Kolla Multinode Local Registry Setup

kolla-multinode-local-registry-setup.md

Kolla Multinode Local Registry Setup

Deploy node setup

install and configure docker

curl -sSL https://get.docker.io | bash
mkdir -p /etc/systemd/system/docker.service.d
tee /etc/systemd/system/docker.service.d/kolla.conf <<-'EOF'
[Service]
MountFlags=shared
EOF
systemctl daemon-reload
systemctl restart docker

start local registry

docker run -d -p 4000:5000 --restart=always --name registry registry:2

install kolla and pull image from docker hub

yum install -y epel-release
yum install -y python-pip
yum install -y vim wget
pip install -U pip

yum install -y ansible
pip install kolla
cp -r /usr/share/kolla/etc_examples/kolla /etc/

kolla-ansible pull

push kolla images to local registry

# push all image to local registry, e.g.:
#     docker tag kolla/centos-binary-heat-api:3.0.1 \
#         localhost:4000/kolla/centos-binary-heat-api:3.0.1
#     docker push localhost:4000/kolla/centos-binary-heat-api:3.0.1
docker images | grep kolla | grep -v local | awk '{print $1,$2}' | while read -r image tag; do
    docker tag ${image}:${tag} localhost:4000/${image}:${tag}
    docker push localhost:4000/${image}:${tag}
done

Target nodes setup

install and configure docker

curl -sSL https://get.docker.io | bash
echo 'INSECURE_REGISTRY="--insecure-registry 192.168.122.71:4000"' > /etc/sysconfig/docker

tee /etc/systemd/system/docker.service <<-'EOF'
# CentOS
[Service]
MountFlags=shared
EnvironmentFile=/etc/sysconfig/docker
ExecStart=/usr/bin/docker daemon $INSECURE_REGISTRY
EOF

systemctl daemon-reload
systemctl restart docker

try to pull a kolla image from local registry

docker pull kolla/centos-binary-kolla-toolbox:3.0.1

list local images

docker images

Reference

• http://docs.openstack.org/developer/kolla/newton/quickstart.html
• http://docs.openstack.org/developer/kolla/newton/multinode.html
• https://docs.docker.com/registry

Hi
If you reading this you probably in weird situation with images from quay.io like me. So use this one:

docker images | grep kolla | grep -v local | awk '{print $1,$2}' | while read -r image tag; do
    new_image_name=${image#"quay.io/"}
    docker tag ${image}:${tag} "localhost:4000"/${new_image_name}:${tag}
    docker push localhost:4000/${new_image_name}:${tag}
done

i setup my local machine (which is not part of the cluster and can reach the external network) as kolla host and used kolla-ansible pull to get the images ... then the above snippets to push it to my local docker registry 👍

What are the advantage of maintaining local copy of registry? Just to save cost of bandwidth or are there any bigger advantage here?