jackbenny/swedish-ntp
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Jack-Benny Persson 2020-05-24 10:39:15 +02:00
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FROM alpine:3
RUN apk add openntpd && mkdir -m 1777 /var/empty/tmp
COPY ./ntpd.conf /etc/ntpd.conf
EXPOSE 123/udp
ENTRYPOINT ["/usr/sbin/ntpd", "-d", "-f", "/etc/ntpd.conf"]

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# OpenNTPD with Swedish Netnod NTP-servers
This is a simple and small OpenNTPD container pre-configured with NTP-servers
from the Swedish Netnod. All servers have the same weight, so it should work
equally well wherever you live in Sweden.
![Docker Image Size (latest by date)](https://img.shields.io/docker/image-size/jackbenny/swedish-ntp?sort=date)
![Docker Pulls](https://img.shields.io/docker/pulls/jackbenny/swedish-ntp)
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![Docker Cloud Automated build](https://img.shields.io/docker/cloud/automated/jackbenny/swedish-ntp)
![Docker Cloud Build Status](https://img.shields.io/docker/cloud/build/jackbenny/swedish-ntp)
## Usage
### As a client
To simply use it as a client to synchronize your local computer clock, just
run it and add the capability to change the clock. For example:
docker run -d --name ntp --cap-add SYS_TIME --restart=always swedish-ntp
### As a server
You need to publish UDP port 123 to be able to connect to the OpenNTPD daemon.
For example:
docker run -d --name ntp --cap-add SYS_TIME --publish 123:123/udp --restart=always swedish-ntp
# Additional information
For more information about Netnod NTP servers, see [Netnod's NTP
service](https://www.netnod.se/ntp/network-time-protocol-%28ntp%29-services-).
Please note that I am not in any way affiliated with Netnod.
For more information about OpenNTPD, see [OpenNTPD](http://www.openntpd.org/).

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listen on *
server mmo1.ntp.se weight 1
server mmo2.ntp.se weight 1
server gbg1.ntp.se weight 1
server gbg2.ntp.se weight 1
server sth1.ntp.se weight 1
server sth2.ntp.se weight 1
server svl1.ntp.se weight 1
server svl2.ntp.se weight 1
sensor *
constraints from "https://www.google.se"