What’s Free at Linux Academy — March 2019

Linux Academy

By adding free cloud training to our Community Membership, students have the opportunity to develop their Linux and cloud skills further. Stay tuned to the Linux Academy blog for further details. Are you a non-technical person just wanting to know what this “Linux” thing is?

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Step-by-Step: Automated Provisioning for Linux in the Cloud with Microsoft Azure, XPlat CLI, JSON and Node.js ( Part 2 )

IT Pros Rock!

There's lots of tools that can be leveraged for automating Linux workloads on Microsoft Azure , including Azure Automation , PowerShell DSC for Linux , VM Agent Custom Scripts , Cloud-Init , XPlat CLI for Azure , Vagrant , Docker and third-party tools such as Chef and Puppet.

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Weekly Update 5-20-2019

Linux Academy

Great news for all of our Linux Academy students; Red Hat Enterprise is already available to try out in Linux Academy’s Cloud Playground! We have more information on t he release in general and all the new features in our podcast Linux Action News and episode 105.

Weekly Update 6-3-2019

Linux Academy

This week, we’re talking all about serverless computing, what it is, why it’s relevant, and the release of a free course that can be enjoyed by everyone on the Linux Academy platform, including Community Edition account members. Configure auto-scaling with load balancers.

Weekly Update 6-17-2019: All About Ansible

Linux Academy

But y ou can do all of that and more in our free Ansible Quick Start course on Linux Academy , right now. LPI Linux Essentials 1.6. Load Balancing Google Compute Engine Instances. LINUX Unplugged — Resilience Is Futile : Is Resilient Linux truly an indestructible distro?

18 Steps for End-to-End IaaS Provisioning in the Cloud with Azure Resource Manager (ARM), PowerShell and Desired State Configuration (DSC)

IT Pros Rock!

as of this article’s publication date, to perform end-to-end provisioning of a common IaaS VM scenario: load-balanced web applications.

End-to-End IaaS Workload Provisioning in the Cloud with Azure Automation and PowerShell DSC ( Part 2 )

IT Pros Rock!

The end goal of this effort is to provide accelerated "push-button" delivery of highly available, load-balanced cloud applications. for Windows Server 2012 R2, and has since been extended to support Linux as well.

DockerCon 2017 Black Belt Session: Cilium for Network and Application Security

Scott Lowe

Graf starts by talking about how BPF (specifically, extended BPF or eBPF) can be used to rethink how the Linux kernel handles network traffic. BPF can reject unauthorized connections before the Linux kernel even starts building TCP packets and moving them among various components within the kernel. Shifting focus slightly, Graf moves on to discuss XDP/BPF and the “software load balancer of the future.” Networking Docker DockerCon2017 Cilium Linux

Azure Training Courses | New January Releases

Linux Academy

Linux Academy is the only way to get exam-like training for multiple Microsoft Azure certifications. Create a Load Balanced VM Scale Set in Azure. The post Azure Training Courses | New January Releases appeared first on Linux Academy Blog. When Microsoft announced all-new Azure certification exams last September, we added four new Training Architects focused on preparing our students.

Technology Short Take #81

Scott Lowe

Here’s a handy list of deprecated Linux network commands and their replacements. Konstantin Ryabitsev has a series going on securing a SysAdmin Linux workstation. Part 1 covers how to choose a Linux distribution, and part 2 discusses some security tips for installing Linux on your SysAdmin workstation. Here’s a Windows-centric walkthrough to using Nginx to load balance across a Docker Swarm cluster. Welcome to Technology Short Take #81!

DockerCon 2016 Day 1 Keynote

Scott Lowe

Golub gives a “shout out” to the technologies underpinning modern Linux containers (namespaces, cgroups, etc., Built-in routing mesh: Swarm-wide overlay networking offering container-native load balancing (using IPVS), DNS-based service discovery with no separate cluster to setup or manage and interoperability with existing load balancers. Docker OSS Linux

Technology Short Take #78

Scott Lowe

The rise of the disaggregated network operating system (NOS) marches on: this time, it’s Big Switch Networks announcing expanded hardware support in Open Network Linux (ONL) , upon which its own NOS is based. The Pivotal Engineering blog has an article that shows how to use BOSH with the vSphere CPI to automate adding servers to an NSX load balancing pool. I use OTR with Adium on OS X, and OTR with Pidgin on my Fedora Linux laptop.).

VMworld 2013 – Network Virtualization: Moving Beyond the Obvious (My Notes)

Virtualized Greek

You can save money if you consolidate your Windows & Linux workloads to fewer servers. The Second are is the higher level layers such as load balancing. Speaker: Martin Casado (VMware Networking CTO).

