Updated per conversation with Richard
Removing draft Richard's comments and some fixes Signed-off-by: Mary Anthony <mary@docker.com>pull/1625/head
Mary Anthony
parent
c6f63e298e
commit
6bce49d51d
|
|
@ -8,57 +8,74 @@ keywords = ["registry, on-prem, images, tags, repository, distribution, insecure
|
|||
|
||||
# Insecure Registry
|
||||
|
||||
While it's highly recommended to secure your registry using a TLS certificate issued by a known CA, you may alternatively decide to use self-signed certificates, or even use your registry over plain http.
|
||||
While it's highly recommended to secure your registry using a TLS certificate
|
||||
issued by a known CA, you may alternatively decide to use self-signed
|
||||
certificates, or even use your registry over plain http.
|
||||
|
||||
You have to understand the downsides in doing so, and the extra burden in configuration.
|
||||
You have to understand the downsides in doing so, and the extra burden in
|
||||
configuration.
|
||||
|
||||
## Deploying a plain HTTP registry
|
||||
|
||||
> **Warning**: it's not possible to use an insecure registry with basic authentication
|
||||
> **Warning**: it's not possible to use an insecure registry with basic authentication.
|
||||
|
||||
This basically tells Docker to entirely disregard security for your registry.
|
||||
While this is relatively easy to configure the daemon in this way, it is
|
||||
**very** insecure. It does expose your registry to trivial MITM. Only use this
|
||||
solution for isolated testing or in a tightly controlled, air-gapped
|
||||
environment.
|
||||
|
||||
1. edit the file `/etc/default/docker` so that there is a line that reads: `DOCKER_OPTS="--insecure-registry myregistrydomain.com:5000"` (or add that to existing `DOCKER_OPTS`)
|
||||
2. restart your Docker daemon: on ubuntu, this is usually `service docker stop && service docker start`
|
||||
1. Open the `/etc/default/docker` file or `/etc/sysconfig/docker` for editing.
|
||||
|
||||
**Pros:**
|
||||
Depending on your operating system, your Engine daemon start options.
|
||||
|
||||
- relatively easy to configure
|
||||
2. Edit (or add) the `DOCKER_OPTS` line and add the `--insecure-registry` flag.
|
||||
|
||||
**Cons:**
|
||||
This flag takes the URL of your registry, for example.
|
||||
|
||||
`DOCKER_OPTS="--insecure-registry myregistrydomain.com:5000"`
|
||||
|
||||
3. Close and save the configuration file.
|
||||
|
||||
4. Restart your Docker daemon
|
||||
|
||||
The command you use to restart the daemon depends on your operating system.
|
||||
For example, on Ubuntu, this is usually the `service docker stop` and `service
|
||||
docker start` command.
|
||||
|
||||
5. Repeat this configuration on every Engine host that wants to access your registry.
|
||||
|
||||
- this is **very** insecure: you are basically exposing yourself to trivial MITM, and this solution should only be used for isolated testing or in a tightly controlled, air-gapped environment
|
||||
- you have to configure every docker daemon that wants to access your registry
|
||||
|
||||
## Using self-signed certificates
|
||||
|
||||
> **Warning**: using this along with basic authentication requires to **also** trust the certificate into the OS cert store for some versions of docker (see below)
|
||||
|
||||
Generate your own certificate:
|
||||
This is more secure than the insecure registry solution. You must configure every docker daemon that wants to access your registry
|
||||
|
||||
1. Generate your own certificate:
|
||||
|
||||
mkdir -p certs && openssl req \
|
||||
-newkey rsa:4096 -nodes -sha256 -keyout certs/domain.key \
|
||||
-x509 -days 365 -out certs/domain.crt
|
||||
|
||||
Be sure to use the name `myregistrydomain.com` as a CN.
|
||||
2. Be sure to use the name `myregistrydomain.com` as a CN.
|
||||
|
||||
Use the result to [start your registry with TLS enabled](https://github.com/docker/distribution/blob/master/docs/deploying.md#get-a-certificate)
|
||||
3. Use the result to [start your registry with TLS enabled](https://github.com/docker/distribution/blob/master/docs/deploying.md#get-a-certificate)
|
||||
|
||||
Then you have to instruct every docker daemon to trust that certificate. This is done by copying the `domain.crt` file to `/etc/docker/certs.d/myregistrydomain.com:5000/ca.crt`.
|
||||
4. Instruct every docker daemon to trust that certificate.
|
||||
|
||||
Don't forget to restart docker after doing so.
