Ansible nso_config module error and JSONRPC

beelder · ‎07-06-2020

I’m running into a weird problem when attempting to create a template with the vrf. I tried both the current XR and XE neds. I think there may be a problem with the ansible nso_config module. It feels like there’s something with the empty dictionary at the end of “unicast”. I’ve tried using single and double quotes around and inside of {}. I even tried an empty value, a single and double quoted value and even null.

I get the same return error to ansible if I try to put anything in the VRF, such as NTP source, DNS source and etc.

Any ideas???

NSO Version 5.3.2.1, local install on a vagrant bento/ubuntu-18.04 box

The “api” variables:

---
url: http://172.28.128.2:8080/jsonrpc
username: admin
password: admin

Some info:

Works, but does not create the address families, they are commented out:

Vrf.yml:

- name: Build a VRF
  nso_config:
    url: "{{ api.url }}"
    username: "{{ api.username }}"
    password: "{{ api.password }}"
    data:
      tailf-ncs:devices:
        template:
        - name: vrf
          ned-id:
            # IOS XR Config
          - id: cisco-iosxr-cli-7.28:cisco-iosxr-cli-7.28
            config:
              tailf-ned-cisco-ios-xr:vrf:
                vrf-list:
                  - name: Mgmt-intf
                    # address-family:
                    #   ipv4:
                    #     unicast: {}
                    #   ipv6:
                    #     unicast: {}

If you then uncomment the address families and re-run the playbook, it does work, but Ansible notes it as “ok”, so it does not push a change to NSO

If you try to run the play without any existing config:

Error, ansible error: fatal: [127.0.0.1]: FAILED! => {"changed": false, "msg": "NSO get_schema returned JSON-RPC error: {'type': 'data.not_found', 'code': -32000, 'message': 'Data not found'}"}

Vrf.yml

- name: Build a VRF
  nso_config:
    url: "{{ api.url }}"
    username: "{{ api.username }}"
    password: "{{ api.password }}"
    data:
      tailf-ncs:devices:
        template:
        - name: vrf
          ned-id:
            # IOS XR Config
          - id: cisco-iosxr-cli-7.28:cisco-iosxr-cli-7.28
            config:
              tailf-ned-cisco-ios-xr:vrf:
                vrf-list:
                  - name: Mgmt-intf
                    address-family:
                      ipv4:
                        unicast: {}
                      ipv6:
                        unicast: {}

If I create it via NSO, the template looks like this:

admin@ncs# show running-config devices template vrf
devices template vrf
ned-id cisco-iosxr-cli-7.28
  config
   vrf vrf-list Mgmt-intf
    address-family ipv4 unicast
    address-family ipv6 unicast
   !
  !
!
!

Output via JSON here:

{
  "data": {
    "tailf-ncs:devices": {
      "template": [
        {
          "name": "vrf",
          "ned-id": [
            {
              "id": "cisco-iosxr-cli-7.28:cisco-iosxr-cli-7.28",
              "config": {
                "tailf-ned-cisco-ios-xr:vrf": {
                  "vrf-list": [
                    {
                      "name": "Mgmt-intf",
                      "address-family": {
                        "ipv4": {
                          "unicast": {
                          }
                        },
                        "ipv6": {
                          "unicast": {
                          }
                        }
                      }
                    }
                  ]
                }
              }
            }
          ]
        }
      ]
    }
  }
}

JSON to YAML python script output:

data:
  tailf-ncs:devices:
    template:
    - name: vrf
      ned-id:
      - config:
          tailf-ned-cisco-ios-xr:vrf:
            vrf-list:
            - address-family:
                ipv4:
                  unicast: {}
                ipv6:
                  unicast: {}
              name: Mgmt-intf
        id: cisco-iosxr-cli-7.28:cisco-iosxr-cli-7.28

I have fumbled thru the jsonrpc docs and think the commit is working fine using the API, it seems the problem is the implementation of the Ansible module?

First I started by deleting the vrf template from the CDB using traditional NSO cli.

After getting the login cookie, and a new “read_write” transaction handler, I posted some create methods:

{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "create",
    "params": {
        "th": 1,
        "path": "/devices/template{vrf}/ned-id{cisco-ios-cli-6.58:cisco-ios-cli-6.58}/config/ios:vrf/definition{Mgmt-intf}/address-family/ipv4"
    }
}

Repeat for these paths (used “show running-config devices template vrf | display keypath” to get the syntax):

/devices/template{vrf}/ned-id{cisco-ios-cli-6.58:cisco-ios-cli-6.58}/config/ios:vrf/definition{Mgmt-intf}/address-family/ipv4

/devices/template{vrf}/ned-id{cisco-ios-cli-6.58:cisco-ios-cli-6.58}/config/ios:vrf/definition{Mgmt-intf}/address-family/ipv6

/devices/template{vrf}/ned-id{cisco-iosxr-cli-7.28:cisco-iosxr-cli-7.28}/config/cisco-ios-xr:vrf/vrf-list{Mgmt-intf}/address-family/ipv4/unicast

/devices/template{vrf}/ned-id{cisco-iosxr-cli-7.28:cisco-iosxr-cli-7.28}/config/cisco-ios-xr:vrf/vrf-list{Mgmt-intf}/address-family/ipv6/unicast

Then did validate_commit followed by commit methods:

Result:

{
    "jsonrpc": "2.0",
    "result": {},
    "id": 1
}

Afterwards did:

POST:

{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "show_config",
    "params": {
        "th": 2,
        "path": "/devices/template{vrf}",
        "result_as": "json"
    }
}

Result:

{
    "jsonrpc": "2.0",
    "result": {
        "data": {
            "tailf-ncs:devices": {
                "template": [
                    {
                        "name": "vrf",
                        "ned-id": [
                            {
                                "id": "cisco-ios-cli-6.58:cisco-ios-cli-6.58",
                                "config": {
                                    "tailf-ned-cisco-ios:vrf": {
                                        "definition": [
                                            {
                                                "name": "Mgmt-intf",
                                                "address-family": {
                                                    "ipv4": {},
                                                    "ipv6": {}
                                                }
                                            }
                                        ]
                                    }
                                }
                            },
                            {
                                "id": "cisco-iosxr-cli-7.28:cisco-iosxr-cli-7.28",
                                "config": {
                                    "tailf-ned-cisco-ios-xr:vrf": {
                                        "vrf-list": [
                                            {
                                                "name": "Mgmt-intf",
                                                "address-family": {
                                                    "ipv4": {
                                                        "unicast": {}
                                                    },
                                                    "ipv6": {
                                                        "unicast": {}
                                                    }
                                                }
                                            }
                                        ]
                                    }
                                }
                            }
                        ]
                    }
                ]
            }
        }
    },
    "id": 1
}