It is highly recommended that you do not use the default fabric-address setting 239.255.0.1 on a production fabric. If someone starts workers on another fabric with the default settings, and the workers are on the same network, or are able to communicate with the other fabric via multicast, those workers will join the production fabric.
The fabric-address in that workers addr.cfg file determines the fabric that the worker will be a part of. Like most fabric configuration files, the addr.cfg file consists of name value pairs, but unlike the others, it is one of the few files that do not contain a version.
| Setting name |
Default value |
Description |
| admin-port |
30000 |
Port for administration communication. |
| fabric-address |
239.255.0.1 |
The MCAST address fabric clients use to communicate with the fabric. |
| request-port |
31000 |
Port for fabric communication. |
Updating addr.cfg to a worker is done using the fabric_ctl put-addr command.
 | Updating the addr.cfg is the only fabric administration function that affects only the specified workers. Changes to the addr.cfg logically moves the worker from fabric A to fabric B. When a worker is logically removed from a fabric there is no longer communication between that worker and other workers in the original fabric. That worker does not receive necessary update alerts, because it is effectively in a new fabric. |
