Week 13 Updates

Hello Everyone,

Now I'm able to run the basic longevity test on the VMs development environment and currently working on the improvement features to the basic Longevity test suite. I have pushed two changes to the upstream, one of which has been merged.

I have also made a wiki page on this project "Longevity test for OpenDaylight". Please see the link to the wikipage here.

Though the internship period has ended, I'll still be working on this project as an active contributor of the OpenDaylight community.

Cheers,
Nitika

Week 11 and 12 Upates

Hello Everyone,

As I got the resources increased on one of the VMs (on which ODL controller is installed), I tried to run the longevity test suite, one of which finally passed. Firstly, I tried to run the test suite with two switches and one node link.

Also, I have been having a hard time last week due to which I was not able to concentrate on the project work. I had a discussion with the mentor on the further task and currently working on the improvement of the longevity test suite.

Please see the below mentioned things on which I'm currently working to improve the longevity test suite:

- Add a check for NullPointer exceptions.
- Check that the threads are not leaking.


Cheers,
Nitika Agarwal

Week 10 @Opendaylight Summit 2015

Hello Everyone,

Last week, I have been attending the OpenDaylight summit 2015. Thanks for providing the interns with an opportunity to meet the community and developers in person.

It was really a nice experience to meet my mentors and other developers. It was a great learning overall and learnt a lot after attending the Application Development tutorial sessions and other user tutorial sessions. In the Developer forum sessions, I learnt about other ODL projects as well and looking forward to work on other integration projects as well.

During the summit, we had two reception parties which provided us with an opportunity to meet with the community members. We also had an Intern / Mentor meeting in which we discuss our experience while working on the project. Overall, it was a great experience for me to attend the ODL summit.

Cheers,
Nitika Agarwal

Week 9 Updates

Hello Everyone,

I'm still awaiting for the response from the Spirent Labs to get the resources increased on one of the VMs (on which ODL controller is installed).

While working on resolving the issues and discussion with the mentor, I learnt many things like how to keep the controller running even after logout and how to start a clean controller. We can keep the controller running by executing the "bin/start" command instead of executing "bin/karaf" command. It will then go in the background and features can be installed either by doing "ssh -p 8101 karaf@localhost" to get a karaf console or by automatically loading through boot config file.

Last week, I was travelling to attend the OpenDaylight summit this week. Finally during the weekend, I got the response from the Spirent labs that the resources has been increased on one of the VMs (on which ODL controller is installed).

Cheers,
Nitika Agarwal

Week 8 Updates

Hello Everyone,

Moving ahead with the project work, I synced the longevity tests in my repository. As mentioned in my previous blog post. I'm still facing some issues while running the tests using pybot.

The next step was to see robot log files. For this, instead of making use of the remote desktop solution VNC, my mentor Jamo provided me with a good easy solution to view the robot logs via browser.
python -m simpleHTTPServer 80
The above command command just starts a simple web server through the directory you enter this command and then you can access the files in that folder via browser.

I digged deep into the logs to see the reason for the test failure. I also checked various ports on the controller VM. After going through the logs, I figured that the controller was not in the healthy state and mininet was not able to connect to the controller.

Moreover, there was a shortage of resources on the VM on which I have installed the ODL controller. So, I had requested for more resources on the particular VM (on which ODL controller is installed) need to be increased to 8 GB RAM and 4 cores VCPU.

Stay tuned for more updates..!!

Cheers,
Nitika Agarwal

Week 7 Updates

Hello Everyone,

Now I had my development environment setup on the VMs with the stable lithium version of the ODL controller installed.

• ODL controller (Lithium version) on Ubuntu VM
• Robot framework, RIDE, code pushing and pulling from upstream setup on another Ubuntu VM.
• Mininet installed on another Ubuntu VM

Since now the VMs are on public IP address, I can ssh to these VMs directly as well as through jumpbox server.

As I learnt how to run the test suite using pybot and the various flags / options used with pybot command for running the Longevity test suite, I started running the test to see if the test is passing on my development environment. 

But while running the test suite, I faced some issues and had discussion with the mentor on this. We tried to check various things on the above three VMs and ensured that the controller is running, mininet is connected to the controller, ports are open on the controller VM. 

Still working on to resolve the issue and run the test suite.

Cheers, 

Nitika Agarwal

Week 6 Updates

Hello Everyone, 

Finally, I got the VMs recreated now on public IP address. Glad about this. 

I again began setting up the development environment on the VM, started with the installation of helium version of the ODL controller on one of the VMs. 

Though, the resources on this VM is small, only 2GB RAM and 1 core VCPU, so we decided to install only one feature set ie. odl-openflowplugin-flow-services-ui. 

Now I'm able to access the URL http://199.188.118.102:8181/dlux/index.html for the DLUX service via the browser and able to login successfully with admin/admin. I could see the topology. I was even able to watch the CPU on this VM while the modules / features were getting loaded using top command.

On the other VMs, I have installed mininet and Robot framework separately. 

After that, I tested the installation of mininet. One issue faced on the VM in which I have installed Robot framework, I was not able to launch RIDE using terminal. Since, this is not important, as we'll be running our test suite using pybot, hence we ignored this thing.

