Create multi-stage, multi-arch Go container images for your heterogeneous Kubernetes clusters

In this talk, Peter will talk about how Docker was extended from x86 Linux to the ARM platforms for your Go applications. They will cover the work and architecture that makes it possible to run Golang with Docker on different CPU architectures. Peter will also demo some of the new features of the current Docker CE engine to manage Kubernetes Clusters with both x86 and Raspberry PI Linux nodes.

Building multi-arch container images with Docker is a very special build process.

​
How you can use your locale developer environment to build images for a hybride Kubernetes Cluster?

- What it means for a Docker image to be build multi-arch?
- How are multi-arch images push to a registry and maintained?
- How does Docker correctly deploy and schedule go applications on heterogeneous Kubernetes or Docker swarm cluster?
-How you can run and tests those hybride go applications?

* https://www.godays.io/program

Transcript

1. Copyright 2019 bee42 solutions gmbh @PRossbach
   rethink IT - We improve your systems with passion
   1
   Create multi-stage,
   multi-arch Go container images
   for your heterogeneous
   Kubernetes clusters
   

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2. Copyright 2019 bee42 solutions gmbh @PRossbach
   rethink IT - We improve your systems with passion
   Golang
   2
   Simple and helpful…
   Go was designed at Google
   ]
   by Robert
   Griesemer, Rob Pike, and Ken
   Thompson in 2007 to improve
   programming productivity in an era of
   multicore, networked machines and
   extremely large codebases.
   Container technologies like Docker and Kubernetes
   powered by golang
   

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3. Copyright 2019 bee42 solutions gmbh @PRossbach
   rethink IT - We improve your systems with passion
   Why build GO apps 

   with containers?
   3
   •Use or implement OpenSource projects that written in Go
   •Ship your apps with container is state of the art
   •Build software for different environments (OS, CPU, …)
   •Use multiple golang version in parallel
   •Solve your golang dependency problems
   •Reduce your size of your app shipments for better scale
   

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4. Copyright 2019 bee42 solutions gmbh @PRossbach
   rethink IT - We improve your systems with passion
   What’s the problem?
   4
   •compiling is slow
   What we need?
   •Speed up compiling
   •Reduce size
   •Multi Arch
   •Pipeline Builds
   •Running at Kubernetes
   

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5. Copyright 2019 bee42 solutions gmbh @PRossbach
   rethink IT - We improve your systems with passion
   Native build
   5
   FROM golang:1.11
   RUN go get github.com/golang/dep/cmd/dep
   WORKDIR /go/src/github.com/bee42/whoamI
   ADD . .
   # Download deps
   RUN dep ensure
   # Install
   RUN go install github.com/bee42/whoamI
   ENTRYPOINT /go/bin/whoamI
   >50 sec
   

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6. Copyright 2019 bee42 solutions gmbh @PRossbach
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   With cached deps
   6
   FROM golang:1.11
   RUN go get github.com/golang/dep/cmd/dep
   WORKDIR /go/src/github.com/bee42/whomaI
   # Download deps
   ADD Gopkg.* ./
   RUN dep ensure --vendor-only
   # Install source
   ADD . .
   RUN go install github.com/bee42/whomaI
   # Keep the container open
   ENTRYPOINT tail -f /dev/null
   24 secs
   

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7. Copyright 2019 bee42 solutions gmbh @PRossbach
   rethink IT - We improve your systems with passion
   With cached obj - I
   7
   # Start builder
   ARG baseImage="golang:1.11"
   FROM ${baseImage} as builder
   RUN go get github.com/golang/dep/cmd/dep
   WORKDIR /go/src/github.com/bee42/whoamI
   # Download deps
   ADD Gopkg.* ./
   RUN dep ensure --vendor-only
   # Install source
   ADD . .
   RUN go install github.com/bee42/whoamI
   # Done builder

   …
   24 secs
   

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8. Copyright 2019 bee42 solutions gmbh @PRossbach
   rethink IT - We improve your systems with passion
   With cached obj - II
   8
   # Start builder
   ARG baseImage="golang:1.11"
   FROM ${baseImage} as builder
   …
   # Start obj-cache
   FROM golang:1.11 as obj-cache
   COPY --from=builder /root/.cache /root/.cache
   # Done obj-cache
   # Start main
   FROM builder
   ENTRYPOINT /go/bin/whoamI
   # Done main
   

