Hello Kyle,
> GC3Pie cannot find the host and I get an error that looks like:
>
> gc3.gc3libs: ERROR: Ignoring error updating resource 'lenovo': Failed
> while connecting to remote host 'lenovo': [Errno 8] nodename nor servname
> provided, or not known.
>
Indeed this looks like a bug.
I have set up an alias `bastion` in my ~/.ssh/config, created a GC3Pie
"shellcmd" resource with `frontend=bastion` and `transport=ssh` and
then I get this error+traceback from `gservers`:
gservers: [2017-03-29 20:46:49] DEBUG : Creating resource 'test'
defined by: architecture=set(['x86_64']), auth='ssh_user_rmurri',
enabled=True, frontend='bastion', max_cores=42, max_cores_per_job=42,
max_memory_per_core=Memory(42, unit=GiB), max_walltime=Duration(42,
unit=hour), name='test', override='no', transport='ssh',
type='shellcmd'.
gservers: [2017-03-29 20:46:49] DEBUG : Using class <class
'gc3libs.backends.shellcmd.ShellcmdLrms'> from module <module
'gc3libs.backends.shellcmd' from
'/home/rmurri/gc3/gc3pie/gc3libs/backends/shellcmd.pyc'> to
instanciate resources of type shellcmd
gservers: [2017-03-29 20:46:49] INFO : Computational resource
'test' initialized successfully.
gservers: [2017-03-29 20:46:49] DEBUG : Opening SshTransport...
gservers: [2017-03-29 20:46:49] DEBUG : Using no ProxyCommand for
SSH connections.
gservers: [2017-03-29 20:46:49] DEBUG : Connecting to host 'bastion'
(port 22) as user 'rmurri' via SSH (timeout 30s)...
gservers: [2017-03-29 20:46:49] ERROR : Could not create ssh
connection to bastion: gaierror: [Errno -2] Name or service not known
gservers: [2017-03-29 20:46:49] ERROR : Ignoring error updating
resource 'test': Failed connecting to remote host 'bastion': [Errno
-2] Name or service not known.
gservers: [2017-03-29 20:46:49] DEBUG : Got error 'TransportError'
in updating resource 'test'; printing full traceback.
Traceback (most recent call last):
File "/home/rmurri/gc3/gc3pie/gc3libs/core.py", line 831, in update_resources
lrms.get_resource_status()
File "/home/rmurri/gc3/gc3pie/gc3libs/backends/shellcmd.py", line
700, in get_resource_status
self._gather_machine_specs()
File "/home/rmurri/gc3/gc3pie/gc3libs/backends/shellcmd.py", line
499, in _gather_machine_specs
self.transport.connect()
File "/home/rmurri/gc3/gc3pie/gc3libs/backends/transport.py", line
621, in connect
.format(hostname=self.remote_frontend, msg=ex))
TransportError: Failed connecting to remote host 'bastion': [Errno -2]
Name or service not known
It looks as though the front-end name is used literally, without alias
expansion. I will check whether this is a bug in GC3Pie's code or
Paramiko's.
Ciao,
R
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