snmp-server host failure on some switches versions only

[tin-ot]

SUMMARY

first issue : failing on "net_version": "7.0(3)I7(8)", but working on "net_version": "9.3(8)", when duplicate entries in conf for host

snmp-server host 192.168.0.1 informs version 3 auth snmp-user
snmp-server host 192.168.0.1 use-vrf default

task is failing

fatal: [targethost]: FAILED! => {"changed": false, "module_stderr": "no snmp-server host 192.168.0.1 use-vrf defaults\r\r\nhost not found\r\n\rTARGETHOST(config)# ", "module_stdout": "", "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error"}

when executed directly on a 7.0(3)I7(8) switch :

no snmp-server host 192.168.0.1 informs version 3 auth snmp-user
no snmp-server host  192.168.0.1 use-vrf default

same error : host not found

but the error on a "9.3(8)" witch is different : DME DNSUB: No such SNMP target configured. and then the ansible task is not failing.

workaround use retries until all the duplicates are removed. task is failing. but the host is still deleted.

---

Issue number 2 :

I just noticed that there is no user "auth" entry in the output dict of the facts ... but just for the switch on version "9.3(8)" I did not notice any failure nor bugs due to this.

---

ISSUE TYPE

• Bug Report

COMPONENT NAME

snmp-server

ANSIBLE VERSION

ansible [core 2.12.5]

COLLECTION VERSION

cisco.nxos 3.0.0

STEPS TO REPRODUCE

add two entries on config like :

snmp-server host 192.168.0.1 informs version 3 auth snmp-user
snmp-server host 192.168.0.1 use-vrf default

then execute the task with state overriden

EXPECTED RESULTS

"commands": [
"no snmp-server host 192.168.0.1 informs version 3 auth snmp-user",
    "no snmp-server host 192.168.0.1 use-vrf default",

]

ACTUAL RESULTS

fatal: [targethost]: FAILED! => { "changed": false, "module_stderr": "no snmp-server host 192.168.0.1 use-vrf default\r\r\nhost not found\r\n\rTARGETHOST(config)# ", "module_stdout": "", "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error" }

<10.72.1.4> ANSIBLE_NETWORK_IMPORT_MODULES: found cisco.nxos.nxos_snmp_server  at ~/dev/ansible/collections/ansible_collections/cisco/nxos/plugins/modules/nxos_snmp_server.py
<10.72.1.4> ANSIBLE_NETWORK_IMPORT_MODULES: running cisco.nxos.nxos_snmp_server
<10.72.1.4> ANSIBLE_NETWORK_IMPORT_MODULES: complete

[NilashishC]

@tin-ot Hi! Could you please share the task which triggers these issues with state: overridden?

[tin-ot]

- name: snmp nxos, override SNMP servers conf
  cisco.nxos.nxos_snmp_server:
    config:
      location: "{{ snmp_server.location | default(omit) }}"
      contact: "{{ snmp_server.contact | default(omit) }}"
      drop:
        unknown_user: true
      users:
        auth:
          - user: snmp-user1
            group: network-admin
            authentication:
              algorithm: sha
              password: "{{ pwd }}"
              priv:
                privacy_password: "{{ priv  }}"
                aes_128: true
              localized_key: false
          - user: snmp-user2
            group: network-admin
            authentication:
              algorithm: sha
              password: "{{ pwd }}"
              priv:
                privacy_password: "{{ priv  }}"
                aes_128: true
              localized_key: false
          - user: snmp-user3
            group: network-admin
            authentication:
              algorithm: sha
              password: "{{ pwd }}"
              priv:
                privacy_password: "{{ priv  }}"
                aes_128: true
              localized_key: false


        use_acls:
          - user: snmp-user1
            ipv4: "{{ acl_num }}"
          - user: snmp-user2
            ipv4: "{{ acl_num }}"
          - user: snmp-user3
            ipv4: "{{ acl_num }}"

    state: overridden

If I remember the issue 1 correctly, task fails , but still manages to delete one of the dups.

We are trying to remove this line : snmp-server host 192.168.0.1 use-vrf default while it was already removed with this line: no snmp-server host 192.168.0.1 informs version 3 auth snmp-user

Thus, there is a non failing "warning" on some appliances, but a failing "error" in others.

About issue n2, sry I don't recall anything ^^.

[NilashishC]

@tin-ot Regarding the first issue, I'm able to reproduce it. In 7.0.3(x), it returns "host not found", in 9.x, it returns DME DNSUB: No such SNMP target configured.. Ansible is able to identify the first one as an error, but not the second one.

However, I'm unsure about what your expected results are. Could you please elaborate a bit more on that? Thank you!