DevHeads IoT Integration Server•8mo ago

Which package in Yocto core-image-minimal.bb handles automatic NTP synchronization?

Hello guys @Middleware & OS , I'm managing this system time on a Yocto-based Linux distribution that's Zeus release using NTP. Without me installing ntpdate, the system automatically synchronizes with an unknown NTP server when connected to the internet via WiFi. Disconnecting stops synchronization, indicating a built-in NTP client. Given that the distribution is gotten from core-image-minimal.bb, which package provides this NTP client?

Solution:

it picks the ntp from those options

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9 Replies

zuka•8mo ago

systemd-timesyncd present in the systemd- service list?

Marvee Amasi•8mo ago

@zuka Yh, systemd-timesyncd is listed in systemd-service list. The built-in NTP client is likely systemd-timesyncd

zuka•8mo ago

so are you able to check the dependency list for this systemd-timesyncd?

Marvee Amasi•8mo ago

Oh , that makes sense. Thanks for the heads up that's definitely something I should look into. But do you have any experience with checking which specific NTP server systemd-timesyncd uses? Want to see where it's grabbing the time from. @zuka

zuka•8mo ago

can you share the content of /etc/systemd/timesyncd.conf ?

Marvee Amasi•8mo ago

Okay , a moment

Marvee Amasi•8mo ago

# NTP=pool.ntp.org  ;
FallbackNTP=0.ubuntu.pool.ntp.org 1.ubuntu.pool.ntp.org 2.ubuntu.pool.ntp.org

[Time]
#Stub = yes  ;

# NTP=pool.ntp.org  ;
FallbackNTP=0.ubuntu.pool.ntp.org 1.ubuntu.pool.ntp.org 2.ubuntu.pool.ntp.org

[Time]
#Stub = yes  ;

Solution

zuka•8mo ago

it picks the ntp from those options

Marvee Amasi•8mo ago

Okay thanks

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Which package in Yocto core-image-minimal.bb handles automatic NTP synchronization?

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