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Hosting (as a service)

Note: this is no longer the recommended way of hosting PiSearch. See Hosting in Docker unless you have a good reason not to!

This is a quick setup guide for an instance of the PiSearch API directly on a bare metal server or VM.
It is hosted on Debian Linux (version 9/Stretch) using apache2 as a reverse proxy to pass requests on to Kestrel running as a service listening on port 5000.

Pre-reqs

apache2 and dotnet must be installed.
For other dependencies to set up, see Running the API.

User

adduser pisearch

Directories

mkdir /var/www/v2.api.pisearch.joshkeegan.co.uk
chown pisearch /var/www/v2.api.pisearch.joshkeegan.co.uk

Apache

Mods

a2enmod headers
a2enmod proxy
a2enmod proxy_http

Config

Create a config file at /etc.apache2/sites-available/v2.api.pisearch.joshkeegan.co.uk.conf containing:

<VirtualHost *:*>
    RequestHeader set "X-Forwarded-Proto" expr=%{REQUEST_SCHEME}
</VirtualHost>

<VirtualHost *:80>
    ProxyPreserveHost On
    ProxyPass / http://127.0.0.1:5000/
    ProxyPassReverse / http://127.0.0.1:5000/
    ServerName v2.api.pisearch.joshkeegan.co.uk
    ErrorLog ${APACHE_LOG_DIR}/pisearch-error.log
    CustomLog ${APACHE_LOG_DIR}/pisearch-access.log common
</VirtualHost>

Symlink to it from sites-enabled:

ln -s /etc/apache2/sites-available/v2.api.pisearch.joshkeegan.co.uk.conf /etc/apache2/sites-enabled/v2.api.pisearch.joshkeegan.co.uk.conf

Restart

Finally, in order to use the new modules and config, restart apache:

service apache2 restart

Publish

Locally, run make publish-api to publish the api.
Upload the contents of StringSearch.Api/out to /var/www/v2.api.pisearch.joshkeegan.co.uk on the server. Set any production config in appsettings.Production.json.

Service

To check you have set everything up correctly, you can run Kestrel from the terminal with dotnet StringSearch.Api.dll, but for production it is better to use a service.
Configure the new service by creating /etc/systemd/system/pisearch-api.service containing:

[Unit]
Description=PiSearch API

[Service]
WorkingDirectory=/var/www/v2.api.pisearch.joshkeegan.co.uk
ExecStart=/usr/bin/dotnet /var/www/v2.api.pisearch.joshkeegan.co.uk/StringSearch.Api.dll
Restart=always
# Restart service after 10 seconds if the dotnet service crashes:
RestartSec=10
KillSignal=SIGINT
SyslogIdentifier=pisearch-api
User=pisearch
Environment=ASPNETCORE_ENVIRONMENT=Production

[Install]
WantedBy=multi-user.target

Then start the service & check its status:

service pisearch-api start
systemctl status pisearch-api.service