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Difference between revisions of "Package:Ntp"
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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: | ||
{{console|body= | {{console|body= | ||
###i## rc- | ###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: | 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: | ||
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 serversNTPCLIENT_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 ]
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
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