#!/usr/bin/python # Copyright 2015 Google Inc. All Rights Reserved. # # This file is part of Ansible # # Ansible is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # Ansible is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with Ansible. If not, see DOCUMENTATION = ''' --- module: kubernetes version_added: "2.1" short_description: Manage Kubernetes resources. description: - This module can manage Kubernetes resources on an existing cluster using the Kubernetes server API. Users can specify in-line API data, or specify an existing Kubernetes YAML file. Currently, this module, Only supports HTTP Basic Auth Only supports 'strategic merge' for update, http://goo.gl/fCPYxT SSL certs are not working, use 'validate_certs=off' to disable options: api_endpoint: description: - The IPv4 API endpoint of the Kubernetes cluster. required: true default: null aliases: ["endpoint"] inline_data: description: - The Kubernetes YAML data to send to the API I(endpoint). This option is mutually exclusive with C('file_reference'). required: true default: null file_reference: description: - Specify full path to a Kubernets YAML file to send to API I(endpoint). This option is mutually exclusive with C('inline_data'). required: false default: null certificate_authority_data: description: - Certificate Authority data for Kubernetes server. Should be in either standard PEM format or base64 encoded PEM data. Note that certificate verification is broken until ansible supports a version of 'match_hostname' that can match the IP address against the CA data. required: false default: null state: description: - The desired action to take on the Kubernetes data. required: true default: "present" choices: ["present", "absent", "update", "replace"] password: description: - The HTTP Basic Auth password for the API I(endpoint). This should be set unless using the C('insecure') option. default: null username: description: - The HTTP Basic Auth username for the API I(endpoint). This should be set unless using the C('insecure') option. default: "admin" insecure: description: - "Reverts the connection to using HTTP instead of HTTPS. This option should only be used when execuing the M('kubernetes') module local to the Kubernetes cluster using the insecure local port (locahost:8080 by default)." validate_certs: description: - Enable/disable certificate validation. Note that this is set to C(false) until Ansible can support IP address based certificate hostname matching (exists in >= python3.5.0). required: false default: false author: "Eric Johnson (@erjohnso) " ''' EXAMPLES = ''' # Create a new namespace with in-line YAML. - name: Create a kubernetes namespace kubernetes: api_endpoint: 123.45.67.89 username: admin password: redacted inline_data: kind: Namespace apiVersion: v1 metadata: name: ansible-test labels: label_env: production label_ver: latest annotations: a1: value1 a2: value2 state: present # Create a new namespace from a YAML file. - name: Create a kubernetes namespace kubernetes: api_endpoint: 123.45.67.89 username: admin password: redacted file_reference: /path/to/create_namespace.yaml state: present # Do the same thing, but using the insecure localhost port - name: Create a kubernetes namespace kubernetes: api_endpoint: 123.45.67.89 insecure: true file_reference: /path/to/create_namespace.yaml state: present ''' RETURN = ''' # Example response from creating a Kubernetes Namespace. api_response: description: Raw response from Kubernetes API, content varies with API. returned: success type: dictionary contains: apiVersion: "v1" kind: "Namespace" metadata: creationTimestamp: "2016-01-04T21:16:32Z" name: "test-namespace" resourceVersion: "509635" selfLink: "/api/v1/namespaces/test-namespace" uid: "6dbd394e-b328-11e5-9a02-42010af0013a" spec: finalizers: - kubernetes status: phase: "Active" ''' import yaml import base64 ############################################################################ ############################################################################ # For API coverage, this Anislbe module provides capability to operate on # all Kubernetes objects that support a "create" call (except for 'Events'). # In order to obtain a valid list of Kubernetes objects, the v1 spec file # was referenced and the below python script was used to parse the JSON # spec file, extract only the objects with a description starting with # 'create a'. The script then iterates over all of these base objects # to get the endpoint URL and was used to generate the KIND_URL map. # # import json # from urllib2 import urlopen # # r = urlopen("https://raw.githubusercontent.com/kubernetes" # "/kubernetes/master/api/swagger-spec/v1.json") # v1 = json.load(r) # # apis = {} # for a in v1['apis']: # p = a['path'] # for o in a['operations']: # if o["summary"].startswith("create a") and o["type"] != "v1.Event": # apis[o["type"]] = p # # def print_kind_url_map(): # results = [] # for a in apis.keys(): # results.append('"%s": "%s"' % (a[3:].lower(), apis[a])) # results.sort() # print "KIND_URL = {" # print ",\n".join(results) # print "}" # # if __name__ == '__main__': # print_kind_url_map() ############################################################################ ############################################################################ KIND_URL = { "binding": "/api/v1/namespaces/{namespace}/bindings", "endpoints": "/api/v1/namespaces/{namespace}/endpoints", "limitrange": "/api/v1/namespaces/{namespace}/limitranges", "namespace": "/api/v1/namespaces", "node": "/api/v1/nodes", "persistentvolume": "/api/v1/persistentvolumes", "persistentvolumeclaim": "/api/v1/namespaces/{namespace}/persistentvolumeclaims", # NOQA "pod": "/api/v1/namespaces/{namespace}/pods", "podtemplate": "/api/v1/namespaces/{namespace}/podtemplates", "replicationcontroller": "/api/v1/namespaces/{namespace}/replicationcontrollers", # NOQA "resourcequota": "/api/v1/namespaces/{namespace}/resourcequotas", "secret": "/api/v1/namespaces/{namespace}/secrets", "service": "/api/v1/namespaces/{namespace}/services", "serviceaccount": "/api/v1/namespaces/{namespace}/serviceaccounts" } USER_AGENT = "ansible-k8s-module/0.0.1" # TODO(erjohnso): SSL Certificate validation is currently unsupported. # It can be made to work