Expanding the Cloud: Docker Containers in Elastic Beanstalk

All Things Distributed

Several weeks ago we made it simple to yum install Docker on your EC2 Instances running Amazon Linux, and today Elastic Beanstalk introduces the ability to deploy, manage, and scale Docker Containers.

AWS Lambda Versioning and Aliases

Linux Academy

As I detailed in a previous blog post, I’m continuing to update the Linux Academy AWS DevOps Pro certification course. In AWS, we work a lot with infrastructure: VPCs, EC2 instances, Auto Scaling Groups, Load Balancers (Elastic, Application, or Network).

Getting Started with Kubernetes Using Minikube

Linux Academy

You can look at the official documentation to see what you will modify if you’re using Linux or Windows: $ curl -LO [link] -s [link] && chmod +x kubectl && mv kubectl /usr/local/bin/. Let’s expose our deployment behind a load-balancing service: $ kubectl expose deployment webserver-deployment --type=LoadBalancer --port=80 service/webserver-deployment exposed. The post Getting Started with Kubernetes Using Minikube appeared first on Linux Academy Blog.

Technology Short Take #27

Scott Lowe

These articles are a bit long in the tooth, but CSS Corp has a useful series of articles on bundling various Linux distributions for use with OpenStack: bundling CentOS , bundling CentOS with VNC , bundling Debian , and bundling OpenSUSE. I enjoyed this article by Josh Townsend on using SUSE Studio and HAProxy to create a (free) open source load balancing solution for VMware View. Welcome to Technology Short Take #27!

Technology Short Take #25

Scott Lowe

Only a true geek would be interested in this, but here’s some information on running OpenBSD in KVM on Linux. Given my past interest in OpenBSD and my present interest in KVM on Linux, this might be something I’ll be trying myself soon. In any case, this article by Frank Denneman on Storage DRS load balancing frequency might be useful to you. Networking Security Storage Virtualization Automation KVM Linux OpenStack OSS OVS vCloud VMware

Step-by-Step: Setup Multiple Public IPs on a VM in Azure


It now allows a VM running Windows or Linux to have multiple (public and private) IP addresses assigned to the NICs attached to it. Hello Folks, I’m currently working with a customer who’s migrating some workloads to Azure.

Step-by-Step: Build Windows Server 2012 and SQL. - TechNet Blogs

IT Pros Rock!

With Windows Azure, you can easily deploy and run Windows Server and Linux virtual machines on your own virtual network in the cloud. In this step-by-step guide, you will learn how to deploy and support a common two-tier web application architecture using Windows Server 2012 web servers and SQL Server 2012 database servers hosted in Windows Azure in a load-balanced configuration. Configure Load Balancing in Windows Azure. Loading. Sign in. IT Pros ROCK!

Vendor-Side DevOps Practices Can Still Deliver Better Value While Client-Side Government Processes Catch Up


Each cloud computing provider has “opinionated” ways of handling things such as load balancing, elastic scaling, service discovery, data access, and security to name just a few. Docker is the next leap past virtualization, employing self-contained Linux kernels that can be shared across components, sparing the Linux host and making better use of client IT resources — which drives cost effectiveness.

Liveblog: VMworld 2019 Day 1 General Session

Scott Lowe

Beda shares a few details on preliminary performance results showing Pacific running workloads 30% faster than Linux VMs and 8% faster than bare metal environments. Naturally, a discussion of 5G leads into a discussion on networking, and this results in Gelsinger focusing on VMware NSX and related networking acquisitions such as Velocloud (for SD-WAN) and Avi Networks (now NSX Advanced Load Balancer). This is the liveblog from the day 1 general session at VMworld 2019.

CoreOS Continued: Fleet and Docker

Scott Lowe

OS X provides an SSH agent by default, but on Linux systems you will probably have to manually run an SSH agent and add the appropriate SSH key: eval `ssh-agent -s` ssh-add ~/.ssh/keyfile.pem. Once the SSH agent is running and the appropriate key is loaded (you’d clearly need to make sure the path and filename are correct in the command listed above), then the last step is to configure your ~/.ssh/config Linux CLI Docker OSS

Technology Short Take 88

Scott Lowe

Romain Decker has an “under the hood” look at the VMware NSX load balancer. This graphical summary of the AWS Application Load Balancer (ALB) is pretty handy. Brendan Gregg has a pretty detailed write-up on migrating from Solaris to Linux (pertinent given the recent layoff of the majority of the Solaris developers). Welcome to Technology Short Take #88!

