Dear Riccardo,

(Ana Jokanović, Sun, Jan 15, 2017 at 03:04:19PM -0800:) 
> > Still, I am getting the same problem. I attached the fronted log. It 
> seems 
> > there is a problem with cloud-init. 
> > [...] 
> > 2017-01-15 21:51:03,234 - url_helper.py[WARNING]: Calling '
> http://169.254.169.254/2009-04-04/meta-data/instance-id' failed [0/120s]: 
> request error [HTTPConnectionPool(host='169.254.169.254', port=80): Max 
> retries exceeded with url: /2009-04-04/meta-data/instance-id (Caused by 
> <class 'socket.error'>: [Errno 111] Connection refused)] 
> > 2017-01-15 21:53:03,982 - DataSourceEc2.py[CRITICAL]: Giving up on md 
> from ['http://169.254.169.254/2009-04-04/meta-data/instance-id'] after 
> 120 seconds 
> > 2017-01-15 21:53:04,020 - url_helper.py[WARNING]: Calling '
> http://172.16.100.3//latest/meta-data/instance-id' failed [0/120s]: 
> request error [HTTPConnectionPool(host='172.16.100.3', port=80): Max 
> retries exceeded with url: //latest/meta-data/instance-id (Caused by <class 
> 'socket.error'>: [Errno 111] Connection refused)] 
> > 2017-01-15 21:54:57,055 - url_helper.py[WARNING]: Calling '
> http://172.16.100.3//latest/meta-data/instance-id' failed [113/120s]: 
> request error [HTTPConnectionPool(host='172.16.100.3', port=80): Max 
> retries exceeded with url: //latest/meta-data/instance-id (Caused by <class 
> 'socket.error'>: [Errno 111] Connection refused)] 
> > 2017-01-15 21:55:04,070 - DataSourceCloudStack.py[CRITICAL]: Giving up 
> on waiting for the metadata from ['
> http://172.16.100.3//latest/meta-data/instance-id'] after 120 seconds 
> > Cloud-init v. 0.7.5 finished at Sun, 15 Jan 2017 21:57:20 +0000. 
> Datasource DataSourceNone.  Up 574.35 seconds 
> > 2017-01-15 21:57:20,910 - cc_final_message.py[WARNING]: Used fallback 
> datasource 
>
> Indeed, it looks like the VM image you're using is not properly 
> configured to run in OpenStack: it's using `DataSourceEc2` and 
> `DataSourceCloudStack` and then fall back on `DataSourceNone`. 
> It should try `DataSourceOpenStack` at some point for the customization 
> to happen successfully.  (Or your OpenStack installation should have the 
> EC2 compatibility layer installed; you should see the `ec2-api-metadata` 
> service running and listening to port 8788 or 8789 if it does.) 
>
> Are you able to (1) start a VM with the same keypair and VM image used by 
> ElastiCluster and (2) ssh into it from the command-line? 
>

I have tried what you suggested and I do see the same problem. I will dig 
into it to try to found the cause. For the time being, the problem does not 
seem to be on the ElastiCluster side.

BTW, I have some questions about interaction between ElastiCluster and 
SLURM. 

I understand that ElastiCluster installs SLURM on the newly created 
cluster. 
Is SLURM source code within ElastiCluster source code? Where can I find it? 
May I substitute it with another (modified) version of SLURM?  
Also, can I edit slurm.conf and where can I find it? 

Which part of the ElastiCluster is responsible for resizing of the cluster? 
In SLURM's documentation I have found out about the Elastic computing and 
possibility to resize the cluster through setting ResumeProgram an 
SuspendProgram in slum.conf 
(https://slurm.schedmd.com/elastic_computing.html). Is this how 
ElastiCluster interact with SLURM, as well?

Thank you.

Best regards,
Ana



> Ciao, 
> R 
>
> -- 
> Riccardo Murri, Schwerzenbacherstrasse 2, CH-8606 Nänikon, Switzerland 
>

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