Merge "OCP-Route: configuration and testing documentation"

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Zuul 2018-07-04 11:04:49 +00:00 committed by Gerrit Code Review
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@ -40,3 +40,4 @@ This section describes how you can install and configure kuryr-kubernetes
testing_connectivity
testing_nested_connectivity
containerized
ocp_route

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Enable OCP-Router functionality
===============================
To enable OCP-Router functionality we should set the following:
- Setting L7 Router.
- Configure Kuryr to support L7 Router and OCP-Route resources.
Setting L7 Router
------------------
The L7 Router is the ingress point for the external traffic destined
for services in the K8S/OCP cluster.
The next steps are needed for setting the L7 Router:
1. Create LoadBalancer that will run the L7 loadbalancing::
$ openstack loadbalancer create --name kuryr-l7-router --vip-subnet-id k8s-service-subnet
+---------------------+--------------------------------------+
| Field | Value |
+---------------------+--------------------------------------+
| admin_state_up | True |
| created_at | 2018-06-28T06:34:15 |
| description | |
| flavor | |
| id | 99f580e6-d894-442a-bc5f-4d14b41e10d2 |
| listeners | |
| name | kuryr-l7-router |
| operating_status | OFFLINE |
| pools | |
| project_id | 24042703aba141b89217e098e495cea1 |
| provider | amphora |
| provisioning_status | PENDING_CREATE |
| updated_at | None |
| vip_address | 10.0.0.171 |
| vip_network_id | 65875d24-5a54-43fb-91a7-087e956deb1a |
| vip_port_id | 42c6062a-644a-4004-a4a6-5a88bf596196 |
| vip_qos_policy_id | None |
| vip_subnet_id | 01f21201-65a3-4bc5-a7a8-868ccf4f0edd |
+---------------------+--------------------------------------+
$
2. Create floating IP address that should be accessible from external network::
$ openstack floating ip create --subnet public-subnet public
+---------------------+--------------------------------------+
| Field | Value |
+---------------------+--------------------------------------+
| created_at | 2018-06-28T06:31:36Z |
| description | |
| dns_domain | None |
| dns_name | None |
| fixed_ip_address | None |
| floating_ip_address | 172.24.4.3 |
| floating_network_id | 3371c2ba-edb5-45f2-a589-d35080177311 |
| id | c971f6d3-ba63-4318-a9e7-43cbf85437c2 |
| name | 172.24.4.3 |
| port_details | None |
| port_id | None |
| project_id | 24042703aba141b89217e098e495cea1 |
| qos_policy_id | None |
| revision_number | 0 |
| router_id | None |
| status | DOWN |
| subnet_id | 939eeb1f-20b8-4185-a6b1-6477fbe73409 |
| tags | [] |
| updated_at | 2018-06-28T06:31:36Z |
+---------------------+--------------------------------------+
$
3. Bind the floating IP to LB vip::
[stack@gddggd devstack]$ openstack floating ip set --port 42c6062a-644a-4004-a4a6-5a88bf596196 172.24.4.3
Configure Kuryr to support L7 Router and OCP-Route resources
------------------------------------------------------------
1. Configure the L7 Router by adding the LB UUID at kuryr.conf::
[ingress]
l7_router_uuid = 99f580e6-d894-442a-bc5f-4d14b41e10d2
2. Enable the ocp-route and k8s-endpoint handlers. For that you need to add
this handlers to the enabled handlers list at kuryr.conf (details on how
to edit this for containerized deployment can be found
at :doc:`./devstack/containerized`)::
[kubernetes]
enabled_handlers=vif,lb,lbaasspec,ocproute,ingresslb
Note: you need to restart the kuryr controller after applying the above
detailed steps. For devstack non-containerized deployments::
sudo systemctl restart devstack@kuryr-kubernetes.service
And for containerized deployments::
kubectl -n kube-system get pod | grep kuryr-controller
kubectl -n kube-system delete pod KURYR_CONTROLLER_POD_NAME
For directly enabling both L7 router and OCP-Route handlers when deploying
with devstack, you just need to add the following at local.conf file::
KURYR_ENABLE_INGRESS=True
KURYR_ENABLED_HANDLERS=vif,lb,lbaasspec,ocproute,ingresslb
Testing OCP-Route functionality
-------------------------------
1. Create a service::
$ oc run --image=celebdor/kuryr-demo kuryr-demo
$ oc scale dc/kuryr-demo --replicas=2
$ oc expose dc/kuryr-demo --port 80 --target-port 8080
2. Create a Route object pointing to above service (kuryr-demo)::
$ cat >> route.yaml << EOF
> apiVersion: v1
> kind: Route
> metadata:
> name: testroute
> spec:
> host: www.firstroute.com
> to:
> kind: Service
> name: kuryr-demo
> EOF
$ oc create -f route.yaml
3. Curl L7 router's FIP using specified hostname::
$ curl --header 'Host: www.firstroute.com' 172.24.4.3
kuryr-demo-1-gzgj2: HELLO, I AM ALIVE!!!
$