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9. Copyright 2019 bee42 solutions gmbh @PRossbach
   rethink IT - We improve your systems with passion
   Use cached obj
   9
   cacheobjs-base:
   if [ "$(shell docker images bee42/whoamI/cacheobjs-base -q)" = "" ]; then \
   docker build -t bee42/whoamI/cacheobjs-base -f Dockerfile.cacheobjs --target=obj-cache .; \
   fi;
   cacheobjs: cacheobjs-base
   docker build --build-arg baseImage=bee42/whoamI/cacheobjs-base \
   -t bee42/whoamI/cacheobjs \
   -f Dockerfile.cacheobjs .
   docker run --rm -it bee42/whoamI/cacheobjs
   8 secs
   

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10. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Taily Build
    10
    FROM golang:1.11
    RUN go get github.com/golang/dep/cmd/dep
    WORKDIR /go/src/github.com/bee42/whoamI
    # Download deps
    ADD Gopkg.* ./
    RUN dep ensure --vendor-only
    # Install source
    ADD . .
    RUN go install github.com/bee42/whoamI
    # Keep the container open
    ENTRYPOINT tail -f /dev/null
    

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11. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Use taily build
    11
    tailybuild-base:
    if [ "$(shell docker ps --filter=name=tailybuild -q)" = "" ]; then \
    docker build -t bee42/whomaI/tailybuild-base -f Dockerfile.tailybuild .; \
    docker run --name tailybuild -d bee42/whoami/tailybuild-base; \
    fi;
    tailybuild: tailybuild-base
    docker exec -it tailybuild rm -fR whoamI
    docker cp cmd tailybuild:/go/src/github.com/bee42/whoamI/
    docker exec -it tailybuild go install github.com/bee42/whoamI
    docker exec -it tailybuild /go/bin/whomaI
    3 secs
    

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12. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Taily Mount
    12
    FROM golang:1.11
    RUN go get github.com/golang/dep/cmd/dep
    WORKDIR /go/src/github.com/bee42/whoamI
    # Download deps
    ADD Gopkg.* ./
    RUN dep ensure --vendor-only
    # Install source
    ADD . .
    RUN go install github.com/bee42/whoamI
    # Keep the container open
    ENTRYPOINT tail -f /dev/null
    

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13. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Use taily mount
    13
    tailymount-base:
    if [ "$(shell docker ps --filter=name=tailymount -q)" = "" ]; then \
    docker build -t bee42/whoamI/tailymount-base -f Dockerfile.tailymount .; \
    docker run --mount type=bind,source=$(shell pwd)/cmd,target=/go/src/github.com/bee42/whoamI \
    --name tailymount -d bee42/whoamI/tailymount-base; \
    fi;
    tailymount: tailymount-base
    docker exec -it tailymount go install github.com/bee42/whoamI
    docker exec -it tailymount /go/bin/whoamI
    2.4 secs
    

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14. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Yeah > Save life time…
    14
    • https://medium.com/windmill-engineering/tips-tricks-for-making-your-golang-container-builds-10x-faster-4cc618a43827
    

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15. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Reduce Size
    15
    •Prepare a Tool Container
    •Multi Stage Build
    •Compression
    •Improve quality
    

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16. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Choose the right base images
    16
    https://www.codacy.com/blog/five-ways-to-slim-your-docker-images/
    

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17. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Strategies to reduce image size
    17
    •Think Carefully About Your Application’s Needs
    •Use a Small Base Image
    •Use as Few Layers As Possible
    •Use .dockerignore files
    •Squash Docker Images
    

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18. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    go dep tool base container
    18
    ARG BASE_IMAGE=${BASE_IMAGE:-golang:1.11.5-alpine3.8}
    FROM ${BASE_IMAGE}
    LABEL maintainer="Peter Rossbach "
    ARG DEP_VERSION=${DEP_VERSION:-0.5.0}
    RUN apk update; \
    apk add --no-cache \
    ca-certificates \
    curl \
    git \
    make \
    openssl; \
    curl -L -s https://github.com/golang/dep/releases/download/v${DEP_VERSION}/dep-linux-amd64 \
    -o /bin/dep; \
    chmod +x /bin/dep; \
    rm -rf /var/cache/apk/*; \
    rm -rf /tmp/*;
    

