How to delete configuration on Junos via NSO

[oldcreek12]

Hi,

I am new to NSO, so apologize for my ignorance. I recently downloaded NSO 5.3 and I was able to successfully develop a static NAT service with real device being a Juniper vSRX, I can call API to successfully create a valid static NAT entry on vSRX, for example, 

$curl -i -X POST http://localhost:8080/restconf/data/ -u admin:admin -H "Content-Type: application/yang-data+xml" -d '<static_nat xmlns="http://com/example/static_nat">
>         <rule_name>nsonatrulename</rule_name>
>         <ext_pub_ip>192.168.1.3</ext_pub_ip>
>         <int_pri_ip>10.1.1.3</int_pri_ip>
>         <device>jnpr-dev-vsrx</device>
>  </static_nat>'

Now I wanted to delete this above NAT entry, it worked find on NSO CLI with "no static_nat nsonatrulename",  commit dry-run outputformat xml shows that corresponding XML snippet for this change is,

<static_nat xmlns="http://com/example/static_nat"
xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0"
nc:operation="delete">
<rule_name>nsonatrulename</rule_name>
</static_nat>

Now when I POST the above XML to API, I always get "HTTP/1.1 500 Internal Server Error", where did I do wrong?

[vleijon · Accepted solution]

So, the dry-run with the delete tag is a netconf payload, which you cannot send over the RESTCONF API. You can move to NETCONF but a way to achieve the same over the RESTCONF API is to use the DELETE action instead of POST, you can look at examples.ncs/getting-started/developing-with-ncs/13-restconf in your NSO install.

[oldcreek12]

Thanks, I tried DELETE actions, it is not accepted/supported.

[vleijon]

It should work, what url do you use? Try following the pattern in the example, in particular remember to give the module name in the url.

[lmanor]

So, it looks like you create a service instance of service 'static-nat' called nsonatrulename (presuming that the service is a list and rule_name is the instance identifier (key to list))

After creation of your service instance as shown below, the delete of that instance would be accomplished by:

curl -i -X DELETE -u admin:admin http://localhost:8080/restconf/data/static-nat:static-nat=nsonatrulename

Simple example ('name' is key for service 'hostname' list):

$ curl -i -X POST http://localhost:8080/restconf/data/ -u admin:admin -H "Content-Type: application/yang-data+xml" -d '<hostname xmlns="http://com/example/hostname"> <name>hn1</name> <device>j-0</device> <zone>zone1</zone> <location>Boston</location> </hostname>'
HTTP/1.1 201 Created

$ curl -i -X DELETE -u admin:admin http://localhost:8080/restconf/data/hostname:hostname=hn1
HTTP/1.1 204 No Content