This document describes how to set up SEBA-in-a-Box (SiaB). SiaB is a functional SEBA pod capable of running E2E tests. It takes about 10 minutes to install on a physical server or VM.
The default configuration of SiaB incorporates an emulated OLT/ONU provided by Ponsim and an emulated AGG switch provided by Mininet. Mininet is also configured with a host that stands in as the BNG and runs a DHCP server. The Ponsim setup installs a single OLT, ONU, and RG. The RG is able to authenticate itself via 802.1x, run dhclient to get an IP address from the DHCP server in Mininet, and finally ping the BNG. This demonstrates end-to-end connectivity between the RG and BNG via the ONU, OLT, and agg switch.
This page describes how to set up SiaB with a physical switch instead of an emulated Mininet topology. An external server running DHCP services connected to the switch acts as the BNG.
Before installing SiaB, you need a Kubernetes cluster (can be a single node) with the Calico CNI plugin installed. You also need Helm and a few other software packages.
The server or VM on which you are installing SEBA-in-a-Box should have at least two CPU cores, 8GB RAM, and 30GB disk space. Apparmor and SELinux should be disabled.
You need to have Kubernetes with CNI enabled. An easy way to set up a single-node Kubernetes that meets the requirements is with kubeadm. Instructions for installing kubeadm on various platforms can be found [here](https://www.google.com/url?q=https://kubernetes.io/docs/setup/inde pendent/install-kubeadm/&sa=D&ust=1542238113244000).
NOTE: the setup has not been made to work with minikube; we recommend installing kubeadm instead.
Here’s an example of installing kubeadm on an Ubuntu 16.04 server:
echo "Installing docker..." sudo apt-get update sudo apt-get install -y software-properties-common sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 0EBFCD88 sudo add-apt-repository \ "deb [arch=amd64] https://download.docker.com/linux/ubuntu \ $(lsb_release -cs) \ stable" sudo apt-get update sudo apt-get install -y "docker-ce=17.03*" echo "Installing kubeadm..." sudo apt-get update sudo apt-get install -y ebtables ethtool apt-transport-https curl curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add - cat <<EOF >/tmp/kubernetes.list deb http://apt.kubernetes.io/ kubernetes-xenial main EOF sudo cp /tmp/kubernetes.list /etc/apt/sources.list.d/kubernetes.list sudo apt-get update sudo apt install -y "kubeadm=1.11.3-*" "kubelet=1.11.3-*" "kubectl=1.11.3-*" sudo swapoff -a sudo kubeadm init --pod-network-cidr=192.168.0.0/16 mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config
If running on a single node, taint the master node so that we can schedule pods on it:
kubectl taint nodes --all node-role.kubernetes.io/master-
Install the Calico CNI plugin in Kubernetes:
kubectl apply -f \ https://docs.projectcalico.org/v2.6/getting-started/kubernetes/installation/hosted/kubeadm/1.6/calico.yaml
An example of installing Helm:
echo "Installing helm..." curl https://raw.githubusercontent.com/kubernetes/helm/master/scripts/get | bash cat > /tmp/helm.yaml <<EOF apiVersion: v1 kind: ServiceAccount metadata: name: helm namespace: kube-system --- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: ClusterRoleBinding metadata: name: helm roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: cluster-admin subjects: - kind: ServiceAccount name: helm namespace: kube-system EOF kubectl create -f /tmp/helm.yaml helm init --service-account helm helm repo add incubator https://kubernetes-charts-incubator.storage.googleapis.com/
Install the http and jq commands. Run: sudo apt install -y httpie jq
Before we can start installing SEBA components, we need to get the charts.
mkdir -p cord cd cord git clone https://gerrit.opencord.org/helm-charts
Run these commands:
cd ~/cord/helm-charts helm repo add incubator http://storage.googleapis.com/kubernetes-charts-incubator helm install -n cord-kafka -f examples/kafka-single.yaml incubator/kafka # Wait for Kafka to come up kubectl wait pod/cord-kafka-0 --for condition=Ready --timeout=180s helm install -n onos -f configs/onos.yaml onos
Run these commands to install VOLTHA:
cd ~/cord/helm-charts # Install the etcd-operator helm chart: helm install -n etcd-operator stable/etcd-operator --version 0.8.0 # Allow etcd-operator enough time to create the EtdcCluster # CustomResourceDefinitions. This should only be a couple of seconds after the # etcd-operator pods are running. Check the CRD are ready by running the following: kubectl get crd | grep etcd # After EtcdCluster CRD is in place helm dep up voltha helm install -n voltha -f configs/seba-ponsim.yaml voltha
Before proceeding
Run: kubectl get pod|grep etcd-cluster
You should see the etcd-cluster pod up and running.
