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https://issues.apache.org/jira/browse/CASSANDRA-20749?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Semb Wever updated CASSANDRA-20749:
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Fix Version/s: 5.1
(was: 6.x)
> Allow overriding arbitrary settings via environment variables
> -------------------------------------------------------------
>
> Key: CASSANDRA-20749
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20749
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: Local/Config
> Reporter: Paulo Motta
> Assignee: Paulo Motta
> Priority: Normal
> Fix For: 5.1
>
> Time Spent: 4h 10m
> Remaining Estimate: 0h
>
> Allow arbitrary cassandra.yaml settings to be overriden via environment
> variables. This allows performing runtime overrides to a cassandra node
> configuration without updating cassandra.yaml, what can be useful to test
> isolated changes or in docker environments where runtime environment
> variables can be supplied via the {{--env}} flag.
> This should transparently override arbitrary configuration supported in
> cassandra.yaml via environment variables loaded during startup matching the
> format {{{}CASS_{CASSANDRA_YAML_CONFIG_NAME{}}}}. So for example, to override
> the {{cassandra.yaml}} configuration cdc_enabled, this can be overriden via
> the environment variable {{{}CASS_CDC_ENABLED{}}}, the cassandra.yaml setting
> {{key_cache_save_period}} can be overriden via {{CASS_KEY_CACHE_SAVE_PERIOD}}
> and so on. This should support both simple and complex properties.
> This is analogous to the functionality added by CASSANDRA-17166 to override
> arbitrary configurations via system properties enabled by the flag
> {{{}-Dcassandra.config.allow_system_properties{}}}.
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