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Setup

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chrony

The following commands install chrony and modify the basic chrony.conf file to remove usage of the default pool and any configured servers, and replace this with the 3 (very reliable) time servers from the German PTB.

Code Block
# Install chrony
apt-get install chrony

# Replace all existing servers
sed -i -e "s/^server /# server /" /etc/chrony/chrony.conf
# Replace pool setting
sed -i -e "s/^pool /# pool /" /etc/chrony/chrony.conf
# Add PTB Servers
cat << EOFF >> /etc/chrony/chrony.conf

# Servers to use
server ptbtime1.ptb.de iburst
server ptbtime2.ptb.de iburst
server ptbtime3.ptb.de iburst
EOFF

# Enable Chrony
systemctl enable chrony

# Stop (just in case it was started), then start and get status
systemctl stop chronydchrony
systemctl start chronydchrony

Check

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chrony

Code Block
systemctl status chronydchrony
chronyc sources