atolab/fog05

the infrastructure for Fog and MEC computing

Moisés Carral Ortiz

@expploitt

It shows a "Not found" when fosctl fim add instance <id>

In the /var/fos/native-hypervisor/ the folder its created

Gabriele Baldoni

@gabrik

It may be because the RPi has not 200MB of RAM available

Moisés Carral Ortiz

@expploitt

but there is no .out

Gabriele Baldoni

@gabrik

for available I mean free

we hit that is some testing, most of raspberry pi usually have very low free RAM

you can trick the scheduler by setting 0 as ram_size_mb

Moisés Carral Ortiz

@expploitt

In the log, apparently the fog05 check is true but, I try what you say then

Gabriele Baldoni

@gabrik

then it this is strange, are you using the latest nightly?

you can find the debian files here: https://download.eclipse.org/fog05/fog05/nightly/

Moisés Carral Ortiz

@expploitt

I build it for armhf last week

maybe I should use aarch64 instead of armhf

Gabriele Baldoni

@gabrik

That will not work on the rpi with raspberryOS

Moisés Carral Ortiz

@expploitt

Maybe that is the cause of the error

Moisés Carral Ortiz

@expploitt

If you want to deploy a server?

Gabriele Baldoni

@gabrik

what do you mean by server?

Moisés Carral Ortiz

@expploitt

How do you achieve that an achievable server?

for example a flask

Gabriele Baldoni

@gabrik

Can you elaborate please?

Do you mean deploying something that provide a service, like an HTTP server or a Zenoh router?

Moisés Carral Ortiz

@expploitt

Sorry, an http server

Gabriele Baldoni

@gabrik

fog05 does not need to know if the FDU it is deploying is a server or not, it just starts it.

I your case I guess you may want to have some sort of port-forwarding in order to reach the FDU from outside the fog05 virtual networking.
We are working on it.

Moisés Carral Ortiz

@expploitt

Yes, in my case is problem of networking, because maybe it is necessary to make "public" the ports (like dockers or containers)

Gabriele Baldoni

@gabrik

Understood, we are working on it.

Moisés Carral Ortiz

@expploitt

Okey, thats fine, the docke plugin fits well also :)

Иван Сердюк

@oceanfish81_twitter

Could someone explain about integrating Aarch64 servers?

Gabriele Baldoni

@gabrik

You can just install the aarch64 binaries: https://download.eclipse.org/fog05/fog05/nightly/

2 replies

Иван Сердюк

@oceanfish81_twitter

You can just install the aarch64 binaries: https://download.eclipse.org/fog05/fog05/nightly/

OK, will try that

Oliver Layer

@OliLay

Hi all. I'm trying to deploy a binary that accesses a bluetooth device, unfortunately, when deploying it via fog05 it will always tell me that it can not use the bluetooth device. (Can't open HCI socket.: Address family not supported by protocol). When executing this binary without fog05, it works.
When running hcitool dev in the container, no devices are shown, while they are shown when executed without fog05 context. Running hciconfig shows same error (with the HCI socket) as when running my binary.
What does fog05 use for containerization when deploying binaries? Do you have any idea if it is possible to access the bluetooth device from there? Interestingly, accessing various GPIO port, or USB ports, works.

Gabriele Baldoni

@gabrik

Hi @OliLay, in fog05 we separate using namespacing, in particular those are the flags: https://github.com/eclipse-fog05/fog05-hypervisor-native/blob/0.2.x/containerize.c#L59. we use when creating the namespace.

It could be that the bluetooth device is available only in the default namespace, we could investigate if it is possible to move it around namespaces

Oliver Layer

@OliLay

"By now kernel only supported creating bluetooth socket in init_net
net namespace" (see https://lore.kernel.org/patchwork/patch/820786/)
This patch was never merged, so I guess its still like this.
I saw that there is the option to use no isolation at all via fog05...do you think this is the last resort?

