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WIP: Add BGP DT03 IPv6
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eduolivares committed Aug 19, 2024
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2 changes: 2 additions & 0 deletions automation/mocks/bgp_dt03_ipv6.yaml
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---
cifmw_ci_gen_kustomize_values_primary_ip_version: 6
78 changes: 78 additions & 0 deletions automation/vars/bgp.yaml
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- name: edpm-deployment-values
src_file: values.yaml
build_output: edpm-deployment.yaml
bgp_dt03_ipv6:
stages:
- pre_stage_run:
- name: Apply taint on worker-3
type: cr
definition:
spec:
taints:
- effect: NoSchedule
key: testOperator
value: 'true'
- effect: NoExecute
key: testOperator
value: 'true'
kind: Node
resource_name: worker-3
state: patched
path: examples/dt/bgp/bgp_dt03_ipv6/control-plane/nncp
wait_conditions:
- >-
oc -n openstack wait nncp
-l osp/nncm-config-type=standard
--for jsonpath='{.status.conditions[0].reason}'=SuccessfullyConfigured
--timeout=60s
values:
- name: network-values
src_file: values.yaml
build_output: nncp.yaml

- path: examples/dt/bgp/bgp_dt03_ipv6/control-plane
wait_conditions:
- >-
oc -n openstack wait openstackcontrolplane
controlplane
--for condition=Ready
--timeout=30m
values:
- name: network-values
src_file: nncp/values.yaml
- name: service-values
src_file: service-values.yaml
build_output: control-plane.yaml

- path: examples/dt/bgp/bgp_dt03_ipv6/edpm/networkers
wait_conditions:
- >-
oc -n openstack wait openstackdataplanenodeset
networker-nodes
--for condition=SetupReady
--timeout=600s
values:
- name: edpm-networker-nodeset-values
src_file: values.yaml
build_output: edpm-networker-nodeset.yaml

- path: examples/dt/bgp/bgp_dt03_ipv6/edpm/computes
wait_conditions:
- >-
oc -n openstack wait openstackdataplanenodeset
compute-nodes
--for condition=SetupReady
--timeout=600s
values:
- name: edpm-compute-nodeset-values
src_file: values.yaml
build_output: edpm-compute-nodeset.yaml

- path: examples/dt/bgp/bgp_dt03_ipv6/edpm/deployment
wait_conditions:
- >-
oc -n openstack wait openstackdataplanedeployment
edpm-deployment
--for condition=Ready
--timeout=3800s
values:
- name: edpm-deployment-values
src_file: values.yaml
build_output: edpm-deployment.yaml
109 changes: 109 additions & 0 deletions examples/dt/bgp/bgp_dt03_ipv6/README.md
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# RHOSO Deployed Topology - BGP DT01 - Kernel routing and OVN NB DB driver

This document describes the first BGP Deployed Topology (DT), used to test the
BGP Dynamic Routing functionality on Red Hat OpenStack Services on OpenShift
(RHOSO).

The CRs included within this DT should be applied on an environment where EDPM
and OCP nodes are connected through a spine/leaf network. The BGP protocol
should be enabled on those spine and leaf routers.

## Purpose

This first BGP DT (DT01) tests default BGP configuration:
* Kernel routing (instead of OVN routing)
* OVN NB DB driver (instead of OVN SB DB driver)

The OCP cluster consists on the following nodes:
* 3 OCP master nodes
* 3 OCP worker nodes
* 1 OCP worker node with special configuration (OCP tester node)

This DT creates an OCP cluster that includes both master and worker nodes,
instead of the usual master/worker combo nodes. The reason for this is to run
disruptive tests only on the OCP workers, which host the Openstack Control
Plane services, avoiding potential issues when OCP master nodes are disrupted
that would not be relevant when testing RHOSO high availability scenarios.

The extra OCP worker (OCP tester) is needed to run tests from it because:
* disruptive tests can be run from this worker on the other workers without
affecting the test exection
* this worker is connected to the spine/leaf routers with a special routing
configuration, so that it can reach the Openstack provider network
The OCP tester is configured so that only test pods (created by the
Openstack test-operator) run on it.

This DT configures both compute and networker EDPM nodes. So far, networker
nodes are needed when BGP is used on RHOSO, in order to expose routes to SNAT
traffic (OVN Gateway IPs). In other words, when RHOSO is used with BGP, the OCP
workers cannot be configured as OVN Gateways.

