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Difference between revisions of "Package:Chrony"
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{{console|body= | {{console|body= | ||
###i## emerge chrony | ###i## emerge chrony | ||
}} | }} | ||
Use something like the following for your | {{important|Chrony ''' ''requires'' ''' you set an upstream ntp server.}} | ||
For broadband users: | |||
{{console|body=###i## echo "server pool.ntp.org iburst" >> /etc/chrony/chrony.conf}} | |||
For dial up or slow connections: | |||
{{console|body=###i## echo "server pool.ntp.org offline" >> /etc/chrony/chrony.conf}} | |||
Use something like the following for your {{c|/etc/chrony/chrony.conf}}: | |||
<pre> | <pre> | ||
| Line 39: | Line 46: | ||
Chronyd can then be started immediately by running <code>rc</code> to start all new services: | Chronyd can then be started immediately by running <code>rc</code> to start all new services: | ||
=== Set Time === | |||
To test chronyd, set the time immediately, & exit: | |||
{{console|body=###i## chronyd -q}} | |||
=== Service === | |||
To start the chronyd service: | |||
{{console|body= | {{console|body= | ||
###i## rc-update add chronyd default | |||
###i## rc | ###i## rc | ||
}} | }} | ||
Because Funtoo Linux starts network daemons without waiting for an Internet connection to become available, and because chrony will attempt to synchronize the clock over the Internet when it first starts, you must manually configure chronyd to be dependent on whatever method you use to enable your outbound network connectivity. For example, if using | Because Funtoo Linux starts network daemons without waiting for an Internet connection to become available, and because chrony will attempt to synchronize the clock over the Internet when it first starts, you must manually configure chronyd to be dependent on whatever method you use to enable your outbound network connectivity. For example, if using {{c|dhcpcd}}, add the following to {{c|/etc/conf.d/chronyd}}: | ||
<pre> | <pre> | ||
| Line 49: | Line 63: | ||
</pre> | </pre> | ||
You should notice a marked improvement in your system clock's accuracy. If your system time was off by a significant amount, | You should notice a marked improvement in your system clock's accuracy. If your system time was off by a significant amount, {{c|chronyd}} will gradually correct your clock while the system runs. | ||
==== 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 | |||
}} | |||
[[Category:System]] | [[Category:System]] | ||
Latest revision as of 02:05, May 30, 2015
Chrony
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Accurate System Time (NTP)
It's important that your Funtoo Linux system has an accurate clock. NTP (network time protocol) can ensure your clock is accurate at all time.
The recommended NTP client/server is net-misc/chrony.
root # emerge chrony
Chrony requires you set an upstream ntp server.
For broadband users:
root # echo "server pool.ntp.org iburst" >> /etc/chrony/chrony.conf
For dial up or slow connections:
root # echo "server pool.ntp.org offline" >> /etc/chrony/chrony.conf
Use something like the following for your /etc/chrony/chrony.conf:
server time.apple.com maxupdateskew 100 driftfile /etc/chrony/chrony.drift keyfile /etc/chrony/chrony.keys commandkey 1 dumponexit dumpdir /var/log/chrony initstepslew 10 time.apple.com logdir /var/log/chrony log measurements statistics tracking logchange 0.5 mailonchange me@emailprovider.com 0.5 rtcfile /etc/chrony/chrony.rtc rtconutc sched_priority 1 lock_all
Chronyd can then be started immediately by running rc to start all new services:
Set Time
To test chronyd, set the time immediately, & exit:
root # chronyd -q
Service
To start the chronyd service:
root # rc-update add chronyd default root # rc
Because Funtoo Linux starts network daemons without waiting for an Internet connection to become available, and because chrony will attempt to synchronize the clock over the Internet when it first starts, you must manually configure chronyd to be dependent on whatever method you use to enable your outbound network connectivity. For example, if using dhcpcd, add the following to /etc/conf.d/chronyd:
rc_need=dhcpcd
You should notice a marked improvement in your system clock's accuracy. If your system time was off by a significant amount, chronyd will gradually correct your clock while the system runs.
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