engyak.co
open-menu closeme
Home
Archive
Wi-Fi and Radio
Open Source
Python
Information Security
Improving productivity with code
Network Design Patterns
IPv6 / IP Design
github twitter linkedin rss
  • Leverage Idempotent, Declarative Profiles with the NSX-ALB (Avi) REST API

    calendar Jan 2, 2022 · 5 min read · Load Balancing TLS VMWare Network Security Python Avi Programmability Design Patterns Network Automation NSX-ALB  ·
    Share on: twitter facebook linkedin copy

    Idempotence and Declarative Methods - not just buzzwords Idempotence Coined by Benjamin Peirce, this term indicates that a mathematical operation will produce a consistent result, even with repetition. Idempotence is much more complicated subject in mathematics and computer science. IT and DevOps use a simplified …


    Read More
  • Why Automate? Reliability Approaches with the VMware NSX-T API

    calendar Nov 24, 2021 · 11 min read · Home Lab Continuous Delivery JSON NSX-T Network Automation  ·
    Share on: twitter facebook linkedin copy

    Why should an infrastructure engineer leverage REST APIs? I'm sure most IT workers have at least heard of REST APIs, or heard a sales pitch where a vendor insists that while a requested functionality doesn't exist, you could build it yourself by "using the API". Or, participate in discussions where people …


    Read More
  • VMworld 2021 is right around the corner! Here are my top 10 sessions!

    calendar Aug 25, 2021 · 8 min read · VMWare Network Security Avi NSX-T Network Automation  ·
    Share on: twitter facebook linkedin copy

    VMworld 2021 is online this year I'll really miss some of the sessions and exploration we've had in past years in person, but I think VMware made the right call this year. We can expect to see a fundamental shift with online conventions - and this will need some unique strategy compared to previous years. The Basics I …


    Read More
  • Managing DNS Servers with Ansible and Jenkins (Unbound, BIND)

    calendar Aug 22, 2021 · 9 min read · DNS Jenkins Continuous Delivery Bind9 Programmability Ansible Design Patterns Network Automation Unbound  ·
    Share on: twitter facebook linkedin copy

    DNS is a vital component of all computer networks. Also known as the "Internet Yellow Pages," this service is consumed by every household. DNS services are typically deployed in several patterns to support users and systems: DNS Forwarder: This deployment method is the most common. Everybody needs name …


    Read More
  • NSX Advanced Load Balancer - NSX-T Service Engine Creation Failures: CC_SE_CREATION_FAILURE and Transport Node Not Found to create service engine

    calendar Jul 5, 2021 · 3 min read · VMWare Datacenter Networking Avi NSX-T Design Patterns Network Automation NSX-ALB  ·
    Share on: twitter facebook linkedin copy

    TL;DR If you see either of these errors, check grep 'ERROR' /opt/avi/log/cc_agent_go_{{ cloud }} for the potential cause. In my case, the / character was not correctly processed by Avi's Golang client (facing vCenter). The Problem When trying to configure NSX ALB + NSX-T on my home lab, I am presented nothing but the …


    Read More
  • XML, JSON, YAML - Python data structures and visualization for infrastructure engineers

    calendar Jun 6, 2021 · 6 min read · Python YAML JSON Programmability XML Ansible Design Patterns Network Automation  ·
    Share on: twitter facebook linkedin copy

    At some point, we can't "do it all" with one block of code. As developers, we need to store persistent data for a variety of reasons: We want it for later execution (or to compare it to another result) We're sick of storing variables in code. This matters a lot more in compiled languages than runtime ones We …


    Read More
  • Leveraging Hyperglass and NSX-T!

    calendar May 9, 2021 · 3 min read · eBGP Datacenter Networking FOSS/Linux BGP Design Patterns Network Automation  ·
    Share on: twitter facebook linkedin copy

    For this example deployment, I'll be using my NSX-T Lab as the fabric, VyOS for the Overloaded Router role, and trying out hyperglass: Installation (VyOS) I already have a base image for VyOS with its management VRF set up - and updating the base image prior to deployment is a breeze due to the vSphere 7 VM Template …


