real-ip.md

title	keywords	description
real-ip	APISIX Plugin Real IP real ip	This document contains information about the Apache APISIX real-ip Plugin.

Description

The real-ip Plugin is used to dynamically change the client's IP address and port as seen by APISIX.

This is more flexible but functions similarly to Nginx's ngx_http_realip_module.

:::info IMPORTANT

This Plugin requires APISIX to run on APISIX-Base.

:::

Attributes

Name	Type	Required	Valid values	Description
source	string	True	Any Nginx variable like arg_realip or http_x_forwarded_for.	Dynamically sets the client's IP address and an optional port from APISIX's view.
trusted_addresses	array[string]	False	List of IPs or CIDR ranges.	Dynamically sets the set_real_ip_from field.

:::note

If the address specified in source is missing or invalid, the Plugin would not change the client address.

:::

Enabling the Plugin

The example below enables the real-ip Plugin on the specified Route:

curl -i http://127.0.0.1:9080/apisix/admin/routes/1  -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
{
    "uri": "/index.html",
    "plugins": {
        "real-ip": {
            "source": "arg_realip",
            "trusted_addresses": ["127.0.0.0/24"]
        },
        "response-rewrite": {
            "headers": {
                "remote_addr": "$remote_addr",
                "remote_port": "$remote_port"
            }
        }
    },
    "upstream": {
        "type": "roundrobin",
        "nodes": {
            "127.0.0.1:1980": 1
        }
    }
}'

Example usage

After you have enabled the Plugin as mentioned above, you can test it as shown below:

curl 'http://127.0.0.1:9080/index.html?realip=1.2.3.4:9080' -I

...
remote-addr: 1.2.3.4
remote-port: 9080

Disable Plugin

To disable the real-ip Plugin, you can delete the corresponding JSON configuration from the Plugin configuration. APISIX will automatically reload and you do not have to restart for this to take effect.

curl http://127.0.0.1:9080/apisix/admin/routes/1  -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
{
    "uri": "/index.html",
    "upstream": {
        "type": "roundrobin",
        "nodes": {
            "127.0.0.1:1980": 1
        }
    }
}'