Running a Traffic Control CDN

Why is my CRConfig.json rejected?

Especially in version 1.1.0, there’s a number of manual steps that need to be done after the initial install. Make sure that after the initial install, you perform these steps in order:

Note

Even though Traffic Ops allows you to enter the servers with no IPv6 address information, the CRConfig will not be accepted by Traffic Router without IPv6 address information for at least Traffic Router and Traffic Monitor. Traffic Control assumes in a lot of places that all servers have at least an IPv4 and an IPv6 address. If you are not using IPv6, it is best to enter dummy addresses for all server types, and turn IPv6 off in all delivery services. (https://github.com/Comcast/traffic_control/issues/44).

  • Add users

    Not necessarily needed for getting your CRConfig accepted, but always a good idea.

  • Add Divisions

    You will need at least one.

  • Add Regions

    You will need at least one.

  • Add Physical Locations

    You will need at least one.

  • Add Mid tier Cache Groups

    You will need at least one.

  • Add Edge tier Cache Groups

    You will need at least one.

  • Add Traffic Monitors

    You will need to enter at least one Traffic Monitor - make sure to change the server status to ONLINE.

  • Add Traffic Routers

    You will need to enter at least one Traffic Router - make sure to change the server status to ONLINE.

  • Add Edges

    You will need at least one edge cache to make Traffic Router accept the CRConfig.

  • Add Mid

    Technically you don’t need a mid tier, but if you have one, best to enter the info before continuing.

  • Change the polling.url parameters to reflect your CDN

    Set where to get the coverage zone map, and the geo IP database.

  • Create at least one delivery service, and assign at least one edge cache in REPORTED state to it.

    Even if it is a dummy DS, without a single DS, the CRConfig will not be accepted by Traffic Router.

  • Snapshot CRConfig

    Tools > Snapshot CRConfig diff, and write.

Now you are ready to install the sw on Traffic Monitor and then Traffic Router.