when the following are true: # - Ansible consistently uses a "match_hostname" that supports IP Address # matching. This is now true in >= python3.5.0. Currently, this feature # is not yet available in backports.ssl_match_hostname (still 3.4). # - Ansible allows passing in the self-signed CA cert that is created with # a kubernetes master. The lib/ansible/module_utils/urls.py method, # SSLValidationHandler.get_ca_certs() needs a way for the Kubernetes # CA cert to be passed in and included in the generated bundle file. # When this is fixed, the following changes can be made to this module, # - Remove the 'return' statement in line 254 below # - Set 'required=true' for certificate_authority_data and ensure that # ansible's SSLValidationHandler.get_ca_certs() can pick up this CA cert # - Set 'required=true' for the validate_certs param. def decode_cert_data(module): return d = module.params.get("certificate_authority_data") if d and not d.startswith("-----BEGIN"): module.params["certificate_authority_data"] = base64.b64decode(d) def api_request(module, url, method="GET", headers=None, data=None): body = None if data: data = json.dumps(data) response, info = fetch_url(module, url, method=method, headers=headers, data=data) if int(info['status']) == -1: module.fail_json(msg="Failed to execute the API request: %s" % info['msg'], url=url, method=method, headers=headers) if response is not None: body = json.loads(response.read()) return info, body def k8s_create_resource(module, url, data): info, body = api_request(module, url, method="POST", data=data, headers={"Content-Type": "application/json"}) if info['status'] == 409: name = data["metadata"].get("name", None) info, body = api_request(module, url + "/" + name) return False, body elif info['status'] >= 400: module.fail_json(msg="failed to create the resource: %s" % info['msg'], url=url) return True, body def k8s_delete_resource(module, url, data): name = data.get('metadata', {}).get('name') if name is None: module.fail_json(msg="Missing a named resource in object metadata when trying to remove a resource") url = url + '/' + name info, body = api_request(module, url, method="DELETE") if info['status'] == 404: return False, "Resource name '%s' already absent" % name elif info['status'] >= 400: module.fail_json(msg="failed to delete the resource '%s': %s" % (name, info['msg']), url=url) return True, "Successfully deleted resource name '%s'" % name def k8s_replace_resource(module, url, data): name = data.get('metadata', {}).get('name') if name is None: module.fail_json(msg="Missing a named resource in object metadata when trying to replace a resource") headers = {"Content-Type": "application/json"} url = url + '/' + name info, body = api_request(module, url, method="PUT", data=data, headers=headers) if info['status'] == 409: name = data["metadata"].get("name", None) info, body = api_request(module, url + "/" + name) return False, body elif info['status'] >= 400: module.fail_json(msg="failed to replace the resource '%s': %s" % (name, info['msg']), url=url) return True, body def k8s_update_resource(module, url, data): name = data.get('metadata', {}).get('name') if name is None: module.fail_json(msg="Missing a named resource in object metadata when trying to update a resource") headers = {"Content-Type": "application/strategic-merge-patch+json"} url = url + '/' + name info, body = api_request(module, url, method="PATCH", data=data, headers=headers) if info['status'] == 409: name = data["metadata"].get("name", None) info, body = api_request(module, url + "/" + name) return False, body elif info['status'] >= 400: module.fail_json(msg="failed to update the resource '%s': %s" % (name, info['msg']), url=url) return True, body def main(): module = AnsibleModule( argument_spec=dict( http_agent=dict(default=USER_AGENT), username=dict(default="admin"), password=dict(default="", no_log=True), force_basic_auth=dict(default="yes"), validate_certs=dict(default=False, type='bool'), certificate_authority_data=dict(required=False), insecure=dict(default=False, type='bool'), api_endpoint=dict(required=True), file_reference=dict(required=False), inline_data=dict(required=False), state=dict(default="present", choices=["present", "absent", "update", "replace"]) ), mutually_exclusive = (('file_reference', 'inline_data'), ('username', 'insecure'), ('password', 'insecure')), required_one_of = (('file_reference', 'inline_data'),), ) decode_cert_data(module) api_endpoint = module.params.get('api_endpoint') state = module.params.get('state') insecure = module.params.get('insecure') inline_data = module.params.get('inline_data') file_reference = module.params.get('file_reference') if inline_data: data = inline_data else: try: f = open(file_reference, "r") data = [x for x in yaml.load_all(f)] f.close() if not data: module.fail_json(msg="No valid data could be found.") except: module.fail_json(msg="The file '%s' was not found or contained invalid YAML/JSON data" % file_reference) # set the transport type and build the target endpoint url transport = 'https' if insecure: transport = 'http' target_endpoint = "%s://%s" % (transport, api_endpoint) body = [] changed = False # make sure the data is a list if not isinstance(data, list): data = [ data ] for item in data: namespace = "default" if item and 'metadata' in item: namespace = item.get('metadata', {}).get('namespace', "default") kind = item.get('kind', '').lower() try: url = target_endpoint + KIND_URL[kind] except KeyError: module.fail_json("invalid resource kind specified in the data: '%s'" % kind) url = url.replace("{namespace}", namespace) else: url = target_endpoint if state == 'present': item_changed, item_body = k8s_create_resource(module, url, item) elif state == 'absent': item_changed, item_body = k8s_delete_resource(module, url, item) elif state == 'replace': item_changed, item_body = k8s_replace_resource(module, url, item) elif state == 'update': item_changed, item_body = k8s_update_resource(module, url, item) changed |= item_changed body.append(item_body) module.exit_json(changed=changed, api_response=body) # import module snippets from ansible.module_utils.basic import * # NOQA from ansible.module_utils.urls import * # NOQA if __name__ == '__main__': main()