Hi Cole,
If I delete all Directory and DocumentRoot settings, I get this error message:

Now my conf code looks like this:
#
# This is the main Apache HTTP server configuration file. It contains the
# configuration directives that give the server its instructions.
# See <URL:http://httpd.apache.org/docs/2.4/> for detailed information.
# In particular, see
# <URL:http://httpd.apache.org/docs/2.4/mod/directives.html>
# for a discussion of each configuration directive.
#
# Do NOT simply read the instructions in here without understanding
# what they do. They're here only as hints or reminders. If you are unsure
# consult the online docs. You have been warned.
#
# Configuration and logfile names: If the filenames you specify for many
# of the server's control files begin with "/" (or "drive:/" for Win32), the
# server will use that explicit path. If the filenames do *not* begin
# with "/", the value of ServerRoot is prepended -- so 'log/access_log'
# with ServerRoot set to '/www' will be interpreted by the
# server as '/www/log/access_log', where as '/log/access_log' will be
# interpreted as '/log/access_log'.
#
# ServerRoot: The top of the directory tree under which the server's
# configuration, error, and log files are kept.
#
# Do not add a slash at the end of the directory path. If you point
# ServerRoot at a non-local disk, be sure to specify a local disk on the
# Mutex directive, if file-based mutexes are used. If you wish to share the
# same ServerRoot for multiple httpd daemons, you will need to change at
# least PidFile.
#
ServerRoot "/etc/httpd"
#
# Listen: Allows you to bind Apache to specific IP addresses and/or
# ports, instead of the default. See also the <VirtualHost>
# directive.
#
# Change this to Listen on specific IP addresses as shown below to
# prevent Apache from glomming onto all bound IP addresses.
#
#Listen 12.34.56.78:80
Listen 80
#
# Dynamic Shared Object (DSO) Support
#
# To be able to use the functionality of a module which was built as a DSO you
# have to place corresponding `LoadModule' lines at this location so the
# directives contained in it are actually available _before_ they are used.
# Statically compiled modules (those listed by `httpd -l') do not need
# to be loaded here.
#
# Example:
# LoadModule foo_module modules/mod_foo.so
#
#SJ: meti como comentário porque parecia ser preciso mas afinal recebo aviso a dizer que já é carregado:
#LoadModule authz_core_module modules/mod_authz_core.so
Include conf.modules.d/*.conf
#
# If you wish httpd to run as a different user or group, you must run
# httpd as root initially and it will switch.
#
# User/Group: The name (or #number) of the user/group to run httpd as.
# It is usually good practice to create a dedicated user and group for
# running httpd, as with most system services.
#
#SJ: adicionei o silvano ao grupo apache e mudei o user aqui para silvano, mas continuou a dar erro.
