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https://issues.apache.org/jira/browse/FLINK-28520?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martijn Visser reassigned FLINK-28520:
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Assignee: Jean-Damien HATZENBUHLER
> RestClient doesn't use SNI TLS extension
> ----------------------------------------
>
> Key: FLINK-28520
> URL: https://issues.apache.org/jira/browse/FLINK-28520
> Project: Flink
> Issue Type: Bug
> Components: Runtime / REST
> Affects Versions: 1.13.6, 1.14.5, 1.15.1
> Reporter: Jean-Damien HATZENBUHLER
> Assignee: Jean-Damien HATZENBUHLER
> Priority: Major
>
> The {{org.apache.flink.runtime.rest.RestClient}} didn't use SNI TLS extension
> when ssl options are activated.
>
> This cause the {{flink cli}} not be able to communicate with
> {{{}jobmanager{}}}.
> h2. How to fix this issue:
> Use:
> {code:java}
> public SslHandler createNettySSLHandler(ByteBufAllocator allocator, String
> hostname, int port)
> {code}
> instead of
> {code:java}
> public SslHandler createNettySSLHandler(ByteBufAllocator allocator)
> {code}
> h2. How to reproduce this issue:
> Given:
> * An existing {{flink}} instance running without ssl options
> * An existing certificate for the _hostname_
> * An existing load balancer with SNI like {{traefik}} and without a default
> certificate between the existing {{flink}} instance and the {{flink cli}}
> * A {{flink cli}} configured with the ssl options
> When:
> * Run the command {{flink list --jobmanager _hostname_:443}}
> Then:
> * You will get an error {{unrecognized_name}}
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