What is in this article
Systems with No RTC (real-time clock)
Includes the Raspberry Pi family of SBC (single board computers).
Disable hwclock (if enabled; on the Raspberry Pi it has already been disabled).
service hwclock stop rc-update hwclock disable boot
Enable swclock (only useful if
/sbin/openrc-runis preserved across boots. For a system mode (classic) install this helps. For a diskless, data, or our hybrid install, it isn’t. Also note that for the Raspberry Pi it comes pre-enabled.
rc-update swclock enable boot service swclock start
Low entropy systems
Includes headless Raspberry Pi systems.
Add and enable RNG tools package
- The Raspberry Pi has a hardware RNG
- rng-tools includes the ‘jitter’ entropy source which is an improvement on ‘haveged’ so we recommend using
rng-toolsrather than the
havegedpackage. (Thank you to Dermot Bradley for pointing this out).
apk add rng-tools rc-update add rngd boot default service rngd start