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first steps in migration notes #1061

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Oct 26, 2023
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first steps in migration notes #1061

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db7f0b1
first steps in migration notes
turbomam Aug 4, 2023
da26323
more about scp, sshproxy and tunneling
turbomam Aug 4, 2023
4c81bab
Fix typo
Shalsh23 Aug 4, 2023
9904202
Fix typos
Shalsh23 Aug 4, 2023
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4 changes: 4 additions & 0 deletions assets/misc/legacy_migration_notes.md
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1. Learn about the NERSC sshproxy app, which generates 24-hour password-less keys: https://www.nersc.gov/assets/Uploads/Using-sshproxy.pdf
2. Download the NERSC's `sshproxy` app with the `scp` command on page 5 of the PDF. One caveat: the documentation recommends getting the app from `cori.nersc.gov`, which has been retired. So use `perlmutter.nersc.gov` or `dtn01.nersc.gov`.
3. Create a NERSC ssh key with the `sshproxy` command that was just downloaded. Use the `-u` option unless your NERSC username is identical to your local username. For examples, my local username is "XYZ" but my NERSC username is "xyz", so I enter `.sshproxy -u xyz`
4. Create an ssh tunnel from your local computer, through `dtn01.nersc.gov` to the (production) MongoDB on mongo-loadbalancer.nmdc.production. Note that I am recommending tunneling the MongoDB port to local port 27777. Other NMDC poeple may recommend other ports. `ssh -i ~/.ssh/nersc -L27777:mongo-loadbalancer.nmdc.production.svc.spin.nersc.org:27017 -o ServerAliveInterval=60 <NERSC USERNAME>@dtn01.nersc.gov`
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