Ansible (2.5.0) Module Failure - ios_user, ios_ping

0
votes

I was in the middle of programming an Ansible playbook and suddenly I started getting a "Module Error" and I have no idea why. I tried each module individually in the CLI with every option. I ran a syntax check (--syntax-check) and there were no problems with that. I think this mught be a bug.

"ios_facts" module works:

$ ansible all -m ios_facts -i Resources/Inventory/hosts

10.20.30.111 | SUCCESS => {

"ansible_facts": {
    "ansible_net_all_ipv4_addresses": [
        "10.20.30.111"
    ], 
    "ansible_net_all_ipv6_addresses": [], 
    "ansible_net_filesystems": [
        "flash:"
(...)

"ios_ping" returns this error:

$ ansible all -m ios_ping -a"dest='1.1.1.1'" -i Resources/Inventory/hosts

10.20.30.111 | FAILED! => { "changed": false, "module_stderr": "Traceback (most recent call last):\n File \"/tmp/ansible_WOH7nd/ansible_module_ios_ping.py\", line 215, in \n main()\n File \"/tmp/ansible_WOH7nd/ansible_module_ios_ping.py\", line 151, in main\n success, rx, tx, rtt = parse_ping(stats)\n File \"/tmp/ansible_WOH7nd/ansible_module_ios_ping.py\", line 200, in parse_ping\n return rate.group(\"pct\"), rate.group(\"rx\"), rate.group(\"tx\"), rtt.groupdict()\nAttributeError: 'NoneType' object has no attribute 'group'\n", "module_stdout": "", "msg": "MODULE FAILURE", "rc": 1}

"ios_user" returns this error:

An exception occurred during task execution. To see the full traceback, use -vvv. The error was: ASwitch#

10.20.30.111 | FAILED! => { "changed": false, "module_stderr": "Traceback (most recent call last):\n File \"/tmp/ansible_UX9ZWc/ansible_module_ios_user.py\", line 409, in \n main()\n File \"/tmp/ansible_UX9ZWc/ansible_module_ios_user.py\", line 382, in main\n have = map_config_to_obj(module)\n File \"/tmp/ansible_UX9ZWc/ansible_module_ios_user.py\", line 242, in map_config_to_obj\n data = get_config(module, flags=['| section username'])\n File \"/tmp/ansible_UX9ZWc/ansible_modlib.zip/ansible/module_utils/network/ios/ios.py\", line 117, in get_config\n File \"/tmp/ansible_UX9ZWc/ansible_modlib.zip/ansible/module_utils/connection.py\", line 146, in rpc\nansible.module_utils.connection.ConnectionError: show running-config | section username\r\n ^\r\n% Invalid input detected at '^' marker.\r\n\r\nASwitch#\n", "module_stdout": "", "msg": "MODULE FAILURE", "rc": 1 }

IOS config: config.text

Ansible Inventory: Resources/Inventory/hosts

Ansible Version: 2.5.0

Cisco IOS version: 12.2(55)SE

The connection works fine and I also was able to execute the "ios_system" module. Do you guys have any idea what this might be?

2
pythonnetworkingansibleciscocisco-ios

2 Answers

1
votes

The second error suggests that 

show running-config | section username

is not a valid command on your device. Can you try running it by hand, most likely it will also fail. I'd guess that your IOS is too old or too new for most ios_ modules (12.2-whatexactly are you running?). This could also explain the ping not working due to differences in command output.

1
votes

As it turns out, the ios_user module is not compatible with Cisco IOS version 12.2(55)SE because it is using an output filter ("section") which is not available for this device's version. To fix this, I just had to substitute the word "section" with "include" in the ansible/modules/network/ios/ios_user.py file (the complete file path depends on your ansible instalation, because you might be using a virtual environment). Here is the module code. So that part of the the code then looked like this:

def map_config_to_obj(module):
    data = get_config(module, flags=['| include username'])

   match = re.findall(r'^username (\S+)', data, re.M)
    if not match:
        return list()

The module now works as intendeed. As for the ios_ping, I've been trying to reverse engineer it's code and, in my opinion, has more then one bug. I think it is working only when the success rate is above 0%.