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Posted to dev@flink.apache.org by Sampath Bhat <sa...@gmail.com> on 2018/03/19 06:56:09 UTC
Flink on Kubernetes issue
Hi
In the apache flink documentation
https://ci.apache.org/projects/flink/flink-docs-release-1.4/ops/deployment/kubernetes.html
The order of creating the deployment and services are incorrect. It is
mentioned in the order as follows-
kubectl create -f jobmanager-deployment.yaml
kubectl create -f taskmanager-deployment.yaml
kubectl create -f jobmanager-service.yaml
But this order of execution would fail if there is sufficient delay
between the execution of 2nd and 3rd command.
The reason being that the task manager is trying to connect to job manager
through service name which is still not up.
Ideally the order must be like this-
kubectl create -f jobmanager-deployment.yaml
kubectl create -f jobmanager-service.yaml
kubectl create -f taskmanager-deployment.yaml
Regards
Sampath
Re: Flink on Kubernetes issue
Posted by Sampath Bhat <sa...@gmail.com>.
Hi I have modified the documentation.
Please refer the link:
https://github.com/apache/flink/pull/5721
Let me know if I have to do any further action
On Mon, Mar 19, 2018 at 3:28 PM, Till Rohrmann <tr...@apache.org> wrote:
> Hi Sampath,
>
> you can find the file under flink/docs/ops/deployment/kubernetes.md. Feel
> free to apply the change and open a PR against Flink's repository.
>
> Cheers,
> Till
>
> On Mon, Mar 19, 2018 at 7:57 AM, Sampath Bhat <sa...@gmail.com>
> wrote:
>
> > Adding on, it would be great if this is updated. If given the permission
> > then I can change it myself.
> >
> > On Mon, Mar 19, 2018 at 12:26 PM, Sampath Bhat <sa...@gmail.com>
> > wrote:
> >
> > > Hi
> > >
> > > In the apache flink documentation
> > > https://ci.apache.org/projects/flink/flink-docs-
> > > release-1.4/ops/deployment/kubernetes.html
> > >
> > > The order of creating the deployment and services are incorrect. It is
> > > mentioned in the order as follows-
> > >
> > > kubectl create -f jobmanager-deployment.yaml
> > > kubectl create -f taskmanager-deployment.yaml
> > > kubectl create -f jobmanager-service.yaml
> > >
> > > But this order of execution would fail if there is sufficient delay
> > > between the execution of 2nd and 3rd command.
> > >
> > > The reason being that the task manager is trying to connect to job
> > manager
> > > through service name which is still not up.
> > >
> > > Ideally the order must be like this-
> > >
> > > kubectl create -f jobmanager-deployment.yaml
> > > kubectl create -f jobmanager-service.yaml
> > > kubectl create -f taskmanager-deployment.yaml
> > >
> > > Regards
> > >
> > > Sampath
> > >
> > >
> >
>
Re: Flink on Kubernetes issue
Posted by Till Rohrmann <tr...@apache.org>.
Hi Sampath,
you can find the file under flink/docs/ops/deployment/kubernetes.md. Feel
free to apply the change and open a PR against Flink's repository.
Cheers,
Till
On Mon, Mar 19, 2018 at 7:57 AM, Sampath Bhat <sa...@gmail.com>
wrote:
> Adding on, it would be great if this is updated. If given the permission
> then I can change it myself.
>
> On Mon, Mar 19, 2018 at 12:26 PM, Sampath Bhat <sa...@gmail.com>
> wrote:
>
> > Hi
> >
> > In the apache flink documentation
> > https://ci.apache.org/projects/flink/flink-docs-
> > release-1.4/ops/deployment/kubernetes.html
> >
> > The order of creating the deployment and services are incorrect. It is
> > mentioned in the order as follows-
> >
> > kubectl create -f jobmanager-deployment.yaml
> > kubectl create -f taskmanager-deployment.yaml
> > kubectl create -f jobmanager-service.yaml
> >
> > But this order of execution would fail if there is sufficient delay
> > between the execution of 2nd and 3rd command.
> >
> > The reason being that the task manager is trying to connect to job
> manager
> > through service name which is still not up.
> >
> > Ideally the order must be like this-
> >
> > kubectl create -f jobmanager-deployment.yaml
> > kubectl create -f jobmanager-service.yaml
> > kubectl create -f taskmanager-deployment.yaml
> >
> > Regards
> >
> > Sampath
> >
> >
>
Re: Flink on Kubernetes issue
Posted by Sampath Bhat <sa...@gmail.com>.
Adding on, it would be great if this is updated. If given the permission
then I can change it myself.
On Mon, Mar 19, 2018 at 12:26 PM, Sampath Bhat <sa...@gmail.com>
wrote:
> Hi
>
> In the apache flink documentation
> https://ci.apache.org/projects/flink/flink-docs-
> release-1.4/ops/deployment/kubernetes.html
>
> The order of creating the deployment and services are incorrect. It is
> mentioned in the order as follows-
>
> kubectl create -f jobmanager-deployment.yaml
> kubectl create -f taskmanager-deployment.yaml
> kubectl create -f jobmanager-service.yaml
>
> But this order of execution would fail if there is sufficient delay
> between the execution of 2nd and 3rd command.
>
> The reason being that the task manager is trying to connect to job manager
> through service name which is still not up.
>
> Ideally the order must be like this-
>
> kubectl create -f jobmanager-deployment.yaml
> kubectl create -f jobmanager-service.yaml
> kubectl create -f taskmanager-deployment.yaml
>
> Regards
>
> Sampath
>
>