Merge pull request 2i2c-org#3229 from yuvipanda/smce-docs

Document how to set up a new cluster within NASA SMCE AWS

docs/hub-deployment-guide/new-cluster/index.md

@@ -30,4 +30,5 @@ Deploying Kubernetes to AWS has a distinctly different workflow than GCP or Azur
 :caption: Deploying Kubernetes
 new-cluster.md
 aws.md
+smce.md
 ```

docs/hub-deployment-guide/new-cluster/smce.md

@@ -0,0 +1,50 @@
+# AWS with NASA SMCE
+
+NASA's [Science Managed Cloud Environment](https://smce.nasa.gov/) provides us with
+AWS accounts where we can deploy JupyterHubs for their use. Thankfully, these are mostly
+vanilla AWS accounts where we have proper permissions, but there are a couple of extra
+points of interaction between the engineer setting up the hub and the community representative.
+
+## Getting access to the account
+
+This is very much the same as getting access to any other AWS account where billing
+is handled for us by someone else.
+
+1. The community representative will get in touch with SMCE to either provision a new
+   AWS account, or grant us full access to one that already exists.
+
+2. Once the community representative has access, they will create an
+   IAM account for *one* 2i2c engineer in this account, and make sure
+   they are a part of the `SMCE-ProjectAdmins` group.  This gives us
+   full access to the AWS account, and we can add other engineers here.
+
+3. This engineer should log in with the credentials provided by the community representative,
+   and set up [Multi Factor Authentication](https://aws.amazon.com/iam/features/mfa/). This
+   is required in all SMCE environments. You need to log out of the AWS console and back in
+   after setting up MFA to see your full permissions.
+
+4. This engineer should now create user accounts for all other 2i2c engineers, and make sure
+   they are all part of the `SMCE-ProjectAdmins` group.
+
+Once this is done, steps for the regular [AWS Cluster Setup](new-cluster:aws) can proceed,
+until completion of [provisioning credentials for CI/CD](new-cluster:aws:terraform:cicd).
+
+## Getting a MFA exemption for our `hub-continuous-deployer` user
+
+At the completion of [provisioning credentials for CI/CD](new-cluster:aws:terraform:cicd),
+we will have a IAM user named `hub-continuous-deployer` provisioned. This is what we use to
+deploy from GitHub actions, but also to deploy from our local machines. The MFA requirement
+needs to be exempted for this user before we can continue and actually deploy our hubs.
+
+The engineer needs to reach out to the community representative at this point, and ask
+for the MFA exemption. `hub-continuous-deployer` has a very narrow scope of permissions - only
+`eks:DescribeCluster` on the specific cluster we deployed. The community representative will
+have to reach out via their own internal processes to grant this exemption. This has
+always been granted so far - VEDA, GHG - and should not be a problem to get granted again.
+We have also received assurances that this process would be expedited to the extent possible.
+
+You can verify that this MFA exemption has been processed by looking at the list of groups
+the `hub-continuous-deployer` user belongs to. It should *not* contain the user `SMCE-UserRestrictions`.
+
+Once this exemption has been processed, you can continue as usual with deployment of the hub.
+