cs655-mini-project

BU CS 655 Networking GENI Mini Project

Correction

In 3.1 of the report we submit in the GradeScope, we mistakenly write old commands that are used to test connectivity.
Actually, we use an 87MB video to test the performance, and we use the following commands:

Set up the environment

Install & Run Apache2 in the source server

Login in the source server

ssh [your_username]@[your_source_server_ip]

Update apt-get

sudo apt-get update

Install apache2

sudo apt-get install apache2

Run apache2

sudo service apache2

Install & Run Apache Traffic Server in the cache server

Login in the cache server

ssh [your_username]@[your_cache_server_ip]

Update apt-get

sudo apt-get update

Install ATS

sudo apt-get install trafficservice

Modify records.config to open reverse_proxy & cache

cd /etc/trafficservice
sudo vim records.config

Within the records.config configuration file, ensure that the following settings have been configured as shown below:

CONFIG proxy.config.http.cache.http INT 1
CONFIG proxy.config.reverse_proxy.enabled INT 1
CONFIG proxy.config.url_remap.remap_required INT 1
CONFIG proxy.config.url_remap.pristine_host_hdr INT 1
CONFIG proxy.config.http.server_ports STRING 80 80:ipv6

Modify remap.config

sudo vim remap.config

Add the following rule to the remap.config

map http://[your_cache_server_ip]/cache/ http://{cache}
map http://[your_cache_server_ip]/ http://[your_source_sever_ip]

Run ATS

sudo service trafficserver start

Add max-age in http objects sent by the source server

Login in the source server

ssh [your_username]@[your_source_server_ip]

Open headers_module

sudo a2enmod headers

Modify apache2.conf

cd /etc/apache2
sudo vim apache2.conf

Add the following content to apache2.conf:

<FilesMatch "\.(htm|html|ico|pdf|flv|jpg|jpeg|png|gif|woff|js|css|swf)$">
        Header set Cache-Control "max-age=600"
</FilesMatch>

Restart apache2

sudo service apache2 restart

Add expires in http objects sent by the source server

Login in the source server

ssh [your_username]@[your_source_server_ip]

Open expires_module

sudo a2enmod expires

Modify apache2.conf

cd /etc/apache2
sudo vim apache2.conf

Add the following content to apache2.conf:

<FilesMatch "\.(htm|html|ico|pdf|flv|jpg|jpeg|png|gif|woff|js|css|swf)$">
        ExpiresActive on
        ExpiresDefault "access plus 10 minutes"
</FilesMatch>

Restart apache2

sudo service apache2 restart

Do the experiment

Check the objects in the cache server:

After setting up ATS, you can go to this link below:

[your_cache_server_ip]/cache/

Send a request to the cache server:

curl [your_cache_server_ip]/[filename]

Get the response time:

curl -o [filename] -w 'Total: %{time_total}s\n' [your_cache_server_ip]/[filename]

show detailed information of the response

curl -i -s [your_cache_server_ip]/[filename]