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. Each month, we will kick off our community content with a live study group, allowing members of the Linux Academy community to come together and share their insights in order to learn from one another. Stay tuned to the Linux Academy blog for further details. This course will dive into LXC (LinuX Containers) and its container manager, LXD.

Linux 73

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. And for the month of June, this course is one of the multiple free courses on our Community Edition, meaning anyone can take it no matter what type of Linux Academy account they have.

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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. Implementing an Auto Scaling Group and Application Load Balancer in AWS. LINUX Unplugged — Peak Red Hat : We scale the Red Hat Summit and come back with a few stories to share.

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. And, for our audiophiles, don’t forget about our weekly podcasts: Choose Linux — Zorin OS 15 + LineageOS : Zorin OS is described as “a powerful desktop you already know how to use.” LINUX Unplugged — Resilience Is Futile : Is Resilient Linux truly an indestructible distro?

AIOps and our Robot Kubernetes Kops

Linux Academy

High speed low latency networks now allow us to add these nodes anywhere in a cloud infrastructure and configure them under existing load balancers. Linux Academy has recently published courses covering the AIOps and Python technologies mentioned in this article. The post AIOps and our Robot Kubernetes Kops appeared first on Linux Academy Blog. Linux Academy

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.

Top 10 Most Popular Hands-On Labs

Linux Academy

“My favorite parts about Linux Academy are the practical lab sessions and access to playground servers, this is just next level.” Setting Up an Application Load Balancer with an Auto Scaling Group and Route 53 in AWS. In this hands-on lab, you will set up an Application Load Balancer with an Auto Scaling group and Route 53 to make our website highly available to all of our users. First, you will create and configure an Application Load Balancer.

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). The post AWS Lambda Versioning and Aliases appeared first on Linux Academy Blog.

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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

Technology Short Take 153

Scott Lowe

Xavier Avrillier walks readers through using Antrea (a Kubernetes CNI built on top of Open vSwitch—a topic I’ve touched on a time or two) to provide on-premise load balancing in Kubernetes. Although Linux is often considered to be superior to Windows and macOS with regard to security, it is not without its own security flaws. Matt Oswalt takes readers though a fairly in-depth look at sockets and address binds in Linux. Welcome to Technology Short Take #153!

IPv6 68

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 144

Scott Lowe

I have a fairly diverse set of links for readers this time around, covering topics from microchips to improving your writing, with stops along the way in topics like Kubernetes, virtualization, Linux, and the popular JSON-parsing tool jq. Michael Kashin shares the journey of containerizing NVIDIA Cumulus Linux. Valentina Palmiotti discusses finding a local privilege escalation in the Linux kernel via eBPF. Welcome to Technology Short Take #144!

Linux 78

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.).

Technology Short Take 151

Scott Lowe

Nick Schmidt talks about using GitOps with the NSX Advanced Load Balancer. Dennis Felsing shares some thoughts on switching to macOS after 15 years on Linux. BIOS updates without a reboot , and under Linux first? Welcome to Technology Short Take #151, the first Technology Short Take of 2022. I hope everyone had a great holiday season and that 2022 is off to a wonderful start!

Technology Short Take 144

Scott Lowe

I have a fairly diverse set of links for readers this time around, covering topics from microchips to improving your writing, with stops along the way in topics like Kubernetes, virtualization, Linux, and the popular JSON-parsing tool jq along the way. Michael Kashin shares the journey of containerizing NVIDIA Cumulus Linux. Valentina Palmiotti discusses finding a local privilege escalation in the Linux kernel via eBPF. Welcome to Technology Short Take #144!

Linux 60

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

Technology Short Take 141

Scott Lowe

Via Ivan Pepelnjak, I was pointed to Jon Langemak’s in-depth discussion of working with Linux VRFs. The first is a post on Cilium and F5 load balancer integration , while the second discusses implementing Kubernetes network policies with Cilium and Linkerd. Hari Rana has a detailed discussion of security concerns regarding Flatpak (a packaging format for Linux applications). Welcome to Technology Short Take #141!

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. F5 for example has announced a load balancing solution that support VXLAN for load balancing hosts connected to a physical port with a virtual host connected to the virtual network. Speaker: Martin Casado (VMware Networking CTO).

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

CTOvision

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.

Devops 151

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. Along with the native Docker functionality you''re used to - including log access, volume mapping, and environment variables - enjoy the automated monitoring, provisioning, and configuration of things like Elastic Load Balancing and Auto Scaling that Elastic Beanstalk provides.

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

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 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!

Technology Short Take 119

Scott Lowe

The “TL;DR” for those who are interested is that this solution bypasses the normal iptables layer involved in most Kubernetes implementations to load balance traffic directly to Pods in the cluster. Welcome to Technology Short Take #119! As usual, I’ve collected some articles and links from around the Internet pertaining to various data center- and cloud-related topics.

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. Getting AWS certified can be a daunting task, but luckily we’re in your corner and we’re going to help you pass.

Linux 15

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.

IPv6 60

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.

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.

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.

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).

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.

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. Next to these solutions you can of course manage your compute resources directly, for example using CloudWatch, AutoScaling and Elastic Load Balancing. All Things Distributed.

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.

The Hacker Mind Podcast: Shall We Play A Game?

ForAllSecure

Even if it's running simple Linux commands and just being in the command line to navigate around the file system, it'll get you started. Capture the Flag is a game, a community, and a really cool hacker culture. But will we one day stream CTFs like we do World of Warcraft or League of Legends?

The Hacker Mind Podcast: Shall We Play A Game?

ForAllSecure

Even if it's running simple Linux commands and just being in the command line to navigate around the file system, it'll get you started. Capture the Flag is a game, a community, and a really cool hacker culture. But will we one day stream CTFs like we do World of Warcraft or League of Legends?