Getting started¶
In this tutorial, we will deploy and run an SD-Core 5G core network using Juju and Terraform. As part of this tutorial, we will also deploy additional components:
gNB Simulator: a 5G radio and a cellphone simulator,
SD-Core Router: a software router facilitating communication between the core and the Radio Access Network (RAN) to simulate usage of this network.
Both gNB Simulator and SD-Core Router serve only demonstration purposes and shouldn’t be part of production deployments.
To complete this tutorial, you will need a machine which meets the following requirements:
A recent
x86_64CPU (Intel 4ᵗʰ generation or newer, or AMD Ryzen or newer)At least 4 cores
8GB of RAM
50GB of free disk space
1. Install MicroK8s¶
From your terminal, install MicroK8s:
sudo snap install microk8s --channel=1.27-strict/stable
Add your user to the snap_microk8s group:
sudo usermod -a -G snap_microk8s $USER
newgrp snap_microk8s
Add the community repository MicroK8s addon:
sudo microk8s addons repo add community https://github.com/canonical/microk8s-community-addons --reference feat/strict-fix-multus
Enable the following MicroK8s addons. We must give MetalLB an address range that has at least 3 IP addresses for Charmed Aether SD-Core.
sudo microk8s enable hostpath-storage
sudo microk8s enable multus
sudo microk8s enable metallb:10.0.0.2-10.0.0.4
2. Bootstrap a Juju controller¶
From your terminal, install Juju.
sudo snap install juju --channel=3.4/stable
Bootstrap a Juju controller
juju bootstrap microk8s
Note
There is a bug in Juju that occurs when
bootstrapping a controller on a new machine. If you encounter it, create the following
directory:
mkdir -p /home/ubuntu/.local/share
3. Install Terraform¶
From your terminal, install Terraform.
sudo snap install terraform --classic
4. Deploy Charmed Aether SD-Core¶
On the host machine create a new directory called terraform:
mkdir terraform
Inside newly created terraform directory create a terraform.tf file:
cd terraform
cat << EOF > versions.tf
terraform {
required_providers {
juju = {
source = "juju/juju"
version = ">= 0.12.0"
}
}
}
EOF
Create a Terraform module containing the SD-Core 5G core network and a router:
cat << EOF > main.tf
resource "juju_model" "sdcore" {
name = "sdcore"
}
module "sdcore-router" {
source = "git::https://github.com/canonical/sdcore-router-k8s-operator//terraform"
model = juju_model.sdcore.name
depends_on = [juju_model.sdcore]
}
module "sdcore" {
source = "git::https://github.com/canonical/terraform-juju-sdcore//modules/sdcore-k8s"
model = juju_model.sdcore.name
depends_on = [module.sdcore-router]
traefik_config = {
routing_mode = "subdomain"
}
}
EOF
Note
You can get a ready example by cloning this Git repository.
All necessary files are in the examples/terraform/getting_started directory.
Initialize Juju Terraform provider:
terraform init
Deploy SD-Core by applying your Terraform configuration:
terraform apply -auto-approve
The deployment process should take approximately 15-20 minutes.
Monitor the status of the deployment:
juju switch sdcore
watch -n 1 -c juju status --color --relations
The deployment is ready when all the charms are in the Active/Idle state.
It is normal for grafana-agent to remain in waiting state.
It is also expected that traefik goes to the error state (related Traefik bug).
Example:
ubuntu@host:~$ juju status
Model Controller Cloud/Region Version SLA Timestamp
sdcore microk8s-localhost microk8s-classic/localhost 3.4.5 unsupported 08:08:50Z
App Version Status Scale Charm Channel Rev Address Exposed Message
amf 1.4.4 active 1 sdcore-amf-k8s 1.5/edge 707 10.152.183.176 no
ausf 1.4.2 active 1 sdcore-ausf-k8s 1.5/edge 520 10.152.183.65 no
grafana-agent 0.32.1 waiting 1 grafana-agent-k8s latest/stable 45 10.152.183.221 no installing agent
mongodb active 1 mongodb-k8s 6/beta 38 10.152.183.92 no Primary
nms 1.0.0 active 1 sdcore-nms-k8s 1.5/edge 580 10.152.183.141 no
nrf 1.4.1 active 1 sdcore-nrf-k8s 1.5/edge 580 10.152.183.130 no
nssf 1.4.1 active 1 sdcore-nssf-k8s 1.5/edge 462 10.152.183.62 no
pcf 1.4.3 active 1 sdcore-pcf-k8s 1.5/edge 512 10.152.183.144 no
router active 1 sdcore-router-k8s 1.5/edge 341 10.152.183.218 no
self-signed-certificates active 1 self-signed-certificates latest/stable 155 10.152.183.33 no
smf 1.5.2 active 1 sdcore-smf-k8s 1.5/edge 590 10.152.183.64 no
traefik v2.11.0 waiting 1 traefik-k8s latest/stable 194 10.152.183.198 no installing agent
udm 1.4.3 active 1 sdcore-udm-k8s 1.5/edge 489 10.152.183.31 no
udr 1.4.1 active 1 sdcore-udr-k8s 1.5/edge 486 10.152.183.82 no
upf 1.4.0 active 1 sdcore-upf-k8s 1.5/edge 591 10.152.183.164 no
Unit Workload Agent Address Ports Message
amf/0* active idle 10.1.10.181
ausf/0* active idle 10.1.10.186
grafana-agent/0* blocked idle 10.1.10.133 grafana-cloud-config: off, logging-consumer: off
mongodb/0* active idle 10.1.10.155 Primary
nms/0* active idle 10.1.10.174
nrf/0* active idle 10.1.10.151
nssf/0* active idle 10.1.10.136
pcf/0* active idle 10.1.10.146
router/0* active idle 10.1.10.145
self-signed-certificates/0* active idle 10.1.10.141
smf/0* active idle 10.1.10.154
traefik/0* error idle 10.1.10.160 hook failed: "ingress-relation-changed"
udm/0* active idle 10.1.10.187
udr/0* active idle 10.1.10.176
upf/0* active idle 10.1.10.169
5. Configure the ingress¶
Get the external IP address of Traefik’s traefik-lb LoadBalancer service:
microk8s.kubectl -n sdcore get svc | grep "traefik-lb"
The output should look similar to below:
ubuntu@host:~/terraform$ microk8s.kubectl -n private5g get svc | grep "traefik-lb"
traefik-lb LoadBalancer 10.152.183.142 10.0.0.4 80:32435/TCP,443:32483/TCP 11m
In this tutorial, the IP is 10.0.0.4. Please note it, as we will need it in the next step.