|
||||
This is done by copying the `domain.crt` file to `/etc/docker/certs.d/myregistrydomain.com:5000/ca.crt`.
|
||||
|
||||
**Pros:**
|
||||
5. Don't forget to restart the Engine daemon.
|
||||
|
||||
- more secure than the insecure registry solution
|
||||
## Troubleshooting insecure registry
|
||||
|
||||
**Cons:**
|
||||
This sections lists some common failures and how to recover from them.
|
||||
|
||||
- you have to configure every docker daemon that wants to access your registry
|
||||
### Failing...
|
||||
|
||||
## Failing...
|
||||
|
||||
Failing to configure docker and trying to pull from a registry that is not using TLS will result in the following message:
|
||||
Failing to configure the Engine daemon and trying to pull from a registry that is not using
|
||||
TLS will results in the following message:
|
||||
|
||||
```
|
||||
FATA[0000] Error response from daemon: v1 ping attempt failed with error:
|
||||
|
|
@ -69,22 +86,26 @@ In the case of HTTPS, if you have access to the registry's CA certificate, no ne
|
|||
simply place the CA certificate at /etc/docker/certs.d/myregistrydomain.com:5000/ca.crt
|
||||
```
|
||||
|
||||
## Docker still complains about the certificate when using authentication?
|
||||
### Docker still complains about the certificate when using authentication?
|
||||
|
||||
When using authentication, some versions of docker also require you to trust the certificate at the OS level.
|
||||
When using authentication, some versions of docker also require you to trust the certificate at the OS level. Usually, on Ubuntu this is done with:
|
||||
|
||||
Usually, on Ubuntu this is done with:
|
||||
|
||||
cp certs/domain.crt /usr/local/share/ca-certificates/myregistrydomain.com.crt
|
||||
```bash
|
||||
$ cp certs/domain.crt /usr/local/share/ca-certificates/myregistrydomain.com.crt
|
||||
update-ca-certificates
|
||||
```
|
||||
|
||||
... and on Red Hat (and its derivatives) with:
|
||||
|
||||
```bash
|
||||
cp certs/domain.crt /etc/pki/ca-trust/source/anchors/myregistrydomain.com.crt
|
||||
update-ca-trust
|
||||
```
|
||||
|
||||
... On some distributions, e.g. Oracle Linux 6, the Shared System Certificates feature needs to be manually enabled:
|
||||
|
||||
update-ca-trust enable
|
||||
```bash
|
||||
$ update-ca-trust enable
|
||||
```
|
||||
|
||||
Now restart docker (`service docker stop && service docker start`, or any other way you use to restart docker).
|
||||
|
|
|
|||
|
|
@ -1,6 +1,10 @@
|
|||
<!--[metadata]>
|
||||
+++
|
||||
draft = true
|
||||
title = "Image Manifest V 2, Schema 1 "
|
||||
description = "image manifest for the Registry."
|
||||
keywords = ["registry, on-prem, images, tags, repository, distribution, api, advanced, manifest"]
|
||||
[menu.main]
|
||||
parent="smn_registry_ref"
|
||||
+++
|
||||
<![end-metadata]-->
|
||||
|
||||
|
|
|
|||
|
|
@ -1,6 +1,10 @@
|
|||
<!--[metadata]>
|
||||
+++
|
||||
draft = true
|
||||
title = "Image Manifest V 2, Schema 2 "
|
||||
description = "image manifest for the Registry."
|
||||
keywords = ["registry, on-prem, images, tags, repository, distribution, api, advanced, manifest"]
|
||||
[menu.main]
|
||||
parent="smn_registry_ref"
|
||||
+++
|
||||
<![end-metadata]-->
|
||||
|
||||
|
|
@ -10,7 +14,7 @@ This document outlines the format of of the V2 image manifest, schema version 2.
|
|||
The original (and provisional) image manifest for V2 (schema 1), was introduced
|
||||
in the Docker daemon in the [v1.3.0
|
||||
release](https://github.com/docker/docker/commit/9f482a66ab37ec396ac61ed0c00d59122ac07453)
|
||||
and is specified in the [schema 1 manifest definition](./manifest-v2-1.md)
|
||||
and is specified in the [schema 1 manifest definition](manifest-v2-1.md)
|
||||
|
||||
This second schema version has two primary goals. The first is to allow
|
||||
multi-architecture images, through a "fat manifest" which references image
|
||||
|
|
|
|||
Loading…
Reference in New Issue