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Iglu Central Setup

This guide is designed for Iglu users wanting to create a public mirror or private clone of Iglu Central. There are a couple of reasons you may want to do this:

  1. You may want to access Iglu Central from a software system that cannot access the open internet.
  2. You may want a mirror of Iglu Central which has lower latency to your software system.

This guide is divided into two sections:

  1. Create Iglu Central Mirror
  2. Update your Iglu client configuration to point to your new Iglu Central

Create Iglu Central Mirror​

Hosting an Iglu Server based mirror​

You can mirror Iglu Central using [igluctl](/docs/pipeline-components-and-applications/iglu/igluctl-2/):

git clone https://github.com/snowplow/iglu-central
cd iglu-central
igluctl static push --public schemas/ http://MY-IGLU-URL 00000000-0000-0000-0000-000000000000

For further information on Iglu Central, consult the Iglu Central setup guide.

Hosting a Static Repository based mirror​

Iglu Central is built on top of the Iglu static repo server, so the first step is to setup a static repo. You can give your copy of Iglu Central a name like:

http://iglucentral.acme.com

Once you have completed this static repo setup, then copy into your /schemas sub-folder all of the schemas that you can find in the Iglu Central GitHub Repo

Once you have done this, check that your schemas are publically accessible, for example:

http://iglucentral.acme.com/schemas/com.snowplowanalytics.self-desc/instance/jsonschema/1-0-2

Update your Iglu client configuration​

You now need to update your Iglu client configuration to point to your Iglu Central mirror, rather than the original.

Given a standard Iglu client configuration:

{
  "schema": "iglu:com.snowplowanalytics.iglu/resolver-config/jsonschema/1-0-2",
  "data": {
    "cacheSize": 500,
    "repositories": [
      {
        "name": "Iglu Central",
        "priority": 0,
        "vendorPrefixes": [ "com.snowplowanalytics" ],
        "connection": {
          "http": {
            "uri": "http://iglucentral.com"
          }
        }
      }
    ]
  }
}

Update it to point to your Iglu Central mirror:

{
  "schema": "iglu:com.snowplowanalytics.iglu/resolver-config/jsonschema/1-0-2",
  "data": {
    "cacheSize": 500,
    "repositories": [
      {
        "name": "Acme Corp's Iglu Central mirror",
        "priority": 0,
        "vendorPrefixes": [ "com.snowplowanalytics" ],
        "connection": {
          "http": {
            "uri": "http://iglucentral.acme.com"
          }
        }
      }
    ]
  }
}

And that's it - your Iglu client should now resolve to your Iglu Central mirror, rather than the original.