Difference between revisions of "Package:Ntp"

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|Homepage=http://www.ntp.org/
|Homepage=http://www.ntp.org/
}}
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=== Installation ===
=== Installation ===
To install the NTP client and server, run the following command:
{{console|body=
{{console|body=
###i## emerge net-misc/ntp
###i## emerge net-misc/ntp
}}
}}
=== Configuration ===
=== Configuration ===
==== Client ====
==== 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 \
 
0.pool.ntp.org 1.pool.ntp.org \
{{console|body=
2.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 ====
==== 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 ===
=== 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=
{{console|body=
###i## rc-update add ntpd
###i## rc-update add ntp-client
###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
###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}}
{{EbuildFooter}}

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