[ovs-discuss] SB flows not being created in OVN K8 Stateful set
Brendan Doyle
brendan.doyle at oracle.com
Thu Aug 6 16:50:36 UTC 2020
OK, thanks for the pointers, I think we will eventually move to an OVN CNI
But for now I need to get this working.
On 06/08/2020 16:49, Girish Moodalbail wrote:
>
>
> On Thu, Aug 6, 2020 at 8:23 AM Brendan Doyle <brendan.doyle at oracle.com
> <mailto:brendan.doyle at oracle.com>> wrote:
>
>
>
> On 06/08/2020 16:19, Girish Moodalbail wrote:
>>
>>
>> On Thu, Aug 6, 2020 at 7:36 AM Brendan Doyle
>> <brendan.doyle at oracle.com <mailto:brendan.doyle at oracle.com>> wrote:
>>
>> OK thanks, perhaps Girish can comment, I thinking that the
>> steps are
>>
>> |# Create OVN namespace, service accounts, ovnkube-db
>> headless service, configmap, and policies kubectl create -f
>> $HOME/work/src/github.com/ovn-org/ovn-kubernetes/dist/yaml/ovn-setup.yaml
>> <http://github.com/ovn-org/ovn-kubernetes/dist/yaml/ovn-setup.yaml>
>> # Run ovnkube-db deployment. kubectl apply -f
>> $HOME/work/src/github.com/ovn-org/ovn-kubernetes/dist/yaml/
>> <http://github.com/ovn-org/ovn-kubernetes/dist/yaml/>||ovnkube-db-raft.yaml # Run ovnkube-master deployment.
>> kubectl create -f
>> $HOME/work/src/github.com/ovn-org/ovn-kubernetes/dist/yaml/ovnkube-master.yaml
>> <http://github.com/ovn-org/ovn-kubernetes/dist/yaml/ovnkube-master.yaml>
>> # Run ovnkube daemonset for nodes kubectl create -f
>> $HOME/work/src/github.com/ovn-org/ovn-kubernetes/dist/yaml/ovnkube-node.yaml
>> <http://github.com/ovn-org/ovn-kubernetes/dist/yaml/ovnkube-node.yaml>|
>>
>>
>> Yes, those are the steps to get OVN K8s CNI up and running with
>> OVN DB running in clustered mode.
>>
>> However, you also say below
>>
>>>> Note I don't want to replace flannel with OVN as the CNI, I just want to
>>>> run OVN central in a k8
>>>> StatefulSet, that use flannel as the CNI.
>>
>> So, my question is - What are you trying to do? How are you
>> mixing Flannel and OVN DBs?
>>
>> Do you want to run OVN DBs in clustered mode as a service (or K8s
>> application) using Flannel as the CNI for your K8s cluster?
>
> Yes I want to use Flannel as the CNI, and just have the clustered
> OVN DBs as a k8s Service. providing
> a HA OVN Central for ovn-controllers on hypervisors in my network.
> So it sounds like the above steps
> won't work for me and I have to hand craft/modify the raft yaml to
> start northd, but not use the
> rest of the yamls ?
>
>
> Providing Clustered OVN DBs as a service is not the goal of the
> ovn-kubernetes project. However, you can re-use a lot of the project's
> yamls and container entrypoint scripts to achieve what you want to do.
>
> 1. Apply the ovn-setup.yaml and ovnkube-db-raft.yaml like you captured
> above
> 2. Edit the ovnkube-master.yaml to only have ovn-northd container and
> nothing else and name it ovn-north.yaml. Apply this ovn-north.yaml.
> 3. Have all the ovn-controller instances in your network point to the
> OVN SB DB instances. The OVN DB Pods run with hostNetwork set to
> `true`, so they will not be on a flannel network and therefore will be
> accessible from your hypervisors directly.
>
>
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