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Introduction to Linux interfaces for virtual networking - Red Hat Developer Blog
This post provides a brief introduction to Linux virtual interfaces, focusing on frequently used interfaces and some interfaces that can be easily confused with one another.
network  topology  bridge  vlan  ip  virtual  5* 
march 2019 by ianweatherhogg
dotfiles/qemu-vlan at master · tokiclover/dotfiles
mirror of https://gitlab.com/tokiclover/dotfiles. Contribute to tokiclover/dotfiles development by creating an account on GitHub.
gist  qemu  network  topology  ip  table  dhcp 
november 2018 by ianweatherhogg
Building Container Networks with Vxlan
Setting up DHCP ensures all containers or VMs connecting to the network get an IP and networking set up automatically. Setting up DHCP is not difficult, you need to choose a subnet for the overlay network, let's say 10.0.50.0/24, and then simply start a Dnsmasq instance attached to the vx0 bridge on one of the hosts. This instance will take care of DHCP services for the entire overlay network.
lxc  network  topology  5* 
november 2018 by ianweatherhogg
Overlay Networks
This creates a Vxlan device vxlan0 with vxid 42 connected to network eth0. In this case we are assuming the outgoing network interface for the host to the other hosts who are going to be part of this Vxlan network is eth0. Vxlan uses multicast and 239.1.1.1 is the multicast IP
network  topology  overlay  router  ip  lan  5* 
november 2018 by ianweatherhogg
Blocking ingress traffic to Docker swarm worker machines | OpsTips
Once a Docker Swarm Mode cluster is formed, all nodes participate in the routing mesh and accept ingress traffic. Check out how to block that feature.
docker  cluster  ip  table  topology  5* 
september 2018 by ianweatherhogg
How to emulate a network using VirtualBox | Open-Source Routing and Network Simulation
VirtualBox can connect virtual machines together to emulate a network of computers and network appliances, such as routers or servers
virtual  box  network  topology  5* 
may 2018 by ianweatherhogg
Introduction to modern network load balancing and proxying
It was brought to my attention recently that there is a dearth of introductory educational material available about modern network load balancing and proxying. I thought to myself: How can this be…
load  balance  proxy  tcp  network  topology  5*  lowlevel 
january 2018 by ianweatherhogg
Basic home gateway services: DHCP, DNS, NAT
Publicly routable IPv4 addresses, which are scarce, are not generally assigned to every host in a home network.
network  topology  dhcp  dns  ip  protocol  5*  tcp  dump 
august 2017 by ianweatherhogg
Daniel P. Berrangé » Blog Archive » Installing a 4 node Fedora 18 OpenStack Folsom cluster with PackStack
# virsh net-destroy default
# virsh net-edit default
...changing the following...
  <ip address='192.168.122.1' netmask='255.255.255.0'>
    <dhcp>
      <range start='192.168.122.2' end='192.168.122.254' />
    </dhcp>
  </ip>

...to this...

  <ip address='192.168.122.1' netmask='255.255.255.0'>
    <dhcp>
      <range start='192.168.122.2' end='192.168.122.99' />
      <host mac='52:54:00:fd:e7:03' name='f18x86_64a' ip='192.168.122.100' />
      <host mac='52:54:00:c4:b7:f6' name=...
cluster  network  topology  fedora  open  stack  installation  libvirt  5*  host 
august 2017 by ianweatherhogg
Home Rackspace Private Cloud / OpenStack Lab: Part 4 | OpenStackr
So after following the first three posts, we now have a Rackspace Private Cloud powered by OpenStack running with 2 Controllers (HA) and 3 Computes. So now what? Well the first thing we need to do is get our hands dirty with the OpenStack Networking component, Neutron, and create a network that our instances can be…
open  stack  network  topology  dhcp  dns  4* 
july 2017 by ianweatherhogg
Testing Topologies in Kafka Streams
Kafka Streams is a deployment-agnostic stream processing library written in Java. Even though Kafka has a great test coverage, there is no helper code for writing unit-tests for your Kafka Streams topologies. I wrote a little helper library Mocked Streams in Scala, which allows you to create lightweight parallelizable unit-tests for your topologies without running a full Kafka cluster neither an embedded one.
spark  kafka  stream  processing  test  topology 
february 2017 by ianweatherhogg
The Truth About Routers and Switches - DZone Web Dev
Check out this excerpt from Ben Piper's "Learn Cisco Network Administration in a Month of Lunches" and learn more about routers and switches.
network  topology  switch  bridge  router 
march 2016 by ianweatherhogg
Apache Storm 0.9 basic training - Verisign
Apache Storm 0.9 basic training (130 slides) covering: 1. Introducing Storm: history, Storm adoption in the industry, why Storm 2. Storm core concepts: topolog…
slide  presentation  storm  4*  topology 
february 2016 by ianweatherhogg
The basics – MTU, MSS, GRE, and PMTU - Das Blinken Lichten
Cisco, VMWare, Docker, Kubernetes, DevOps, F5, Automation, etc, etc, etc
network  theory  lowlevel  protocol  5*  tcp  udp  head  security  wire  shark  topology 
february 2016 by ianweatherhogg
An introduction to network namespaces - Das Blinken Lichten
Cisco, VMWare, Docker, Kubernetes, DevOps, F5, Automation, etc, etc, etc
network  name  space  ip  topology  linked  5*  router 
february 2016 by ianweatherhogg
Building an OpenStack home lab – The Lab - Das Blinken Lichten
Cisco, VMWare, Docker, Kubernetes, DevOps, F5, Automation, etc, etc, etc
open  stack  build  network  topology 
february 2016 by ianweatherhogg
Building an OpenStack home lab – Prepping the VMs - Das Blinken Lichten
Cisco, VMWare, Docker, Kubernetes, DevOps, F5, Automation, etc, etc, etc
open  stack  network  topology 
february 2016 by ianweatherhogg
Ansible up and running - Das Blinken Lichten
Cisco, VMWare, Docker, Kubernetes, DevOps, F5, Automation, etc, etc, etc
ansible  network  cluster  topology  helloworld 
february 2016 by ianweatherhogg
Routing – The basics, static routing… - Das Blinken Lichten
Cisco, VMWare, Docker, Kubernetes, DevOps, F5, Automation, etc, etc, etc
ip  network  lowlevel  helloworld  topology  router 
february 2016 by ianweatherhogg
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