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19. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Builder Image
    19
    FROM bee42.com/containers/tools/go-dep:1.11.5-alpine3.8 as builder
    ARG TARGET_ARCH=${TARGET_ARCH:-amd64}
    ARG APP=${APP:-bee42.com/containers/examples/k8s-client/blinkt}
    ENV CGO_ENABLED=0
    ENV APP_GOPATH $GOPATH/src/$APP
    WORKDIR $APP_GOPATH
    RUN mkdir -p $APP_GOPATH
    COPY vendor/ $APP_GOPATH/vendor/
    COPY Gopkg.* $APP_GOPATH/
    COPY *.go $APP_GOPATH
    RUN cd $APP_GOPATH && \
    GOOS=linux GOARCH=${TARGET_ARCH} GOARM=${GOARM:-7} go build -a --installsuffix cgo --
    ldflags="-s" -o blinkt
    # Resulting App
    …
    

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20. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Resulting Image
    20
    FROM bee42.com/containers/tools/go-dep:1.11.5-alpine3.8 as builder
    …
    # Resulting App
    FROM alpine:v3.8
    COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
    COPY --from=builder /app/blinkt /app/blinkt
    WORKDIR /app
    ENTRYPOINT ["/app/blinkt"]
    

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21. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    UPX
    21
    https://upx.github.io
    UPX achieves an excellent compression ratio and offers very fast decompression.
    

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22. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    UPX Package Compression
    22
    # Optimize binary size
    FROM alpine:v3.8 as packager
    ARG APP=${APP:-bee42.com/containers/examples/k8s-client/blinkt}
    ENV APP_GOPATH /go/src/$APP
    ARG TARGET_ARCH=${TARGET_ARCH:-amd64}
    ARG UPX_VERSION=${UPX_VERSION:-3.95}
    RUN apk add --no-cache xz binutils curl && echo ${TARGET_ARCH}
    RUN curl -sL -o /tmp/upx-${UPX_VERSION}-${TARGET_ARCH}_linux.tar.xz \
    https://github.com/upx/upx/releases/download/v${UPX_VERSION}/upx-${UPX_VERSION}-$
    {TARGET_ARCH}_linux.tar.xz && \
    xz -d -c /tmp/upx-${UPX_VERSION}-${TARGET_ARCH}_linux.tar.xz | \
    tar -xOf - upx-${UPX_VERSION}-${TARGET_ARCH}_linux/upx > /bin/upx && \
    chmod a+x /bin/upx && \
    rm /tmp/upx-${UPX_VERSION}-${TARGET_ARCH}_linux.tar.xz
    COPY --from=builder $APP_GOPATH/blinkt /app/blinkt
    RUN cd /app && \
    strip --strip-unneeded blinkt && \
    upx blinkt
    # Resulting App
    

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23. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Use Upx package compression
    23
    # Optimize binary size
    FROM alpine:v3.8 as packager
    …
    # Resulting App
    FROM alpine:v3.8
    COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
    COPY --from=packager /app/blinkt /app/blinkt
    WORKDIR /app
    ENTRYPOINT ["/app/blinkt"]
    Safe 20-40% image size
    

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24. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    24
    Build Cross Compiled Binaries: 

    qemu static
    docker run --rm --privileged multiarch/qemu-user-static:register --reset
    https://hub.docker.com/r/multiarch/qemu-user-static
    for target_arch in aarch64 arm x86_64; do
    wget -N https://github.com/multiarch/qemu-user-static/releases/download/v2.9.1-1/x86_64_qemu-$
    {target_arch}-static.tar.gz
    tar -xvf x86_64_qemu-${target_arch}-static.tar.gz
    done
    https://lobradov.github.io/Building-docker-multiarch-images/
    Registry kernel modules
    Build with emulation binary
    

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25. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Multiarch Docker hub
    25
    https://hub.docker.com/u/multiarch/
    https://github.com/multiarch
    

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26. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Multi Arch build matrix
    26
    https://doi-janky.infosiftr.net/job/multiarch/job/arm32v7/job/httpd/
    

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27. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Build with separate Dockerfiles
    27
    cat >Dockerfile.amd64 <FROM amd64/alpine:3.7
    # Not necessary for the arch where host and target are the same
    # COPY qemu-x86_64-static /usr/bin/
    RUN apk --no-cache --update add nginx
    EXPOSE 80
    CMD ["nginx", "-g", "daemon off;"]
    EOF

    

    cat >Dockerfile.arm32v6 <FROM arm32v6/alpine:3.7
    COPY qemu-arm-static /usr/bin/
    RUN apk --no-cache --update add nginx
    EXPOSE 80
    CMD ["nginx", "-g", "daemon off;“]
    EOF
    

