[GitHub] [druid] Thelin90 opened a new issue #11405: Hide Plaintext Passwords Druid cachedNamespace Lookups

[GitBox <gi...@apache.org>]

Thelin90 opened a new issue #11405:
URL: https://github.com/apache/druid/issues/11405


   ### Motivation
   
   Currently when pushing a cachedNamespace lookup, the password for the **JDBC** source is exposed, in plaintext in the lookups Apache Druid UI.
   
   ![image](https://user-images.githubusercontent.com/19892351/124257488-51a4ea00-db24-11eb-8558-acff12df5d49.png)
   
   Would like it to look like this instead:
   
   ![image](https://user-images.githubusercontent.com/19892351/124257724-8ca71d80-db24-11eb-86fc-ef13cc4b1a00.png)
   
   ### Proposed changes
   
   I would like to be able to mask this value, how? I am not sure, if it was possible to add an `env` into the `JSON` like:
   
   ```json
   {
     "type": "cachedNamespace",
     "extractionNamespace": {
       "type": "jdbc",
       "connectorConfig": {
         "connectURI": "jdbc:mysql://dburl:port/db?useSSL=false",
         "user": "some-user",
         "password": "${DATABASE_PASSWORD}",
         "createTables": false
       },
       "table": "some-table",
       "keyColumn": "some-key-column",
       "tsColumn": "some-ts-column",
       "valueColumn": "some-value-column",
       "namespace": "default"
     },
     "firstCacheTimeout": 12345678,
     "injective": true
   }
   ```
   
   ### Rationale
   
   This would be simple since, then while deploying druid, you simply attach this `env` which can be fetched in a secure way.
   
   For instance with `k8s` within a `STS` or `deployment` file::
   
   ```yaml
   - name: DATABASE_PASSWORD
     valueFrom:
       secretKeyRef:
         key: password
         name: db-secret
   ```
   
   ### Operational impact
   
   Make passwords more protected.
   


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