IDF 2014: Architecting for SDI, a Microserver Perspective

Scott Lowe

Workloads are scheduled across these server/linecards using Valiant Load Balancing (VLB). Of course, there are issues with packet-level load balancing and flow-level load balancing, so tradeoffs must be made one way or another. Testing latency and jitter using a Spirent shows that an SRF compares very favorably with an edge router, but not so well against a core router (even though everything on the SRF is software-based running on Linux).

Technology Short Take 103

Scott Lowe

Scott McCarty explains sVirt and how it’s used to isolate Linux containers. Check out these articles talking about IPVS-based in-cluster load balancing , CoreDNS , dynamic kubelet configuration , and resizing persistent volumes in Kubernetes. Welcome to Technology Short Take 103, where I’m back yet again with a collection of links and articles from around the World Wide Web (Ha! Bet you haven’t seen that term used in a while!) on various technology areas.

Technology Short Take #87

Scott Lowe

Vincent Bernat has a really in-depth article on IPv4 route lookup on Linux (and one on IPv6 route lookup as well). Andrew Montalenti discusses the state of Linux on the desktop by examining his own journey with various Lenovo-branded laptops. John Kozej walks through how to configure vCenter HA using the NSX load balancer. Welcome to Technology Short Take #87! I have a mix of newer and older items for you this time around.

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AWS Elastic Beanstalk: A Quick and Simple Way into the Cloud - All.

All Things Distributed

AWS Elastic Beanstalk automatically creates the AWS resources and application stack needed to run the application, freeing developers from worrying about server capacity, load balancing, scaling their application, and version control. The public beta release of AWS Elastic Beanstalk supports a container for Java developers using the familiar Linux / Apache Tomcat application stack. All Things Distributed.

The Definitive Guide to Achieve AWS Cloud Certification

Linux Academy

Load Balancers, Auto Scaling. These are the Hands-On Labs available at Linux Academy: Introduction to AWS Identity and Access Management (IAM). The post The Definitive Guide to Achieve AWS Cloud Certification appeared first on Linux Academy.

Study 16

IDF 2013: Future of SDN with the Intel ONP Switch Reference Design

Scott Lowe

NFV is intended to address the problem caused by having to route/direct traffic from various sources through physical appliances designed to provide services like content filtering, security, content delivery/acceleration, and load balancing. Some of these services naturally should run on the top-of-rack (ToR) switch, like load balancing or security services. ONS is object-oriented and compiles on every major operating system (Linux and OS X specifically called out).

Expanding the Cloud - Introducing AWS OpsWorks, a Powerful.

All Things Distributed

scale your apps using load-based or time-based auto scaling, and maintain the health of your apps by detecting and replacing failed instances. You can deploy your application in the configuration you choose on Amazon Linux and Ubuntu. All Things Distributed.

Technology Short Take #56

Scott Lowe

Russell Bryant has a couple great articles on OVN— how to test OVN’s “EZ Bake” release with DevStack as well as an article on implementing OpenStack security groups using OVN ACLs (which in turn leverage the integration between Open vSwitch and the Linux kernel’s conntrack module). Linux network namespaces is a topic I’ve covered here before , but it’s always great to have multiple viewpoints and explanations of technologies and concepts to get a complete and comprehensive view.

Technology Short Take #58

Scott Lowe

If you’d like to play around with Cumulus Linux but don’t have a compatible hardware switch, Cumulus VX is the answer. This article listing 20 Linux server hardening tips contains some basic tips but is nevertheless a very good resource for someone looking for Linux security recommendations. William Lam breaks down the real value of load balancing your PSC in this in-depth article. Welcome to Technology Short Take #58.

Liveblog: DockerCon 2015 Day 2 General Session

Scott Lowe

The current GSA applications look like stovepipes that often implement replicated services using different technologies and solutions (different RDMS solutions, different load balancers, duplicate identity/access management solutions). As the panel wraps up, Johnston keeps Russinovich on stage, and transitions into a discussion about the use of both Linux and Windows for Docker containers. This is a liveblog from the day 2 general session at DockerCon 2015.

Technology Short Take #48

Scott Lowe

The “gotcha” is that these software stacks haven’t been written yet, so the idea of repurposing hardware from switch to firewall to load balancer is still a bit of a unicorn. First, here’s a workaround to the fact that vCA doesn’t (yet) do cloud-init, which makes injecting SSH keys into Linux instances a bit difficult. Welcome to Technology Short Take #48, another installation in my irregularly-published series that collects links, articles, and thoughts from around the web.