How to build out docker engine arm binary?

atline · July 12, 2019, 3:43pm

I see this, from here I can download docker daemon & docker client for arm64 version which works.

$ ls | xargs file
containerd:      ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, for GNU/Linux 3.7.0, Go BuildID=qw3vidR0_xw6ad6RsQMc/1Mvy0xkskqC4LJM8ekEq/jvzo407uWVjZxA71fYmB/r1PXwIjd2b3xjPt0tOPD, BuildID[sha1]=f8a87e57a37d283060789f7b6b967f35c30d1385, stripped
containerd-shim: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, Go BuildID=-FbKcwS7GH0h3bDWjYhL/LdkbOXrZDB7bUI5hVare/0n0703v40o5qYAvXmWf7/2_QBPVlcfCHqgmApuCcj, stripped
ctr:             ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, for GNU/Linux 3.7.0, Go BuildID=wcFfUczubU9WzSMgMHbV/9qJT0yqeUUvOvoLwk2rL/UJPlPmjhWvWQSGM0BjUq/nz-x_U4rhoAErNC5UKvE, BuildID[sha1]=e7fe6b82894b6bf6c70a2427481f879a5c342cbd, stripped
docker:          ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, Go BuildID=kGbyf6df_lIBsP2zN-aw/mSkNZi8-n573BH3qCxiL/S_qDX39Bbfl6h9BHKaHC/quZgsL-4q_5_Xu6VnCVI, not stripped
dockerd:         ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, for GNU/Linux 3.7.0, Go BuildID=W3bAmk2RFppITPWcS_4m/ODbBAFymPAKdThBEapBo/FEH4KbWqvMFNQhWUKSp1/QA_f4aqjz6iKiFCV3joT, BuildID[sha1]=96792f1bae1750c4b9fc949c8988694b7378b80e, with debug_info, not stripped
docker-init:     ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, for GNU/Linux 3.7.0, BuildID[sha1]=dd417538230515ff4846537c0332512632db5bd2, stripped
docker-proxy:    ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, Go BuildID=e1uObKFCO2MCzLXoZ4ij/IWuhN_VlndZn0XCvmPYQ/SqEk5FGxOKYjp8b-3-WP/Y_RNFD3JSDFXbk_neaAl, with debug_info, not stripped
runc:            ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, for GNU/Linux 3.7.0, Go BuildID=QhVg0N-9Q2OEb5Lj-BN1/HxEuk0yZiGKQguwkToc9/EBT3VcPRTQwVA_0eTS1l/sXiMljveurc6-0yOOwdh, BuildID[sha1]=209a7edb91edbd565b7f90f0c57bc11ba29ea9a9, with debug_info, not stripped

Then, I want to know how above binary comes out, I see this, it’s a good article which I successfully build out binary for x86-64 with make static DOCKER_BUILD_PKGS=static-linux with the source here

But, I need arm version, so I tried next 2 methods:

make static DOCKER_BUILD_PKGS="static-linux cross-arm"
GOOS=linux GOARCH=arm64 make static DOCKER_BUILD_PKGS=static-linux

Above 2 methods both work to build out docker client with arm version, but the docker daemon still x86-64 version, see next:

orange@orange:~/docker-ce/components/packaging/static/build/linux/docker$ ls | xargs file
containerd:      ELF 64-bit LSB executable, x86-64, version 1 (GNU/Linux), statically linked, for GNU/Linux 2.6.32, BuildID[sha1]=b3373a479eb94f19270cd9db5b27c149dfc58b9c, stripped
containerd-shim: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, stripped
ctr:             ELF 64-bit LSB executable, x86-64, version 1 (GNU/Linux), statically linked, for GNU/Linux 2.6.32, BuildID[sha1]=78dba144a5f3d9c4f1d6588e4d96b8dc84531860, stripped
docker:          ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, not stripped
dockerd:         ELF 64-bit LSB executable, x86-64, version 1 (GNU/Linux), statically linked, for GNU/Linux 2.6.32, BuildID[sha1]=bc15506d7c7e9cf25a854ef6296940821769949a, not stripped
docker-init:     ELF 64-bit LSB executable, x86-64, version 1 (GNU/Linux), statically linked, for GNU/Linux 2.6.32, BuildID[sha1]=935ade6a155bf37269208cfb807f9d6653f34020, stripped
docker-proxy:    ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, not stripped
runc:            ELF 64-bit LSB executable, x86-64, version 1 (GNU/Linux), statically linked, for GNU/Linux 2.6.32, BuildID[sha1]=14523b67ee2ca600894e06729f8606f5a7d0e227, not stripped

So, what I am doing wrong, how could I get arm version for dockerd?

meyay · July 12, 2019, 4:28pm

You might want to check:

github.com

docker/docker-ce/blob/b72034c0ef599b23334fdbb0f8d783139476e3bb/components/engine/project/PACKAGERS.md#cross-compilation

# Dear Packager,

If you are looking to make Docker available on your favorite software
distribution, this document is for you. It summarizes the requirements for
building and running the Docker client and the Docker daemon.

## Getting Started

We want to help you package Docker successfully. Before doing any packaging, a
good first step is to introduce yourself on the [docker-dev mailing
list](https://groups.google.com/d/forum/docker-dev), explain what you're trying
to achieve, and tell us how we can help. Don't worry, we don't bite! There might
even be someone already working on packaging for the same distro!

You can also join the IRC channel - #docker and #docker-dev on Freenode are both
active and friendly.

We like to refer to Tianon ("@tianon" on GitHub and "tianon" on IRC) as our
"Packagers Relations", since he's always working to make sure our packagers have
a good, healthy upstream to work with (both in our communication and in our

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atline · July 14, 2019, 12:10pm

Hi, meyay,

Thanks for reply, I followd your shared link & use make DOCKER_CROSSPLATFORMS=linux/arm/v7 cross to build.

Finally I got next:

orange@orange:~/docker/bundles/cross/linux/arm/v7$ ls | xargs file
dockerd:            symbolic link to dockerd-dev
dockerd-dev:        ELF 32-bit LSB executable, ARM, EABI5 version 1 (GNU/Linux), statically 
linked, for GNU/Linux 3.2.0, 
BuildID[sha1]=8c2ec4d261986cee4657dabe773aeca0b32056e3, not stripped
dockerd-dev.md5:    ASCII text
dockerd-dev.sha256: ASCII text

You can see I can just get dockerd arm version, where is other binary like containerd, ctr, docker, docker-init, docker-proxy, runc?

But in x64 linux pc version, I can see next, all binary pc version there, what happened for arm version? I just wonder how docker official manage https://download.docker.com/linux/static/stable/aarch64/ ?

orange@orange:~/docker/bundles/binary-daemon$ ls
containerd              ctr              dockerd-dev.sha256          docker-init.sha256        rootlesskit-docker-proxy.md5     runc.sha256
containerd.md5          ctr.md5          dockerd-rootless.sh         docker-proxy              rootlesskit-docker-proxy.sha256  vpnkit
containerd.sha256       ctr.sha256       dockerd-rootless.sh.md5     docker-proxy.md5          rootlesskit.md5                  vpnkit.md5
containerd-shim         dockerd          dockerd-rootless.sh.sha256  docker-proxy.sha256       rootlesskit.sha256               vpnkit.sha256
containerd-shim.md5     dockerd-dev      docker-init                 rootlesskit               runc
containerd-shim.sha256  dockerd-dev.md5  docker-init.md5             rootlesskit-docker-proxy  runc.md5