| [chrony-users] chronyd: Can' Synchronize WHY ? |
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- To: <chrony-users@xxxxxxxxxxxxxxxxxxxx>
- Subject: [chrony-users] chronyd: Can' Synchronize WHY ?
- From: <thomas.schmid@xxxxxxxxx>
- Date: Thu, 8 Sep 2011 03:00:25 +0000
- Accept-language: de-CH, en-US
- Thread-index: Acxt0eoyEKrFlFghQqmmfEP3FHpkcg==
- Thread-topic: chronyd: Can' Synchronize WHY ?
Hi all,
I get a lot of the following chronyd messages in syslog:
Sep 8 00:50:52 Com-PC chronyd[3240]: Selected source <WAN-IP1>
Sep 8 00:52:01 Com-PC chronyd[3240]: Can't synchronise: no majority
Sep 8 01:02:18 Com-PC chronyd[3240]: Selected source <WAN-IP1>
Sep 8 01:02:59 Com-PC chronyd[3240]: Can't synchronise: no majority
Sep 8 01:03:27 Com-PC chronyd[3240]: Selected source <WAN-IP1>
Sep 8 01:04:09 Com-PC chronyd[3240]: Can't synchronise: no majority
Sep 8 01:04:35 Com-PC chronyd[3240]: Selected source <WAN-IP1>
Sep 8 01:05:18 Com-PC chronyd[3240]: Can't synchronise: no majority
...
The relevant section from chrony.conf:
....
; remote-WAN
server <WAN-IP1> iburst prefer presend 5
; remote-WAN
server <WAN-IP2> presend 5
; local-LAN
server su-server1 maxpoll 7
; local-LAN
server lu-server maxpoll 7
chronyc> sources
210 Number of sources = 4
MS Name/IP address Stratum Poll LastRx Last sample
============================================================================
^x <WAN-IP1> 1 6 49 +13us[ -877us] +/- 1148us
^x <WAN-IP2> 2 6 46 +192ms[ +192ms] +/- 56ms
^x SU-Server1.<domain> 0 7 10y +0ns[ +0ns] +/- 0ns
^x LU-Server.<domain> 0 7 10y +0ns[ +0ns] +/- 0ns
chronyc> sourcestats
210 Number of sources = 4
Name/IP Address NP NR Span Frequency Freq Skew Offset Std Dev
==============================================================================
<WAN-IP1> 5 3 275 -2495.179 7713.381 -50ms 2452us
<WAN-IP2> 4 3 193 568.775 561.325 +202ms 1119us
SU-Server1.<domain>. 0 0 0 0.000 2000.000 +0ns 4000ms
LU-Server.<domain> 0 0 0 0.000 2000.000 +0ns 4000ms
Both reachable time sources are DCF77 (Meinberg M300 PZF, Host "PZF1" and "PZF2"):
- <WAN-IP1> is the Meinberg PZF1 itself (-> Stratum 1)
- <WAN-IP2> is the Meinberg PZF2 run via WinXP+Meinberg NTPd package, simulating an
intermediate time server (-> Stratum 2)
Would somebody please explain to me in "laymen's terms" why chrony cannot come to a selection ?
Note: ntpd shows the same behaviour by switching it sys_peer also quite frequently.
Thanks,
Thomas Schmid
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