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Exact time in the FI network
A server can be used to synchronize the exact time of computers
time.fi.muni.cz . The server provides the exact time log
NTP (or
SNTP ) from anywhere on the Internet and protocol
time (RFC 868) within the FI network.
This server is part of a distributed network of NTP servers NTP Pool Project , see also monitoring graphs for IPv4 and for IPv6 .
You can also read something about our practical experience with NTP operation in the article Accurate time and network transparency our blog.
Unix time synchronization
You must have the NTP daemon running on your computer for accurate synchronization. In many distributions, one very simple part is the default installation:
systemd-timesyncd . If you have one and want to use the exact time faculty server, all you need is in the configuration file
/etc/systemd/timesyncd.conf set in section
[Time] line
NTP=time.fi.muni.cz and restart the daemon using
systemctl restart systemd-timesyncd . Verify that the settings are correct via
timedatectl timesync-status : on the first line you should see the name of the currently set server.
You can also install the classic NTP daemon (typically the
ntp , No
openntpd ). In the configuration file
/etc/ntp.conf then set up an NTP faculty server by adding a line
server time.fi.muni.cz iburst and commenting lines with directives
pool .
The alternative is
chrony (
chronyd ). If you are a server
time.fi.muni.cz have not been set during installation, this can be done by commenting out the directive line
pool in the file
/etc/chrony.conf and adding a line
server time.fi.muni.cz iburst .
Time synchronization on Windows
In Windows, the command can be used
w32tm /config /manualpeerlist:time.fi.muni.cz /syncfromflags:manual /update
which must be run on the command line with administrator rights. The Windows Time service must be running for the command to succeed. It can be started from the command line with the command
net start w32time , automatic start after start can be set by the command
sc config w32time start=auto .
To check the settings, use
w32tm /query /configuration