Config Template Load Fails on SRX1400

[supertylerc]

SRX1400 running 12.1X44-D25.5 is failing to load a template that other devices (EX4200s running various 10.x and 11.x releases) load without issue. The session is opened without any problems. I can also send RPC calls, such as get_chassis_inventory, although they seem to have issues.

Error message:

>>> r.rtr.cu.load(template_path="user.conf", template_vars=uvars)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/jnpr/junos/utils/config.py", line 270, in load
    return self.rpc.load_config(rpc_contents, **rpc_xattrs)
  File "/usr/local/lib/python2.7/dist-packages/jnpr/junos/rpcmeta.py", line 76, in load_config
    return self._junos.execute(rpc)
  File "/usr/local/lib/python2.7/dist-packages/jnpr/junos/device.py", line 308, in execute
    rsp = JXML.remove_namespaces(err.xml)
AttributeError: 'XMLSyntaxError' object has no attribute 'xml'
>>> inv = r.rtr.rpc.get_chassis_inventory()
>>> inv.find('chassis/description').text
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'NoneType' object has no attribute 'text'
>>> inv.find('chassis/description').textinv
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'NoneType' object has no attribute 'textinv'
>>> inv
<Element multi-routing-engine-results at 0x7f35c802ba28>
>>> inv.text
'\n\n'

[supertylerc]

This issue does not occur on an SRX550 running 12.1X44-D20.3:

python main.py
User Name: tyler
Full Name: Tyler Christiansen
Key Path (/Users/tchristiansen52/.ssh/id_rsa.pub)
10.0.0.1

[edit system]
+   login {
+       class ADMIN {
+           login-alarms;
+           permissions all;
+       }
+       user tyler {
+           full-name "Tyler Christiansen";
+           class ADMIN;
+           authentication {
+               ssh-rsa "ssh-rsa harbl"; ## SECRET-DATA
+           }
+       }
+   }

[shermdog]

Thanks for the report @tyler-c

I'll dig into this.

[supertylerc]

Disregard the error with finding the chassis inventory description. It appears you need to be absolutely specific about the path and can't search through the tree without specifying parent nodes:

>>> rtr = Device('10.10.254.1', user='root', password='harbl')
>>> rtr.open()
Device(10.10.254.1)
>>> inv = rtr.rpc.get_chassis_inventory()
>>> inv.find('multi-routing-engine-item/chassis-inventory/chassis/description').text
'SRX 1400'
>>>

The config load is still failing, though.

[supertylerc]

More testing:

When loading the same template to an SRX550, the commit is successful but the method throws an error:

rtr.cu.commit()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Python/2.7/site-packages/jnpr/junos/utils/config.py", line 72, in commit
    JXML.remove_namespaces( err.xml )
AttributeError: 'exceptions.AttributeError' object has no attribute 'xml'
>>>

However, the configuration was actually committed:

tyler@srx550-1> show configuration system login
class ADMIN {
    login-alarms;
    permissions all;
}
user tyler {
    full-name "Tyler Christiansen";
    uid 2001;
    class ADMIN;
    authentication {
        ssh-rsa "harbl"; ## SECRET-DATA
    }
}

{primary:node0}

This makes it a bit more difficult to catch the failure and perform appropriate action, since you can't do a simple rollback (to zero) and need to actually specify a revision to rollback to (1).

[jeremyschulman]

@tyler-c - you write:

Disregard the error with finding the chassis inventory description. It appears you need to be absolutely specific about the path and can't search through the tree without specifying parent nodes

I actually thought the same given my background using XML with Ruby ;-) Try prefixing your XPath expression with "./" so "chassis/description" becomes "./chassis/description". This technique works for me so I do not need to be absolutely specific.

Hope this helps.

[jeremyschulman]

@tyler-c - just a helpful bit:

>>> inv.find('multi-routing-engine-item/chassis-inventory/chassis/description').text

can be

>>> inv.findtext('multi-routing-engine-item/chassis-inventory/chassis/description')

[jeremyschulman]

@tyler-c - regarding you exception around the cu.commit(), could you please add a try/except block and dump the error:

try:
   <your code>
except Exception as err:
   import pdb
   pdb.set_trace()

When the debugger (pdb) hits, you can just inspect the err variable and it will give you the XML response from Junos. This might show you what the cause it - please do include this in the next comment on this issue. Thank you!

[jeremyschulman]

@tyler-c - I just submitted some code to master that has better Exception handling. Could you please retrieve that code and re-try your tests?

Alternatively, if you can allow me remote access to your device I could try to resolve this directly.

Thank you!

[supertylerc]

Sorry for lack of testing--been a bit busy. I'll have to clone the repo and use that (currently using pip version). I'll try to get to it before the weekend.

Thanks.

[jeremyschulman]

@tyler-c - Just checking in. Hope all is going well. Do you happen to have an update on this issue?

[jeremyschulman]

@tyler-c - I'd like to close this issue if it is no longer persistent. Please advise, or I'll close in a few days. Thank you!

[jeremyschulman]

will close this on 5/16 if no further activity reported.

[jeremyschulman]

closing due to inactivity. can re-open at a later time.