5G Cloud Native Simulation with Open5Gs

M. Lutfi As syafii

Published in

btech-engineering

4 min readApr 17, 2023

Specification : Kubernetes, HELM, Istio, Open5Gs, ROOK, CEPH, Rancher

Lab Topology

Create Namespaces for practices

kubectl create ns open5gs

Install Service mesh Istio (optional)

curl -L https://istio.io/downloadIstio | sh -
cd istio-1.12.1
export PATH=$PWD/bin:$PATH
istioctl install --set profile=demo -y

Add a namespace label to instruct Istio to automatically inject Envoy sidecar proxies when you deploy your application later:

kubectl label namespace open5gs istio-injection=enabled

Install Addons packages

cd ~/istio-1.12.1/samples/addons
kubectl apply -f prometheus.yaml #for data sources monitoring
kubectl apply -f kiali.yaml #for dashboard visualization istio
kubectl apply -f jaeger.yaml #for tracing log
kubectl apply -f grafana.yaml #for dashboard monitoring (visualization)

Install Rancher (optional)

helm repo add rancher-latest https://releases.rancher.com/server-charts/latest
kubectl create namespace cattle-system

Install crds Cert Manager

kubectl apply -f https://github.com/jetstack/cert-manager/releases/download/v1.5.1/cert-manager.crds.yaml

Add the Jetstack Helm repository

helm repo add jetstack https://charts.jetstack.io

Update your local Helm chart repository cache

helm repo update

Install the cert-manager Helm chart

helm install cert-manager jetstack/cert-manager \
  --namespace cert-manager \
  --create-namespace \
  --version v1.5.1

kubectl get pods --namespace cert-manager

Install Rancher with Helm

helm install rancher rancher-latest/rancher \
  --namespace cattle-system \
  --set hostname=rancher.my.org \
  --set replicas=3

Wait for Rancher to be rolled out

kubectl -n cattle-system rollout status deploy/rancher

Verify that the Rancher Server is Successfully Deployed

kubectl -n cattle-system get deploy rancher

Install HELM

We use HELM for automatic deployment in kubernetes.

curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3
chmod 700 get_helm.sh
./get_helm.sh
helm version

Clone repo for simulation

cd ~
git clone https://bitbucket.org/infinitydon/opensource-5g-core-service-mesh.git
git clone https://github.com/Gradiant/openverso-charts.git

Configure AMF Services (optional)

This services if you want use NodePort & can access from external cluster.

cd ~/opensource-5g-core-service-mesh/helm-chart
sudo nano templates/amf-deploy.yaml

Uncomment in AMF service amf-open5gs-sctp

Changed sd to ffffff in amf-configmap

nano templates/amf-configmap.yaml

Change mongodb configuration

We will use ROOK Ceph for persistent volume, need comment existing persistent volume & add StorageClassName in persistent volume claim.

nano templates/mongodb.yaml

Deploy open5gs with helm-chart

cd ~/opensource-5g-core-service-mesh/helm-chart
helm -n open5gs install -f values.yaml open ./

Make sure all POD & Services already running

Register UE (User Equipment in Open5Gs dashboard)

Open dashboard use IP webui services 10.101.169.188

Username : admin
Password : 1423

IMSI : 208930000000001
Key : 465B5CE8B199B49FAA5F0A2EE238A6BC
OP : E8ED289DEBA952E4283B54E88E6183CA
opType: OPC
apn: internet
sst: 1
sd: "ffffff"

Configure UERANSIM (UE & gNB)

Install UERANSIM Helm depedency

cd ~ 
cd ~/openverso-charts/charts/ueransim 
helm dep update ./

Change value in UE

sudo nano values.yaml

mcc: '208'
mnc: '93'
tac: '7'

Change AMF Address in gNB

You must change address to AMF POD address, check with

kubectl get pod -o wide -n open5gs | grep amf

sudo nano resources/gnb.yaml

Running UERANSIM

helm -n open5gs install -f values.yaml ueransim ./
kubectl get pod -n open5gs | grep ueransim

Verify Logs UE Connected to gNB & AMF

AMF Logs

gNB Logs

UE Logs

Verify ping to Internet via Rancher dashboard

UE Container

Note : Bellow not show reply, because in TAP Interface (debian) not showing reply, we can see tcpdump in UPF POD.

ping 8.8.8.8 -I uesimtun0

UPF POD

We can see ICMP request reply, from UE IP Address & Google IP.

sudo apt install tcpdump
tcpdump -i ogstun

Grafana Dashboard

Istio Kiali Dashboard

Reference :

Originally published at https://luthfi.dev.