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| © ContainerWorld (Informa) - Taken from container world photo gallery |
The Naming of Hosts
The Naming of Hosts is a difficult matter,
It isn’t just one of your holiday games;
You may think at first I’m as mad as a hatter
When I tell you, a host must have THREE DIFFERENT NAMES.
First of all, there’s the CNAME you want to use daily,
Such as nms, intranet, HR or games–
Such as payroll, or passwordchange, IT or training,
All of them sensible everyday names.
There are fancier names if you think they sound better,
Vendors and products that all sound the same,
Such as PeopleSoft, OpenView, Cisco, or NetApp–
But all of them sensible everyday names.
But I tell you, a host needs a name that’s unusual,
A name that’s peculiar, and more dignified,
Else how can it justify license renewals,
Or memory upgrades, or hybrid flash drives?
For names of this kind, I can give you a standard,
Twelve bytes for location, and fifteen for app,
These names are the ones that are never remembered,
They’re cryptic, unreadable, frustrating crap.
But above and beyond there’s still one name left over,
And that is the name that you never will guess;
The name that no human research can discover–
But Continue reading
Michelle Chubirka from Post Modern Security spent ten years as a sysadmin with a primary focus on managing a BIND DNS for a very large university in the US. With some regret, she says: This history makes what I’m about to recommend even more shocking. Outside of service providers, I no longer believe that organizations should […]
The post Response: Why You Shouldn’t Be Hosting Your DNS appeared first on EtherealMind.
NTT will run EPC in its network with NFV technology, starting in March.
While automation is great, we have to be careful not to recreate past problems. What I mean is that playbooks should be written in a generic fashion that can be applied to more than one host. If we’re writing playbooks that only work on one single host, we aren’t much further ahead than we were before.
Two of the key components of making playbooks reusable are Ansible variables and roles. Let’s try and define each of them individually and while showing some examples along the way.
Roles
Roles allow you to call a set of variables, tasks, and handlers by simply specifying a defined role. Roles require the use of a defined file structure in order to work. Per the Ansible documentation, that structure looks like this…
Roles are really just a way to split up your playbook into smaller reusable parts. For instance, let’s consider we added another host to our lab…
Now look at this playbook…
---
- hosts: linuxservers
tasks:
- name: Install Apache Web Server
yum: name=httpd state=latest
notify:
- openport
- startwebserver
handlers:
- name: openport
service: name=httpd state=started
- name: startwebserver
firewalld: port=80/tcp permanent=true state=enabled immediate=yes
- hosts: Continue reading
Way too often do we want to learn a new technology, but end up spending countless hours just getting the product, tool, or technology downloaded, installed, and at a point to begin using. This is unacceptable.
We need a platform that offers on-demand network infrastructure labs that makes it extremely easy to test and learn how to use network device APIs, how to write code against a network device, and how to use DevOps tool chains in the context of networking.
It’s true, this has all become easier with tools such as Virtual Box and Vagrant, but you can still spend the same amount of time getting the underlying infrastructure setup as you spend on the actual tests you need to perform. In that model, you also need to be able have enough horsepower to run enough virtual machines as well, which often isn’t the case. On top of that, many Enterprises don’t allow tools such as these to be installed.
What I am proposing and getting ready to launch is a cloud based platform that allows you to launch pre-built network topologies in minutes. Upon launch, they are ready to be used, automated, and managed Continue reading
Way too often do we want to learn a new technology, but end up spending countless hours just getting the product, tool, or technology downloaded, installed, and at a point to begin using. This is unacceptable.
We need a platform that offers on-demand network infrastructure labs that makes it extremely easy to test and learn how to use network device APIs, how to write code against a network device, and how to use DevOps tool chains in the context of networking.
It’s true, this has all become easier with tools such as Virtual Box and Vagrant, but you can still spend the same amount of time getting the underlying infrastructure setup as you spend on the actual tests you need to perform. In that model, you also need to be able have enough horsepower to run enough virtual machines as well, which often isn’t the case. On top of that, many Enterprises don’t allow tools such as these to be installed.
What I am proposing and getting ready to launch is a cloud based platform that allows you to launch pre-built network topologies in minutes. Upon launch, they are ready to be used, automated, and managed Continue reading
New report emphasizes the importance of layered defense.
It's not about containers or Docker. CoreOS claims a bigger mission.
On today's episode of The Next Level we talk about the ups and downs of consulting. If you work as a consultant you can compare your experiences. If you're considering the consulting life, this is your chance to get the inside scoop.
The post The Next Level: The Consulting Life appeared first on Packet Pushers.
On today's episode of The Next Level we talk about the ups and downs of consulting. If you work as a consultant you can compare your experiences. If you're considering the consulting life, this is your chance to get the inside scoop.
The post The Next Level: The Consulting Life appeared first on Packet Pushers.
As the industry transitions into the next era of IT, the flood of data and application growth is forcing Cloud-based network architectures to change radically (for more info take a look here). This shift is causing an increased emphasis on tools and service integration rather than a focus on individual components. The emerging role of Cloud Architect is tasked with delivering agility and cost savings through automation, resource elasticity, data and application mobility and workflow integration. We’ve identified this new role and have the tools that will enable Cloud Builders to be successful—Plexxi Control software, Plexxi Connect and Plexxi Switch. Interested in learning more? Take a look at our solutions brief on networking for Cloud Builders.
Below please find a few of our top picks for our favorite news articles of the week.
ITBusinessEdge: Striving Toward Unified Enterprise Infrastructure
By Arthur Cole
Most enterprises are already realizing some of the benefits of cloud computing in the form of lower capital and operating costs, better scalability and access to more modern, robust infrastructure. But if they are not careful, they run the risk of migrating workloads onto too many disparate platforms, creating the same kinds of data silos that currently Continue reading
Hello Everyone As you all know, the DesignWorld is a place where you can find network design videos, articles, quizzes, and comparison charts. Currently, only CCDE resources are there, but the good news is that other courses will be added, too. In addition, CCDA and CCDP courses will be added. There was a promotion for the […]
The post Last 5 Days to Enjoy the DesignWorld Subscription Discount appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
Hello Everyone As you all know, the DesignWorld is a place where you can find network design videos, articles, quizzes, and comparison charts. Currently, only CCDE resources are there, but the good news is that other courses will be added, too. In addition, CCDA and CCDP courses will be added. There was a promotion for the […]
The post Enjoy the DesignWorld Subscription Discount before the 5-day Deadline appeared first on Orhanergun.
Special thanks to all who joined us and submitted questions to the Pluribus Network Virtualization Report Webinar. The full event recording and Q&A are now available!
