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community.general/plugins/modules/remote_management/imc/imc_rest.py

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2020-03-09 10:11:07 +01:00
#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2017, Dag Wieers <dag@wieers.com>
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import absolute_import, division, print_function
__metaclass__ = type
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'community'}
DOCUMENTATION = r'''
---
module: imc_rest
short_description: Manage Cisco IMC hardware through its REST API
description:
- Provides direct access to the Cisco IMC REST API.
- Perform any configuration changes and actions that the Cisco IMC supports.
- More information about the IMC REST API is available from
U(http://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/c/sw/api/3_0/b_Cisco_IMC_api_301.html)
author:
- Dag Wieers (@dagwieers)
requirements:
- lxml
- xmljson >= 0.1.8
options:
hostname:
description:
- IP Address or hostname of Cisco IMC, resolvable by Ansible control host.
required: true
aliases: [ host, ip ]
username:
description:
- Username used to login to the switch.
default: admin
aliases: [ user ]
password:
description:
- The password to use for authentication.
default: password
path:
description:
- Name of the absolute path of the filename that includes the body
of the http request being sent to the Cisco IMC REST API.
- Parameter C(path) is mutual exclusive with parameter C(content).
aliases: [ 'src', 'config_file' ]
content:
description:
- When used instead of C(path), sets the content of the API requests directly.
- This may be convenient to template simple requests, for anything complex use the M(template) module.
- You can collate multiple IMC XML fragments and they will be processed sequentially in a single stream,
the Cisco IMC output is subsequently merged.
- Parameter C(content) is mutual exclusive with parameter C(path).
protocol:
description:
- Connection protocol to use.
default: https
choices: [ http, https ]
timeout:
description:
- The socket level timeout in seconds.
- This is the time that every single connection (every fragment) can spend.
If this C(timeout) is reached, the module will fail with a
C(Connection failure) indicating that C(The read operation timed out).
default: 60
validate_certs:
description:
- If C(no), SSL certificates will not be validated.
- This should only set to C(no) used on personally controlled sites using self-signed certificates.
type: bool
default: 'yes'
notes:
- The XML fragments don't need an authentication cookie, this is injected by the module automatically.
- The Cisco IMC XML output is being translated to JSON using the Cobra convention.
- Any configConfMo change requested has a return status of 'modified', even if there was no actual change
from the previous configuration. As a result, this module will always report a change on subsequent runs.
In case this behaviour is fixed in a future update to Cisco IMC, this module will automatically adapt.
- If you get a C(Connection failure) related to C(The read operation timed out) increase the C(timeout)
parameter. Some XML fragments can take longer than the default timeout.
- More information about the IMC REST API is available from
U(http://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/c/sw/api/3_0/b_Cisco_IMC_api_301.html)
'''
EXAMPLES = r'''
- name: Power down server
imc_rest:
hostname: '{{ imc_hostname }}'
username: '{{ imc_username }}'
password: '{{ imc_password }}'
validate_certs: no
content: |
<configConfMo><inConfig>
<computeRackUnit dn="sys/rack-unit-1" adminPower="down"/>
</inConfig></configConfMo>
delegate_to: localhost
- name: Configure IMC using multiple XML fragments
imc_rest:
hostname: '{{ imc_hostname }}'
username: '{{ imc_username }}'
password: '{{ imc_password }}'
validate_certs: no
timeout: 120
content: |
<!-- Configure Serial-on-LAN -->
<configConfMo><inConfig>
<solIf dn="sys/rack-unit-1/sol-if" adminState="enable" speed=="115200" comport="com0"/>
</inConfig></configConfMo>
<!-- Configure Console Redirection -->
<configConfMo><inConfig>
<biosVfConsoleRedirection dn="sys/rack-unit-1/bios/bios-settings/Console-redirection"
vpBaudRate="115200"
vpConsoleRedirection="com-0"
vpFlowControl="none"
vpTerminalType="vt100"
vpPuttyKeyPad="LINUX"
vpRedirectionAfterPOST="Always Enable"/>
</inConfig></configConfMo>
delegate_to: localhost
- name: Enable PXE boot and power-cycle server
