Document the use of aws sts assume-role and eight hour token expiry
#882
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- Now that tokens have an eight hour expiry (alphagov/govuk-aws#533), we don't need to do the intermediary workaround of calling `aws sts get-session-token` for a longer session without MFA. - This has the side effect that you'll need to re-authenticate with MFA if you wish to switch environments, but I don't think that's necessarily a bad thing at the moment.
- I wrongly thought that a "max_session_age" of 28800 seconds (eight hours) would apply to everyone's sessions automatically, but people can in fact request different session lengths up to the eight hour maximum with `--duration-seconds`, but otherwise the default is 1 hour.
pmanrubia
approved these changes
Apr 19, 2018
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(Increase the assume-role MFA expiry time to 8 hours (28800 seconds) govuk-aws#533), we don't need to do
the intermediary workaround of calling
aws sts get-session-tokenfora longer session without MFA.
if you wish to switch environments, but I don't think that's
necessarily a bad thing at the moment.