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Clarify migration from old akka management discovery (#26102)

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Christopher Batey 2018-12-13 10:57:59 +00:00 • committed by Arnout Engelen
parent 567f8a15e0
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akka-docs/src/main/paradox/discovery/index.md
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@ -20,9 +20,9 @@ In addition [Akka Management](https://developer.lightbend.com/docs/akka-manageme
* Consul * Consul
* Marathon API * Marathon API
Discovery used to be part of Akka Management but has become an Akka module as of `2.5.19` of Akka and version `0.21.0` Discovery used to be part of Akka Management but has become an Akka module as of `2.5.19` of Akka and version `0.50.0`
of Akka Management. If you're also using Akka Management for other service discovery methods or bootstrap make of Akka Management. If you're also using Akka Management for other service discovery methods or bootstrap make
sure you are using at least version `0.21.0`. sure you are using at least version `0.50.0` of Akka Management.
## Dependency ## Dependency
@ -243,3 +243,16 @@ The above configuration will result in `akka-dns` first being checked and if it
targets for the given service name then `config` is queried which i configured with one service called targets for the given service name then `config` is queried which i configured with one service called
`service1` which two hosts `host1` and `host2`. `service1` which two hosts `host1` and `host2`.
## Migrating from Akka Management Discovery
Akka Discovery is not compatible with older versions of Akka Management Discovery. At least version `0.50.0` of
any Akka Management module should be used if also using Akka Discovery.
Migration steps:
* Any custom discovery method should now implement `akka.discovery.ServiceDiscovery`
* `discovery-method` now has to be a configuration location under `akka.discovery` with at minimum a property `class` specifying the fully qualified name of the implementation of `akka.discovery.ServiceDiscovery`.
Previous versions allowed this to be a class name or a fully qualified config location e.g. `akka.discovery.kubernetes-api` rather than just `kubernetes-api`