letsencrypt renew
1. Renew certificate
./letsencrypt-auto renew
Creating virtual environment...
Installing Python packages...
Installation succeeded.
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Processing /etc/letsencrypt/renewal/fc.enginius.me.conf
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new certificate deployed without reload, fullchain is
/etc/letsencrypt/live/fc.enginius.me/fullchain.pem
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Congratulations, all renewals succeeded. The following certs have been renewed:
/etc/letsencrypt/live/fc.enginius.me/fullchain.pem (success)
2. Re-run jupyterhub
jupyterhub -f ./jupyterhub_config.py