Thanks for the answer btw @gabrik

Gabriele Baldoni

@gabrik

Yes, I think use no isolation could work, offcourse in that case the application will be running in the same namespaces of any other application in the host.
If for your use-case it is not a security issue, you can go for it.

Oliver Layer

@OliLay

Okay thanks. Network virtualization with fog05 then won't work for this FDU/node, as this is also realized via namespaces right?

Gabriele Baldoni

@gabrik

right, it will be outside of the virtual networking.

Oliver Layer

@OliLay

Hi @gabrik, today I tried to deploy the bluetooth fdu without isolation and it worked. Seems really like the bluetooth stack of the linux kernel does not support namespacing. But without isolation it works fine.
Is there a possibility to describe this in the FDU? Right now I changed the native plugin config to be non-isolated, but this affects also other FDUs deployed on this node.

Gabriele Baldoni

@gabrik

Hi @OliLay not yet, but indeed it would be good to have it.
Feel free to open an issue on this on the GitHub repo.

Oliver Layer

@OliLay

Sure! Do you want me to put it in the native-plugin issues or main fog05 issues?
If I have some spare time (and also start working with the master branch instead of 0.22), I can also have a look at how to implement it.

Gabriele Baldoni

@gabrik

Ok the main repo, the description of this “parameter” has to be part of the whole descriptor

Moisés Carral Ortiz

@expploitt

Hello! The fog05-python API documentation it is deprecated or is correct for the actual code of the repo? https://eclipse-fog05-python3-client-api.readthedocs.io/en/latest/helloworld.html

Gabriele Baldoni

@gabrik

Hi @expploitt it is deprecated, we are rewriting it to be based on the rust code-base

mjumnir

@mjumnir

Good morning. I wanted to get some information related to node communication such as average response time when I noticed that there is a filter implemented in fos_types.atd
When I plug a second node to the deployment, I can see the informations stored

Apr 21 10:00:33 debian fos_agent[7001]: agent: [DEBUG] [Yapi]: PUT on /agfos/0/tenants/0/nodes/f55a3de3-93ad-409a-a3e1-3abff85796ef/neighbors/4ccd7a70-cdfc-43fd-93a9-572604e714cf/iface/enp0s3 : {"peer":"4ccd7a70-cdfc-43fd-93a9-572604e714cf","average":0.001546377272117795,"ip":"192.168.0.113","iface":"enp0s3","packet_loss":0.78125,"packet_sent":128,"packet_received":127,"bytes_sent":640,"bytes_received":5207}

But it suddenly stop after a certain period of time. So my questions are the following:

Can you explain me how informations about "neighbors" are gathered and if it is normal that it stops updating information after about ten minutes
How can I query the distributed key-value store to access informations such as the status of the node

Gabriele Baldoni

@gabrik

Hi @mjumnir, you are referring to the 0.2.2 version which is based in OCaml and that will not receive any update/support as we are moving the whole codebase into rust.

There is any reason you need to use that verison?

If not please use the nightly releases that you can find https://download.eclipse.org/fog05/fog05/

mjumnir

@mjumnir

Hi @gabrik, there is no specific reason of using this version. I did the deployment months ago and was not aware of the evolution.
I will update to the last version, thank you.

Oliver Layer

@OliLay

Hi, when using the latest nightly version (rust) of the Python API, I've got issues on how to call the methods in the global class (https://github.com/eclipse-fog05/fog05-python/blob/master/src/zconnector.rs#L75) from Python.
I tried to manually instantiate the Zconnector, but I can't access the global instance that the Zconnector holds. Neither can I construct a Global object, as it is not included in the python module I guess.
Have I missed something or is it not possible to access these methods currently?

(I have an established foszenohsession, btw)

Gabriele Baldoni

@gabrik

The Python API is under heavy development so it is not currently working

Oliver Layer

@OliLay

Alright, thanks. The code looked quite complete, that's why I was wondering :D

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