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28. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Resulting Image
    28
    for arch in amd64 arm32v6; do
    docker build -f Dockerfile.${arch} -t bee42/nginx:${arch}-latest .
    docker push bee42/nginx:${arch}-latest
    done
    

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29. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Builder Image with Args
    29
    ARG GOLANG_TARGET=${GOLANG_TARGET:-bee42.com/containers/tools/go-dep:1.11.5-alpine3.8}
    ARG TARGET=${TARGET:-multiarch/alpine:armhf-v3.8}
    FROM ${GOLANG_TARGET} as builder
    ARG TARGET_ARCH=${TARGET_ARCH:-arm}
    ARG APP=${APP:-bee42.com/containers/examples/k8s-client/blinkt}
    ENV CGO_ENABLED=0
    ENV APP_GOPATH $GOPATH/src/$APP
    WORKDIR $APP_GOPATH
    RUN mkdir -p $APP_GOPATH
    COPY vendor/ $APP_GOPATH/vendor/
    COPY Gopkg.* $APP_GOPATH/
    COPY *.go $APP_GOPATH
    RUN cd $APP_GOPATH && \
    GOOS=linux GOARCH=${TARGET_ARCH} GOARM=${GOARM:-7} go build -a --installsuffix cgo --
    ldflags="-s" -o blinkt
    # Resulting App
    …
    

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30. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Resulting Image
    30
    ARG GOLANG_TARGET=${GOLANG_TARGET:-bee42.com/containers/tools/go-dep:1.11.5-alpine3.8}
    ARG TARGET=${TARGET:-multiarch/alpine:armhf-v3.8}
    FROM ${GOLANG_TARGET} as builder
    …
    # Resulting App
    FROM ${TARGET}
    COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
    COPY --from=buillder /app/blinkt /app/blinkt
    WORKDIR /app
    ENTRYPOINT ["/app/blinkt"]
    

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31. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Build with Multi Arch Images
    31
    build:
    case $${arch} in \
    amd64 ) target_image="multiarch/alpine:amd64-v3.8" ;; \
    arm ) target_image="multiarch/alpine:armhf-v3.8" ;; \
    arm64 ) target_image="multiarch/alpine:arm64-v3.8" ;; \
    esac ; \
    docker image build --no-cache \
    --build-arg TARGET=$${target_image} \
    --build-arg TARGET_ARCH=$${arch} \
    -t $(DOCKER_IMAGE):$(DOCKER_TAG)-$${arch} . ; \
    

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32. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Build with Mutli Arch Images
    32
    build-multiarch:
    @for arch in $(MULTIARCH); do \
    case $${arch} in \
    amd64 ) target_image="multiarch/alpine:amd64-v3.8" ;; \
    arm ) target_image="multiarch/alpine:armhf-v3.8" ;; \
    arm64 ) target_image="multiarch/alpine:arm64-v3.8" ;; \
    esac ; \
    docker image build --no-cache \
    --build-arg TARGET=$${target_image} \
    --build-arg TARGET_ARCH=$${arch} \
    --build-arg VERSION=`cat VERSION` \
    --build-arg VCS_REF=$(DOCKER_TAG) \
    --build-arg BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"` \
    -t $(DOCKER_IMAGE):$(DOCKER_TAG)-$${arch} . ; \
    done
    

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33. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    33
    

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34. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Create Multiarch Manifest
    34
    push-multiarch:
    @echo "Create and push multiarch manifest: "
    @for arch in $(MULTIARCH); do \
    docker image push $(DOCKER_IMAGE):$(DOCKER_TAG)-$${arch} ; \
    done
    @docker manifest create $(DOCKER_IMAGE):$(MANIFEST_TAG) \
    $(DOCKER_IMAGE):$(DOCKER_TAG)-amd64 \
    $(DOCKER_IMAGE):$(DOCKER_TAG)-arm \
    $(DOCKER_IMAGE):$(DOCKER_TAG)-arm64
    @for arch in $(MULTIARCH); do \
    case $${arch} in \
    amd64 ) manifest_annotate="" ;; \
    arm ) manifest_annotate="--os linux --arch arm" ;; \
    arm64 ) manifest_annotate="--os linux --arch arm64 --variant armv8" ;; \
    esac ; \
    docker manifest annotate $(DOCKER_IMAGE):$(MANIFEST_TAG) $(DOCKER_IMAGE):$(DOCKER_TAG)-
    $${arch} $${manifest_annotate} ;\
    done
    @docker manifest push $(DOCKER_IMAGE):$(MANIFEST_TAG)
    

