Latest revision as of 20:29, March 31, 2019

Ntp

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Installation

To install the NTP client and server, run the following command:

root # emerge net-misc/ntp

Configuration

Client

The ntp-client command immediately synchronizes your clock, and has separate ntp sync settings from the daemon:

/etc/conf.d/ntp-client - setting ntp-client upstream servers

NTPCLIENT_OPTS="-s -b -u \
	0.pool.ntp.org 1.pool.ntp.org \
	2.pool.ntp.org 3.pool.ntp.org"

Server

The ntpd server is also an ntp-client of upstream servers. Ntpd continuously, and gradually synchronizes the local clock.

/etc/ntp.conf - setting ntpd upstream servers

# Pools for Gentoo users
server 0.pool.ntp.org
server 1.pool.ntp.org
server 2.pool.ntp.org
server 3.pool.ntp.org

Runtime

If you are interested only in synchronizing your local clock against servers, then only add ntp-client to your list of services to start at boot:

root # rc-update add ntp-client

After adding the ntp-client service to the default runlevel, the service can be started by executing the rc command as root:

root # rc
root ##g##* ##!g##Setting the clock via the NTP client 'ntpdate' ...   [ OK ]

Note

Executing the above command normally takes several seconds

If you are instead interested in running an NTP server, add ntpd to your list of services to execute at boot:

root # rc-update add ntpd

Note

ntpd serves as both a client and a server

Hardware Clock

To write your NTP sync time to the hardware at shutdown, and read hw clock at start.

root # echo 'clock_hctosys="YES"' >> /etc/conf.d/hwclock
root # echo 'clock_systohc="YES"' >> /etc/conf.d/hwclock
root # rc-service hwclock restart
root # rc-update add hwclock boot

External Resources

http://keetweej.vanheusden.com/query_ntp.php

@@ Line 4: / Line 4: @@
 |Homepage=http://www.ntp.org/
 }}
 === Installation ===
+To install the NTP client and server, run the following command:
 {{console|body=
 ###i## emerge net-misc/ntp
 }}
 === Configuration ===
 ==== Client ====
+The ntp-client command immediately synchronizes your clock, and has separate ntp sync settings from the daemon:
-===== Hardware Clock =====
+{{file|name=/etc/conf.d/ntp-client|lang=|desc=setting ntp-client upstream servers|body=
-To write your NTP sync time to the hardware at shutdown, and read hw clock at start.
+NTPCLIENT_OPTS="-s -b -u \
+.pool.ntp.org 1.pool.ntp.org \
-{{console|body=
+.pool.ntp.org 3.pool.ntp.org"
-###i## echo 'clock_hctosys="YES"' >> /etc/conf.d/hwclock
-###i## echo 'clock_hctosys="YES"' >> /etc/conf.d/hwclock
-###i## rc-service hwclock restart
-###i## rc-update add hwclock boot
 }}
 ==== Server ====
+The ntpd server is also an ntp-client of upstream servers.  Ntpd continuously, and gradually synchronizes the local clock.
+{{file|name=/etc/ntp.conf|lang=|desc=setting ntpd upstream servers|body=
+# Pools for Gentoo users
+server 0.pool.ntp.org
+server 1.pool.ntp.org
+server 2.pool.ntp.org
+server 3.pool.ntp.org
+}}
 === Runtime ===
+If you are interested only in synchronizing your local clock against servers, then only add {{c|ntp-client}} to your list of services to start at boot:
 {{console|body=
-###i## rc-update add ntpd
 ###i## rc-update add ntp-client
+}}
+After adding the {{c|ntp-client}} service to the {{c|default}} runlevel, the service can be started by executing the {{c|rc}} command as root:
+{{console|body=
 ###i## rc
+##g##* ##!g##Setting the clock via the NTP client 'ntpdate' ...   ##bl##[##!bl## ##g##OK##!g## ##bl##]##!bl##
+}}
+{{note|Executing the above command normally takes several seconds}}
+If you are instead interested in running an NTP server, add {{c|ntpd}} to your list of services to execute at boot:
+{{console|body=
+###i## rc-update add ntpd
 }}
+{{note|{{c|ntpd}} serves as both a client and a server}}
+==== Hardware Clock ====
+To write your NTP sync time to the hardware at shutdown, and read hw clock at start.
+{{console|body=
+###i## echo 'clock_hctosys="YES"' >> /etc/conf.d/hwclock
+###i## echo 'clock_systohc="YES"' >> /etc/conf.d/hwclock
+###i## rc-service hwclock restart
+###i## rc-update add hwclock boot
+}}
+=== External Resources ===
+http://keetweej.vanheusden.com/query_ntp.php
 {{EbuildFooter}}

Difference between revisions of "Package:Ntp"