What is the best way to update Mapserver with current AWS credentials for the /vsis3/ driver?
I am using the /vsis3/ driver to render images in a private S3 bucket. I am currently setting the credentials as fastcgi parameters in my nginx conf. I would like to use temporary credentials provided by IAM roles, which change periodically. When the credentials change, I currently have to restart Nginx. Ideally I would define the environment variables (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_SESSION_TOKEN) in my Mapfile. Since Mapserver reads the mapfile for every request, I could just update the Mapfile when the credentials change. I think this would give me uninterrupted access to serving imagery using /vsis3/. Thanks, Pete
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