User apache
Group apache
# 'Main' server configuration
#
# The directives in this section set up the values used by the 'main'
# server, which responds to any requests that aren't handled by a
# <VirtualHost> definition. These values also provide defaults for
# any <VirtualHost> containers you may define later in the file.
#
# All of these directives may appear inside <VirtualHost> containers,
# in which case these default settings will be overridden for the
# virtual host being defined.
#
#
# ServerAdmin: Your address, where problems with the server should be
# e-mailed. This address appears on some server-generated pages, such
# as error documents. e.g. admin@your-domain.com
#
ServerAdmin root@localhost
#
# ServerName gives the name and port that the server uses to identify itself.
# This can often be determined automatically, but we recommend you specify
# it explicitly to prevent problems during startup.
#
# If your host doesn't have a registered DNS name, enter its IP address here.
#
#ServerName www.example.com:80
#
# Deny access to the entirety of your server's filesystem. You must
# explicitly permit access to web content directories in other
# <Directory> blocks below.
#
#
# Note that from this point forward you must specifically allow
# particular features to be enabled - so if something's not working as
# you might expect, make sure that you have specifically enabled it
# below.
#
#
# DocumentRoot: The directory out of which you will serve your
# documents. By default, all requests are taken from this directory, but
# symbolic links and aliases may be used to point to other locations.
#
#
# Relax access to content within /var/www.
#
# Further relax access to the default document root:
#
# DirectoryIndex: sets the file that Apache will serve if a directory
# is requested.
#
<IfModule dir_module>
DirectoryIndex index.html
</IfModule>
#
# The following lines prevent .htaccess and .htpasswd files from being
# viewed by Web clients.
#
<Files ".ht*">
Require all denied
</Files>
#
# ErrorLog: The location of the error log file.
# If you do not specify an ErrorLog directive within a <VirtualHost>
# container, error messages relating to that virtual host will be
# logged here. If you *do* define an error logfile for a <VirtualHost>
# container, that host's errors will be logged there and not here.
#
ErrorLog "logs/error_log"
#
# LogLevel: Control the number of messages logged to the error_log.
# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
#
LogLevel warn
<IfModule log_config_module>
#
# The following directives define some format nicknames for use with
# a CustomLog directive (see below).
#
LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
LogFormat "%h %l %u %t \"%r\" %>s %b" common
<IfModule logio_module>
# You need to enable mod_logio.c to use %I and %O
LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio
</IfModule>
#
# The location and format of the access logfile (Common Logfile Format).
# If you do not define any access logfiles within a <VirtualHost>
# container, they will be logged here. Contrariwise, if you *do*
# define per-<VirtualHost> access logfiles, transactions will be
# logged therein and *not* in this file.
#
#CustomLog "logs/access_log" common
#
# If you prefer a logfile with access, agent, and referer information
# (Combined Logfile Format) you can use the following directive.
#
CustomLog "logs/access_log" combined
</IfModule>
<IfModule alias_module>
#
# Redirect: Allows you to tell clients about documents that used to
# exist in your server's namespace, but do not anymore. The client
# will make a new request for the document at its new location.
# Example:
# Redirect permanent /foo http://www.example.com/bar
#
# Alias: Maps web paths into filesystem paths and is used to
# access content that does not live under the DocumentRoot.
# Example:
# Alias /webpath /full/filesystem/path
#
# If you include a trailing / on /webpath then the server will
# require it to be present in the URL. You will also likely
# need to provide a <Directory> section to allow access to
# the filesystem path.
#
# ScriptAlias: This controls which directories contain server scripts.
# ScriptAliases are essentially the same as Aliases, except that
# documents in the target directory are treated as applications and
# run by the server when requested rather than as documents sent to the
# client. The same rules about trailing "/" apply to ScriptAlias
# directives as to Alias.
#
ScriptAlias /cgi-bin/ "/var/www/cgi-bin/"
