[英]Configuring local registry with self-signed certificate
I want to configure a local docker registry with self-signed certificate which i will be using inside my local network.我想使用我将在本地网络中使用的自签名证书配置本地 docker 注册表。 I'm following instruction from docker manual [1, 2], but nevertheless run into errors.
我正在遵循 docker 手册 [1, 2] 中的说明,但还是遇到了错误。
Precisely, my problem is following.准确地说,我的问题如下。 I create a self signed certificate on the local registry machine:
我在本地注册机上创建了一个自签名证书:
openssl req \
-newkey rsa:4096 -nodes -sha256 -keyout certs/domain.key \
-x509 -days 365 -out certs/domain.crt \
-subj "/C=US/ST=Oregon/L=Portland/O=Company Name/OU=Org/CN=openmpi-dockerregistry.local"
I put this certificate into /etc/docker/certs.d/openmpi-dockerregistry:443/ca.crt
on each of the local machines.我将此证书放入
/etc/docker/certs.d/openmpi-dockerregistry:443/ca.crt
本地机器上的/etc/docker/certs.d/openmpi-dockerregistry:443/ca.crt
。
Then I start registry and push an image there.然后我启动注册表并在那里推送一个图像。 Since I do not have DNS configured inside my network, I just put an entry into
/etc/hosts
.由于我的网络中没有配置 DNS,我只是在
/etc/hosts
输入了一个条目。
Next I try to pull the image on the local machine, but this operation fails:接下来我尝试拉取本地机器上的镜像,但是这个操作失败了:
$ docker run -it openmpi-dockerregistry.local:443/hello-world
Unable to find image 'openmpi-dockerregistry.local:443/hello-world:latest' locally
docker: Error response from daemon: Get https://openmpi-dockerregistry.local:443/v2/: x509: certificate is not valid for any names, but wanted to match openmpi-dockerregistry.local.
See 'docker run --help'.
I'm very suspicious about message "x509: certificate is not valid for any names", which sounds that I did not specify CN correctly, but reading the certificate indicates the opposite ( full output ):我对消息“x509:证书对任何名称都无效”非常怀疑,这听起来我没有正确指定 CN,但阅读证书表明相反( 完整输出):
$ openssl x509 -text -noout -in certs/domain.crt
....
Signature Algorithm: sha256WithRSAEncryption
Issuer: C = US, ST = Oregon, L = Portland, O = Company Name, OU = Org, CN = openmpi-dockerregistry.local
....
Another option which I tried is to access the register directly by IP.我尝试的另一个选项是直接通过 IP 访问寄存器。 I followed a manual[3] and added IP SAN to the certificate.
我按照手册 [3] 并将 IP SAN 添加到证书中。 Additionally I also set CN=*.
另外我还设置了 CN=*。 So that the resulting certificate now contains following ( full ):
这样生成的证书现在包含以下( 完整):
X509v3 extensions:
X509v3 Subject Alternative Name:
IP Address:<ip address>
But now when I try to pull the image I get following error message:但是现在当我尝试拉图像时,我收到以下错误消息:
$ docker run -it <ip>:443/hello-world
Unable to find image '<ip>:443/hello-world:latest' locally
docker: Error response from daemon: Get https://<ip>:443/v2/: x509: cannot validate certificate for <ip> because it doesn't contain any IP SANs.
See 'docker run --help'
Although the file /etc/docker/certs.d/<ip>:443/ca.crt
contains the IP address.尽管文件
/etc/docker/certs.d/<ip>:443/ca.crt
包含 IP 地址。
Could you help me to find a way to pull images from local registry?你能帮我找到一种从本地注册表中提取图像的方法吗?
Update更新
How do I start docker registry?如何启动 docker 注册表?
$ docker run -d \
-v `pwd`/certs:/certs \
-e REGISTRY_HTTP_ADDR=0.0.0.0:$REGISTRY_PORT \
-e REGISTRY_HTTP_TLS_CERTIFICATE=/certs/domain.crt \
-e REGISTRY_HTTP_TLS_KEY=/certs/domain.key \
-p $REGISTRY_PORT:$REGISTRY_PORT \
--restart=always \
--name registry \
registry:2
I think the problem is that you didn't copy the certificate and key in the /etc/docker/certs.d/
folder.我认为问题在于您没有复制
/etc/docker/certs.d/
文件夹中的证书和密钥。
The folder should look like this:该文件夹应如下所示:
/etc/docker/certs.d/
└── openmpi-dockerregistry.local:443
├── client.cert
├── client.key
└── ca.crt
In my case I had no ca.crt
and it worked fine.就我而言,我没有
ca.crt
,它运行良好。
Reference: https://docs.docker.com/engine/security/certificates/参考: https : //docs.docker.com/engine/security/certificates/
I implemented your setup on my machine, everything worked fine after I copied domain.key and domain.crt (and renamed them) in the /etc/docker/certs.d folder.我在我的机器上实现了你的设置,在我复制了 /etc/docker/certs.d 文件夹中的 domain.key 和 domain.crt(并重命名它们)后,一切正常。 The only difference was that I used
openmpi-dockerregistry
as a domain instead of openmpi-dockerregistry.local
唯一的区别是我使用
openmpi-dockerregistry
作为域而不是openmpi-dockerregistry.local
You need to edit your /etc/ssl/openssl.cnf to have the FQDN (openmpi-dockerregistry.local) and the IP address in the IP SANs list.您需要编辑 /etc/ssl/openssl.cnf 以在 IP SAN 列表中包含 FQDN (openmpi-dockerregistry.local) 和 IP 地址。 Add as follows:
添加如下:
[ v3_ca ]
# Extensions for a typical CA
subjectAltName = @alt_names
[ alt_names ]
IP.1 = <IP>
DNS.1 = openmpi-dockerregistry.local
Now generate the cert using the following command:现在使用以下命令生成证书:
openssl req -config /etc/ssl/openssl.cnf \
-newkey rsa:4096 -nodes -sha256 -keyout certs/domain.key \
-x509 -days 365 -out certs/domain.crt \
-subj "/C=US/ST=Oregon/L=Portland/O=Company Name/OU=Org/CN=openmpi-dockerregistry.local"
Check whether the cert has the IP and the DNS in the IP SANs list with this command:使用以下命令检查证书是否具有 IP SAN 列表中的 IP 和 DNS:
openssl x509 -in domain.crt -text -noout
You should see something like this in the output if all went right:如果一切顺利,您应该在输出中看到类似的内容:
X509v3 extensions:
X509v3 Subject Alternative Name:
IP Address:<IP>, DNS:openmpi-dockerregistry.local
Now copy this cert in the client docker certs directory in the following location:现在将此证书复制到客户端docker certs 目录中的以下位置:
/etc/docker/certs.d/openmpi-dockerregistry.local/ca.crt
You should be good now.你现在应该很好。
I had the same problem.我有同样的问题。 Turned out I did not add a CN or Common Name when creating the cert.
原来我在创建证书时没有添加 CN 或通用名称。 I remade the certs, remembering to include the CN, restarted the registry, and recopied the cert over to the other nodes.
我重新制作了证书,记得包含 CN,重新启动注册表,并将证书重新复制到其他节点。 This solved my problem.
这解决了我的问题。
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