Cisco in China: If You Can’t Beat ‘Em, Join ‘Em
Having struggled in China since Snowden, Cisco is taking a new tack.
Using Docker Machine with OpenStack
In this post, I’m going to show you how to use Docker Machine with OpenStack. This is something I’ve been interested in testing for a while, and now that I finally have my test lab back up and running, I was able to spend some time on this. I’ll spend some time later in the post covering my reasons for wanting to look at this, but I’ll start with the technical content of how it works.
I tested this setup with the following components:
- The client system was running OS X 10.9.5 with the Docker 1.8.2 client binary and Docker Machine 0.4.1.
- The OpenStack cloud was running the Juno release on Ubuntu 14.04 LTS, KVM hypervisors, and VMware NSX for networking.
There are (at least) two approaches to using Docker Machine and OpenStack together:
- You can use Docker Machine’s
genericdriver to consume already-provisioned OpenStack instances. This is, in large part, very similar to what I covered here, but I’ll cover it in this post just for the sake of completeness. - You can use Docker Machine’s
openstackdriver to automatically provision and configure new instances on an OpenStack cloud. This is the Continue reading
A Quick Reference to Adding New Storage with LVM
This post walks through the process of adding storage capacity to a Linux server using LVM. There’s nothing new, revolutionary, or cutting-edge about this post—honestly, it’s really more for my own reference than anything else. Adding logical volumes is something that I do so infrequently that it’s hard to remember all the commands, so I’m recording them here for when I need them next time.
First, list the physical disks in the system (all commands should be prefaced with sudo or run as a user with the appropriate permissions):
fdisk -l
This will help you identify which (new) disk needs to be added. In my examples, I’ll use /dev/sdb.
Start partitioning the new disk (replace /dev/sdb with the appropriate values for your system):
fdisk /dev/sdb
I’m assuming that this isn’t a boot drive and that whatever logical volumes you create will take up the entire disk. Once you get into fdisk, follow these steps:
- Enter
nto create a new partition. - Enter
pto make this a primary partition. - Enter
1to make this the first partition on the disk. - Press enter twice to accept default start and end cylinders (unless you know you need to change them).
- Enter
Continue reading
Opengear Saves the Day from 35K Feet
On Tuesday, I was boarding a flight heading to the west coast and realized I had 3 switches powered down in the colo that I needed for a presentation and demo on Wednesday. Not a good feeling.
We have an IP enabled PDU that I usually connect to with no issues from the office and home office since we also have an SD-WAN deployed using Viptela. The only issue — there is not a way to VPN into the colo (yes, that’s my fault).
As it turns out, I had exposed the Opengear console server, that we used for all out of band access, to the Internet a few months prior. On a flight that I was only planning to do offline work, I was forced to purchase Wifi…from there, the fix was pretty simple.
I SSH’d into the Opengear console server, got access to the Juniper SRX perimeter FW, and then added a temporary NAT configuration that exposed the PDU to the Internet. I was able to now access the PDU directly from 35K feet in the air, get the devices powered up, and have some peace that they could be used in the demo. Sure, I could have Continue reading
ONF Debuts Northbound Interfaces for Intent-Based Networking
The intent-based Boulder & Aspen projects are designed to open up networking.
Increased Security Spending: Good Money After Bad?
A couple of recent analyst reports tout significant growth in the information security market. But More security spending on products doesn’t necessarily mean better outcomes for customers.
The post Increased Security Spending: Good Money After Bad? appeared first on Packet Pushers.
Tower 2.3 Has Arrived
We’re happy to announce the release of Ansible Tower 2.3, our console and service that brings control, security, and delegation to your Ansible deployments.
Historically Tower has been installed with a simple setup playbook that you run with the Ansible you already have to download and install Tower. But not everyone has the luxury of access to the internet at all times.
Starting with Tower 2.3, we now offer a bundled installer for Red Hat Enterprise Linux and CentOS systems. This all-in-one installer contains everything you need to get Tower started in one bundle, including bootstrapping of Ansible for you as needed. All you need is a Red Hat or CentOS machine with access to the vendor OS repositories - no other external access required. The playbook installer is still available as well, and Tower is also still available via Vagrant image or AMI if you’d prefer to try it via that method.
As usual, this release of Tower includes a variety of bug fixes as well, including performance improvements around listing jobs and job templates.
For more information on Tower 2.3, check the release notes at: http://docs.ansible.com/ansible-tower/latest/html/installandreference/release_notes.html
To try Ansible Tower 2.3 Continue reading
Citrix Sale Options Would Likely Include Netscaler & GoToMeeting
Citrix is reportedly mulling a selloff of its entire business, or certain assets. Dell is a possible suitor.
Technology Short Take #54
Welcome to Technology Short Take #54! In this episode, I’ve gathered an odd collection of links and articles about key data center technologies. Without further ado, let’s get to the content.
Networking
- Not sure if this link belongs in Networking or in Virtualization, but we’ll stick it here since it talks about VMware NSX. Here’s a three-part series on running VMware NSX on vSphere on AWS via Ravello Systems (part 1, part 2, and part 3). This is a great way to get your feet wet with NSX without having to invest in a home lab.
- This is a bit of an older post, but I really appreciated Bob McCouch’s post on building tools versus “programming.” I think Bob really hit the nail on the head when he said that the real goal is working efficiently with high quality and low error rates. If this means you need to learn to write a script, then so be it. If it means it needs to be manual, then so be it (but please, please, do take the time to document it!).
- Dan Conde of ESG has a write-up on the role of NSX in Continue reading
Last Chance! Maximize Network Programmability with NX-API REST, NX-Toolkit, & NX-API
Join the Cisco DemoFriday on September 25th and learn how you can benefit from network programmability as you transition from legacy systems to open standard interfaces.
How will new memory technologies impact in-memory databases?
This is a guest post by Yiftach Shoolman, Co-founder & CTO of redislabs. Will 3D XPoint change everything? Not as much as you might hope...
Recently, investors, analysts, partners and customers have asked me how the announcement from Intel and Micron about their new 3D XPoint memory technology will affect the in-memory databases market. In these discussions, a common question was “Who needs an in-memory database if all the non in-memory databases will achieve similar performance with 3D XPoint technology?” Well, I think that's a valid question so I've decided to take a moment to describe how we think this technology will influence our market.
First, a little background...
The motivation of Intel and Micron is clear -- DRAM is expensive and hasn’t changed much during the last few years (as shown below). In addition, there are currently only three major makers of DRAM on the planet (Samsung Electronics, Micron and SK Hynix), which means that the competition between them is not as cutthroat as it used to be between four and five major manufacturers several years ago.
DRAM Price Trends
CloudFlare Raises $110M with Promise to Eliminate Lots of Hardware
A five-year-old upstart garners investments from Google, Microsoft, Baidu, and Qualcomm and sets its sights on competing with Amazon Web Services.
Former Gigamon CEO Raises $7M for a Different Type of Security Monitoring
Datiphy watches how data is being used — a managed service that's being turned into a software product for the U.S. market.
