Show neutron router namespaces by floating IP (FIP)

FLOATING_IP=1.2.3.4
 
# search in floating IP table
ROUTER_ID=$(openstack floating ip list --floating-ip-address ${FLOATING_IP} --long -c Router -f value)
if [ -z ${ROUTER_ID} ]; then
    # search in router
    ROUTER_ID=$(openstack router list --long | grep ${FLOATING_IP} | cut -d" " -f2)
fi
 
PROJECT_ID=$(openstack router show ${ROUTER_ID} -c project_id -f value)
 
echo -e "\e[34m# Project"
openstack router show ${ROUTER_ID} -c id -c name 
 
echo
echo -e "\e[34m# Router"
openstack project show ${PROJECT_ID} -c id -c name -c description
 
echo
echo -e "\e[34m# Router namespaces"
openstack network agent list --router ${ROUTER_ID} --long --sort-column 'HA State'
echo
 

Install Home Assistant on Raspberry Pi

Install Home Assistant on Raspberry Pi
https://www.home-assistant.io/installation/raspberrypi/

# Install rpi-imager
sudo apt install rpi-imager
 
# Create Homeassistant SD-Card
# Other specific-purpose OS > Home assistants and home Automation > Home Assistant OS
 
# Connect to HA
http://YOUR_HOME_ASSISTANT_IP:8123/
 
# Create Home Assistant account
 
# Install SSH plugin in Add-on-Store
http://YOUR_HOME_ASSISTANT_IP:8123/hassio/addon/core_ssh/info
 
# Open SSH Web CLI
http://YOUR_HOME_ASSISTANT_IP:8123/hassio/ingress/core_ssh
 
# get wifi data from workstation
WIFI_SSID="$(nmcli dev wifi show-password | grep SSID | cut -d' ' -f2-)" 
WIFI_PASS="$(nmcli dev wifi show-password | grep Pass | cut -d' ' -f2-)"
echo ha network update wlan0 \
  --ipv4-method auto \
  --wifi-auth wpa-psk \
  --wifi-mode infrastructure \
  --wifi-ssid \'${WIFI_SSID}\' \
  --wifi-psk \'${WIFI_PASS}\'
 
# paste output to SSH online console 
 
# debug
ha network info

Enable SSH key to hypervisor (Raspberry Pi)
https://community.home-assistant.io/t/howto-how-to-access-the-home-assistant-os-host-itself-over-ssh/263352/6

Raspberry Pi

Images
https://www.raspberrypi.org/downloads/

# Raspbian (Debian Jessie)
sudo umount /dev/mmcblk0*
wget -q http://director.downloads.raspberrypi.org/raspbian/images/raspbian-2016-02-29/2016-02-26-raspbian-jessie.zip -P /tmp
unzip -p /home/pako/Downloads/2016-02-26-raspbian-jessie.zip | sudo dd of=/dev/mmcblk0
sync

wget -q http://director.downloads.raspberrypi.org/raspbian_lite/images/raspbian_lite-2016-02-29/2016-02-26-raspbian-jessie-lite.zip -P /tmp

View used codecs
for codec in H264 MPG2 WVC1 MPG4 MJPG WMV9 ; do \

Install minikube

Install docker
http://www.panticz.de/docker

Install minikube
https://minikube.sigs.k8s.io/docs/start/

curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube_latest_$(dpkg --print-architecture).deb
sudo dpkg -i minikube_latest_*.deb
rm minikube_latest_*.deb
 
sudo usermod -aG docker $USER && newgrp docker
 
minikube start
 
minikube addons enable ingress

Install kubectl
https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/#install-using-native-package-management

Deploy kubernetes cluster with kubeadm

Prepare VM for Container Runtime
https://kubernetes.io/docs/setup/production-environment/container-runtimes/

# run on all nodes
 
cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
overlay
br_netfilter
EOF
 
sudo modprobe overlay
sudo modprobe br_netfilter
 
# sysctl params required by setup, params persist across reboots
cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-iptables  = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward                 = 1
EOF
 
sudo sysctl --system
 
# Verify
lsmod | grep br_netfilter
lsmod | grep overlay
sysctl net.bridge.bridge-nf-call-iptables net.bridge.bridge-nf-call-ip6tables net.ipv4.ip_forward

Install containerd
https://github.com/containerd/containerd/blob/main/docs/getting-started.md
https://docs.docker.com/engine/install/ubuntu/#install-using-the-repository

Docker networking

docker network ls
docker network inspect bridge
docker network inspect host
docker network inspect none
 
ip addr show docker0
ip link show docker0
ip -c link show type bridge
 
ip netns
docker inspect ${DOCKER_ID}
 
ip link # attached to bridge
# vethxxx@ifx
ip -n ${INTERFACE_ID} # assignet do container
# eth0@ifx
 
ip -n ${NAMESPACE_ID} addr
 
docker run -p 8080:80 nginx # forward internal port 80 to host port 8080
#iptables -t nat -A PREROUTING -j DNAT --dport 8080 -to-destination 80
#iptables -t nat -A Docker -j DNAT --dport 8080 --to-destination 172.17.0.3:80
iptables -nvL -t nat

Terraform: OpenStack

OpenStack Providery
https://registry.terraform.io/providers/terraform-provider-openstack/openstack/latest/docs

# Configure the OpenStack Provider
provider "openstack" {
  user_name   = "admin"
  tenant_name = "admin"
  password    = "pwd"
  auth_url    = "http://myauthurl:5000/v2.0"
  region      = "RegionOne"
}
 
# cloud.yaml
provider "openstack" {
  cloud      = "dev-foo"
}

Router
https://registry.terraform.io/providers/terraform-provider-openstack/openstack/latest/docs/resources/networking_router_v2

resource "openstack_networking_router_v2" "router_1" {
  name       = "foo-router"
  external_network_id = "88934cac-8d55-40d5-8ff9-bde65011741d"
}
 
resource "openstack_networking_router_interface_v2" "terraform" {
  router_id = openstack_networking_router_v2.router_1.id
  subnet_id = openstack_networking_subnet_v2.subnet_1.id
}

Compute
https://registry.terraform.io/providers/terraform-provider-openstack/openstack/latest/docs/resources/compute_instance_v2

resource "openstack_compute_instance_v2" "basic" {
  name            = "basic"
  image_id        = "ad091b52-742f-469e-8f3c-fd81cadf0743"
  flavor_id       = "3"
  key_pair        = "my_key_pair_name"
  security_groups = ["default"]
 
  metadata = {
    this = "that"
  }
 
  network {
    name = "my_network"
  }
}

Image

RustDesk - free TeamViewer alternative

# install oracle jdk
wget -q --no-check-certificate https://raw.githubusercontent.com/panticz/installit/master/install.java-jdk.sh -O - | bash -

# install archiva
wget http://mirror.arcor-online.net/www.apache.org/archiva/2.1.1/binaries/apache-archiva-2.1.1-bin.tar.gz -P /tmp
tar xzf /tmp/apache-archiva-2.1.1-bin.tar.gz -C /opt
ln -s /opt/apache-archiva-2.1.1/ /opt/apache-archiva

# autostart
sed -i '$i /opt/apache-archiva/bin/archiva start' /etc/rc.local

# URL
http://YOUR_IP:8080/

# clear config
rm /opt/apache-archiva/conf/archiva.xml