Tensorboard can be started multiple times for one project

[jrozansk]

Steps to reproduce:

1. Create a project.
2. Start tensorboard with polyaxon CLI.
   polyaxon project start_tensorboard
3. Use polyaxon CLI again to start another tensorboard within the same project.
4. Delete tensorboard twice.
   polyaxon project stop_tensorboard

Expected results:
It is up to authors how can it be handled.
Either not allowing creation of second tensorboard or possibility to choose which tensorboard to stop would be ok.

Actual results:
Only one tensorboard is stopped. Second remains running. Data scientists would be forced to approach k8s cluster and delete tensorboard manually.

Note: This occurs for version 0.0.3 released as chart.

[mmourafiq]

Hi @jrozansk, I noticed that issue as well, also there's security problem involved by giving access to tensorboard over LoadBalancer/Ingress.

In the coming version, I fixed the issue with the security, i.e. tensorboard will be subject to the same permissions sat on the project by the user, and will not be visible on a separate LoadBlancer/Ingress.

I also added the possibility to start jupyter notebooks in the same fashion.

More or less the logic for creating tensorboards / jupyter notebooks is different, but I will keep in mind to test this use case again.

[mmourafiq]

I am keeping this issue open, as I was able to reproduce it again.