google gcr.io、k8s.gcr.io 国内镜像

1、首先添加docker官方的国内镜像

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

2、gcr.io镜像

根据开源项目：

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

作者将gcr.io相关镜像pull下来，然后push到docker官方仓库，相关转换语法如下：

语法

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gcr.io/namespace/image_name:image_tag 
# 等价于
anjia0532/namespace.image_name:image_tag
# 特别的
k8s.gcr.io/{image}/{tag} <==> gcr.io/google-containers/{image}/{tag} <==> anjia0532/google-containers.{image}/{tag}

批量转换

# 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/\//\http://www.toutiao.com/a6667386654434525707/g;s/ /\n/g;s/anjia0532\http://www.toutiao.com/a6667386654434525707/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 工具脚本

K8S的exapmle里的yaml默认是k8s.gcr.io的镜像，为了方便运行我们可以预先拉取相关镜像：

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/\//\http://www.toutiao.com/a6667386654434525707/g;s/ /\n/g;s/_/-/g;s/anjia0532\http://www.toutiao.com/a6667386654434525707/anjia0532\//g' | uniq | awk '{print ""$1""}'`
 echo "docker pull $img"
 docker pull $img
 echo "docker tag $img $image"
 docker tag $img $image
~ 

然后放到/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. 替换已有的yaml

除了预先拉取镜像，我们还可以将k8s.gcr.io 替换为可执行镜像

为了方便替换，我们编写一个repair_yaml 脚本：

vim /usr/local/bin/repair_yaml

 cp $1 "$1.bak"
 cat $1.bak | sed 's/k8s\.gcr\.io\//anjia0532\/google-containershttp://www.toutiao.com/a6667386654434525707/g;s/gcr\.io\/\(.*\)\//anjia0532\/\1http://www.toutiao.com/a6667386654434525707/g;s/google_/google-/g;' > $1
 rm -f "$1.bak"

保存退出，然后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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