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Difference between revisions of "Package:Ntp"

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(Added descriptions of what the different commands on the page mean.)
m (Removed irritating white spaces between different sections.)
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###i## emerge net-misc/ntp
###i## emerge net-misc/ntp
}}
}}
=== Configuration ===
=== Configuration ===
==== Client ====
==== Client ====
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2.pool.ntp.org 3.pool.ntp.org"
2.pool.ntp.org 3.pool.ntp.org"
}}
}}
==== Server ====
==== Server ====
The ntpd server is also an ntp-client of upstream servers.  Ntpd continuously, and gradually synchronizes the local clock.
The ntpd server is also an ntp-client of upstream servers.  Ntpd continuously, and gradually synchronizes the local clock.
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server 3.pool.ntp.org
server 3.pool.ntp.org
}}
}}
=== Runtime ===
=== 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:
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:
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}}
}}
{{note|{{c|ntpd}} serves as both a client and a server}}
{{note|{{c|ntpd}} serves as both a client and a server}}
==== Hardware Clock ====
==== Hardware Clock ====
To write your NTP sync time to the hardware at shutdown, and read hw clock at start.
To write your NTP sync time to the hardware at shutdown, and read hw clock at start.
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###i## rc-update add hwclock boot
###i## rc-update add hwclock boot
}}
}}
=== External Resources ===
=== External Resources ===
http://keetweej.vanheusden.com/query_ntp.php
http://keetweej.vanheusden.com/query_ntp.php
{{EbuildFooter}}
{{EbuildFooter}}

Revision as of 16:06, June 21, 2015

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-updated 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