Pica8′s PicOS is a Linux network OS based on Debian. This makes it easy for our customers to integrate their own tools or applications within PicOS. We are compatible with all the leading DevOps tools, such as Puppet, Chef, and Salt; and of course, we support OpenFlow.
But what if you would like to have an application on the switch itself to manipulate its data path? This is beyond the standard DevOps model and is not aligned with the traditional OpenFlow model, which uses a centralized controller.
Typically the requirement for such an application would be:
- A switch using traditional L2/L3, as well as an API to override those L2/L3 forwarding decisions.
- The API could be called on the switch itself while the application is running on the switch (that requirement would forbid a centralized OpenFlow controller).
For this use case, most network equipment vendors have an SDK (Software Development Kit) to program native applications running directly on the switch. A good example would be the Arista EOSSdk.
One big issue with those SDKs is that they are “sticky.” Once you develop your application, it only runs on the SDK provided by your vendor, so you Continue reading
A variety of open projects target the network. This cheat sheet keeps track of who's doing what at OpenDaylight, OpenFlow, OVS, OpenStack, ONOS, and Open Compute.
The post The Open Networking Cheat Sheet appeared first on Packet Pushers.
Hi!
I have decided to migrate my blog from wordpress.com to a private environment. The main reasons being that I felt that I had outgrown the normal wordpress.com site. I wanted to be able to install plugins and get more accustomed to running my own environment. These days it can’t hurt picking up some Linux skills.
The other reason is that I haven’t made a dime on the blog, in fact since I’ve had to pay hosting costs I’ve been losing money on the blog every year. By placing some ads I hope I can make enough for the hosting and anything extra would help me in getting things I need to generate more content.
The blog should now be reachable over both v4 and v6 and have SSL enabled.
Please bear with me if you find any things that are broken. I have migrated the content but I’m sure things will pop up. If they do, please notify me.
/Daniel
Microsoff Azure wants a say in how switches operate.
NEC Director of Business Development Don Clark shares the latest SDN deployment lessons and guidelines in a special SDxCentral webinar based on the SDxCentral SDN Controller Report.
Fortinet-Cisco ACI integration uses SDN to reduce costs and improve service delivery in the cloud and in multitenant data centers.
In How Uber Scales Their Real-Time Market Platform one of the most intriguing hints was how Uber handles datacenter failovers using driver phones as an external distributed storage system for recovery.
Now we know a lot more about how that system works from Uber's Nikunj Aggarwal and Joshua Corbin, who gave a very interesting talk at the @Scale conference: How Uber Uses your Phone as a Backup Datacenter.
Rather than use a traditional backend replication scheme where databases sync state between datacenters to achieve a measure of k-safety, Uber did something different, what they do is store enough state on driver phones so that if a datacenter failover occurs trip information can not be lost on the failover.
Why choose this approach? The traditional approach would be much simpler. I think it is to make sure the customer always has a good customer experience and losing trip information for an active trip would make for a horrible customer experience.
By building their syncing strategy around the phone, even thought it's complicated and takes a lot work, Uber is able to preserve trip data and make for a seamless customer experience even on datacenter failures. And making the customer Continue reading
Many of the questions we frequently get are related to deploying applications and stacks into Amazon Web Services. Back in July, Ansible Government teamed up with partner DLT Solutions to host a webcast demonstrating the creation of a Red Hat stack in AWS entirely managed with Ansible. Watch it now and continue reading below for more information.
IT organizations look toward AWS for a number of reasons, but according to IDC, deploying applications in AWS results in a 64% lower TCO and 82% less downtime. Now let’s be honest. Who doesn’t like less downtime?
Red Hat is the leading Open Source provider for infrastructure and middleware solutions. Their industry-standard Red Hat Enterprise Linux and JBoss middleware are widely deployed in on-prem physical and virtual environments, and are the benchmark for stability, security, and performance.
But how can you leverage that power in AWS? With Ansible, it’s easy.
In the webcast, we demonstrate the deployment of a complete JAVA-based web application, including RHEL, JBOSS, and a load balancer. Once installed, we demonstrated how to use the same playbook that deployed the application to update the application. Better yet, these examples are available for you to start using and experimenting with today.
Here’s Continue reading
Friday afternoon, late, and the new system is finally up. Users are logged in, getting their work done, and you’ve just received an email from the CTO (your boss’ boss’ boss’ boss, probably), saying what a good job the team did in getting things up and running so quickly. For once, in fact, the system went in perfectly. There was no close to team breakups over which technology or vendor to use; there were very few unexpected items that crept into the budget, the delays were minimal, and you even learned a couple of new skills to top it all off.
Wonderful, right? The perfect unicorn project.
But before you break open that bottle of bubbly (or whatever cold beverage is your choice), or maybe pop up a bowl of popcorn and sit down to a long deserved break binge watching the shows you missed pulling this thing together, you need to ask one more question:
Did you strip and sand first? Or did you just paint right on top?
Or don’t you remember the time you tried to paint that old trailer that had been sitting in your back yard for ages? Sure, it was covered in rust, dirt, Continue reading
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