[Xusheng Ai]

I have the same issue. I ran the hello_fabric.ipynb. The slice was created successfully. The error:Cannot assign requested address. It came up when I ran the Hello Fabric experiment. The site is Clemson. The fabrictestbed-extensions is 1.3.3.

[Xusheng Ai]

Thanks for the information!

[Xusheng Ai]

@Ilya Thanks for the reply. I thought the fabric_example 1.3.1 meaning there was an updated FABlib library. Sorry for the confusion.
@Komal Yes, actually I worked on create a slice this afternoon. One issue I did come across is that even though I ran the configure_environment notebook and set the bastion_key_filename to be /home/fabric/work/my_key, bastion_key_filename is still /home/fabric/work/fabric_config/fabric_bastion_key. I am able to create a slice after I put my key under the fabric_config folder. Thanks for the help!

[Xusheng Ai]

@Adam, I’m also working on build Fablib API on my University Cluster. It doesn’t support a browse, so I have to do it with python scripts. I followed the steps on the github you sent. However, I met an error that AttributeError: module 'cluster' has no attribute 'logger'. I was wondering if it was because of the version of cluster.

[Xusheng Ai]

Thank you so much for your help. I think that is the case. Sorry that I forgot the bastion key would expire after 6 months.

[Xusheng Ai]

No, I couldn’t ssh to the node.
The error information: `Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
kex_exchange_identification: Connection closed by remote host`

When I ran node.execute('echo Hello, FABRIC from nodehostname -s'), the error information : Exception: Authentication failed.

[Xusheng Ai]

Thanks for the information!

[Xusheng Ai]

Hello Paul,

Thanks for illustrating the ssh principle of Fabric VMs. I think it’s clear to me and I’m looking forward the example note book.

I do have another concern that we need to connect Fabric nodes with a google cloud server. I was wondering if this is possible to achieve the connection.

Thanks,
Best Regards,
Xusheng

[Xusheng Ai]

Thank you so much for the information!

[Xusheng Ai]

Thank you so much for the information!

[Xusheng Ai]

Hello Paul,

That works! Thank you so much.

[Xusheng Ai]

Hello Paul,

I create a new slice and I’m able to ssh to the nodes. However, for the slice I created before, I got the error when I ssh to the nodes: ubuntu@2001:1948:417:7:f816:3eff:fea4:c3d5: Permission denied (publickey). I am using the same ssh method generated by node.get_ssh_command() for these two situation. I don’t have a clue why it happened.

Thanks,
Best Regards,
Xusheng

[Xusheng Ai]

Thank you so much! It works perfect now!

[Xusheng Ai]

Hello Paul,

I think the Fabric maintenance is finished. However, the issues I had above still exists.
For the first one, when I tried to ssh to the fabric nodes. I got the Permission denied again. I checked the necessary SSH keys, and I believe they are all there.

ssh -F ~/work/.ssh/config ubuntu@2001:1948:417:7:f816:3eff:fea4:c3d5
Warning: Permanently added 'bastion-1.fabric-testbed.net,152.54.15.12' (ECDSA) to the list of known hosts.
Warning: Permanently added '2001:1948:417:7:f816:3eff:fea4:c3d5' (ECDSA) to the list of known hosts.
ubuntu@2001:1948:417:7:f816:3eff:fea4:c3d5: Permission denied (publickey).

The second issue is that I cannot create new slice with fablib API: When I queried for Available Testbed Resources, I got an error Exception: 'NoneType' object has no attribute 'resources'. Further, I think the NoneType object is the fablib.get_slice_manager() Please see below:

print(fablib.get_slice_manager())
None

I was wondering if you could help me with these two problems, I will be grateful for your help.

Thanks,
Best Regards,
Xusheng

[Xusheng Ai]

Thank you so much for the information!

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