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Cake day: June 11th, 2023

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  • By default, an enencrypted boot drive is not sufficient to be able to decrypt a LUKs drive. If you have to type in your password to start the computer/unlock LUKs then you should be good.

    If you’ve setup a keyfile or TPM based decryption of LUKS, then your data is probably not safe (though a TPM based decryption could be if the OS is secure and secure boot is setup properly)

    In this case, if you have another server then you could setup a mutual tang/clevis system where each device gets the keys it needs from the other server on the LAN. Both would be LUKs encrypted. So if one is online the other gets the required key from the online one while booting. But if both are offline then no keys are available and you have to type in a LUKS password to boot. Something like https://www.ogselfhosting.com/index.php/2023/12/25/tang-clevis-for-a-luks-encrypted-debian-server/ but what they do with multiple servers is probably overkill






  • I think if you switch back to the original target that depends on those services they should start again?

    Like systemctl isolate yourtarget.target and then a systemctl isolate graphical.target to return to normal operation

    Isolate will stop any services that aren’t required by the dependency chain.

    Some of these might be user services though, in which case you’d need to create a user target

    It’s possible that you don’t need to use isolate though, and can just start a target that conflicts and then instead of stopping it, start graphical.target





  • Max@lemmy.worldtoScience Memes@mander.xyzstrobe party
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    17 days ago

    I think this is only true for some non intuitive definition of “temperature” of the light source. Fireflies aren’t a blackbody radiator, while the sun largely is. You absolutely can use non-equilibrium/non-blackbody light sources to heat something to hotter than the source. For example, lasers can heat something extremely hot while remaining “cool” (unless you’re considering the non equilibrium temperature of their excited atoms/electrons, which isn’t really fair.)