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Added docker buildx support in cico scripts. #109

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Added docker buildx support in cico scripts. #109

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b970b3b
Added buildx support in cico scripts.
prabhav-thali Jun 1, 2020
cf3297a
Used version() to validate docker version
prabhav-thali Jun 5, 2020
f868cfc
sort is used for version check
prabhav-thali Jun 25, 2020
da4897c
Using tagged image for qemu
prabhav-thali Jun 25, 2020
4c02956
Added docs for function
prabhav-thali Jul 15, 2020
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1 change: 1 addition & 0 deletions cico_build_ci.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -22,4 +22,5 @@ export SCRIPT_DIR

load_jenkins_vars
install_deps
check_buildx_support
build_and_push
1 change: 1 addition & 0 deletions cico_build_nightly.sh
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Expand Up @@ -22,5 +22,6 @@ export SCRIPT_DIR

load_jenkins_vars
install_deps
check_buildx_support
set_nightly_tag
build_and_push
1 change: 1 addition & 0 deletions cico_build_release.sh
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Expand Up @@ -22,5 +22,6 @@ export SCRIPT_DIR

load_jenkins_vars
install_deps
check_buildx_support
set_release_tag
build_and_push
50 changes: 39 additions & 11 deletions cico_functions.sh
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Expand Up @@ -33,6 +33,24 @@ function load_jenkins_vars() {
fi
}

function check_buildx_support() {
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docker_version="$(docker --version | cut -d' ' -f3 | tr -cd '0-9.')"
if [[ "$(version "$docker_version")" < "$(version '19.03')" ]]; then
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echo "CICO: Docker $docker_version is too old. Greater than or equal to 19.03 is required."
exit 1
fi

# Kernel
kernel_version="$(uname -r)"
if [[ "$(version "$kernel_version")" < "$(version '4.8')" ]]; then
echo "Kernel $kernel_version too old - need >= 4.8." \
" Install a newer kernel."
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else
echo "kernel $kernel_version has binfmt_misc fix-binary (F) support."
fi

}

function install_deps() {
# We need to disable selinux for now, XXX
/usr/sbin/setenforce 0 || true
Expand All @@ -44,9 +62,22 @@ function install_deps() {
git

service docker start

#set buildx env
export DOCKER_BUILD_KIT=1
export DOCKER_CLI_EXPERIMENTAL=enabled
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I'm a bit iffy about relying on experimental features from Docker but if this is the One True Way to do multiarch builds, then so be it.

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The buildah discussion appears to be here: containers/buildah#1590


#Enable qemu and binfmt support
docker run --rm --privileged docker/binfmt:66f9012c56a8316f9244ffd7622d7c21c1f6f28d
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is this tag expected to be used?

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Yes @ibuziuk The tag is expected to be used. Available tags for the image docker/binfmt can be found [here].(https://hub.docker.com/r/docker/binfmt/tags)
Also, updated the tag to the latest one.

docker run --rm --privileged multiarch/qemu-user-static --reset -p yes

echo 'CICO: Dependencies installed'
}

function version() {
printf '%02d' $(echo "$1" | tr . ' ' | sed -e 's/ 0*/ /g') 2>/dev/null
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Does this code always work like expected?

For me:
$ uname -a
5.5.17-200.fc31.x86_64

result of function:

$ printf '%02d' $(echo "$(uname -r)" | tr . ' ' | sed -e 's/ 0*/ /g') 2>/dev/null
0505170000

Maybe we could simple split by '-':

$ kernel_version=$(uname -r); echo ${kernel_version%%-*}
5.5.17

What do you think?

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We wanted comparison between 2 whole numbers, checking whichever is greater, for this reason we added this check. This code is working as per our expectation. Do you sense any possible issue in this?

Code :-

# Kernel
kernel_version="$(uname -r)"
if [[ "${kernel_version%%-*}" < "4.8" ]]; then
        echo >&2 "Kernel $kernel_version too old - need >= 4.8." \
                " Install a newer kernel."
else
        echo >&2 "kernel $kernel_version has binfmt_misc fix-binary (F) support."
fi

If kernel Version = 3.10.0-1062.el7 (Works as expected)
Condition : 3.10.0 < 4.8
O/P : Kernel 3.10.0-1062.el7 too old - need >= 4.8. Install a newer kernel.

If Kernel Version = 4.15.0-66-generic (Doesn't work as expected)
Condition : 4.15.0 < 4.8
O/P : Kernel 4.15.0-66-generic too old - need >= 4.8. Install a newer kernel.

