Configuring NTP Server & Client in Solaris 10

Configuring NTP ( Network Time Protocol) on Solaris 10
Configuring an NTP Server 
1. Edit file ntp.conf

bash> cp /etc/inet/ntp.server /etc/inet/ntp.conf
bash> vi /etc/inet/ntp.conf

Add server address for ntp server

server 1.id.pool.ntp.org
server 1.asia.pool.ntp.org
server 3.asia.pool.ntp.org
broadcast 224.0.1.1 ttl 4
 
enable auth monitor
driftfile /var/ntp/ntp.drift
statsdir /var/ntp/ntpstats/
filegen peerstats file peerstats type day enable
filegen loopstats file loopstats type day enable
filegen clockstats file clockstats type day enable
 
keys /etc/inet/ntp.keys
trustedkey 0
requestkey 0
controlkey 0

Save your change configuration
2. Refresh daemon NTP

bash> touch /var/ntp/ntp.drift
bash> svcadm enable svc:/network/ntp

Configuring an NTP Client 
1. Edit file ntp.conf

bash> cp /etc/inet/ntp.client /etc/inet/ntp.conf

bash> touch /var/ntp/ntp.drift

bash> vi /etc/inet/ntp.conf
    server 10.10.10.1 prefer # IP NTP Server  Primary
    server 10.10.10.2         # IP NTP Server Secondary
    driftfile /var/ntp/ntp.drift

2. Refresh daemon NTP

bash> svcadm enable svc:/network/ntp
bash> svcadm refresh svc:/network/ntp
bash> svcadm restart svc:/network/ntp

You can use "ntpq -p" to monitor ntpd's performance.

Now that we have a working configuration file, we need to fire up NTP and let it sync up with our chosen servers.  The best practice here is to use the ntpdate command a few times to get the box date and time as close as reasonable to accurate before turning NTP loose to do its thing.  The NTP daemon is designed to slowly adjust the clock whereas ntpdate will set it correctly immediately so this gets the initial time correct right away.

bash> svcadm disable svc:/network/ntp
bash> ntpdate pool.ntp.org; ntpdate pool.ntp.org
bash> svcadm enable svc:/network/ntp

At this point, the NTP Daemon should be running and your time should be extremely accurate.  You can verify that NTP is running by looking in the process pool for /usr/lib/inet/xntpd which is the actual name of the NTP Daemon running on Solaris 10