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store: fail faster if not running in EC2 #415

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store: fail faster if not running in EC2 #415

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Commits on Aug 24, 2023

  1. store: fail faster if not running in EC2 

    If you are running `chamber` outside of EC2 without a region
configured, the binary will take 5 seconds to fail because the default
ec2 metadata API timeout is 5 seconds.

Instead, take a few milliseconds to determine whether
we are even running on EC2. We attempt to do this by
checking the contents of different files on the disk, e.g.
/sys/devices/virtual/dmi/id/board_asset_tag, and then if all of those
fail, attempting to see if anything is listening on the metadata host.

This can help prevent the 5 second failure timeout.
    @kevinburkesegment
    kevinburkesegment committed Aug 24, 2023
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