Configuring the backend
Commento's backend is configured by a set of environment variables. If you're running Commento with Docker Compose, you can do this with the
environment: keyword as shown here. If you prefer plain Docker, the
-e flag sets environment variables, as shown here. If you're executing the binary from the command line, you can set environment variables:
$ export COMMENTO_ORIGIN=commento.example.com $ ./commento-ce
You can also configure Commento using a configuration file specified with
COMMENTO_CONFIG_FILE. You can find specifications for this file in the section on configuration files.
Here is the list of backend configuration settings available.
||This should be set to the subdomain or the IP address hosting Commento. All API requests will go to this server. Required.|
||A PostgreSQL server URI, including the database name. Required.|
||A configuration file for Commento. See the section on the configuration file for more details. Useful to store secrets and credentials. Optional, defaults to no file.|
||The address to bind the Commento server to. Optional, defaults to 127.0.0.1.|
||The port to bind the Commento server to. Optional, defaults to 8080.|
||If you want to use a CDN with Commento (like AWS Cloudfront, for example) for faster delivery of assets, you can. All static assets will be served from this domain. Optional, defaults to using
||If you want to forbid the creation of new owners who can set up domains, set this variable to
||If you want to store the binary in a different directory from the static assets, set this directory to point to the static assets (HTML, JS, CSS, email templates and database migrations). Optional, defaults to the same directory as the binary.|
||If set to true, all static content will be served GZipped. If you're not using something like a reverse proxy (like nginx, for example), we recommend you set this to
||SMTP credentials and configuration for the server should use to send emails. Optional, defaults to emails disabled.|
||Google OAuth v2 credentials that you get from their developers portal. Optional, defaults to Google login disabled.|
Precedence of configuration files
If you're specifying a configuration file using
COMMENTO_CONFIG_FILE, note that it will have lower precedence than environment variables.
For example, if you specify the port to be
4000 in your configuration file, and you also set the
COMMENTO_PORT=5000 environment variable, Commento will use
5000 as the port to bind the server to.
When in Docker
If you're running Commento Dockerised, you don't need to change
COMMENTO_PORT. Instead set the external bind address and port with the
-p flag in Docker.
-p commento.example.com:9000:8080 will bind Commento to
commento.example.com on port
COMMENTO_CONFIG_FILE environment variable, you can specify a configuration file. You can use this file to store secrets and credentials without exposing them in the
./commento-ce invocation command. For example, a Docker secret can be created and mounted inside the container's filesystem, and Commento can read from this file.
The format for the configutation file is quite simple:
- Each configuration value is specified in one line
- Leading and trailing whitespaces on each line are ignored
- All lines starting with a
#are treated as comments and ignored
- All empty lines are ignored
- Each valid configuration line must contain an
Here is an example file:
# Set binding values COMMENTO_ORIGIN=http://commento.example.com COMMENTO_PORT=80 # Set PostgreSQL settings COMMENTO_POSTGRES=postgres://commento:firstname.lastname@example.org:5432/commento?sslmode=disable # Set the SMTP credentials COMMENTO_SMTP_USERNAME=apikey COMMENTO_SMTP_PASSWORD=SG.ZXhwb3J0IENPTU1FTlRP.V4cG9ydCBDT01UT19TTV_Geks1RFQ0ZUhoNXFdjlnL COMMENTO_SMTP_HOST=smtp.sendgrid.net COMMENTO_SMTP_PORT=587 COMMENTO_SMTP_FROM_ADDRESSemail@example.com # Set Google OAuth credentials COMMENTO_GOOGLE_KEY=204475040454-chmuz29vz2xldxnlcmnvbnrlbn.apps.googleusercontent.com COMMENTO_GOOGLE_SECRET=09HTEVfU0VDUkVUPTh4
Say we store this file in
/etc/commento_config. Then, we can include this file when running Commento:
$ export COMMENTO_CONFIG_FILE=/etc/commento_config $ ./commento-ce