Configure Traefik to use an external hostname. To do that, edit traefik_config
in the main.tf file:
:caption: main.tf
(...)
module "sdcore" {
(...)
traefik_config = {
routing_mode = "subdomain"
external_hostname = "10.0.0.4.nip.io"
}
(...)
}
(...)
Apply new configuration:
terraform apply -auto-approve
Resolve Traefik error in Juju:
juju resolve traefik/0
6. Deploy the gNodeB and a cellphone simulator¶
Inside the terraform directory create a new module:
cat << EOF > ran.tf
resource "juju_model" "ran-simulator" {
name = "ran"
}
module "gnbsim" {
source = "git::https://github.com/canonical/sdcore-gnbsim-k8s-operator//terraform"
model = juju_model.ran-simulator.name
depends_on = [module.sdcore-router]
}
resource "juju_offer" "gnbsim-fiveg-gnb-identity" {
model = juju_model.ran-simulator.name
application_name = module.gnbsim.app_name
endpoint = module.gnbsim.provides.fiveg_gnb_identity
}
resource "juju_integration" "gnbsim-amf" {
model = juju_model.ran-simulator.name
application {
name = module.gnbsim.app_name
endpoint = module.gnbsim.requires.fiveg_n2
}
application {
offer_url = module.sdcore.amf_fiveg_n2_offer_url
}
}
resource "juju_integration" "gnbsim-nms" {
model = juju_model.sdcore.name
application {
name = module.sdcore.nms_app_name
endpoint = module.sdcore.fiveg_gnb_identity_endpoint
}
application {
offer_url = juju_offer.gnbsim-fiveg-gnb-identity.url
}
}
EOF
Initialize Juju Terraform provider:
terraform init
Apply new configuration:
terraform apply -auto-approve
Monitor the status of the deployment:
juju switch ran
watch -n 1 -c juju status --color --relations
The deployment is ready when the gnbsim application is in the Active/Idle state.
Example:
ubuntu@host:~/terraform $ juju status
Model Controller Cloud/Region Version SLA Timestamp
ran microk8s-localhost microk8s/localhost 3.4.3 unsupported 12:18:26+02:00
SAAS Status Store URL
amf active local admin/sdcore.amf
App Version Status Scale Charm Channel Rev Address Exposed Message
gnbsim 1.4.3 active 1 sdcore-gnbsim-k8s 1.5/edge 557 10.152.183.209 no
Unit Workload Agent Address Ports Message
gnbsim/0* active idle 10.1.194.238
Offer Application Charm Rev Connected Endpoint Interface Role
gnbsim gnbsim sdcore-gnbsim-k8s 557 1/1 fiveg_gnb_identity fiveg_gnb_identity provider
7. Configure the 5G core network through the Network Management System¶
Retrieve the NMS address:
juju switch sdcore
juju run traefik/0 show-proxied-endpoints
The output should be http://sdcore-nms.10.0.0.4.nip.io/. Navigate to this address in your
browser.
In the Network Management System (NMS), create a network slice with the following attributes:
Name:
defaultMCC:
001MNC:
01UPF:
upf-external.sdcore.svc.cluster.local:8805gNodeB:
sdcore-gnbsim-gnbsim
You should see the following network slice created:
Create a subscriber with the following attributes:
IMSI:
001010100007487OPC:
981d464c7c52eb6e5036234984ad0bcfKey:
5122250214c33e723a5dd523fc145fc0Sequence Number:
16f3b3f70fc2Network Slice:
defaultDevice Group:
default-default
You should see the following subscriber created:
8. Run the 5G simulation¶
Run the simulation:
juju switch ran
juju run gnbsim/leader start-simulation
The simulation executed successfully if you see success: "true" as one of the output messages:
ubuntu@host:~$ juju run gnbsim/leader start-simulation
Running operation 1 with 1 task
- task 2 on unit-gnbsim-0
Waiting for task 2...
info: 5/5 profiles passed
success: "true"
9. Destroy the environment¶
Destroy Terraform deployment:
terraform destroy -auto-approve
Note
Terraform does not remove anything from the working directory. If needed, please clean up
the terraform directory manually by removing everything except for the main.tf
and terraform.tf files.
Destroy the Juju controller and all its models:
juju kill-controller microk8s-localhost