style95 commented on a change in pull request #5194:
URL: https://github.com/apache/openwhisk/pull/5194#discussion_r802185446
##########
File path: ansible/README.md
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@@ -148,6 +148,58 @@ ansible-playbook -i environments/$ENVIRONMENT prereq.yml
**Hint:** During playbook execution the `TASK [prereq : check for pip]` can
show as failed. This is normal if no pip is installed. The playbook will then
move on and install pip on the target machines.
+### [Optional] Enable the new scheduler
+
+You can enable the new scheduler of OpenWhisk.
+It will run one more component called "scheduler" and ETCD.
+
+#### Configure service providers for the scheduler
+You can update service providers for the scheduler as follows.
+
+**common/scala/src/main/resources**
+```
+whisk.spi {
+ ArtifactStoreProvider =
org.apache.openwhisk.core.database.CouchDbStoreProvider
+ ActivationStoreProvider =
org.apache.openwhisk.core.database.ArtifactActivationStoreProvider
+ MessagingProvider =
org.apache.openwhisk.connector.kafka.KafkaMessagingProvider
+ ContainerFactoryProvider =
org.apache.openwhisk.core.containerpool.docker.DockerContainerFactoryProvider
+ LogStoreProvider =
org.apache.openwhisk.core.containerpool.logging.DockerToActivationLogStoreProvider
+ LoadBalancerProvider = org.apache.openwhisk.core.loadBalancer.FPCPoolBalancer
+ EntitlementSpiProvider =
org.apache.openwhisk.core.entitlement.FPCEntitlementProvider
+ AuthenticationDirectiveProvider =
org.apache.openwhisk.core.controller.BasicAuthenticationDirective
+ InvokerProvider = org.apache.openwhisk.core.invoker.FPCInvokerReactive
+ InvokerServerProvider = org.apache.openwhisk.core.invoker.FPCInvokerServer
+ DurationCheckerProvider =
org.apache.openwhisk.core.scheduler.queue.ElasticSearchDurationCheckerProvider
+}
+.
+.
+.
+```
+
+#### Enable the scheduler
+- Make sure you enable the scheduler by configuring `scheduler_enable`.
+
+**ansible/environments/local/group_vars**
+```yaml
+scheduler_enable: true
+```
+
+#### [Optional] Enable ElasticSearch Activation Store
+When you use the new scheduler, it is recommended to use ElasticSearch as an
activation store.
+
+**ansible/environments/local/group_vars**
+```yaml
+db_activation_backend: ElasticSearch
+elastic_cluster_name: <your elasticsearch cluster name>
+elastic_protocol: <your elasticsearch protocol>
+elastic_index_pattern: <your elasticsearch index pattern>
+elastic_base_volume: <your elasticsearch volume directory>
+elastic_username: <your elasticsearch username>
+elastic_password: <your elasticsearch username>
Review comment:
Yes.
It's exactly the same as the way CouchDB works with OW.
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