mirror of
https://github.com/linuxkit/linuxkit.git
synced 2025-11-20 20:20:46 +00:00
497b07e57b
We don't actually build it here, we just use the alpine package, which is
already included in the linuxkit/alpine base.
Can be instantiated with a service stanza such as:
- name: qemu-ga
image: "linuxkit/qemu-ga:e5fbcf55926f6e1a96b3e49a392e547e8be1022c"
binds:
- /dev/vport0p1:/dev/vport0p1
The only functionality I've tested is to report IP addresses to the host (e.g.
via `virsh domifaddr`).
The image is configured to use `/dev/vport0p1` by default. If your VM image is
using a different port number then you can either incorporate the rename into
the bind ("/dev/vport1p1:/dev/vport0p1") or override the command with:
command: ["/usr/bin/qemu-ga", "-p", "/dev/vport1p1"]
The mdev tool appears to not create the symlinks which udev would provide
`/dev/virtio-ports/org.qemu.guest_agent.0` hence the need to hardcode the
potentially unstable `/dev/vportNp1`, `N` seems to depend on the number and
order of virtio devices in use. I don't know if it is possible to get mdev to
create these links. For reference the udev rule is:
SUBSYSTEM=="virtio-ports", KERNEL=="vport*", ATTR{name}=="?*", SYMLINK+="virtio-ports/$attr{name}"
See https://wiki.libvirt.org/page/Qemu_guest_agent for more info on the guest
agent.
A suitable stanza is added to `projects/swarmd/swarmd.yml` since that is where
I am using it.
Signed-off-by: Ian Campbell <ian.campbell@docker.com>
13 lines
388 B
Docker
13 lines
388 B
Docker
FROM linuxkit/alpine:630ee558e4869672fae230c78364e367b8ea67a9 AS build
|
|
RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/
|
|
RUN mkdir -p /out/var/run
|
|
RUN apk add --no-cache --initdb -p /out \
|
|
qemu-guest-agent \
|
|
musl
|
|
FROM scratch
|
|
WORKDIR /
|
|
ENTRYPOINT []
|
|
COPY --from=build /out /
|
|
CMD ["/usr/bin/qemu-ga", "-p", "/dev/vport0p1"]
|
|
LABEL org.mobyproject.config='{"net": "host"}'
|