cloud-sim

Amazon S3 cloud simulator running on Apache

CSIM Apache Config

Server

Ubuntu Server 14.04 LTS- Ubuntu is one of the most common distros which many are already familiar. Using the Server version since X is not required for the sim and just gets in the way, also reduces resource requirements. This is an LTS release which means updates for at least 4 years.
Network based install
- OpenSSH Server
- LAMP - Linux, Apache, MySql, PHP
edit /etc/network/interfaces

upport@newsim:/etc/network$ cat interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.56.38
netmask 255.255.255.0
network 192.168.56.0
broadcast 192.168.56.255
gateway 192.168.56.2
dns-nameservers 192.168.56.254

Apache2

NOTE: Install the LAMP stack which should provide all the dependencies you need sudo apt-get install lamp-server^ Don't skip the ^ since this is a dummy package.

Enable SSL

a2enmod ssl Which essentially performs but is much simpler:
ln -s /etc/apache2/sites-available/default-ssl.conf /etc/apache2/sites-enabled/
ln -s /etc/apache2/mods-available/ssl* /etc/apache2/mods-enabled/
ln -s /etc/apache2/mods-available/socache_shmcb.load /etc/apache2/mods-enabled/ Create certificate
make-ssl-cert generate-default-snakeoil --force-overwrite

Setup MPM Edit /etc/apache2/mods-available/actions.conf and add the line: Action application/x-httpd-php /cgi-bin/php5 Install php5-cgi

apt-get install php5-cgi
a2enmod cgid

Miscellaneous Enable cURL required for Google

Not sure if this is needed since gAPI is b0rk
TODO - Fix PUT apache 500 error
apt-get install php5-curl libapache2-mod-php5 Disable Compression (deflate) Since we aren't running a real web-server, disable the 'deflate' mod to bypass the mime type rule checking. We shouldn't match any of the rules anyway.
a2dismod deflate Enable Server Status
a2enmod status Update the conf to allow access from any host:
Edit mods-available/status.conf
Edit the Location block as follows:

        <Location /server-status>
                SetHandler server-status
                Allow from all
                #Require local
                #Require ip 192.0.2.0/24
        </Location>

restart apache You can now access the server status via: http://{serverName}/server-status

Virtual Hosts and Rewrite We need to enable rewrite for GET methods else Apache tries to open/execute the files.

a2enmod rewrite
a2enmod actions Create new virtual hosts based on the default and default-ssl configs:
cd /etc/apache2/sites-available
cp 000-default.conf csim.conf
cp default-ssl.conf csim-ssl.conf Copy the csim binary to /var/www/cgi-bin Now, edit csim.conf and csim-ssl.conf:
Add the following at the beginning of the file below the <VirtualHost *> tag.

        ServerAdmin webmaster@localhost

        DocumentRoot /var/www/html
        <Directory /var/www/html>
            Options Indexes FollowsymLinks MultiViews ExecCGI
            AllowOverride None
            Order allow,deny
            Allow from all

            RewriteEngine On
            RewriteCond %{REQUEST_METHOD} GET
            RewriteRule ^(.*)$ $?dummy [L,NS]

            Script POST /cgi-bin/csim
            Script PUT /cgi-bin/csim
            Script GET /cgi-bin/csim
            #Script HEAD /cgi-bin/csim
            Script DELETE /cgi-bin/csim
        </Directory>

        ScriptAlias /cgi-bin/ /var/www/cgi-bin/
        <Directory "/var/www/cgi-bin">
            AllowOverride None
            Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
            Order allow,deny
            Allow from all
        </Directory>

        # Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
        # error, crit, alert, emerg.
        # It is also possible to configure the loglevel for particular
        # modules, e.g.
        LogLevel info ssl:warn rewrite:info 

        # Dont log normal access, saves a lot of IO on a cloudsim
        ErrorLog ${APACHE_LOG_DIR}/error_csim.log
        SetEnvIf Request_URI "\.(snp|jpg|xml|png|gif|ico|js|css|swf|js?.|css?.)$" DontLog
        CustomLog ${APACHE_LOG_DIR}/access_csim.log combined Env=!DontLog

Finally, enable the new sites:
a2ensite csim csim-ssl

Directory Structure

/var/www/html is the document root and contains all of the data.
The expectation is that each application will use a unique "bucket" and "path" which will keep their data separate.
- amazon - /var/www/html/{bucket}/{path}/
- atmos - /var/www/html/rest/namespace/{path}/
Copy the simulator binary files to /var/www/cgi-bin/
Restart apache with /etc/init.d/apache2 restart

neoreeps/s3-simulator

cloud-sim

CSIM Apache Config

Server

Apache2