imc_rest:
hostname: '{{ imc_hostname }}'
username: '{{ imc_username }}'
password: '{{ imc_password }}'
validate_certs: no
content: |
<!-- Configure PXE boot -->
<configConfMo><inConfig>
<lsbootLan dn="sys/rack-unit-1/boot-policy/lan-read-only" access="read-only" order="1" prot="pxe" type="lan"/>
</inConfig></configConfMo>
<!-- Power cycle server -->
<configConfMo><inConfig>
<computeRackUnit dn="sys/rack-unit-1" adminPower="cycle-immediate"/>
</inConfig></configConfMo>
delegate_to: localhost
- name: Reconfigure IMC to boot from storage
imc_rest:
hostname: '{{ imc_host }}'
username: '{{ imc_username }}'
password: '{{ imc_password }}'
validate_certs: no
content: |
<configConfMo><inConfig>
<lsbootStorage dn="sys/rack-unit-1/boot-policy/storage-read-write" access="read-write" order="1" type="storage"/>
</inConfig></configConfMo>
delegate_to: localhost
- name: Add customer description to server
imc_rest:
hostname: '{{ imc_host }}'
username: '{{ imc_username }}'
password: '{{ imc_password }}'
validate_certs: no
content: |
<configConfMo><inConfig>
<computeRackUnit dn="sys/rack-unit-1" usrLbl="Customer Lab - POD{{ pod_id }} - {{ inventory_hostname_short }}"/>
</inConfig></configConfMo>
delegate_to: localhost
- name: Disable HTTP and increase session timeout to max value 10800 secs
imc_rest:
hostname: '{{ imc_host }}'
username: '{{ imc_username }}'
password: '{{ imc_password }}'
validate_certs: no
timeout: 120
content: |
<configConfMo><inConfig>
<commHttp dn="sys/svc-ext/http-svc" adminState="disabled"/>
</inConfig></configConfMo>
<configConfMo><inConfig>
<commHttps dn="sys/svc-ext/https-svc" adminState="enabled" sessionTimeout="10800"/>
</inConfig></configConfMo>
delegate_to: localhost
'''
RETURN = r'''
aaLogin:
description: Cisco IMC XML output for the login, translated to JSON using Cobra convention
returned: success
type: dict
sample: |
"attributes": {
"cookie": "",
"outCookie": "1498902428/9de6dc36-417c-157c-106c-139efe2dc02a",
"outPriv": "admin",
"outRefreshPeriod": "600",
"outSessionId": "114",
"outVersion": "2.0(13e)",
"response": "yes"
}
configConfMo:
description: Cisco IMC XML output for any configConfMo XML fragments, translated to JSON using Cobra convention
returned: success
type: dict
sample: |
elapsed:
description: Elapsed time in seconds
returned: always
type: int
sample: 31
response:
description: HTTP response message, including content length
returned: always
type: str
sample: OK (729 bytes)
status:
description: The HTTP response status code
returned: always
type: dict
sample: 200
error:
description: Cisco IMC XML error output for last request, translated to JSON using Cobra convention
returned: failed
type: dict
sample: |
"attributes": {
"cookie": "",
"errorCode": "ERR-xml-parse-error",
"errorDescr": "XML PARSING ERROR: Element 'computeRackUnit', attribute 'admin_Power': The attribute 'admin_Power' is not allowed. ",
"invocationResult": "594",
"response": "yes"
}
error_code:
description: Cisco IMC error code
returned: failed
type: str
sample: ERR-xml-parse-error
error_text:
description: Cisco IMC error message
returned: failed
type: str
sample: |
XML PARSING ERROR: Element 'computeRackUnit', attribute 'admin_Power': The attribute 'admin_Power' is not allowed.
input:
description: RAW XML input sent to the Cisco IMC, causing the error
returned: failed
type: str
sample: |
<configConfMo><inConfig><computeRackUnit dn="sys/rack-unit-1" admin_Power="down"/></inConfig></configConfMo>
output:
description: RAW XML output received from the Cisco IMC, with error details
returned: failed
type: str
sample: >
<error cookie=""
response="yes"
errorCode="ERR-xml-parse-error"
invocationResult="594"
errorDescr="XML PARSING ERROR: Element 'computeRackUnit', attribute 'admin_Power': The attribute 'admin_Power' is not allowed.\n"/>
'''
import atexit
import datetime
import itertools
import os
import traceback
LXML_ETREE_IMP_ERR = None
try:
import lxml.etree
HAS_LXML_ETREE = True
except ImportError:
LXML_ETREE_IMP_ERR = traceback.format_exc()
HAS_LXML_ETREE = False
XMLJSON_COBRA_IMP_ERR = None
try:
from xmljson import cobra
HAS_XMLJSON_COBRA = True
except ImportError:
XMLJSON_COBRA_IMP_ERR = traceback.format_exc()
HAS_XMLJSON_COBRA = False
from ansible.module_utils.basic import AnsibleModule, missing_required_lib
from ansible.module_utils.urls import fetch_url
def imc_response(module, rawoutput, rawinput=''):
''' Handle IMC returned data '''
xmloutput = lxml.etree.fromstring(rawoutput)
