A simple HTTP server that returns EC2-style introspective information that varies depending on the IP address making the request.

  rancher-metadata [--debug] [--listen host:port] [--log path] [--pid-file path] --answers /path/to/answers.json

  godep go build

{
  "10.1.2.2": {
    "key1": "value1"
    "arbitrarily": {
      "nested": [
        "JSON", "of", "any", "type", 42, null, false
      ]
    }
  },

  "192.168.0.2": {
    "key1": "value2"
  },

  // "default" is a special key that will be checked if no answer is found in a client IP-specific entry
  "default": {
    "key1": "value3"
  }
}

A query is answered by following the pieces of the path to walk the answers for the requested IP one step at a time. If the key in the first section of the path is not found or there is no answers entry for the request IP, the "default" section is checked. Defaults are not checked if there are client-specific answers they match one (or more) levels of the path.

If the request contains an Accept header requesting application/json, the response will be the matching subtree from the JSON answer file.

For bugs, questions, comments, corrections, suggestions, etc., open an issue in rancher/rancher with a title starting with [rancher-metadata] .

Or just click here to create a new issue.

Copyright (c) 2015 Rancher Labs, Inc.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.