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Add support for the configuration watcher to shut down the application to refresh the application (#1799)

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See #1772
This commit is contained in:
Ryan Baxter
2024-11-21 18:55:58 -05:00
committed by GitHub
parent 890af8f202
commit 16eec95fd0
12 changed files with 344 additions and 86 deletions
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docs/modules/ROOT/pages/spring-cloud-kubernetes-configuration-watcher.adoc
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@@ -193,6 +193,9 @@ change to a ConfigMap or Secret occurs then the HTTP implementation will use the
instances of the application which match the name of the ConfigMap or Secret and send an HTTP POST request to the application's actuator
`/refresh` endpoint. By default, it will send the post request to `/actuator/refresh` using the port registered in the discovery client.
You can also configure the configuration watcher to call the instances `shutdown` actuator endpoint. To do this you can set
`spring.cloud.kubernetes.configuration.watcher.refresh-strategy=shutdown`.
### Non-Default Management Port and Actuator Path
If the application is using a non-default actuator path and/or using a different port for the management endpoints, the Kubernetes service for the application
@@ -224,7 +227,13 @@ Another way you can choose to configure the actuator path and/or management port
## Messaging Implementation
The messaging implementation can be enabled by setting profile to either `bus-amqp` (RabbitMQ) or `bus-kafka` (Kafka) when the Spring Cloud Kubernetes Configuration Watcher
application is deployed to Kubernetes.
application is deployed to Kubernetes. By default, when using the messaging implementation the configuration watcher will send a `RefreshRemoteApplicationEvent` using
Spring Cloud Bus to all application instances. This will cause the application instances to refresh the application's configuration properties without
restarting the instance.
You can also configure the configuration to shut down the application instances in order to refresh the application's configuration properties.
When the application shuts down, Kubernetes will restart the application instance and the new configuration properties will be loaded. To use
this strategy set `spring.cloud.kubernetes.configuration.watcher.refresh-strategy=shutdown`.
## Configuring RabbitMQ