NTP

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Configure Time Servers and Peers

This is one of the differences between the test cluster at the NRAO/AOC and the production cluster at USNO. The test cluster will use NRAO's stratum 1 timeservers and stratum 2 peers. The USNO will use USNO stratum 1 timeservers and stratum 2 peers.

Configure ntpd

Change the peer line as appropriate

Production Server

cat > /etc/ntp.conf << EOM
restrict default kod nomodify notrap nopeer
restrict -6 default kod nomodify notrap nopeer
restrict 127.0.0.1 
restrict -6 ::1
restrict 10.1.34.0 mask 255.255.255.0

driftfile /var/lib/ntp/drift
keys /etc/ntp/keys

server 192.5.41.40
server 192.5.41.41

peer usno-serv-2              # The other USNO infrastructure server
EOM

Test Server

cat > /etc/ntp.conf << EOM
restrict default kod nomodify notrap nopeer
restrict -6 default kod nomodify notrap nopeer
restrict 127.0.0.1 
restrict -6 ::1

driftfile /var/lib/ntp/drift
keys /etc/ntp/keys

server ntp1-a.evla.nrao.edu     # VLA stratum 1
server ntp1-b.evla.nrao.edu     # VLA stratum 1
server yed.gb.nrao.edu          # GB stratum 1

peer usno-serv-2              # The other USNO infrastructure server
EOM

Change the peer line as appropriate

restart ntpd

/etc/init.d/ntpd restart

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