Generally speaking, when launching instances in a cloud environment (such as AWS or an OpenStack-based cloud), the preferred/default way of accessing that instance is via SSH using an injected SSH key pair. There are times, though, when—for whatever reason—this approach won’t work. (I’ll describe one such situation below.) In such instances, it’s possible to configure cloud-init, the same tool used to inject SSH keys, to change passwords for user accounts. Here’s how.
Please note that this is a total hack. (Do NOT use this for any sort of production workload!) That being said, sometimes things like this are necessary to complete preliminary evaluations of a new technology, new product, or new architecture. In my case, I had a demo environment (using DevStack) that I needed to get up and running, and the instances would not have any external connectivity. This meant I was limited to console access only—hence, SSH keys are useless. The only means of access would be via password login through the console. So, I found this snippet of cloud-init code:
#cloud-config
chpasswd:
list: |
user1:password1
user2:password2
user3:password3
expire: False
For this particular use case, I needed to change the default user on the Ubuntu Continue reading
This is a liveblog of the opening keynote at the inaugural Kubernetes conference, Kubecon, taking place this week at the Palace Hotel in San Francisco. Brendan Burns, Senior Staff Software Engineer at Google, is delivering the opening keynote. Burns is a co-founder of the Kubernetes project.
Burns starts out with a quick review of a bit of Kubernetes history, and reviews the broad diversity of submitters that are participating in the development of Kubernetes. He doesn’t spend much time there, though, and quickly transitions into a “where are we going?” discussion.
He says that Kubernetes wasn’t really about containers, or scheduling; it was really about making reliable, scalable, agile distributed systems a CS101 exercise. Kubernetes is really about making it easier to build distributed systems, to scale distributed systems, to update distributed systems, and to make distributed systems more reliable. Burns demonstrates how Kubernetes makes this easier by showing a recorded demo of scaling Nginx web servers up to handle 1 million requests per second, and then updating the Nginx application while still under load.
After the demo completes, Burns takes a few minutes to break down the architecture behind the demonstration. “Loadbots,” managed by a Kubernetes replication controller, Continue reading
The former Terremark could soon be on the block, according to a report.
Amazon Web Services could be worth $160B; Dell to sell $10B in non-core assets to pay for EMC.
Please join us in congratulating the following iPexpert students who have passed their CCIE lab!
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The 'benevolent stewardship' aspect of ONOS doesn't sit well with some.
How to capture the huge business opportunity of virtual services? The Cisco webinar explains. Sign up now!
Join SDxCentral and Brocade for the December 4th DemoFriday at 10:00am to learn how simplify vCPE automation and management with open source solutions like OpenStack Tacker and Brocade's vRouter.
It’s hard to believe that it has been a year since Rich Napolitano took the helm as CEO of Plexxi. Since last November, he’s implemented a new strategic vision, formed an exclusive channel distribution agreement with Arrow Electronics and raised a new round of funding. This week, in a profile published in eWeek, enterprise reporter Jeff Burt describes why Rich joined Plexxi and chronicles Plexxi’s successes under his leadership. Take a look. It’s definitely worth a read before you head out for the weekend. We’re excited to see what Rich’s second year at Plexxi has in store for us, our customers, partners and the industry!
Below please find a few of our top picks for our favorite news articles of the week. Enjoy!
CIO Review: How to Create the Network of the Future (pg. 48-49)
By Rich Napolitano
IT is changing. The advent of Big Data, the Internet of Things and mobile has massively increased the amount of data we are creating, storing and moving – putting an increasing strain on the piece at the center of it all: the network. More data is a reality. It empowers users around the world with more information than they could ever Continue reading
Myths often encountered when demonstrating NFV solutions.