Configure FederationsΒΆ

  1. Create a user with a federations role (Misc -> Users -> Add User). This user will have the ability to perform the following actions:

    • Edit the federation
    • Delete the federation
    • Add IPV4 resolvers
    • Add IPV6 resolvers
../../_images/federation01.png
  1. As a user with admin priveleges, create a Federation Mapping by going to Delivery Services -> Federations and then clicking ‘Add Federation Mapping’
  2. Choose the Delivery Service for the federation to be mapped to and assign it to the Federation User; click Add.
../../_images/federation02.png
  1. After the Federation is added, Traffic Ops will display the Federation.

    Changes can be made at this time or the Federation can be deleted. Notice that no resolvers have been added to the fedeation yet. This can only be done by the federation user created in step 1.

    If no further action is necessary, the Close button will close the window and display the list of all Federations.

../../_images/federation03.png

The Federation user can now add resolvers to the Federation Mapping in Traffic Ops.

  1. The federation user logs to traffic ops and stores the mojolicious cookie. The mojolicious cookie can be obtained manually using the debug tools on a web browser or via curl.

    Example:

    $ curl -i -XPOST "http://localhost:3000/api/1.1/user/login" -H "Content-Type: application/json" -d '{ "u": "federation_user1", "p": "password" }'
    
    HTTP/1.1 200 OK
    Date: Wed, 02 Dec 2015 21:12:06 GMT
    Content-Length: 65
    Access-Control-Allow-Credentials: true
    Content-Type: application/json
    Access-Control-Allow-Methods: POST,GET,OPTIONS,PUT,DELETE
    Set-Cookie: mojolicious=eyJleHBpcmVzIjoxNDQ5MTA1MTI2LCJhdXRoX2RhdGEiOiJmZWRlcmF0aW9uX3VzZXIxIn0---06b4f870d809d82a91433e92eae8320875c3e8b0; expires=Thu, 03 Dec 2015 01:12:06 GMT; path=/; HttpOnly
    Server: Mojolicious (Perl)
    Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept
    Cache-Control: no-cache, no-store, max-age=0, must-revalidate
    Connection: keep-alive
    Access-Control-Allow-Origin: http://localhost:8080
    
    {"alerts":[{"level":"success","text":"Successfully logged in."}]}
    
  2. The federation user sends a request to Traffic Ops to add IPV4 and/or IPV6 resolvers

    Example:

    $ curl -ki -H "Cookie: mojolicious=eyJleHBpcmVzIjoxNDQ5MTA1MTI2LCJhdXRoX2RhdGEiOiJmZWRlcmF0aW9uX3VzZXIxIn0---06b4f870d809d82a91433e92eae8320875c3e8b0;" -XPUT 'http://localhost:3000/api/1.2/federations' -d '
            {"federations": [
                    {   "deliveryService": "images-c1",
                            "mappings":
                                    { "resolve4": [ "8.8.8.8/32", "8.8.4.4/32" ],
                                      "resolve6": ["2001:4860:4860::8888/128", "2001:4860:4860::8844"]
                                    }
                    }
              ]
            }'
    
    HTTP/1.1 200 OK
    Set-Cookie: mojolicious=eyJleHBpcmVzIjoxNDQ5MTA1OTQyLCJhdXRoX2RhdGEiOiJmZWRlcmF0aW9uX3VzZXIxIn0---b42be0749415cefd1d14e1a91bb214845b4de556; expires=Thu, 03 Dec 2015 01:25:42 GMT; path=/; HttpOnly
    Server: Mojolicious (Perl)
    Date: Wed, 02 Dec 2015 21:25:42 GMT
    Content-Length: 74
    Access-Control-Allow-Credentials: true
    Content-Type: application/json
    Access-Control-Allow-Methods: POST,GET,OPTIONS,PUT,DELETE
    Cache-Control: no-cache, no-store, max-age=0, must-revalidate
    Access-Control-Allow-Origin: http://localhost:8080
    Connection: keep-alive
    Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept
    
    {"response":"federation_user1 successfully created federation resolvers."}
    
  3. The resolvers added by the federation user will now visible in Traffic Ops.

../../_images/federation04.png
  1. Any requests made from a client that resolves to one of the federation resolvers will now be given a CNAME from Traffic Router.

    Example:

    $ dig @tr.kabletown.net edge.images-c1.kabletown.net
    
    ; <<>> DiG 9.7.3-RedHat-9.7.3-2.el6 <<>> @tr.kabletown.net edge.images-c1.kabletown.net
    ; (1 server found)
    ;; global options: +cmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45110
    ;; flags: qr rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
    ;; WARNING: recursion requested but not available
    
    ;; QUESTION SECTION:
    ;edge.images-c1.kabletown.net.  IN A
    
    ;; ANSWER SECTION:
    edge.images-c1.kabletown.net.   30 IN CNAME img.mega-cdn.net.
    
    ;; Query time: 9 msec
    ;; SERVER: 10.10.10.10#53(10.10.10.10)
    ;; WHEN: Wed Dec  2 22:05:26 2015
    ;; MSG SIZE  rcvd: 84