Nov 30, ec2 setup, logic fix
Merge remote-tracking branch 'yifan/ec2-setup'

check status
Nov 30, ec2 setup, logic fix
Merge remote-tracking branch 'yifan/ec2-setup'

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Nov 30, ec2 setup, logic fix
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Merge remote-tracking branch 'yifan/ec2-setup'

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Nov 30, ec2 setup, logic fix
Merge remote-tracking branch 'yifan/ec2-setup'

~~
Nov 30, ec2 setup, logic fix
Merge remote-tracking branch 'yifan/ec2-setup'

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