mirror of
https://github.com/linuxkit/linuxkit.git
synced 2025-12-25 10:02:31 +00:00
d24d0bd559
Some hypervisors (e.g. hyperkit / xhyve) don't provide a good way to keep the VM's clock in sync with the Host's clock. NTP will usually keep the clocks together, but after a the host or VM is suspended and resumed the clocks can be suddenly too far apart for NTP to work properly. This simple daemon listens on an AF_VSOCK port and resynchronises the VM clock from the virtualised hardware clock. This is a Go conversion of original C code written by Magnus Skjegstad <magnus@skjegstad.com> Signed-off-by: David Scott <dave.scott@docker.com>
23 lines
776 B
Docker
23 lines
776 B
Docker
FROM linuxkit/alpine:2e362f4459ba4491655061cccdd2fcc7a2de5eb3 AS mirror
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RUN apk add --no-cache go musl-dev git
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ENV GOPATH=/go PATH=$PATH:/go/bin
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ENV VIRTSOCK_COMMIT=a381dcc5bcddf1d7f449495c373dbf70f8e501c0
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RUN mkdir -p $GOPATH/src/github.com/linuxkit && \
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cd $GOPATH/src/github.com/linuxkit && \
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git clone https://github.com/linuxkit/virtsock.git && \
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cd virtsock && \
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git checkout $VIRTSOCK_COMMIT
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COPY . /go/src/host-timesync-daemon
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RUN go-compile.sh /go/src/host-timesync-daemon
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FROM scratch
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ENTRYPOINT []
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CMD []
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WORKDIR /
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COPY --from=mirror /go/bin/host-timesync-daemon /usr/bin/host-timesync-daemon
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CMD ["/usr/bin/host-timesync-daemon", "-port", "0xf3a4"]
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LABEL org.mobyproject.config='{"binds": [ "/dev/rtc0:/dev/rtc0" ], "capabilities": ["CAP_SYS_TIME"]}'
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