Re: [kubernetes-users] Looking for service pool managing solution

[Rodrigo Campos]

Not sure it's simpler, nor what you mean with tags.

But yeah, you can create pods via the API, count, or use quota limits if
you prefer, too.

Let's simplify it: try and report back ;)

Seriously, I think that would be the easiest and fastest thing to do.

On Thursday, May 17, 2018,  wrote:

> Let's simplify it:
> can I write 5 different pod yamls, put in it a kind of "tag" and write an
> API request (request should have "tag" value) that will run ONE random pod
> from those 5?
>
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Re: [kubernetes-users] Looking for service pool managing solution

[tomasz . szandala]

Let's simplify it:
can I write 5 different pod yamls, put in it a kind of "tag" and write an API 
request (request should have "tag" value) that will run ONE random pod from 
those 5?

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Re: [kubernetes-users] Looking for service pool managing solution

[Rodrigo Campos]

On Thursday, May 17, 2018,  wrote:

> So:
> I have 3 types of devices. Each device has assigned container - to access
> device you have to connect to container and from there you can use device.


What do you mean with device?


> Containers have special environment variable describing to which device it
> is assigned, e.g. B4 - which means: device type B, number 4.
>
> Now we are lending access to device by manually passing access to chosen
> container, but my need is to automate it: developer sends request: I need
> device type A. System checks if there is any resource available and gives
> access to developer. When developer is done, he sends request: ok, I'm
> done. Ramp down the container. And next user can request for it.


You can easily create pods based on a yaml. And use the Kubernetes API or
kubectl to create them or delete.

IIUC, that is what you need, right?

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Re: [kubernetes-users] Looking for service pool managing solution

[tomasz . szandala]

So:
I have 3 types of devices. Each device has assigned container - to access 
device you have to connect to container and from there you can use device.
Containers have special environment variable describing to which device it is 
assigned, e.g. B4 - which means: device type B, number 4.

Now we are lending access to device by manually passing access to chosen 
container, but my need is to automate it: developer sends request: I need 
device type A. System checks if there is any resource available and gives 
access to developer. When developer is done, he sends request: ok, I'm done. 
Ramp down the container. And next user can request for it.

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Re: [kubernetes-users] Looking for service pool managing solution

[Rodrigo Campos]

Can you please elaborate? I don't follow what you mean with "type A,
unique variable: xxx".

On Thu, May 17, 2018 at 12:35 PM,   wrote:
> Hi Rodrigo,
> I cannot find an example for one thing:
> Let's say I have 3 pods defined:
> type: A, unique_variable: 111
> type: A, unique_variable: 222
> type: A, unique_variable: 333
>
> Now: how can I use API or Kubectl to create random pod of type A?
>
>
> Kind regards,
> Tomasz
>
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Re: [kubernetes-users] Looking for service pool managing solution

[tomasz . szandala]

Hi Rodrigo,
I cannot find an example for one thing:
Let's say I have 3 pods defined:
type: A, unique_variable: 111
type: A, unique_variable: 222
type: A, unique_variable: 333

Now: how can I use API or Kubectl to create random pod of type A?


Kind regards,
Tomasz

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Re: [kubernetes-users] Looking for service pool managing solution

[Rodrigo Campos]

For what I understand, yes. Go ahead and try it out and read the docs.

Each container/pod can specify it's requirements regarding could/mem, and
k8s will allocate them while they exist automatically on some node. Or you
can even make sure some containers/pods will be run on some type of nodes
(like the ones with SSD, etc.)

So, yes, it should. Have fun! :-)

On Thursday, May 17, 2018,  wrote:

> Greetings,
> I am looking for a software to manage a pool of application, using API and
> database system. Let me show You my problem:
> I have 3 types of services: A, B and C. Each one requires outside
> resource, so we distinguish each instance. e.g.: I have 6 A-type virtual
> machines { A1, A2,.., A6}, 3 B-type: {B1,B2,B3} and 10 C-type. Each
> instance has its own internal setup, mostly IPs to remote resources. Now I
> want my managing system to solve usecases:
> 1. One of Jenkinses (I could have few) needs to test something using
> A-type instance. He sends API request and gets details to about random from
> that type and uses it. When he is done, the instance isfreed and returned
> using API.
> 2. A software developers needs some manual tests and asks for C-type
> instance. He sends an API request and gets details on one of those
> instances.
> 3. Only one "user" (Jenkins or human) can be using given instance at any
> time.
> 4. I need to be able to check who/what is using any of the instances at
> any time (can also be API query).
> 5. There needs to be security logs - when who requested what, what he got
> in
> return.
>
>
> I am looking for a system to solve this problem, one of my Colleagues
> hinted me to use Kubernetes - since the "instance" can be containers with
> uniqe configuration it might be possible, but could anyone comment: does
> Kubernetes satisfies all my needs? Or maybe something else?
>
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