jiangpengcheng commented on a change in pull request #4963:
URL: https://github.com/apache/openwhisk/pull/4963#discussion_r638494150
##########
File path: ansible/README.md
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@@ -196,6 +196,42 @@ ansible-playbook -i environments/$ENVIRONMENT routemgmt.yml
- To use the API Gateway, you'll need to run `apigateway.yml` and
`routemgmt.yml`.
- Use `ansible-playbook -i environments/$ENVIRONMENT openwhisk.yml` to avoid
wiping the data store. This is useful to start OpenWhisk after restarting your
Operating System.
+### Deploying Using MongoDB
+
+You can choose MongoDB instead of CouchDB as the database backend to store
entities.
+
+- Deploy a mongodb server(Optional, for test and develop only, use an external
MongoDB server in production)
+
+```
+ansible-playbook -i environments/<environment> mongodb.yml -e
mongodb_data_volume="/tmp/mongo-data"
+```
+
+- Then execute
+
+```
+cd <openwhisk_home>
+./gradlew distDocker
+cd ansible
+ansible-playbook -i environments/<environment> initMongodb.yml -e
mongodb_connect_string="mongodb://172.17.0.1:27017"
Review comment:
for `2.5.2` we need to add **' '** around string value, like `default('1
second')`
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