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

nextcloud

# install nextcloud with snap
snap install nextcloud
 
# set domain
nextcloud.occ config:system:set trusted_domains 0 --value="nextcloud.example.com"

Microsoft teams under Linux / Ubuntu

Install Microsoft Teams

wget https://packages.microsoft.com/keys/microsoft.asc -qO-| sudo apt-key add -
sudo sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/repos/ms-teams stable main" > /etc/apt/sources.list.d/teams.list'
sudo apt update
sudo apt install -y teams

Ansible

cat <<EOF> /tmp/teams.yml
---
- hosts: localhost
  tasks:
    - name: Add teams APT key
      apt_key:
        url: https://packages.microsoft.com/keys/microsoft.asc
      become: yes
 
    - name: Add teams repository
      apt_repository:
        repo: "deb [arch=amd64] https://packages.microsoft.com/repos/ms-teams stable main"
      become: yes
 
    - name: Install teams
      apt:
        update_cache: yes
        name: teams
      become: yes
EOF
 
ansible-playbook /tmp/teams.yml --ask-become-pass

Install by snap

sudo snap install teams

2Factor authentification
# Google Authentificaor
https://blog.paranoidpenguin.net/2018/06/office-365-multi-factor-authentication-with-google-authenticator/

# Microsoft Authenticator for Android
https://play.google.com/store/apps/details?id=com.azure.authenticator

Webclient
https://teams.microsoft.com

Links
https://docs.microsoft.com/de-de/microsoftteams/get-clients

WireGuard

Server

sudo apt install -y wireguard
 
cd /etc/wireguard
umask 077;
wg genkey | tee privatekey | wg pubkey > publickey
 
/etc/wireguard/wg0.conf
[Interface]
Address = 192.168.6.1/24
ListenPort = 1194
PrivateKey = qz3LQkTEA8tOJEORyUxT2w2SIwdXwCLcO7joKq58tUs=
PostUp = iptables -A FORWARD -i %i -j ACCEPT; iptables -A FORWARD -o %i -j ACCEPT; iptables -t nat -A POSTROUTING -o ens3 -j MASQUERADE
PostDown = iptables -D FORWARD -i %i -j ACCEPT; iptables -D FORWARD -o %i -j ACCEPT; iptables -t nat -D POSTROUTING -o ens3 -j MASQUERADE     
 
[Peer]
PublicKey = wL+h2EqxaQpcWgwO8SIXPGqhHgssvj9xqjHAPjYLJ28=
AllowedIPs = 192.168.6.2/32
 
sudo ufw allow 1194/udp
sudo ufw status
 
sudo systemctl enable wg-quick@wg0
sudo systemctl start wg-quick@wg0
sudo systemctl status wg-quick@wg0
 
# watch connections
watch -n1 wg

Client

Kubernetes the hard way

Links
https://github.com/kelseyhightower/kubernetes-the-hard-way

Configure OpenStack application credentials

mkdir -p ~/.config/openstack
 
cat <<EOF> ~/.config/openstack/clouds.yaml
clouds:
  dev-foo:
    auth_type: "v3applicationcredential"
    auth:
      auth_url: https://keystone.service.dev.example.com/v3
      application_credential_id: "YOUR_CREDENTIAL_ID"
      application_credential_secret: "YOUR_CREDENTIAL_PASS"
EOF

Install Terraform

cat <<EOF> /tmp/install-terraform.yml 
---
- hosts: localhost
  tasks:
    - name: Get latest Terraform version
      uri:
        url: https://checkpoint-api.hashicorp.com/v1/check/terraform
      register: response
 
    - set_fact:
        terraform_download_url: "{{ response.json.current_download_url }}"
        terraform_version: "{{ response.json.current_version }}"
 
    - name: Download Terraform {{ terraform_version }}
      unarchive:
        src: "{{ terraform_download_url }}terraform_{{ terraform_version }}_{{ ansible_system | lower }}_amd64.zip"
        remote_src: yes
        dest: ~/bin
        creates: ~/bin/terraform
        mode: 0550
EOF
 
ansible-playbook /tmp/install-terraform.yml

Create test env on OpenStack

OpenStack: Octavia / Amphora LB check

#!/bin/bash
 
source /etc/kolla/admin-openrc.sh
 
 
function show_lb_owner() {
    LB_ID=$1
 
    # show project
    PROJECT_ID=$(openstack loadbalancer show -c project_id -f value ${LB_ID})
    PROJECT_NAME=$(openstack project show -c name -f value ${PROJECT_ID})
 
    # show domain
    DOMAIN_ID=$(openstack project show -c domain_id -f value ${PROJECT_ID})
    DOMAIN_NAME=$(openstack domain show -c name -f value ${DOMAIN_ID})
 
    echo "Domain: ${DOMAIN_NAME}"
    echo "Project: ${PROJECT_NAME}"
}
 
 
EXIT_CODE=0
 
 
# list broken LB
OUTPUT="$(openstack loadbalancer amphora list --provisioning-status ERROR)"
if [ -n "${OUTPUT}" ]; then
    echo "${OUTPUT}"
 
    EXIT_CODE=1
fi
 
# search for broken LB