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Fixing documentation comments by @thaJeztah 

Signed-off-by: Dima Stopel <dima@twistlock.com>
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Dima Stopel 2015-12-10 12:53:27 +02:00 committed by Tibor Vass
parent 00962f362b
commit a8a3c47ee5
3 changed files with 70 additions and 33 deletions
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69
docs/extend/authorization.md
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@ -13,7 +13,7 @@ weight = -1
# Create an authorization plugin
Docker’s out-of-the-box authorization model is all or nothing. Any user with
permission to access to the Docker daemon can run any Docker client command. The
permission to access the Docker daemon can run any Docker client command. The
same is true for callers using Docker's remote API to contact the daemon. If you
require greater access control, you can create authorization plugins and add
them to your Docker daemon configuration. Using an authorization plugin, a
@ -27,13 +27,13 @@ and methods information available to an authorization plugin developer.
## Basic principles
Docker's [plugin infrastructure](http://docs.docker.com/engine/extend/plugin_api) enables
extending Docker by dynamically loading, removing and communicating with
Docker's [plugin infrastructure](plugin_api.md) enables
extending Docker by loading, removing and communicating with
third-party components using a generic API. The access authorization subsystem
was built using this mechanism.
Using this subsystem, you don't need to rebuild the Docker daemon to add an
authorization plugin. You can add a plugin to a installed Docker daemon. You do
authorization plugin. You can add a plugin to an installed Docker daemon. You do
need to restart the Docker daemon to add a new plugin.
An authorization plugin approves or denies requests to the Docker daemon based
@ -41,9 +41,9 @@ on both the current authentication context and the command context. The
authentication context contains all user details and the authentication method.
The command context contains all the relevant request data.
Authorization plugins must follow the rules described in [Docker Plugin API](http://docs.docker.com/engine/extend/plugin_api/).
Each plugin must reside within directories described under the [plugin discovery](http://docs.docker.com/engine/extend/plugin_api/#plugin-discovery)
section.
Authorization plugins must follow the rules described in [Docker Plugin API](plugin_api.md).
Each plugin must reside within directories described under the
[Plugin discovery](plugin_api.md#plugin-discovery) section.
## Basic architecture
@ -58,12 +58,11 @@ authentication plugin(s). The request contains the user (caller) and command
context. The plugin is responsible for deciding whether to allow or deny the
request.
Below please find tow sequence diagrams describing the *allow* and *deny*
authorization flows:
The sequence diagrams below depict an allow and deny authorization flow:
![Bad Address](images/authz_allow.png)
![Authorization Allow flow](images/authz_allow.png)
![Bad Address](images/authz_deny.png)
![Authorization Deny flow](images/authz_deny.png)
Each request sent to the plugin includes the authenticated user, the HTTP
headers, and the request/response body. Only the user name and the
@ -72,15 +71,15 @@ credentials or tokens are passed. Finally, not all request/response bodies
are sent to the authorization plugin. Only those request/response bodies where
the `Content-Type` is either `text/*` or `application/json` are sent.
For commands that can potentially the hijack the HTTP connection (`HTTP
Upgrade`), such as `exec`, the authorization plugin are only called for the
For commands that can potentially hijack the HTTP connection (`HTTP
Upgrade`), such as `exec`, the authorization plugin is only called for the
initial HTTP requests. Once the plugin approves the command, authorization is
not applied to the rest of the flow. Specifically, the streaming data is not
passed to the authorization plugins. For commands that return chunked HTTP
response, such as `logs` and `events`, only the HTTP request are sent to the
authorization plugins as well.
response, such as `logs` and `events`, only the HTTP request is sent to the
authorization plugins.
During request/response processing, some authorization plugins flows might
During request/response processing, some authorization flows might
need to do additional queries to the Docker daemon. To complete such flows,
plugins can call the daemon API similar to a regular user. To enable these
additional queries, the plugin must provide the means for an administrator to
@ -88,7 +87,8 @@ configure proper authentication and security policies.
## Docker client flows
To enable and configure the authorization plugin, the plugin developer must support the Docker client interactions detailed in this section.
To enable and configure the authorization plugin, the plugin developer must
support the Docker client interactions detailed in this section.
### Setting up Docker daemon
@ -96,17 +96,18 @@ Enable the authorization plugin with a dedicated command line flag in the
`--authz-plugins=PLUGIN_ID` format. The flag supplies a `PLUGIN_ID` value.
This value can be the plugin’s socket or a path to a specification file.
```
$ docker daemon --authz-plugins=plugin1 --auth-plugins=plugin2,...
```bash
$ docker daemon --authz-plugins=plugin1 --authz-plugins=plugin2,...
```
Docker's authorization subsystem supports multiple `--authz-plugin` parameters.
Docker's authorization subsystem supports multiple `--authz-plugins` parameters.
### Calling authorized command (allow)
Your plugin must support calling the `allow` command to authorize a command. This call does not impact Docker's command line.
Your plugin must support calling the `allow` command to authorize a command.
This call does not impact Docker's command line.
