Hello Jerzy ,
Is there a much more direct way to get just the value of *holderIdentity *?
My request :
http:
//172.29.240.172:8080/api/v1/namespaces/kube-system/endpoints/kube-controller-manager
This gives me :
{ "kind": "Endpoints", "apiVersion": "v1", "metadata": { "name":
"kube-controller-manager", "namespace": "kube-system", "selfLink":
"/api/v1/namespaces/kube-system/endpoints/kube-controller-manager", "uid":
"89e09aae-5dc6-11e7-89c1-0050569b569d", "resourceVersion": "19152",
"creationTimestamp": "2017-06-30T19:01:35Z", "annotations": {
"control-plane.alpha.kubernetes.io/leader":
"{\"holderIdentity\":\"master2\",\"leaseDurationSeconds\":15,\"acquireTime\":\"2017-06-30T19:01:35Z\",\"renewTime\":\"2017-06-30T19:18:01Z\",\"leaderTransitions\":0}"
} }, "subsets": [] }
I basically need to configure HAProxy based on the value of holderIdentity
On Tuesday, 14 February 2017 09:18:54 UTC-5, Jerzy Szczepkowski wrote:
>
> You can get it from endpoints resource. The endpoint should have an
> annotation pointing to the leader.
>
> $ kubectl get endpoints kube-controller-manager --namespace=kube-system
> -o yaml
>
> apiVersion: v1
> kind: Endpoints
> metadata:
> annotations:
> *control-plane.alpha.kubernetes.io/leader
> <http://control-plane.alpha.kubernetes.io/leader>*: '{"holderIdentity":"
> *kubernetes-master*
> ","leaseDurationSeconds":15,"acquireTime":"2017-02-14T14:05:57Z","renewTime":"2017-02-14T14:14:42Z","leaderTransitions":0}'
> ...
>
>
> Regards,
> Jerzy
>
> On Tue, Feb 14, 2017 at 2:27 PM, Qian Zhang <[email protected]
> <javascript:>> wrote:
>
>> Hi,
>>
>> I have a Kubernetes HA cluster which consists of 3 master nodes, each of
>> them has kube-apiserver, kube-scheduler and kube-controller-manager
>> running, and kube-scheduler and kube-controller-manager are started with
>> the option "--leader-elect", my question is, is there a way to tell the
>> current leader of kube-scheduler/kube-controller-manager? E.g., a
>> Kubernetes API to get such info? Or directly get it from etcd?
>>
>>
>> Thanks,
>> Qian Zhang
>>
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