DB setup

    [as postgres] 
    create user U with password 'Y'; 
    create database X with owner = U template = template0; 
    grant all privileges on database X to U; 
 
    [as pasteque user]
    \i res/database/postgresql/schema.sql

Configuration postgresql for dummies

edit /etc/postgresql/X.Y/main/pg_hba.conf

 local    all    all    peer

becomes

 local    all    postgres    peer\\
 local    all    all    md5

For crontask of pgdump:

edit /root/.pgpass (root:root 600)

 localhost:5432:<user>:<db>:<password>

Escape any : char with \:

Account creation

Use this snippet to generate passwords

<html dir="ltr" lang="en-US">
    <head>
        <meta charset="UTF-8" />
        <title>password_hash</title>
        <style type="text/css">
         pre { border: 1px solid #444; padding: 1ex; }
        </style>
    </head>
    <body>
        <h1>Password hash generator</h1>
        <form action="user_ini.php" method="POST" onsubmit="javascript:sendpwd();">
        <p>Enter password here</p>
        <p><input type="password" name="password" placeholder="password to hash" /></p>
        <p><input type="submit" value="send" /></p>
        </form>
        <h2>Your &lt;user&gt;_id.ini file</h2>
        <pre><?php
if (array_key_exists('password', $_POST)) {
    echo htmlspecialchars("password=" . password_hash($_POST['password'], PASSWORD_DEFAULT));
} else {
    echo "Empty, use the form above";
}?></pre>
        <h2>Server source code</h2>
             <p>This is the php code running this page and filling the &lt;user&gt;_id.ini block.</p>
        <pre>if (array_key_exists('password', $_POST)) {
    echo htmlspecialchars("password=" . password_hash($_POST['password'], PASSWORD_DEFAULT));
} else {
    echo "Empty, use the form above";
}</pre>
        <h2>Standalone script</h2>
        <p>Call with php-cli, enter the password twice, outputs the hash. Usage:</p>
        <pre>php hasher.php > login_id.ini</pre>
<pre>&lt;?php
if ($argc < 2) {
    system("stty -echo");
    $password = substr(fread(STDIN, 80), 0, -1);
    $password2 = substr(fread(STDIN, 80), 0, -1);
    system("stty echo");
    if ($password != $password2) {
        file_put_contents("php://stderr", "Password mismatch\n");
        die();
    }
} else {
    $password = $argv[1];
}
echo "password=" . password_hash($password, PASSWORD_DEFAULT);</pre>
    <body>
</html>

Put the output into auth/<ident>_id.ini and create an auth/<ident>_db.ini file following this scheme

type = postgresql
host = localhost
port = 5432
name = "pg_user"
user = "pg_db"
password = "pg_pwd"

Obviously, you need to change name, user and password parameters. You can either use mysql but it's not recommanded (in this case, obviously you need to change port to 3306)

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