kubernetes/pkg/kubelet/Dockerfile at 5dca63ca7a0b937b7e29669db7a7dff6398fbed0 · linuxkit/kubernetes · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
FROM linuxkit/alpine:f3cd219615428b2bd943411723eb28875275fae7 AS build

# When changing kubernetes_version remember to also update:
# - scripts/mk-image-cache-lst and run `make refresh-image-caches` from top-level
# - pkg/e2e-test/Dockerfile
ENV kubernetes_version v1.10.2
ENV cni_version        v0.7.1
ENV critools_version   v1.0.0-beta.0

RUN apk add -U --no-cache \
  bash \
  coreutils \
  curl \
  findutils \
  git \
  go \
  grep \
  libc-dev \
  linux-headers \
  make \
  rsync \
  && true

ENV GOPATH=/go PATH=$PATH:/go/bin

### Kubernetes (incl Kubelet)

ENV KUBERNETES_URL https://github.com/kubernetes/kubernetes.git
#ENV KUBERNETES_BRANCH pull/NNN/head
ENV KUBERNETES_COMMIT ${kubernetes_version}
RUN mkdir -p $GOPATH/src/github.com/kubernetes && \
    cd $GOPATH/src/github.com/kubernetes && \
    git clone $KUBERNETES_URL kubernetes
WORKDIR $GOPATH/src/github.com/kubernetes/kubernetes
RUN set -e; \
    if [ -n "$KUBERNETES_BRANCH" ] ; then \
        git fetch origin "$KUBERNETES_BRANCH"; \
    fi; \
    git checkout -q $KUBERNETES_COMMIT

RUN make WHAT="cmd/kubelet cmd/kubectl cmd/kubeadm"

### CNI plugins

ENV CNI_URL https://github.com/containernetworking/plugins
#ENV CNI_BRANCH pull/NNN/head
ENV CNI_COMMIT ${cni_version}
RUN mkdir -p $GOPATH/github.com/containernetworking/ && \
    cd $GOPATH/github.com/containernetworking/ && \
    git clone $CNI_URL plugins
WORKDIR $GOPATH/github.com/containernetworking/plugins
RUN set -e;  \
    if [ -n "$CNI_BRANCH" ] ; then \
        git fetch origin "CNI_BRANCH"; \
    fi; \
    git checkout -q $CNI_COMMIT
RUN ./build.sh

### critools

ENV CRITOOLS_URL https://github.com/kubernetes-incubator/cri-tools
#ENV CRITOOLS_BRANCH pull/NNN/head
ENV CRITOOLS_COMMIT ${critools_version}
RUN mkdir -p $GOPATH/github.com/kubernetes-incubator/ && \
    cd $GOPATH/github.com/kubernetes-incubator/ && \
    git clone $CRITOOLS_URL cri-tools
WORKDIR $GOPATH/github.com/kubernetes-incubator/cri-tools
RUN set -e;  \
    if [ -n "$CRITOOLS_BRANCH" ] ; then \
        git fetch origin "CRITOOLS_BRANCH"; \
    fi; \
    git checkout -q $CRITOOLS_COMMIT
RUN make binaries

## Construct final image

RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/
#coreutils needed for du -B for disk image checks made by kubelet
# example: $ du -s -B 1 /var/lib/kubelet/pods/...
#          du: unrecognized option: B
RUN apk add --no-cache --initdb -p /out \
    alpine-baselayout \
    busybox \
    ca-certificates \
    coreutils \
    curl \
    ebtables \
    ethtool \
    findutils \
    iproute2 \
    iptables \
    musl \
    openssl \
    socat \
    util-linux \
    nfs-utils \
    && true

RUN cp $GOPATH/src/github.com/kubernetes/kubernetes/_output/bin/kubelet /out/usr/bin/kubelet
RUN cp $GOPATH/src/github.com/kubernetes/kubernetes/_output/bin/kubeadm /out/usr/bin/kubeadm
RUN cp $GOPATH/src/github.com/kubernetes/kubernetes/_output/bin/kubectl /out/usr/bin/kubectl

RUN tar -czf /out/root/cni.tgz -C $GOPATH/github.com/containernetworking/plugins/bin .

RUN cp $GOPATH/bin/crictl /out/usr/bin/crictl
RUN cp $GOPATH/bin/critest /out/usr/bin/critest

# Remove apk residuals. We have a read-only rootfs, so apk is of no use.
RUN rm -rf /out/etc/apk /out/lib/apk /out/var/cache

ADD kubelet.sh /out/usr/bin/kubelet.sh
ADD kubeadm-init.sh /kubeadm-init.sh
RUN sed -e "s/@KUBERNETES_VERSION@/${kubernetes_version}/g" </kubeadm-init.sh >/out/usr/bin/kubeadm-init.sh && chmod +x /out/usr/bin/kubeadm-init.sh

FROM scratch
WORKDIR /
ENTRYPOINT ["/usr/bin/kubelet.sh"]
COPY --from=build /out /
ENV KUBECONFIG "/etc/kubernetes/admin.conf"