The OCP and EDPM nodes deployed with this DT are distributed into three
different racks. Each rack is connected to two leaves.
Hence, the distribution of the nodes in the racks is the following one:
* rack0: compute-0, networker-0, ocp-master-0, ocp-worker-0, leaf-0, leaf-1
* rack1: compute-1, networker-1, ocp-master-1, ocp-worker-1, leaf-2, leaf-3
* rack2: compute-2, networker-2, ocp-master-2, ocp-worker-2, leaf-4, leaf-5

The OCP tester (ocp-worker-3) is not included into any rack. It is not
connected to any leaves, but to a router connected to the spines, due to the
reasons described before (it needs special connectivity to reach the provider
network).

## Node topology
| Node role | bm/vm | amount |
| ----------------------- | ----- | ------ |
| Openshift master nodes | vm | 3 |
| Openshift worker nodes | vm | 4 |
| Openstack Computes | vm | 3 |
| Openstack Networker | vm | 3 |
| Leaf routers | vm | 6 |
| Spine routers | vm | 2 |
| External routers | vm | 1 |
| Ansible Controller | vm | 1 |

### Networks

| Name | Type | CIDR |
| ------------------------ | -------- | ---------------- |
| Provisioning | untagged | 192.168.122.0/24 |
| Provider network | untagged | 192.168.133.0/24 |
| RH OSP | untagged | 192.168.111.0/24 |
| edpm/ocp to left leaves | untagged | 100.64.x.y/30 |
| edpm/ocp to right leaves | untagged | 100.65.x.y/30 |

## Services, enabled features and configurations

| Service | configuration | Lock-in coverage? |
| ---------------- | ---------------- | ------------------ |
| Glance | Swift | Must have |
| Swift | (default) | Must have |
| Octavia | (default) | Must have |
| Heat | (default) | Must have |
| frr | dataplane | Must have |
| ovn-bgp-agent | dataplane | Must have |

## Considerations/Constraints

1. Virtual networks should be created to connect the nodes to the routers.
2. All the VMs that are neither Openstack nor Openshift nodes, i.e. those that
act as routers, need to be properly configured in order to support the BGP
protocol.
3. The spine/leaf topology separates the overcloud nodes into different L2
network segments, called racks. Each rack includes two leaves, some OCP
nodes and some EDPM nodes.
4. A separate provisioning network is necessary to install Openstack on those
nodes.
5. Once Openstack is installed on them, dataplane connectivity is achieved
using the BGP protocol.
6. Tests are executed from the OCP worker to verify external connectivity.

## Stages

All stages must be executed in the order listed below. Everything is required unless otherwise indicated.

1. [Configure taints on the OCP worker](configure-taints.md)
2. [Install the OpenStack K8S operators and their dependencies](../../../common/)
3. [Apply metallb customization required to run a speaker pod on the OCP tester node](metallb/)
4. [Configuring networking and deploy the OpenStack control plane](control-plane.md)
5. [Configure and deploy the dataplane - networker and compute nodes](data-plane.md)
21 changes: 21 additions & 0 deletions examples/dt/bgp/bgp_dt03_ipv6/configure-taints.md
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# Apply taints on OCP tester node

This OCP worker node should not run any Openstack service apart from those
created by the test-operator.
It should also run a metallb's speaker pod, in order to obtain the proper
network configuration.
Due to this, taints should be configured on this worker.

Execute the following command:
```
oc patch node/worker-3 --type merge --patch '
spec:
taints:
- effect: NoSchedule
key: testOperator
value: "true"
- effect: NoExecute
key: testOperator
value: "true"
'
```
57 changes: 57 additions & 0 deletions examples/dt/bgp/bgp_dt03_ipv6/control-plane.md
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# Configuring networking and deploy the OpenStack control plane

## Assumptions

- A storage class called `local-storage` should already exist.
- An infrastructure of spine/leaf routers exists, is properly connected to the
OCP nodes and the routers are configured to support BGP.

## Initialize

Switch to the "openstack" namespace
```
oc project openstack
```
Change to the bgp_dt01/control-plane directory
```
cd architecture/examples/dt/bgp/bgp_dt01/control-plane
```
Edit the [nncp/values.yaml](control-plane/nncp/values.yaml) and
[service-values.yaml](control-plane/service-values.yaml) files to suit
your environment.
```
vi nncp/values.yaml
vi service-values.yaml
```

## Apply node network configuration

Generate the node network configuration
```
kustomize build nncp > nncp.yaml
```
Apply the NNCP CRs
```
oc apply -f nncp.yaml
```
Wait for NNCPs to be available
```
oc wait nncp -l osp/nncm-config-type=standard --for jsonpath='{.status.conditions[0].reason}'=SuccessfullyConfigured --timeout=300s
```

## Apply networking and control-plane configuration

Generate the control-plane and networking CRs.
```
kustomize build > control-plane.yaml
```
Apply the CRs
```
oc apply -f control-plane.yaml
```

Wait for control plane to be available
```
oc wait osctlplane controlplane --for condition=Ready --timeout=600s
```

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