我已经在Google Compute Engine上创建了两个实例的docker swarm。
Docker版本18.06.1-ce，在Ubuntu 18.04.1 LTS上构建e68fc7a
我创建了一个服务帐户：
gcloud iam service-accounts create ${KEY_NAME} --display-name "${KEY_DISPLAY_NAME}"
gcloud projects add-iam-policy-binding $PROJECT --member serviceAccount:${KEY_NAME}@${PROJECT}.iam.gserviceaccount.com --role roles/storage.admin
gcloud iam service-accounts keys create --iam-account ${KEY_NAME}@${PROJECT}.iam.gserviceaccount.com key.json
将key.json传输到我的docker swarm master：
然后我运行了以下命令：
gcloud auth configure-docker
cat key.json | tr '\n' ' ' | docker login -u _json_key --password-stdin \
https://eu.gcr.io
我可以从我的私人eu.gcr.io存储库中成功提取图像：
docker pull eu.gcr.io/$PROJECT/$IMAGE
因此，登录似乎可以正常工作，并且gcloud帮助器似乎已正确安装。
但是在我的团队中创建服务失败：
docker service create --replicas 2 --network overlay --name $NAME eu.gcr.io/$PROJECT/$IMAGE --with-registry-auth
image eu.gcr.io/$PROJECT/$IMAGE:latest could not be accessed on a registry to record
its digest. Each node will access eu.gcr.io/$PROJECT/$IMAGE:latest independently,
possibly leading to different nodes running different versions of the image.
qwdm524vggn50j4lzoe5paknj
overall progress: 0 out of 2 tasks
1/2: No such image: eu.gcr.io/$PROJECT/$IMAGE:latest
2/2: No such image: eu.gcr.io/$PROJECT/$IMAGE:latest
查看syslog显示以下内容：
Aug 25 13:37:15 mgr-1 dockerd[1368]: time="2018-08-25T13:37:15.299064551Z" level=info msg="Attempting next endpoint for pull after error: unauthorized: You don't have the needed permissions to perform this operation, and you may have invalid credentials. To authenticate your request, follow the steps in: https://cloud.google.com/container-registry/docs/advanced-authentication"
Aug 25 13:37:15 mgr-1 dockerd[1368]: time="2018-08-25T13:37:15.299168218Z" level=error msg="pulling image failed" error="unauthorized: You don't have the needed permissions to perform this operation, and you may have invalid credentials. To authenticate your request, follow the steps in: https://cloud.google.com/container-registry/docs/advanced-authentication" module=node/agent/taskmanager node.id=xgozmc8iyjls7ulh4k3tvions service.id=qwdm524vggn50j4lzoe5paknj task.id=qrktpo34iuhiyl1rmbi71y4wg
AFAICS，我使用正确的服务帐户JSON登录到Google Container Repository（随着docker pull的工作），我向--with-registry-auth添加了标志docker create service，这已经是对similar questions，但仍然无效。 docker create service的工作类似于docker pull吗？
有什么想法可以解决这个问题吗？
更新
我也尝试了Gitlab Registry，而不是Google Container Registry。在Gitlab网站上创建了一个注册表部署令牌，并输入了以下命令：
docker login registry.gitlab.com -u $USERNAME -p $PASSWORD
然后这将起作用：
docker pull registry.gitlab.com/$ORGANISATION/$PROJECT/$IMAGE
但是此命令失败，并显示类似错误：
docker service create --replicas 2 --network overlay --name $NAME registry.gitlab.com/$ORGANISATION/$PROJECT/$IMAGE --with-registry-auth
image registry.gitlab.com/$ORGANISATION/$PROJECT/$IMAGE:latest could not be accessed on a registry to record
its digest. Each node will access registry.gitlab.com/$ORGANISATION/$PROJECT/$IMAGE:latest independently,
possibly leading to different nodes running different
versions of the image.
r5fqg94jrvt587le0fu779zaw
overall progress: 0 out of 2 tasks
1/2: No such image: $ORGANISATION/$PROJECT/$IMAGE:latest
2/2: No such image: $ORGANISATION/$PROJECT/$IMAGE:latest
/var/log/syslog包含
Aug 25 21:56:14 mgr-1 dockerd[1368]: time="2018-08-25T21:56:14.615895063Z" level=error msg="pulling image failed" error="Get https://registry.gitlab.com/v2/$ORGANISATION/$PROJECT/$IMAGE/manifests/latest: denied: access forbidden" module=node/agent/taskmanager node.id=xgozmc8iyjls7ulh4k3tvions service.id=r5fqg94jrvt587le0fu779zaw task.id=huwpjtu1wujk527t84y7yvbvd
所以看来docker create service没有使用提供的凭据，并且问题与Google Container Registry或Gitlab Registry没有关系？
答案 0 :(得分：1)
好的，我发现了问题。我必须使用：
docker service create --with-registry-auth --replicas 2 --network overlay --name $NAME registry.gitlab.com/$ORGANISATION/$PROJECT/$IMAGE
而不是
docker service create --replicas 2 --network overlay --name $NAME registry.gitlab.com/$ORGANISATION/$PROJECT/$IMAGE --with-registry-auth
在后一种情况下，--with-registry-auth被认为是我的映像的参数，而不是docker service create调用的参数，因此没有使用身份验证从任一私有存储库中提取映像。