</IfModule>
#
# "/var/www/cgi-bin" should be changed to whatever your ScriptAliased
# CGI directory exists, if you have that configured.
#
<IfModule mime_module>
#
# TypesConfig points to the file containing the list of mappings from
# filename extension to MIME-type.
#
TypesConfig /etc/mime.types
#
# AddType allows you to add to or override the MIME configuration
# file specified in TypesConfig for specific file types.
#
#AddType application/x-gzip .tgz
#
# AddEncoding allows you to have certain browsers uncompress
# information on the fly. Note: Not all browsers support this.
#
#AddEncoding x-compress .Z
#AddEncoding x-gzip .gz .tgz
#
# If the AddEncoding directives above are commented-out, then you
# probably should define those extensions to indicate media types:
#
AddType application/x-compress .Z
AddType application/x-gzip .gz .tgz
#
# AddHandler allows you to map certain file extensions to "handlers":
# actions unrelated to filetype. These can be either built into the server
# or added with the Action directive (see below)
#
# To use CGI scripts outside of ScriptAliased directories:
# (You will also need to add "ExecCGI" to the "Options" directive.)
#
#AddHandler cgi-script .cgi
# For type maps (negotiated resources):
#AddHandler type-map var
#
# Filters allow you to process content before it is sent to the client.
#
# To parse .shtml files for server-side includes (SSI):
# (You will also need to add "Includes" to the "Options" directive.)
#
AddType text/html .shtml
AddOutputFilter INCLUDES .shtml
</IfModule>
#
# Specify a default charset for all content served; this enables
# interpretation of all content as UTF-8 by default. To use the
# default browser choice (ISO-8859-1), or to allow the META tags
# in HTML content to override this choice, comment out this
# directive:
#
AddDefaultCharset UTF-8
<IfModule mime_magic_module>
#
# The mod_mime_magic module allows the server to use various hints from the
# contents of the file itself to determine its type. The MIMEMagicFile
# directive tells the module where the hint definitions are located.
#
MIMEMagicFile conf/magic
</IfModule>
#
# Customizable error responses come in three flavors:
# 1) plain text 2) local redirects 3) external redirects
#
# Some examples:
#ErrorDocument 500 "The server made a boo boo."
#ErrorDocument 404 /missing.html
#ErrorDocument 404 "/cgi-bin/missing_handler.pl"
#ErrorDocument 402 http://www.example.com/subscription_info.html
#
#
# EnableMMAP and EnableSendfile: On systems that support it,
# memory-mapping or the sendfile syscall may be used to deliver
# files. This usually improves server performance, but must
# be turned off when serving from networked-mounted
# filesystems or if support for these functions is otherwise
# broken on your system.
# Defaults if commented: EnableMMAP On, EnableSendfile Off
#
#EnableMMAP off
EnableSendfile on
# Supplemental configuration
#
# Load config files in the "/etc/httpd/conf.d" directory, if any.
IncludeOptional conf.d/*.conf
Output for curl -i http://localhost:80/rstudio
HTTP/1.1 301 Moved Permanently
Date: Wed, 30 Jan 2019 08:24:39 GMT
Server: Apache/2.4.37 (Amazon) OpenSSL/1.0.2k-fips
Location: http://localhost/rstudio/
Content-Length: 233
Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>301 Moved Permanently</title>
</head><body>
<h1>Moved Permanently</h1>
<p>The document has moved <a href="http://localhost/rstudio/">here</a>.</p>
</body></html>
Output for curl -i http://localhost:80/rstudio/
HTTP/1.1 302 Moved Temporarily
Date: Wed, 30 Jan 2019 08:25:50 GMT
Server: RStudio
Content-Type: text/html; charset=UTF-8
Content-Length: 60
Location: http://localhost/rstudio/unsupported_browser.htm
http://localhost:8787/unsupported_browser.htm[ec2-user@ip-10-0-0-244 ~]
