how interfaces are interpreter int system https://github.com/Azure/sonic-buildimage/blob/master/files/image_config/interfaces/interfaces.j2#L23
MGMT_INTERFACE will not be defined when user will not add corresponding section in minigraph or configDB.

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thanks for the explanations!

@lguohan
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lguohan commented Oct 13, 2017

@taoyl-ms , any concern?

@stcheng stcheng merged commit 118c2dd into sonic-net:master Oct 14, 2017
prsunny pushed a commit that referenced this pull request Apr 21, 2022
[sairedis submodule] commits:
c7cbfe8 Update SAI submodule to support python 3.7 (#1035)
liushilongbuaa pushed a commit to liushilongbuaa/sonic-buildimage that referenced this pull request Jun 20, 2022
Related work items: #49, #58, #107, sonic-net#247, sonic-net#249, sonic-net#277, sonic-net#593, sonic-net#597, sonic-net#1035, sonic-net#2130, sonic-net#2150, sonic-net#2165, sonic-net#2169, sonic-net#2178, sonic-net#2179, sonic-net#2187, sonic-net#2188, sonic-net#2191, sonic-net#2195, sonic-net#2197, sonic-net#2198, sonic-net#2200, sonic-net#2202, sonic-net#2206, sonic-net#2209, sonic-net#2211, sonic-net#2216, sonic-net#7909, sonic-net#8927, sonic-net#9681, sonic-net#9733, sonic-net#9746, sonic-net#9850, sonic-net#9967, sonic-net#10104, sonic-net#10152, sonic-net#10168, sonic-net#10228, sonic-net#10266, sonic-net#10288, sonic-net#10294, sonic-net#10313, sonic-net#10394, sonic-net#10403, sonic-net#10404, sonic-net#10421, sonic-net#10431, sonic-net#10437, sonic-net#10445, sonic-net#10457, sonic-net#10458, sonic-net#10465, sonic-net#10467, sonic-net#10469, sonic-net#10470, sonic-net#10474, sonic-net#10477, sonic-net#10478, sonic-net#10482, sonic-net#10485, sonic-net#10488, sonic-net#10489, sonic-net#10492, sonic-net#10494, sonic-net#10498, sonic-net#10501, sonic-net#10509, sonic-net#10512, sonic-net#10514, sonic-net#10516, sonic-net#10517, sonic-net#10523, sonic-net#10525, sonic-net#10531, sonic-net#10532, sonic-net#10538, sonic-net#10555, sonic-net#10557, sonic-net#10559, sonic-net#10561, sonic-net#10565, sonic-net#10572, sonic-net#10574, sonic-net#10576, sonic-net#10578, sonic-net#10581, sonic-net#10585, sonic-net#10587, sonic-net#10599, sonic-net#10607, sonic-net#10611, sonic-net#10616, sonic-net#10618, sonic-net#10619, sonic-net#10623, sonic-net#10624, sonic-net#10633, sonic-net#10646, sonic-net#10655, sonic-net#10660, sonic-net#10664, sonic-net#10680, sonic-net#10683
taras-keryk pushed a commit to taras-keryk/sonic-buildimage that referenced this pull request Jul 22, 2022
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5 participants