postgres1 is not in the sudoers file. This incident will be reported.

The error message "postgres1 is not in the sudoers file" occurs when a user attempts to execute a command as the root or superuser, usually through the `sudo` command in Linux or Unix-based systems, using the `postgres1` user account. `sudoers` is a configuration file that defines which users are allowed to use `sudo` and under what conditions.

In this case, it means that the `postgres1` user does not have the necessary permissions to run commands with administrative privileges by default. To resolve this issue, you need to:

1. Edit the `sudoers` file: Use an editor like `visudo` (or `sudo visudo`) to open the `sudoers` file, typically located at `/etc/sudoers`.

2. Add or modify the entry for `postgres1`: Add a line that grants sudo access to the `postgres1` user, following the syntax rules in the `sudoers` file. For example:

postgres1 ALL=(ALL) NOPASSWD: ALL

This line allows `postgres1` to run any command without needing a password.

3. Save and exit the editor: Remember to save your changes and close the editor without forgetting to confirm the permissions.

4. Test the new permission: After updating the `sudoers` file, try running a command with `sudo` again, and if everything is set up correctly, you should no longer receive the error message.

Please note that making changes to the `sudoers` file requires caution as incorrect permissions can lead to security vulnerabilities. Make sure to test and understand the implications before applying any changes.