Hi Riccardo
My gcrpie version:
gservers 2.4.2 version (SVN $Revision: 4328 $)

More and more problems.
I (re-)installed time (it was already there)
I added the time_cmd entry in my main instance's gc3pie.conf

When i started my script, i now got:
gc3.gc3libs: ERROR: Could not create resource 'sciencecloud': OpenStack 
backend has been requested but no `python-novaclient` package was found. 
Please, install `python-novaclient` with`pip install python-novaclient` or 
`easy_install 
python-novaclient` and try again, or update your configuration file.. 
Configuration file problem?
gc3.gc3libs: WARNING: Failed creating backend for resource 'sciencecloud' 
of type 'openstack+shellcmd': ConfigurationError: OpenStack backend has 
been requested but no `python-novaclient` package was found. Please, 
install `python-novaclient` with`pip install python-novaclient` or 
`easy_install 
python-novaclient` and try again, or update your configuration file.

So i followed the advice and did `pip install python-novaclient`.
It is quite a mistery for me since i used the previous main instance (from 
which i took the snapshot for the current main  instance) for many 
successful runs of gqhg...

Anyway, after this install the script started, but was unable to connect to 
the spawned instance:
gc3.gc3libs: ERROR: Could not create ssh connection to 172.23.65.142: 
SSHException: not a valid EC private key file
gc3.gc3libs: ERROR: Key file /home/centos/.ssh/cloud_jw not accepted by 
remote host 172.23.65.142. Please check your setup.
gc3.gc3libs: ERROR: Could not create ssh connection to 172.23.65.142: 
SSHException: not a valid EC private key file
gc3.gc3libs: ERROR: Key file /home/centos/.ssh/cloud_jw not accepted by 
remote host 172.23.65.142. Please check your setup.
gc3.gc3libs: ERROR: Got error in submitting task 'GUnzipApp.240', informing 
scheduler: LRMSSkipSubmissionToNextIteration: Delaying submission until 
some of the VMs currently pending is ready. Pending VM ids: f72c4453-5e01-
4df1-813c-369efda14766
Which is strange because manually i can log in (with cloud_jw key) to  
172.23.65.142 from my main instance (172.23.64.111), but i had to type the 
passphrase.
Do i have to start ssh-agent on my main instance? If yes, what is the 
correct command for this?

Regards
  Jody



On Monday, November 21, 2016 at 11:51:42 AM UTC+1, Jody Weissmann wrote:
>
> Hi
>
> I have built a *SequentialTaskCollection* consisting of 6 Applications.
>
> When i run it on localhost it works fine, but on the science cloud i get a 
> message like 
> /home/centos/gc3libs.L4Kvjx/.gc3pie_shellcmd/wrapper_script.sh: line 4: 
> exec: None: not found
> for every application in the *SequentialTaskCollection*
>
> A new instance is started in the science cloud and the various output 
> directories as well as stdout and stderr files are created.
>
> The instance created is a fresh Centos 7.2 installation to which i added 
> some packages needed for my software to run (i.e. no gc3lib or so 
> installed).
>
> Does anybody know how to solve this problem?
>
> cheers
>   Jody
>
>

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