|Source Repository:||Repository:Gentoo Portage Tree|
Summary: Network Time Protocol suite/programs
- Allow ntp to be installed alongside openntpd
- Add support for PARSE clocks
- Provide support for Samba's signing daemon (needed for Active Directory domain controllers)
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To install the NTP client and server, run the following command:
# emerge net-misc/ntp
The ntp-client command immediately synchronizes your clock, and has separate ntp sync settings from the daemon:
NTPCLIENT_OPTS="-s -b -u \ 0.pool.ntp.org 1.pool.ntp.org \ 2.pool.ntp.org 3.pool.ntp.org"
The ntpd server is also an ntp-client of upstream servers. Ntpd continuously, and gradually synchronizes the local clock.
# Pools for Gentoo users server 0.pool.ntp.org server 1.pool.ntp.org server 2.pool.ntp.org server 3.pool.ntp.org
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:
# 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:
# rc * 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:
# rc-update add ntpd
ntpd serves as both a client and a server
To write your NTP sync time to the hardware at shutdown, and read hw clock at start.
# echo 'clock_hctosys="YES"' >> /etc/conf.d/hwclock # echo 'clock_systohc="YES"' >> /etc/conf.d/hwclock # rc-service hwclock restart # rc-update add hwclock boot