result = cobra.data(xmloutput)
# Handle errors
if xmloutput.get('errorCode') and xmloutput.get('errorDescr'):
if rawinput:
result['input'] = rawinput
result['output'] = rawoutput
result['error_code'] = xmloutput.get('errorCode')
result['error_text'] = xmloutput.get('errorDescr')
module.fail_json(msg='Request failed: %(error_text)s' % result, **result)
return result
def logout(module, url, cookie, timeout):
''' Perform a logout, if needed '''
data = '<aaaLogout cookie="%s" inCookie="%s"/>' % (cookie, cookie)
resp, auth = fetch_url(module, url, data=data, method="POST", timeout=timeout)
def merge(one, two):
''' Merge two complex nested datastructures into one'''
if isinstance(one, dict) and isinstance(two, dict):
copy = dict(one)
# copy.update({key: merge(one.get(key, None), two[key]) for key in two})
copy.update(dict((key, merge(one.get(key, None), two[key])) for key in two))
return copy
elif isinstance(one, list) and isinstance(two, list):
return [merge(alpha, beta) for (alpha, beta) in itertools.izip_longest(one, two)]
return one if two is None else two
def main():
module = AnsibleModule(
argument_spec=dict(
hostname=dict(type='str', required=True, aliases=['host', 'ip']),
username=dict(type='str', default='admin', aliases=['user']),
password=dict(type='str', default='password', no_log=True),
content=dict(type='str'),
path=dict(type='path', aliases=['config_file', 'src']),
protocol=dict(type='str', default='https', choices=['http', 'https']),
timeout=dict(type='int', default=60),
validate_certs=dict(type='bool', default=True),
),
supports_check_mode=True,
mutually_exclusive=[['content', 'path']],
)
if not HAS_LXML_ETREE:
module.fail_json(msg=missing_required_lib('lxml'), exception=LXML_ETREE_IMP_ERR)
if not HAS_XMLJSON_COBRA:
module.fail_json(msg=missing_required_lib('xmljson >= 0.1.8'), exception=XMLJSON_COBRA_IMP_ERR)
hostname = module.params['hostname']
username = module.params['username']
password = module.params['password']
content = module.params['content']
path = module.params['path']
protocol = module.params['protocol']
timeout = module.params['timeout']
result = dict(
failed=False,
changed=False,
)
# Report missing file
file_exists = False
if path:
if os.path.isfile(path):
file_exists = True
else:
module.fail_json(msg='Cannot find/access path:\n%s' % path)
start = datetime.datetime.utcnow()
# Perform login first
url = '%s://%s/nuova' % (protocol, hostname)
data = '<aaaLogin inName="%s" inPassword="%s"/>' % (username, password)
resp, auth = fetch_url(module, url, data=data, method='POST', timeout=timeout)
if resp is None or auth['status'] != 200:
result['elapsed'] = (datetime.datetime.utcnow() - start).seconds
module.fail_json(msg='Task failed with error %(status)s: %(msg)s' % auth, **result)
result.update(imc_response(module, resp.read()))
# Store cookie for future requests
try:
cookie = result['aaaLogin']['attributes']['outCookie']
except Exception:
module.fail_json(msg='Could not find cookie in output', **result)
# If we would not log out properly, we run out of sessions quickly
atexit.register(logout, module, url, cookie, timeout)
# Prepare request data
if content:
rawdata = content
elif file_exists:
with open(path, 'r') as config_object:
rawdata = config_object.read()
# Wrap the XML documents in a <root> element
xmldata = lxml.etree.fromstring('<root>%s</root>' % rawdata.replace('\n', ''))
# Handle each XML document separately in the same session
for xmldoc in list(xmldata):
if xmldoc.tag is lxml.etree.Comment:
continue
# Add cookie to XML
xmldoc.set('cookie', cookie)
data = lxml.etree.tostring(xmldoc)
# Perform actual request
resp, info = fetch_url(module, url, data=data, method='POST', timeout=timeout)
if resp is None or info['status'] != 200:
result['elapsed'] = (datetime.datetime.utcnow() - start).seconds
module.fail_json(msg='Task failed with error %(status)s: %(msg)s' % info, **result)
# Merge results with previous results
rawoutput = resp.read()
result = merge(result, imc_response(module, rawoutput, rawinput=data))
result['response'] = info['msg']
result['status'] = info['status']
# Check for any changes
# NOTE: Unfortunately IMC API always report status as 'modified'
xmloutput = lxml.etree.fromstring(rawoutput)
results = xmloutput.xpath('/configConfMo/outConfig/*/@status')
result['changed'] = ('modified' in results)
# Report success
result['elapsed'] = (datetime.datetime.utcnow() - start).seconds
module.exit_json(**result)
if __name__ == '__main__':
main()