wiki/howto/windestimation.md
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@@ -19,6 +19,29 @@ To complete the training process successfully, you need to make sure that you ha
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In our docker registry under ``docker.sapsailing.com:443`` there is a repository called ``windestimationtraining`` where images can be found to run the training process in a mostly automated way. All you need is an account for ``docker.sapsailing.com:443`` and an account on ``sapsailing.com`` that has the ``TRACKED_RACE:EXPORT`` permission for all races in the archive server (see the ``raw-data`` role). Furthermore, you need a MongoDB with approximately 100GB of available space. This can be a MongoDB replica set, of course. All you need is the URI to establish the connection.
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+If you want to try the following on a plain Amazon Linux instance, try to start with an instance type that has fast SSD storage attached (NVMe) and 16GB of RAM, such as ``c5d.2xlarge``. SSH into it (probably with the ``ec2-user`` account), then try this:
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+
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+```
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+ sudo -i
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+ # Launch cfdisk for the NVMe volume, give it a gpt partition table and create a single partition spanning the entire disk:
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+ cfdisk /dev/nvme1n1
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+ mkfs.xfs /dev/nvme1n1p1
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+ mount /dev/nvme1n1p1 /var/lib/mongo
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+ echo "[mongodb-org-4.4]
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+name=MongoDB Repository
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+baseurl=https://repo.mongodb.org/yum/amazon/2013.03/mongodb-org/4.4/x86_64/
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+gpgcheck=1
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+enabled=1
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+gpgkey=https://www.mongodb.org/static/pgp/server-4.4.asc" >/etc/yum.repos.d
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+ yum update
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+ yum install -y mongodb-org-server mongodb-org-tools mongodb-org-shell docker
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+ chown mongod /var/lib/mongo
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+ chgrp mongod /var/lib/mongo
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+ systemctl start mongod
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+ systemctl start docker
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+ touch /tmp/windEstimationModels.dat
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+```
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+
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For your account that is equipped with the ``TRACKED_RACE:EXPORT`` permission you'll need the bearer token which you can obtain, when logged in on the web site, from [https://security-service.sapsailing.com/security/api/restsecurity/access_token](https://security-service.sapsailing.com/security/api/restsecurity/access_token). The value of the ``access_token`` attribute is what you will need in the following command:
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```