$ kubectl get pod|grep etcd-cluster etcd-cluster-0000 1/1 Running 0 20m
Run these commands to install Ponsim (after installing VOLTHA):
cd ~/cord/helm-charts helm install -n ponnet ponnet # Wait for CNI changes ~/cord/helm-charts/scripts/wait_for_pods.sh kube-system helm install -n ponsimv2 ponsimv2 # Iptables setup sudo iptables -P FORWARD ACCEPT
Before proceeding
Run: kubectl -n voltha get pod
Make sure that all of the pods in the voltha namespace are in Running state.
$ kubectl -n voltha get pod NAME READY STATUS RESTARTS AGE default-http-backend-846b65fb5f-rklfb 1/1 Running 0 6h freeradius-765c9b486c-6qs7t 1/1 Running 0 6h netconf-7d7c96c88b-29cv2 1/1 Running 0 6h nginx-ingress-controller-6db99757f7-d9cpk 1/1 Running 0 6h ofagent-7d7b854cd4-fx6gq 1/1 Running 0 6h olt-5455744678-hqbwh 1/1 Running 0 6h onu-5df655b9c9-prfjz 1/1 Running 0 6h rg-75845c54bc-fjgrf 1/1 Running 0 6h vcli-6875544cf-rfdrh 1/1 Running 0 6h vcore-0 1/1 Running 0 6h voltha-546cb8fd7f-5n9x4 1/1 Running 3 6h
If you see the olt pod in CrashLoopBackOff state, try deleting (helm delete --purge) and reinstalling the ponsimv2 chart.
Run these commands to install Mininet:
cd ~/cord/helm-charts sudo modprobe openvswitch helm install -n mininet mininet
After the Mininet pod is running, you can get to the mininet> prompt using:
kubectl attach -ti deployment.apps/mininet
To detach press Ctrl-P Ctrl-Q.
Before proceeding
Run: brctl show
You should see two interfaces on each of the pon0 and pon1 Linux bridges.
$ brctl show bridge name bridge id STP enabled interfaces docker0 8000.02429d07b4e2 no pon0 8000.bec4912b1f6a no veth25c1f40b veth2a4c914f pon1 8000.0a580a170001 no veth3cc603fe vethb6820963
This is necessary to enable the RG to authenticate. Run these commands:
echo 8 > /tmp/pon0_group_fwd_mask sudo cp /tmp/pon0_group_fwd_mask /sys/class/net/pon0/bridge/group_fwd_mask
Run these commands:
cd ~/cord/helm-charts helm dep update xos-core helm install -n xos-core xos-core helm dep update xos-profiles/att-workflow helm install -n att-workflow -f configs/seba-ponsim.yaml xos-profiles/att-workflow
Before proceeding
Run: kubectl get pod
You should see all the NEM pods in Running state, except the att-workflow-tosca-loader pod which should eventually be in Completed state. The latter may go through CrashLoopBackOff state and get restarted a few times first (less than 10). To wait until this occurs you can run:
~/cord/helm-charts/scripts/wait_for_pods.sh
Run this commands:
helm install -n ponsim-pod xos-profiles/ponsim-pod
Before proceeding
Wait for the ponsim-pod container to reach Completed state, then log into the XOS GUI at http://<hostname>:30001 (credentials: admin@opencord.org / letmein). You should see an AttWorkflowDriver Service Instance with authentication state AWAITING.
To automatically check for this condition you can run:
http -a admin@opencord.org:letmein GET \ http://127.0.0.1:30001/xosapi/v1/att-workflow-driver/attworkflowdriverserviceinstances | \ jq '.items[0].authentication_state' | grep AWAITING
Right now it’s necessary to install some custom configuration to ONOS directly. Run this command:
http -a karaf:karaf POST \ http://127.0.0.1:30120/onos/v1/configuration/org.opencord.olt.impl.Olt defaultVlan=65535
The above command instructs the ONU to exchange untagged packets with the RG, rather than packets tagged with VLAN 0.
