NTP Server on LINUX --deb

daripada nganggur nungguin pembimbing, saya ingin berbagi saja mengenai servering --WTF again? :ngakak . memang kegiatan saya pada saat PSG ini adalah mengadministrasi server 1 kompleks.

kali ini saya ingin berbagi mengenai membuat NTP Server di Linux DEB (terserah... pokoknya linux turunan Debian paketnya DEB). Konfigurasi NTP server sangatlah mudah, bahkan yang termudah :ngacir

To the Point. Open Terminal and Type :

apt-get install ntp ntpdate

tunggu, kemudian setelah itu tinggal konfigurasi NTP nya nganut ke siapa, yang boleh akses siapa, dan lain lain. Jangan khawatir, cukup mudah (nggak kaya squid)

nano /etc/ntp.conf

Here is the configuration

# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help

driftfile /var/lib/ntp/ntp.drift


# Enable this if you want statistics to be logged.
#statsdir /var/log/ntpstats/

statistics loopstats peerstats clockstats
filegen loopstats file loopstats type day enable
filegen peerstats file peerstats type day enable
filegen clockstats file clockstats type day enable


# You do need to talk to an NTP server or two (or three).
#server ntp.ubuntu.com
server 127.127.1.0
fudge 127.127.1.0 stratum 10

# Access control configuration; see /usr/share/doc/ntp-doc/html/accopt.html for
# details.  The web page 
# might also be helpful.
#
# Note that "restrict" applies to both servers and clients, so a configuration
# that might be intended to block requests from certain clients could also end
# up blocking replies from your own upstream servers.

# By default, exchange time with everybody, but don't allow configuration.
restrict -4 default kod notrap nomodify nopeer noquery
restrict -6 default kod notrap nomodify nopeer noquery
 restrict 0.0.0.0 mask 0.0.0.0 nomodify notrap 
# Local users may interrogate the ntp server more closely.
restrict 127.0.0.1
restrict ::1

# Clients from this (example!) subnet have unlimited access, but only if
# cryptographically authenticated.
#restrict 192.168.123.0 mask 255.255.255.0 notrust


# If you want to provide time to your local subnet, change the next line.
# (Again, the address is an example only.)
#broadcast 192.168.123.255

# If you want to listen to time broadcasts on your local subnet, de-comment the
# next lines.  Please do this only if you trust everybody on the network!
#disable auth
#broadcastclient

Keterangan :
1. Biru => Beri tanda pagar Di awal "server *" sehingga komp yang kita buat tidak nganut ke server itu
2. Kuning Tebal => Tambahkan, agar nganut ke komp kita sendiri.
3. Merah => Beri tanda pagar di awalnya
4. Kuning Tebal => tambahkan siapa saja yang boleh mengakses, agar tidak pusing, nganut aja ma konfig diatas (all in)

kalaiu sudah benar semua dan sesuaikan dengan kemauan, tinggal restart dan cek.

/etc/init.d/ntp restart
ntpq -p

kalau bagian jitter lebih dari 0.000 maka sukses (ketepatan waktu)

remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*LOCAL(0)        .LOCL.          10 l   39   64  377    0.000    0.000   0.001

tada... mudah kan? nggak njelimet kaya radius. hehe... daripada harus menggunakan alamat IP, lebih baik menggunakan Domain. nah... ntu nanti kita bahas di pertemuan selanjutnya... dah

=> thank to betty

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