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[TureNAS Scale] Need updated Java verision for 1.21 support #555

@TirantRex

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@TirantRex

1.21 currently does not work from the official TrueNAS Scale Charts due to an incompatible java version. Server will not start and produces no logs. The same server running version 1.20.4 works without issue.

Opening a shell in the MineOS pod and running "java --version" return the following:
openjdk 17.0.2 2022-01-18
OpenJDK Runtime Environment (build 17.0.2+8-Ubuntu-120.04)
OpenJDK 64-Bit Server VM (build 17.0.2+8-Ubuntu-120.04, mixed mode, sharing)

According to PaperMC's documentation (https://docs.papermc.io/paper/getting-started) 1.21 needs at least Java version 21 to work.

I was able to fix this issue by opening a Shell for the Pod and running "apt-get install openjdk-21-jdk" which allowed the server to run.

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