Hi,

Actually it happens on all versions since we started developement.

We are currently on 1.10.6-gke.1, but it has always been like that.

I guess we can see easily in the system logs if kubernetes is being 
restarted?

Thanks
Ludovic

Le vendredi 7 septembre 2018 13:47:47 UTC+2, Aleksandra Malinowska a écrit :
>
> Hi,
>
> What is the Kubernetes master version of the affected cluster? Does this 
> happen every time when adding a new node, or just for a first node in the 
> new node pool?
>
> One reason Kubernetes API server may be temporarily unavailable is if it's 
> being restarted (this can happen e.g. due to configuration update, 
> auto-upgrade or resizing). Exact behavior depends on version and cluster 
> size (number of nodes), so it's hard to pinpoint the reason without this 
> information.
>
> Thanks,
> Aleksandra
>
> On Thursday, September 6, 2018 at 5:30:17 PM UTC+2, Ludovic Havet wrote:
>>
>> Here is more details on the problem.
>>
>> The idea behind it is to manually manage pods into the not default 
>> nodepool.
>>
>> The nodepool is created in autoscaling. It is not the default nodepool 
>> but an additional one created manually through gcloud api.
>>
>> When a pod is created in the nodepool and that there is no remaining 
>> ressource, autoscaling is acting and a new node is being created. 
>>
>> The problem is that the whole cluster hangs and its api is not accessible 
>> as long as the new node is being created for the nodepool. This means 
>> during about 1-2 minutes.
>>
>> It is as if kubernetes was not responding on the api, during one of its 
>> not default nodepool autoscaling.
>>
>> This does not happen when autoscaling is happening on the default 
>> nodepool.
>>
>> I think it is an issue with GKE.
>>
>> Any help would be appreciated :)
>>
>> Thanks!
>>
>>
>>
>>

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