google gcr.io、k8s.gcr.io 國內鏡像

1、首先添加docker官方的國內鏡像

sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://registry.docker-cn.co"]
}
EOF
2、gcr.io鏡像

根據開源項目：

https://github.com/anjia0532/gcr.io_mirror

作者將gcr.io相關鏡像pull下來，然後push到docker官方倉庫，相關轉換語法如下：

語法

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gcr.io/namespace/image_name:image_tag

等價於

anjia0532/namespace.image_name:image_tag

特別的

k8s.gcr.io/{image}/{tag} <==> gcr.io/google-containers/{image}/{tag} <==> anjia0532/google-containers.{image}/{tag}
批量轉換

replace gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1 to real image

this will convert gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1

to anjia0532/google-containers.federation-controller-manager-arm64:v1.3.1-beta.1 and pull it

k8s.gcr.io/{image}/{tag} <==> gcr.io/google-containers/{image}/{tag} <==> anjia0532/google-containers.{image}/{tag}

images=$(cat img.txt)
#or
#images=$(cat <<EOF

gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1

gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1

gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1

#EOF
#)
eval $(echo ${images}|
sed 's/k8s.gcr.io/anjia0532/google-containers/g;s/gcr.io/anjia0532/g;s///./g;s/ /
/g;s/anjia0532./anjia0532//g' |
uniq |
awk '{print "docker pull "$1";"}'
)

this code will retag all of anjia0532's image from local e.g. anjia0532/google-containers.federation-controller-manager-arm64:v1.3.1-beta.1

to gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1

k8s.gcr.io/{image}/{tag} <==> gcr.io/google-containers/{image}/{tag} <==> anjia0532/google-containers.{image}/{tag}

for img in $(docker images --format "{{.Repository}}:{{.Tag}}"| grep "anjia0532"); do
n=$(echo ${img}| awk -F'[/.:]' '{printf "gcr.io/%s",$2}')
image=$(echo ${img}| awk -F'[/.:]' '{printf "/%s",$3}')
tag=$(echo ${img}| awk -F'[:]' '{printf ":%s",$2}')
docker tag $img "${n}${image}${tag}"
[[ ${n} == "gcr.io/google-containers" ]] && docker tag $img "k8s.gcr.io${image}${tag}"
done
3、 pull-google-container 工具腳本

K8S的exapmle裏的yaml默認是k8s.gcr.io的鏡像，爲了方便運行我們可以預先拉取相關鏡像：

vim pull-google.sh:

image=$1
echo $1
img=echo $image | sed 's/k8s.gcr.io/anjia0532/google-containers/g;s/gcr.io/anjia0532/g;s///./g;s/ /<br/>/g;s/_/-/g;s/anjia0532./anjia0532//g' | uniq | awk '{print ""$1""}'
echo "docker pull $img"
docker pull $img
echo "docker tag $img $image"
docker tag $img $image
~
然後放到/usr/local/bin

chmod +x pull-google.sh && cp pull-google.sh /usr/local/bin/pull-google-container
就可以愉快的使用pull-google-container 命令了

pull-google-container gcr.io/google-samples/gb-frontend:v4
gcr.io/google-samples/gb-frontend:v4
docker pull anjia0532/google-samples.gb-frontend:v4
v4: Pulling from anjia0532/google-samples.gb-frontend
Digest: sha256:aaa5b327ef3b4cb705513ab674fa40df66981616950c7de4912a621f9ee03dd4
Status: Image is up to date for anjia0532/google-samples.gb-frontend:v4
docker tag anjia0532/google-samples.gb-frontend:v4 gcr.io/google-samples/gb-frontend:v4

4. 替換已有的yaml

除了預先拉取鏡像，我們還可以將k8s.gcr.io 替換爲可執行鏡像

爲了方便替換，我們編寫一個repair_yaml 腳本：

vim /usr/local/bin/repair_yaml

cp $1 "$1.bak"
cat $1.bak | sed 's/k8s.gcr.io//anjia0532/google-containers./g;s/gcr.io/(.*)//anjia0532/./g;s/google_/google-/g;' > $1
rm -f "$1.bak"
保存退出，然後chmod +x /usr/local/bin/repair_yaml

效果：

$ repair_yaml frontend-deployment.yaml
$ cat frontend-deployment.yaml
apiVersion: apps/v1 # for k8s versions before 1.9.0 use apps/v1beta2 and before 1.8.0 use extensions/v1beta1
kind: Deployment
metadata:
name: frontend
spec:
selector:
matchLabels:
app: guestbook
tier: frontend
replicas: 3
template:
metadata:
labels:
app: guestbook
tier: frontend
spec:
containers:

• name: php-redis
  image: anjia0532/google-samples.gb-frontend:v4
  resources:
  requests:
  cpu: 100m
  memory: 100Mi
  env:
• name: GET_HOSTS_FROM
  value: dns

  If your cluster config does not include a dns service, then to

  instead access environment variables to find service host

  info, comment out the 'value: dns' line above, and uncomment the

  line below:

  value: env

  ports:

• containerPort: 80
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