At this point the system should be fully installed and functional.
Enter the RG pod in the voltha namespace:
RG_POD=$( kubectl -n voltha get pod -l "app=rg" -o jsonpath='{.items[0].metadata.name}' ) kubectl -n voltha exec -ti $RG_POD bash
Inside the pod, run this command:
wpa_supplicant -i eth0 -Dwired -c /etc/wpa_supplicant/wpa_supplicant.conf
You should see output like the following:
$ wpa_supplicant -i eth0 -Dwired -c /etc/wpa_supplicant/wpa_supplicant.conf Successfully initialized wpa_supplicant eth0: Associated with 01:80:c2:00:00:03 WMM AC: Missing IEs eth0: CTRL-EVENT-EAP-STARTED EAP authentication started eth0: CTRL-EVENT-EAP-PROPOSED-METHOD vendor=0 method=4 eth0: CTRL-EVENT-EAP-METHOD EAP vendor 0 method 4 (MD5) selected eth0: CTRL-EVENT-EAP-SUCCESS EAP authentication completed successfully
Hit Ctrl-C after this point to get back to the shell prompt.
Before proceeding
In the XOS GUI, the AttDriverWorkflow Service Instance should now be in APPROVED state. You can check for this by running:
http -a admin@opencord.org:letmein GET \ http://127.0.0.1:30001/xosapi/v1/att-workflow-driver/attworkflowdriverserviceinstances | \ jq '.items[0].authentication_state' | grep APPROVED
The FabricCrossconnect Service Instance should have a check in the Backend status column. You can check for this by running:
http -a admin@opencord.org:letmein GET \ http://127.0.0.1:30001/xosapi/v1/fabric-crossconnect/fabriccrossconnectserviceinstances | \ jq '.items[0].backend_status'|grep OK
Run the following commands inside the RG pod.
ifconfig eth0 0.0.0.0 dhclient
You should see output like the following:
$ dhclient mv: cannot move '/etc/resolv.conf.dhclient-new.46' to '/etc/resolv.conf': Device or resource busy
You can ignore the Device or resource busy errors. The issue is that /etc/resolv.conf is mounted into the RG container by Kubernetes and dhclient wants to overwrite it.
Before proceeding
Make sure that eth0 inside the RG container has an IP address on the 172.18.0.0/24 subnet:
$ ifconfig eth0 eth0 Link encap:Ethernet HWaddr 0a:58:0a:16:00:06 inet addr:172.18.0.54 Bcast:172.18.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:600 errors:0 dropped:559 overruns:0 frame:0 TX packets:15 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:57517 (57.5 KB) TX bytes:3042 (3.0 KB)
The emulated BNG has an IP address of 172.18.0.10. After successfully running dhclient you should be able to ping it from the RG.
$ ping -c 3 172.18.0.10 PING 172.18.0.10 (172.18.0.10) 56(84) bytes of data. 64 bytes from 172.18.0.10: icmp_seq=1 ttl=64 time=34.9 ms 64 bytes from 172.18.0.10: icmp_seq=2 ttl=64 time=39.6 ms 64 bytes from 172.18.0.10: icmp_seq=3 ttl=64 time=37.4 ms --- 172.18.0.10 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2002ms rtt min/avg/max/mdev = 34.940/37.343/39.615/1.917 ms
That’s it. Currently it’s not possible to send traffic to destinations on the Internet.
A Makefile can be used to install SEBA-in-a-Box in an automated manner on an Ubuntu 16.04 system. To try it out:
mkdir -p ~/cord cd ~/cord git clone https://gerrit.opencord.org/automation-tools cd automation-tools/seba-in-a-box
To build a “stable” version of SiaB that uses the service versions specified in the Helm charts:
make stable # or just ‘make’
To build a SiaB that uses the latest development code:
make latest
After a successful install, you will see the message:
SEBA-in-a-Box installation finished!
If the install fails for some reason, you can re-run the make command and the install will try to resume where it left off.
You can optionally install the logging and nem-monitoring charts during the installation by passing one or both of them (space delimited) via the INFRA_CHARTS variable. E.g.:
make INFRA_CHARTS='logging nem-monitoring' stable
To run the E2E ping test described above, as well as tests of other SEBA functionality, you can run:
make run-tests
Report any problems to acb on the CORD Slack channel.