Finished Tutorial on flask website

2 files changed, 146 insertions, 2 deletions

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 This article assumes you have completed up to setting up Nginx based on the [Last Article](/articles/rpilinuxserver/), or that you already have a server setup.
 
-##
+## Configuring Nginx
+
+First, make your folder for the website, this is where your website will live:
+
+<pre><code>
+sudo mkdir -p /var/www/websiteName
+</pre></code>
+
+Next, we need to set the proper permissions to make sure everything works:
+
+<pre><code>
+sudo chown -R nginx /var/www/websiteName
+sudo chmod -R 755 /var/www/websiteName
+</pre></code>
+
+Now, we will create the config file for website:
+
+<pre><code>
+sudo nano /etc/nginx/conf.d/websiteName.conf
+</pre></code>
+
+and paste the following into the file:
+
+<pre><code>
+server {
+        listen 80;
+        server_name example.com www.example.com;
+
+        location / {
+                proxy_pass http://127.0.0.1:8000/;
+                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+                proxy_set_header X-Forwarded-Proto $scheme;
+                proxy_set_header X-Forwarded-Host $host;
+                proxy_set_header X-Forwarded-Prefix /;
+        }
+}
+</pre></code>
+
+Now, confirm that the nginx configuration is ok:
+
+<pre><code>
+sudo nginx -t
+</pre></code>
+
+Restart nginx:
+
+<pre><code>
+sudo systemctl restart nginx
+sudo systemctl status nginx
+</pre></code>
+
+Next, set SELinux to permissive mode:
+
+<pre><code>
+sudo setenforce permissive
+sudo getenforce
+</pre></code>
+
+Now, we will need to set SELinux to permissive mode permanently:
+
+<pre><code>
+sudo sed -i --follow-symlinks 's/SELINUX=enforcing/SELINUX=permissive/g' /etc/sysconfig/selinux
+</pre></code>
+
+## Running the Flask App
+
+### Install Gunicorn
+
+To run the your Flask website you need to install gunicorn.
+
+<pre><code>
+pip install gunicorn
+sudo cp ~/.local/bin/gunicorn /usr/bin/gunicorn
+</pre></code>
+
+### Configure Systemd
+
+You will need to create a systemd service for gunicorn.
+
+In `/etc/systemd/system/yourapp.service`
+
+<pre><code>
+[Unit]
+Description = yourapp
+After = network.target
+
+[Service]
+PermissionsStartOnly = true
+PIDFile = /run/yourapp/yourapp.pid
+User = gunicorn
+Group = gunicorn
+WorkingDirectory = /var/www/yourapp
+ExecStartPre = /bin/mkdir /run/yourapp
+ExecStartPre = /bin/chown -R gunicorn:gunicorn /run/yourapp
+ExecStart = /usr/bin/gunicorn main:app -b 0.0.0.0:8000 --pid /run/yourapp/yourapp.pid
+ExecReload = /bin/kill -s HUP $MAINPID
+ExecStop = /bin/kill -s TERM $MAINPID
+ExecStopPost = /bin/rm -rf /run/yourapp
+PrivateTmp = true
+
+[Install]
+WantedBy = multi-user.target
+</pre></code>
+
+Now you will need to run the following commands:
+
+<pre><code>
+sudo systemctl daemon-reload
+sudo systemctl enable yourapp
+sudo systemctl start yourapp
+</pre></code>
+
+At this point when you navigate to your website, it should load.
+
+## Installing and Running Certbot
+
+To install Certbot run:
+
+<pre><code>
+sudo dnf install certbot python3-certbot-nginx
+</pre></code>
+
+To get SSL certificates for your websites run:
+
+<pre><code>
+sudo certbot --nginx
+</pre></code>
+
+Answer the prompts that show up on screen as you wish.
+
+To configure auto renewal of the SSL certificate run:
+
+<pre><code>
+crontab -e
+</pre></code>
+
+and add the following line:
+
+<pre><code>
+0 12 * * * /usr/bin/certbot renew --quiet
+</pre></code>
+
+This will check everyday at noon to see if the certificate will expire in the
+next month, if so it will renew the certificate.
+
+Now your website should be operational.
 
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-#