I'm configuring NTP symmetric modes.
Say I have Peer A (192.168.101.1) and Peer B(192.168.101.2) and configure their
ntp.conf as follows:
# Peer A peer 192.168.101.2 server 127.127.1.0 fudge 127.127.1.0 stratum 10
For Peer B, I set both its
peer to A.
# Peer B peer 192.168.101.1 server 127.127.1.0 fudge 127.127.1.0 stratum 14
If I set their time apart (like 10 minutes), they each will synchronize locally instead of with each other(may I should've waited longer).
And I have to add A as B's server in B's
# Peer B peer 192.168.101.1 server 192.168.101.1 server 127.127.1.0 fudge 127.127.1.0 stratum 14
Then B will synchronize its time to A quickly.
This leaves me in doubt about the symmetric mode's effectiveness. Why not just set A as B's server and both of them as clients' servers? If A is down, the cluster time can still fail over to B and stay in synchronism.