Dockerfile for kops

This commit is contained in:
Dennis Webb 2017-01-31 09:04:15 -06:00
parent 372718b354
commit af43bdfaca
3 changed files with 118 additions and 0 deletions

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# Copyright 2017 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
FROM alpine:3.5
ARG GO_VERSION=1.8.1
# KOPS_GITISH: Modify to build at an explicit tag/gitish
ARG KOPS_GITISH=release
# KUBECTL_SOURCE: Change to kubernetes-dev/ci for CI
ARG KUBECTL_SOURCE=kubernetes-release/release
# KUBECTL_TRACK: Currently latest from KUBECTL_SOURCE. Change to latest-1.3.txt, etc. if desired.
ARG KUBECTL_TRACK=stable.txt
ARG KUBECTL_ARCH=linux/amd64
RUN set -ex && \
apk add --no-cache --virtual build-dependencies curl jq git bash gcc musl-dev openssl go make && \
apk add --no-cache vim ca-certificates &&\
\
export GOROOT_BOOTSTRAP="$(go env GOROOT)" && \
curl -L https://golang.org/dl/go${GO_VERSION}.src.tar.gz | tar zx -C /usr/local && \
cd /usr/local/go/src && \
./make.bash && \
mkdir -p /go && \
export GOPATH=/go && \
\
go get -d k8s.io/kops && \
cd ${GOPATH}/src/k8s.io/kops/ && \
git checkout ${KOPS_GITISH} && \
make SHASUMCMD=0 && \
mv ${GOPATH}/bin/kops /usr/bin/. && \
\
KUBECTL_VERSION=$(curl -SsL --retry 5 "https://storage.googleapis.com/${KUBECTL_SOURCE}/${KUBECTL_TRACK}") && \
curl -SsL --retry 5 "https://storage.googleapis.com/${KUBECTL_SOURCE}/${KUBECTL_VERSION}/bin/${KUBECTL_ARCH}/kubectl" > /usr/bin/kubectl && \
chmod +x /usr/bin/kubectl &&\
\
rm -rf /go /usr/local/go && \
apk del build-dependencies && \
rm -rf /var/cache/apk/* && \
\
echo "=== Built kops at ${KOPS_GITISH}, fetched kubectl ${KUBECTL_VERSION} ==="
ENTRYPOINT ["/usr/bin/kops"]

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# Copyright 2017 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
FROM alpine:3.5
# KUBECTL_SOURCE: Change to kubernetes-dev/ci for CI
ARG KUBECTL_SOURCE=kubernetes-release/release
# KUBECTL_TRACK: Currently latest from KUBECTL_SOURCE. Change to latest-1.3.txt, etc. if desired.
ARG KUBECTL_TRACK=stable.txt
ARG KUBECTL_ARCH=linux/amd64
RUN apk add --no-cache --update ca-certificates vim curl jq && \
KOPS_URL=$(curl -s https://api.github.com/repos/kubernetes/kops/releases/latest | jq -r ".assets[] | select(.name == \"kops-linux-amd64\") | .browser_download_url") && \
curl -SsL --retry 5 "${KOPS_URL}" > /usr/local/bin/kops && \
chmod +x /usr/local/bin/kops && \
KUBECTL_VERSION=$(curl -SsL --retry 5 "https://storage.googleapis.com/${KUBECTL_SOURCE}/${KUBECTL_TRACK}") && \
curl -SsL --retry 5 "https://storage.googleapis.com/${KUBECTL_SOURCE}/${KUBECTL_VERSION}/bin/${KUBECTL_ARCH}/kubectl" > /usr/local/bin/kubectl && \
chmod +x /usr/local/bin/kubectl &&\
apk del curl jq
ENTRYPOINT ["/usr/local/bin/kops"]

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# Running Kops in Docker
The Dockerfile here is offered primarily as a way to build continuous
integration versions of `kops` until we figure out how we want to
release/package it.
To use it, e.g. (assumes your `$HOME` is correct and that `$KOPS_STATE_STORE` is correct):
```shell
$ docker build -t kops .
$ KOPS="docker run -v $HOME/.aws:/root/.aws:ro -v $HOME/.ssh:/root/.ssh:ro -v $HOME/.kube:/root/.kube -it kops --state=$KOPS_STATE_STORE"
```
This creates a shell variable that runs the `kops` container with `~/.aws` mounted in (for AWS credentials), `~/.ssh` mounted in (for SSH keys, for AWS specifically), and `~/.kube` mounted in (so `kubectl` can add newly created clusters).
After this, you can just use `$KOPS` where you would generally use `kops`, e.g. `$KOPS get cluster`.
#### Choose branch/release to build.
By default, the current release branch is built. To build using a specific tag or commit, add the flag `--build-arg KOPS_GITISH=<tag/branch/sha>` to `docker build`, e.g. `docker build --build-arg KOPS_GITISH=release-1.6 -t kops .`
#### Light Version
The light version downloads the latest release binaries of kops from [Github Releases](https://github.com/kubernetes/kops/releases).
To build the lighter version:
```shell
$ docker build -t kops:light -f Dockerfile-light .
$ KOPS="docker run -v $HOME/.aws:/root/.aws:ro -v $HOME/.ssh:/root/.ssh:ro -v $HOME/.kube:/root/.kube -it kops:light --state=$KOPS_STATE_STORE"
```