The below command was used to run the Longevity test suite :

pybot -N 010__longevity.txt -c critical -e exclude -v BUNDLEFOLDER:distribution-karaf-0.2.3-Helium-SR3 -v WORKSPACE:/tmp -v NEXUSURL_PREFIX:http://nexus01.dfw.opendaylight.org:8081/nexus -v CONTROLLER:199.188.118.102 -v CONTROLLER_USER:root -v MININET:199.188.118.103 -v MININET1: -v MININET2: -v MININET_USER:root -v USER_HOME:/root /root/integration/test/csit/suites/openflowplugin/Longevity

After setting up the development environment, I tried to run the basic Longevity test suite but facing some issues due to which the test is failing. I'll have a discussion on this with Jamo this week.

Cheers,
Nitika

Week 4 and 5 Updates

Hello Everyone,

So, the network problem on the VMs was resolved. The issue was route was not setup properly on the VMs.

I had started working on the installation of ODL controller on one of the VMs but since the VMs are on private IP address, I'm not able to launch the DLUX service and access the DLUX API via browser. Even after able to use -i flag with the ssh command, I'm not able to launch the browser from the terminal.

On the second VM, I have installed mininet and robot framework required for running and creating the test suite and pushing the code to the upstream.

I had a discussion with the mentor regarding the steps to be followed for the installation of ODL controller and setting up the development environment. After the discussion, I had installed mininet and robot framework separately on the VMs.

After installing the ODL controller, I played around with the karaf console, installing new features, listing features.

Unfortunately, a bad thing happened. Accidentally, my VMs were deleted by someone in the Spirent Labs and I lost access to the VMs and the development environment setup. I got stuck for sometime till I get my VMs recreated again.

Meanwhile, I'm planning to go through the wiki pages and other tools on my system.

Cheers,
Nitika

Week 3 Updates

Hello Everyone,

I'm here in the third week of the ODL internship program and by now, I have got completely familiar with the various tools (RIDE robot framework, mininet, robot code). I also got myself acquainted with robot python libraries.

I tried to understand the basic longevity test suite, to discuss with my mentor in the weekly meeting. I have installed Mininet on my system and played around with it.

Though I got access to the VMs last week, but I'm not able to install any package on the system nor able to execute the update command on the system due to firewall issue or route not setup properly on the VMs. I have dropped an email to the Spirent labs regarding this issue and will update you more on the project work in the next week.

Stay tuned for more updates....!!


Cheers,
Nitika

Week 1 and 2 Updates

Hello Everyone, 

For the past two weeks, I have been working to become completely familiar with the various tools and applications to be used in this project. Now, I have got familiar working with RIDE, reading and writing robot code and mininet. I have also gone through the basic Longevity test written by Jamo, my mentor.

I'm still waiting to hear from the Spirent labs to get access to the VMs to start working on the installation of ODL controller and setting up the development environment.

In the last week, I also got familiar on generating API requests using POSTMAN. By now, I have gone through almost all of the basic wikipages of OpenDaylight, installing and running ODL, robot framework RIDE, mininet and robot python libraries, mentioned here.

Cheers,
Nitika

Entering into the world of SDN..!!

Hello Everyone!

My internship officially began this week. I'm really excited to work with the OpenDaylight community. For the next few weeks, I'm planning to become more familiar with the various tools and applications that will be used in this project.

Firstly, I have gone through the wikipages present on how to install and setup OpenDaylight on the VMs. I had an initial discussion with the mentor regarding the project workflow and timeline. I was informed to work on the stable helium version of the OpenDaylight controller which can be downloaded from here. 

Due to limited resources on my system, I have already requested for access to the VMs to work on this project and had to wait for them to get started and work on installing the ODL controller and setting up the development environment.

Meanwhile, I cloned the integration repository and started looking into the test suites, written using Robot code. I have installed RIDE i.e. Robot Framework Test Data Editor on my system and started playing around with it. Also, I have started looking into the syntax for writing robot code.

Cheers,
Nitika

Glad for being selected for ODL Summer 2015 Intern Program

Hello Everyone !

My name is Nitika, currently pursuing bachelor's in Computer Engineering from India. Being an enthusiast Open Source Software developer and having keen interest in SDN and Networking, I had applied for the OpenDaylight Summer 2015 Intern Program. My happiness knew no bound on the much awaited announcement of OpenDaylight Summer 2015 Intern Program results and I was elated to see my name being selected. 

I'm glad to inform you all that I’ll be a part of the OpenDaylight community and will be working on the project Longevity test for OpenDaylight under the guidance of mentors, JamO Luhrsen and Luis Gomez. 

The goal of this project is to create a single automation test suite that should be flexible enough to work in different environments. As today almost all of the ODL tests run in Continuous Integration environment, and do not take more than around ~20 minutes of duration to pass, there is a requirement of a longevity test that should be able to run for few hours or days to measure the performance and stability of the controller. The longevity test should be able to exercise the OpenDaylight and while exercising, the user should be able to perform periodic validations.

Looking forward to a great period of coding and fun…!!

Stay tuned for more updates...!!!