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35. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Docker 18.09 

    client experimental feature
    35
    mkdir -p ~/.docker
    cat > "$HOME/.docker/config.json" <{
    "experimental": "enabled"
    }
    EOF
    https://docs.docker.com/engine/reference/commandline/manifest/
    https://docs.docker.com/registry/spec/manifest-v2-2/
    

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36. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Add Metadata
    36
    # Metadata
    ARG VCS_REF
    ARG BUILD_DATE
    ARG VERSION
    # Metadata
    LABEL maintainer="bee42 cloud native crew " \
    org.opencontainers.image.title="blinkt" \
    org.opencontainers.image.version="${VERSION}" \
    org.opencontainers.image.revision="${VCS_REF}" \
    org.opencontainers.image.created="${BUILD_DATE}" \
    org.opencontainers.image.url="https://r-gitlab.bee42.com/containers/examples/k8s-client/blinkt/" \
    org.opencontainers.image.source="https://gitlab.bee42.com/containers/examples/k8s-client/blinkt/" \
    org.opencontainers.image.authors="bee42 cloud native crew " \
    org.opencontainers.image.vendor="bee42 solutions gmbh" \
    org.opencontainers.image.licenses="Apache-2.0" \
    com.bee42.image.type="service-stateless" \
    https://github.com/opencontainers/image-spec/blob/master/annotations.md
    

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37. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    37
    

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38. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    38
    • Kubernetes is a container orchestrator.
    • It’s how to run containers at scale.
    • It’s a very active open-source platform with lots of
    contributors, start at 6. June 2014
    • Originally developed by Google and 

    donated to Cloud Native Computing Foundation
    

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39. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    39
    

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40. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    40
    

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41. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    41
    

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42. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    42
    https://github.com/bee42/kubernetes-on-embedded
    https://blog.hypriot.com/post/setup-kubernetes-raspberry-pi-cluster/
    Blinkt - Demo
    https://github.com/apprenda/blinkt-k8s-controller
    https://github.com/StefanScherer/swarm-monitor
    

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43. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    43
    Your Mac Ethernet Switch
    bee42-crew—
    03-001
    bee42-
    crew-03-002
    bee42-
    crew-03-003
    Edge Max
    DNS
    192.168.42.31
    192.168.42.32
    192.168.42.33
    192.168.42.101 192.168.42.1
    Master
    Nodes
    Raspberry PI 3+
    armv7
    bee42-crew—
    03-004
    192.168.42.34
    Nodes
    Raspberry PI 3+
    arm64 bee42-crew—
    03-005
    192.168.42.35
    Nodes
    UP Board
    amd64
    192.168.1.230
    

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44. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Kubernetes Deploy Blinkt
    44
    

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45. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Facts of the multistage 

    and multi arch adventure
    45
    • Speed up with golang inside container is possible.
    • Caching the dependencies
    • Use compiling inside run container
    • Reduce of images size with multistage build (copy resulting binary)
    • Reduce size with UPX
    • Copy Binary
    • Multi Arch image building
    • Use qemu-user-static at intel
    • Sometimes you need native builder instances
    • Create image manifests to use same image reference inside your deployment resources
    • Add metadata to your images
    • Setup and maintain a heterogeneous machine cluster is hard.
    • Compiling your own kernel
    • Manuell setup of machines
    • Wait for features
    

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46. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    rethink IT
    Build herogenous kubernetes
    cluster with embedded
    machines is a funny adventure…
    46
    

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47. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Kubernetes poster
    pre registration started
    
    https://tinyurl.com/y9js3p7w
    47
    delivery starts at 42ten day of the year 2019
    PREVIEW
    PREVIEW
    WE
    

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48. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    Cloud Native System Architect
    &
    bee42 founder
    Peter Roßbach
    
    @PRossbach
    
    peter.rossbach@bee42.com
    
    https://bee42.com
    
    https://devops-gathering.io
    
    48
    Save the date…
    #DOG19 11.-13. March 2019 at Bochum
    

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49. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    bee42 Trainings
    49
    https://bee42.com/de/trainings
    

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50. Copyright 2019 bee42 solutions gmbh @PRossbach
    rethink IT - We improve your systems with passion
    50
    We hiring :-)
    

    https://bit.ly/2K8DtRu 

    jobs@bee42.com

    @bee42solutions
    

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