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pgAdmin Docker Environment Variables | An Introduction

Did you know that in a Docker environment, environment variables help configure and customize the behavior of containers at runtime?

When working with pgAdmin in a Docker environment, we can use environment variables to set various configuration options for pgAdmin. These environment variables let us control aspects like database connection details, authentication, logging, and more.

Environment Variables:

• PGADMIN_DEFAULT_EMAIL:

  This variable sets the default email address for the initial administrator account in pgAdmin. When we first launch the pgAdmin container, this email address will be used to create the admin user.
• PGADMIN_DEFAULT_PASSWORD:

  This sets the default password for the initial administrator account in pgAdmin.
• PGADMIN_LISTEN_PORT:

  This specifies the port on which pgAdmin will listen for incoming connections. By default, pgAdmin listens on port 80 within the container, but we can map this to a different port on the host system if needed.
• PGADMIN_SERVER_JSON_FILE:

  This lets us specify a JSON file with server definitions that will be imported into pgAdmin on startup. This is useful for pre-configuring server connections.
• PGADMIN_ENABLE_TLS:

  If this variable is left un-set, the container will listen on port 80 for connections in plain text. However, if set to any value, the container will listen on port 443 for TLS connections.
• PGADMIN_LISTEN_ADDRESS:

  This specifies the local address that the servers listens on. The default should work for most users – in IPv4-only environments, we have to set it to 127.0.0.1.
• PGADMIN_ENABLE_SESSION_EXPIRY:

  We can set it to “True” to enable session expiry or “False” to disable it.
• PGADMIN_LOG_FILE:

  This specifies the path to the log file where pgAdmin will write its log messages.
• PGADMIN_CONFIG_FILE:

  This specifies the path to a custom configuration file for pgAdmin.

When running a pgAdmin Docker container, we can set these environment variables via the -e or –env flags in the docker run command. Alternatively, we can define them in a Docker Compose file under the environment section of the pgAdmin service definition.

With environment variables, we can customize the behavior of pgAdmin in our Docker environment to suit our specific requirements.

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Conclusion

In brief, our Support Experts introduced us to pgAdmin Docker environment variables.