If kernel Version = 5.5.17-200.fc31 (Works as expected)
Condition : 5.5.17 < 4.8
O/P : kernel 5.5.17-200.fc31.x86_64 has binfmt_misc fix-binary (F) support.

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Thanks, it's make sense.

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@AndrienkoAleksandr Could you please tell me whether you are testing these changes on env similar to ci.centos?

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@nickboldt nickboldt Jun 10, 2020 •
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On F31, I get:

$➔ cat /etc/os-release | grep NAME
NAME=Fedora
VERSION_CODENAME=""
PRETTY_NAME="Fedora 31 (Thirty One)"
CPE_NAME="cpe:/o:fedoraproject:fedora:31"

$➔ kernel_version="$(uname -r)"

$➔ if [[ "${kernel_version%%-*}" < "4.8" ]]; then
>         echo >&2 "Kernel $kernel_version too old - need >= 4.8." \
>                 " Install a newer kernel."
> else
>         echo >&2 "kernel $kernel_version has binfmt_misc fix-binary (F) support."
> fi
kernel 5.6.15-200.fc31.x86_64 has binfmt_misc fix-binary (F) support.

On RHEL7.7:

+ cat /etc/os-release
+ grep NAME
NAME="Red Hat Enterprise Linux Server"
PRETTY_NAME="Red Hat Enterprise Linux Server 7.7 (Maipo)"
CPE_NAME="cpe:/o:redhat:enterprise_linux:7.7:GA:server"
++ uname -r
+ kernel_version=3.10.0-957.el7.x86_64
+ [[ 3.10.0 < 4.8 ]]
+ echo 'Kernel 3.10.0-957.el7.x86_64 too old - need >= 4.8.' ' Install a newer kernel.'
Kernel 3.10.0-957.el7.x86_64 too old - need >= 4.8.  Install a newer kernel.

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@amisevsk amisevsk Jun 22, 2020 •
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I'm also on the side of this being too fragile here. Apparently sort has a flag (-V) for sorting version numbers, so something like

function check_version() {
  local query=$1
  local target=$2
  echo "$target" "$query" | tr ' ' '\n' | sort -V -c 2> /dev/null
}

could work

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@amisevsk Thanks for the suggestion. Implemented version check using sort with -V. Please review.

}

function set_release_tag() {
# Let's obtain the tag based on the
# version defined in the 'VERSION' file
Expand All @@ -66,12 +97,6 @@ function set_git_commit_tag() {
export GIT_COMMIT_TAG
}

function tag_push() {
local TARGET=$1
docker tag "${IMAGE}" "$TARGET"
docker push "$TARGET" | cat
}

function build_and_push() {
REGISTRY="quay.io"
DOCKERFILE="Dockerfile"
Expand All @@ -86,13 +111,16 @@ function build_and_push() {

# Let's build and push image to 'quay.io' using git commit hash as tag first
set_git_commit_tag
docker build -t ${IMAGE} -f ./build/dockerfiles/${DOCKERFILE} . | cat
tag_push "${REGISTRY}/${ORGANIZATION}/${IMAGE}:${GIT_COMMIT_TAG}"
echo "CICO: '${GIT_COMMIT_TAG}' version of images pushed to '${REGISTRY}/${ORGANIZATION}' organization"

# If additional tag is set (e.g. "nightly"), let's tag the image accordingly and also push to 'quay.io'
# Create a new builder instance using buildx
docker buildx create --use --name builder
docker buildx inspect --bootstrap
docker buildx build --platform linux/amd64,linux/s390x -t ${REGISTRY}/${ORGANIZATION}/${IMAGE}:${GIT_COMMIT_TAG} -f ./build/dockerfiles/${DOCKERFILE} --push --progress plain --no-cache .
echo "CICO: '${GIT_COMMIT_TAG}' version of images pushed to '${REGISTRY}/${ORGANIZATION}' organization"

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# If additional tag is set (e.g. "nightly"), let's build the image accordingly and also push to 'quay.io'
if [ -n "${TAG}" ]; then
tag_push "${REGISTRY}/${ORGANIZATION}/${IMAGE}:${TAG}"
docker buildx build --platform linux/amd64,linux/s390x -t ${REGISTRY}/${ORGANIZATION}/${IMAGE}:${TAG} -f ./build/dockerfiles/${DOCKERFILE} --push --progress plain --no-cache .
echo "CICO: '${TAG}' version of images pushed to '${REGISTRY}/${ORGANIZATION}' organization"
fi
}