Output for curl -i http://localhost:80/rstudio/auth-sign-in
HTTP/1.1 200 OK
Date: Wed, 30 Jan 2019 08:26:53 GMT
Server: RStudio
X-Frame-Options: DENY
Content-Type: text/html; charset=UTF-8
Content-Length: 6220
Set-Cookie: user-id=; expires=Mon, 28-Jan-2019 23:59:59 GMT; path=/; HttpOnly
<!DOCTYPE html>
<!--
#
# encrypted-sign-in.htm
#
# Copyright (C) 2009-12 by RStudio, Inc.
#
# This program is licensed to you under the terms of version 3 of the
# GNU Affero General Public License. This program is distributed WITHOUT
# ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
# MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
# AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
#
-->
<html>
<head>
<title>RStudio Sign In</title>
<link rel="shortcut icon" href="images/favicon.ico" />
<script language='javascript'>
function verifyMe()
{
if(document.getElementById('username').value=='')
{
alert('You must enter a username');
document.getElementById('username').focus();
return false;
}
if(document.getElementById('password').value=='')
{
alert('You must enter a password');
document.getElementById('password').focus();
return false;
}
return true;
}
</script>
<link rel="stylesheet" href="rstudio.css" type="text/css"/>
<style type="text/css">
body, td {
font-size: 12px;
}
#caption {
text-align: center;
font-size: 14px;
margin-right: 0;
width: 100%;
}
input[type=text], input[type=password] {
width: 262px;
border: 1px solid #aaa;
font-size: 14px;
padding: 3px;
-moz-border-radius: 4px;
-webkit-border-radius: 4px;
outline: none;
}
#buttonpanel {
text-align: center;
margin-top: 12px;
}
#errorpanel {
text-align: center;
padding: 0 25% 0 25%;
color: red;
display: none;
font-weight: bold;
}
button.fancy {
padding: 0;
border: 0 none;
margin: 0;
outline: none;
cursor: pointer;
background-color: white;
}
button.fancy .left {
width: 11px;
height: 35px;
background: url(images/buttonLeft.png) center right no-repeat;
}
button.fancy .inner {
color: white;
font-weight: bold;
font-size: 13px;
background: url(images/buttonTile.png) center repeat-x;
height: 35px;
padding: 5px;
padding-top: 1px;
}
button.fancy .right {
width: 11px;
height: 35px;
background: url(images/buttonRight.png) center left no-repeat;
}
</style>
<script type="text/javascript" src="js/encrypt.min.js"></script>
<script type="text/javascript">
function prepare() {
if (!verifyMe())
return false;
try {
var payload = document.getElementById('username').value + "\n" +
document.getElementById('password').value;
var xhr = new XMLHttpRequest();
xhr.open("GET", "auth-public-key", true);
xhr.onreadystatechange = function() {
try {
if (xhr.readyState == 4) {
if (xhr.status != 200) {
var errorMessage;
if (xhr.status == 0)
errorMessage = "Error: Could not reach server--check your internet connection";
else
errorMessage = "Error: " + xhr.statusText;
var errorDiv = document.getElementById('errorpanel');
errorDiv.innerHTML = '';
var errorp = document.createElement('p');
errorDiv.appendChild(errorp);
if (typeof(errorp.innerText) == 'undefined')
errorp.textContent = errorMessage;
else
errorp.innerText = errorMessage;
errorDiv.style.display = 'block';
}
else {
var response = xhr.responseText;
var chunks = response.split(':', 2);
var exp = chunks[0];
var mod = chunks[1];
var encrypted = encrypt(payload, exp, mod);
document.getElementById('persist').value = document.getElementById('staySignedIn').checked ? "1" : "0";
document.getElementById('package').value = encrypted;
document.getElementById('clientPath').value = window.location.pathname;
document.realform.submit();
}
}
} catch (exception) {
alert("Error: " + exception);
}
};
xhr.send(null);
} catch (exception) {
alert("Error: " + exception);
}
}
function submitRealForm() {
if (prepare())
document.realform.submit();
}
</script>
</head>
<h3 id="banner"><a href="http://www.rstudio.com"><img src="images/rstudio.png" width="78" height="24" title="RStudio"/></a></h3>
<div id="errorpanel">
<p>Error: </p>
</div>
<form method="POST" action="javascript:void" onsubmit="submitRealForm();return false">
<table id="border" align="center">
<tr>
<td>
<h2 id="caption">Sign in to RStudio</h2>
<p>
<label for="username">Username:</label><br />
<input type='text'
name='username'
value=''
id='username'
size='45'/><br />
</p>
<p>
<label for="password">Password:</label><br />
<input type='password'
name='password'
value=''
id='password'
size='45'
autocomplete='off' /><br />
</p>
<p style="display: block;">
<input type="checkbox" name="staySignedIn" id="staySignedIn" value="1"/>
<label for="staySignedIn">Stay signed in</label>
</p>
<input type="hidden" name="appUri" value=""/>
<div id="buttonpanel"><button class="fancy" type="submit"><table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="left"></td>
<td class="inner" valign="middle">Sign In</td>
<td class="right"></td>
</tr>
</table></button></div>
</td>
</tr>
</table>
</form>
<form action="auth-do-sign-in" name="realform" method="POST">
<input type="hidden" name="persist" id="persist" value=""/>
<input type="hidden" name="appUri" value=""/>
<input type="hidden" name="clientPath" id="clientPath" value=""/>
<input id="package" type="hidden" name="v" value=""/>
</form>
<div id="login-html">
</div>
<script type="text/javascript">
document.getElementById('username').focus();
</script>
</body>
</html>