```
```bash
$ docker pull centos
...
f1b10cd84249: Pull complete
@ -115,12 +116,17 @@ f1b10cd84249: Pull complete
### Calling unauthorized command (deny)
Your plugin must support calling the `deny` command to report on the outcome of a plugin interaction. This call returns messages to Docker's command line informing the user of the outcome of each call.
Your plugin must support calling the `deny` command to report on the outcome of
a plugin interaction. This call returns messages to Docker's command line informing
the user of the outcome of each call.
```
```bash
$ docker pull centos
…
Authorization failed. Pull command for user 'john_doe' is denied by authorization plugin 'ACME' with message ‘[ACME] User 'john_doe' is not allowed to perform the pull command’
Authorization failed. Pull command for user 'john_doe' is
denied by authorization plugin 'ACME' with message
‘[ACME] User 'john_doe' is not allowed to perform the pull
command’
```
Where multiple authorization plugins are installed, multiple messages are expected.
@ -128,7 +134,8 @@ Where multiple authorization plugins are installed, multiple messages are expect
## API schema and implementation
Sample code for a typical plugin can be found here [ADD LINK]. In addition to Docker's standard plugin registration method, each plugin should implement the following two methods:
In addition to Docker's standard plugin registration method, each plugin
should implement the following two methods:
* `/AuthzPlugin.AuthZReq` This authorize request method is called before the Docker daemon processes the client request.
@ -138,7 +145,7 @@ Sample code for a typical plugin can be found here [ADD LINK]. In addition to Do
**Request**:
```
```json
{
"User": "The user identification"
"UserAuthNMethod": "The authentication method used"
@ -152,7 +159,7 @@ Sample code for a typical plugin can be found here [ADD LINK]. In addition to Do
**Response**:
```
```json
{
"Allow" : "Determined whether the user is allowed or not"
"Msg": "The authorization message"
@ -162,7 +169,8 @@ Sample code for a typical plugin can be found here [ADD LINK]. In addition to Do
#### /AuthzPlugin.AuthZRes
**Request**:
```
```json
{
"User": "The user identification"
"UserAuthNMethod": "The authentication method used"
@ -178,7 +186,8 @@ Sample code for a typical plugin can be found here [ADD LINK]. In addition to Do
```
**Response**:
```
```json
{
"Allow" : "Determined whether the user is allowed or not"
"Msg": "The authorization message"

5
docs/reference/commandline/daemon.md
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@ -610,7 +610,7 @@ authorization plugins when you start the Docker `daemon` using the
`--authz-plugins=PLUGIN_ID` option.
```bash
docker daemon --authz-plugins=plugin1 --auth-plugins=plugin2,...
docker daemon --authz-plugins=plugin1 --authz-plugins=plugin2,...
```
The `PLUGIN_ID` value is either the plugin's name or a path to its specification
@ -624,8 +624,7 @@ multiple plugins installed, at least one must allow the request for it to
complete.
For information about how to create an authorization plugin, see [authorization
plugin](https://docs.docker.com/engine/extend/authorization/) section in the
Docker extend section of this documentation.
plugin](../../extend/authorization.md) section in the Docker extend section of this documentation.
## Miscellaneous options

29
man/docker-daemon.8.md
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@ -7,6 +7,7 @@ docker-daemon - Enable daemon mode
# SYNOPSIS
**docker daemon**
[**--api-cors-header**=[=*API-CORS-HEADER*]]
[**--authz-plugins**[=*[]*]]
[**-b**|**--bridge**[=*BRIDGE*]]
[**--bip**[=*BIP*]]
[**--cluster-store**[=*[]*]]
@ -70,6 +71,9 @@ format.
**--api-cors-header**=""
Set CORS headers in the remote API. Default is cors disabled. Give urls like "http://foo, http://bar, ...". Give "*" to allow all.
**--authz-plugins**=""
Set authorization plugins to load
**-b**, **--bridge**=""
Attach containers to a pre\-existing network bridge; use 'none' to disable container networking
@ -456,6 +460,31 @@ Specifies the path to a local file with a PEM encoded private key. This
private key is used as the client key for communication with the
Key/Value store.
# Access authorization
Docker's access authorization can be extended by authorization plugins that your
organization can purchase or build themselves. You can install one or more
authorization plugins when you start the Docker `daemon` using the
`--authz-plugins=PLUGIN_ID` option.
```bash
docker daemon --authz-plugins=plugin1 --authz-plugins=plugin2,...
```
The `PLUGIN_ID` value is either the plugin's name or a path to its specification
file. The plugin's implementation determines whether you can specify a name or
path. Consult with your Docker administrator to get information about the
plugins available to you.
Once a plugin is installed, requests made to the `daemon` through the command
line or Docker's remote API are allowed or denied by the plugin. If you have
multiple plugins installed, at least one must allow the request for it to
complete.
For information about how to create an authorization plugin, see [authorization
plugin](https://docs.docker.com/engine/extend/authorization.md) section in the
Docker extend section of this documentation.
# HISTORY
Sept 2015, Originally compiled by Shishir Mahajan <shishir.mahajan@redhat.com>