Serve php RESTful server with apache2 (ubuntu) - php

Question

I have a ubuntu machine on which I want to run a php rest server. Here is my default config file:
ServerName localhost
<VirtualHost *:80>
DocumentRoot /var/www/html/otherSite
ServerName www.vlio20_paka.com
Alias /otherSite /var/www/html/otherSite
</VirtualHost>
<VirtualHost *:80>
DocumentRoot /var/www/lbserver/public
ServerName www.vlio20_lb.com
Alias /lbServer /var/www/lbserver/public
<Directory /var/www/lbserver/public>
AllowOverride all
DirectoryIndex index.php
Require all granted
</Directory>
</VirtualHost>
In my public directory I have .htaccess file:
<IfModule mod_rewrite.c>
<IfModule mod_negotiation.c>
Options -MultiViews
</IfModule>
RewriteEngine On
# Redirect Trailing Slashes...
RewriteRule ^(.*)/$ /$1 [L,R=301]
# Handle Front Controller...
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ index.php [L]
</IfModule>
When I try to access the server http://MACHINE_IP/lbServer
I am getting Not Found error.
How can I make it work
(I am doing apache restart after each change in the config file)?
Update:
apache2 -t produced:
[Sun Jun 28 12:00:00.789522 2015] [core:warn] [pid 22089] AH00111: Config variable ${APACHE_LOCK_DIR} is not defined
[Sun Jun 28 12:00:00.789835 2015] [core:warn] [pid 22089] AH00111: Config variable ${APACHE_PID_FILE} is not defined
[Sun Jun 28 12:00:00.789970 2015] [core:warn] [pid 22089] AH00111: Config variable ${APACHE_RUN_USER} is not defined
[Sun Jun 28 12:00:00.790088 2015] [core:warn] [pid 22089] AH00111: Config variable ${APACHE_RUN_GROUP} is not defined
[Sun Jun 28 12:00:00.790240 2015] [core:warn] [pid 22089] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
[Sun Jun 28 12:00:00.794721 2015] [core:warn] [pid 22089:tid 140102153521024] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
[Sun Jun 28 12:00:00.795136 2015] [core:warn] [pid 22089:tid 140102153521024] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
[Sun Jun 28 12:00:00.795200 2015] [core:warn] [pid 22089:tid 140102153521024] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
AH00526: Syntax error on line 74 of /etc/apache2/apache2.conf:
Invalid Mutex directory in argument file:${APACHE_LOCK_DIR}
note: the first site is loading fine but the second gives a 404 error.

Answer 1

First this as almost nothing to do with a REST problem. It is a simple configuration error.
Second, for apache2 -t you should run . /etc/apache2/envvars before, because you need some envs variables loaded.
Then the configuration problem.
Your are defining 2 named based Virtualhosts, 1 with the name www.vlio20_paka.com and one with the name www.vlio20_lb.com. The first one is defined first, so if you use an unknown name it will be used, by default.
When you make a query this way:
http://MACHINE_IP/lbServer
the Host header used in your HTTP query is MACHINE_IP, so it's not www.vlio20_paka.com and not www.vlio20_lb.com. If you have no other default virtualhost (something you would find using apache2 -S) the first one will be used.
Let's have a look at the first one:
<VirtualHost *:80>
DocumentRoot /var/www/html/otherSite
ServerName www.vlio20_paka.com
Alias /otherSite /var/www/html/otherSite
</VirtualHost>
If we fall here the path searched on your disk will be DocumentRoot+url, so /var/www/html/otherSite/lbServer. You have a 404, chances are this path does not exists.
Note that your Alias instructions here simply tells Apache that a request to http://www.vlio20_paka.com/ and a request to http://www.vlio20_paka.com/otherSite would both point to the /var/www/html/otherSite/ directory, maybe not what you wanted to do.
Alias is simply a way to define some sort of url symlinks on the url-to-filesystem maps.
Let's now look the second VirtualHost, that you can only reach if you use the right name in your HTTP request, that is not requesting http://MACHINE_IP/lbServer but http://www.vlio20_lb.com/lbServer (for that you could an entry in your /etc/hosts file, on the machine running the http query).
<VirtualHost *:80>
DocumentRoot /var/www/lbserver/public
ServerName www.vlio20_lb.com
Alias /lbServer /var/www/lbserver/public
<Directory /var/www/lbserver/public>
AllowOverride all
DirectoryIndex index.php
Require all granted
</Directory>
</VirtualHost>
So here you set a DocumentRoot at /var/www/lbserver/public but also, via Alias, you tell Apache that a request to http://www.vlio20_lb.com/lbServer/ point to the same entry as http://www.vlio20_lb.com/.
Your best fix would be to add an entry in /etc/hosts a request your test websites with real names, so that you can use Name based VirtualHosting. Or use only one VirtualHost and try things with aliases, but that's usually far from the production settings.

Answer 2

The only thing I think of without seeing more of your config.
Change:
<Directory /lbserver>
DirectoryIndex index.php
</Directory>
To:
<Directory /lbserver>
DirectoryIndex index.php
Require all granted
</Directory>

Answer 3

In ubuntu there is no binary httpd, apache2 used instead:
ricardo#zeus:~$ httpd -t
No se ha encontrado la orden «httpd», quizás quiso decir:
La orden «xttpd» del paquete «xtide» (universe)
La orden «https» del paquete «httpie» (universe)
La orden «http» del paquete «httpie» (universe)
httpd: no se encontró la orden
ricardo#zeus:~$ apache2 -t
Now , paste the command output ;-)