    Read More
  • VMware NSX Advanced Load Balancer - Overview

    calendar Apr 3, 2021 · 5 min read · eBGP VMWare Home Lab IPv6 Datacenter Networking BGP NSX-T Network Automation  ·
    Share on: twitter facebook linkedin copy

    Load Balancing is Important Load balancing is an important aspect of network mobility. How is a network useful if you can't move around within it? Cellular networks lose their appeal if you drop connectivity every time you roam between towers Wi-Fi networks are designed to facilitate smaller-scale movements. Imagine if …


    Read More
  • Design Pattern: Looking Glasses

    calendar Mar 22, 2021 · 3 min read · eBGP Python FOSS/Linux Network Automation Home Lab IPv6 Datacenter Networking iBGP Routing & Switching Studies BGP Programmability Design Patterns  ·
    Share on: twitter facebook linkedin copy

    It's probably safe to say that service provider networking is pretty unique. One particular design pattern - Looking Glasses - is extremely useful for complex dynamically routed networks. I'd really like to shift the gatekeeping needle here - networks that are complex enough to benefit from a looking glass should move …


    Read More
  • Why Automate? Using Pipelines to Develop and Manage Network Configurations

    calendar Dec 31, 2020 · 10 min read · eBGP Home Lab IPv6 Datacenter Networking FOSS/Linux Spine and Leaf Routing & Switching Studies BGP Ansible Jinja Network Automation  ·
    Share on: twitter facebook linkedin copy

    Continuous Delivery: No Rest for the Wicked Now that we have: A method to generate Desired State Configurations, by defining Declaratively what the device config should be, and combining it with what a device config should have A method to apply configurations automatically, without PuTTY Copy-Pasting We now can …


    Read More
    • ««
    • «
    • 1
    • 2
    • 3
    • »
    • »»

ENGYAK.co

A blog about IT

Disclaimer

The opinions expressed on this site are my own personal opinions and do not represent my employer’s view in any way.

Recent Posts

  • Automate Cisco IOS/IOS-XE documentation with Ansible (with examples)
  • Document Networks as Code with D2!
  • Document vSphere as Code with D2!
  • Diagram as Code with D2!
  • Enable ToFU (Trust on First Use) with OpenSSH
  • Deploy vSphere VMs with Ansible!
  • Why Automate? VM Deployment with vSphere's REST API
  • What happens to packets with a VMware vSphere Distributed Switch?

Series

SPINE-AND-LEAF-FABRICS 8 WHY-AUTOMATE 8 D2 4

Tags

DATACENTER-NETWORKING 43 VMWARE 43 ROUTING-SWITCHING-STUDIES 35 NSX-T 32 HOME-LAB 31 BGP 28 NETWORK-AUTOMATION 23 PROGRAMMABILITY 22 DESIGN-PATTERNS 20 EBGP 20 IPV6 15 NETWORK-SECURITY 15 AVI 13 ANSIBLE 12 FOSS/LINUX 12 NSX-ALB 11 IBGP 10 LINUX 10
All Tags
802.3BY1 ANSIBLE12 ANYCAST3 AVI13 BGP28 BIND91 CISCO-NX-OS3 CLOUD1 CONTINUOUS-DELIVERY5 DATACENTER-NETWORKING43 DESIGN-PATTERNS20 DIAGRAMS4 DNS1 EBGP20 FOSS/LINUX12 GITOPS1 HOME-LAB31 IBGP10 INFORMATION-SECURITY5 IPV615 IS-IS3 JENKINS4 JINJA4 JSON4 LAYER-12 LAYER-22 LINUX10 LOAD-BALANCING9 NETWORK-AUTOMATION23 NETWORK-SECURITY15 NFV3 NGINX1 NSX1 NSX-ALB11 NSX-T32 NSX-V2 OSPF5 PAN-OS3 PROGRAMMABILITY22 PYTHON8 RIPV22 ROUTING-SWITCHING-STUDIES35 SPANNING-TREE1 SPINE-AND-LEAF10 TLS3 UNBOUND1 UNEARNED-UPTIME2 VCENTER1 VCSA1 VMWARE43 VSPHERE4 WI-FI4 WPA32 XML1 YAML1
[A~Z][0~9]
engyak.co

Copyright 2019-  ENGYAK.CO. All Rights Reserved

to-top