# neutron/

## plugins/

包括bigswitch、brocade、cisco、……等多种插件的配置文件（ini文件）。

## rootwrap.d

包括一系列的filter文件。包括debug.filters rootwrap是实现让非特权用户以root权限去运行某些命令。这些命令就在filter中指定。 以neutron用户为例，在/etc/sudoers.d/neutron文件中有

```
neutron ALL = (root) NOPASSWD: SETENV: /usr/bin/neutron-rootwrap
```

使得neutron可以以root权限运行neutron-rootwrap。

而在/etc/neutron/rootwarp.conf中定义了

```
filters_path=/etc/neutron/rootwrap.d,/usr/share/neutron/rootwrap,/etc/quantum/rootwrap.d,/usr/share/quantum/rootwrap
```

这些目录中定义了命令的filter，也就是说匹配这些filter中定义的命令就可以用root权限执行了。这些filter中命令的典型格式为

```
cmd-name: filter-name, raw-command, user, args
```

例如/usr/share/neutron/rootwrap/dhcp.filters文件中的如下命令允许以root身份执行ovs-vsctl命令。

```
ovs-vsctl: CommandFilter, ovs-vsctl, root
```

需要注意/etc/neutron/rootwrap.d，/usr/neutron/nova/rootwrap必须是root权限才能修改。


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://yeasy.gitbook.io/openstack_code_neutron/etc/neutron.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.