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| author | Matthias P. Braendli <matthias.braendli@mpb.li> | 2019-11-25 16:23:12 +0100 |
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| committer | Matthias P. Braendli <matthias.braendli@mpb.li> | 2019-11-25 16:23:12 +0100 |
| commit | 891031ddc40a019605ab1250fc631429a965e437 (patch) | |
| tree | 57c5b10bb547769f34106bc551ca5d759d9be270 | |
| parent | b24baf8a1a59f87fae84a80115beaa73d3e5cd4f (diff) | |
| download | mmbtools-doc-891031ddc40a019605ab1250fc631429a965e437.tar.gz mmbtools-doc-891031ddc40a019605ab1250fc631429a965e437.tar.bz2 mmbtools-doc-891031ddc40a019605ab1250fc631429a965e437.zip | |
Mention NTP startup check
| -rw-r--r-- | systemenvironments.tex | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/systemenvironments.tex b/systemenvironments.tex index 1267c0d..14e656f 100644 --- a/systemenvironments.tex +++ b/systemenvironments.tex @@ -146,13 +146,18 @@ synchronised to the clock time which is being transmitted by the multiplex to which it has been tuned. The system needs to run a NTP client that synchronises the system time over the -network. Correct synchronisation can be checked using the \texttt{lpeers} -command of the \texttt{ntpq} tool. The magnitude of the offset should be below -$10$\ms. +network. Correct synchronisation can be checked using \texttt{chronyc tracking} +or the the \texttt{lpeers} command of the \texttt{ntpq} tool, depending on if +you use chrony or openntp. +The magnitude of the offset should be below $10$\ms. The performance of the NTP synchronisation should also be monitored permanently during operation. +ODR-DabMux can run a command at startup to verify if the NTP client is properly +working, using the \texttt{startupcheck} setting. This can be used to call +\texttt{ntp-wait} or \texttt{chronyc waitsync} to wait for proper NTP sync. + \subsection{Monitoring through SNMP} There is ongoing work to make the monitoring of the tools possible using SNMP. Please see \url{https://wiki.opendigitalradio.org/SNMP} for information about |