├── .gitignore ├── CONTRIBUTING.md ├── LICENSE ├── README.md ├── app.yaml ├── cron.yaml ├── favicon.ico ├── main.py ├── requirements.txt └── templates └── index.html /.gitignore: -------------------------------------------------------------------------------- 1 | *.swp 2 | *.pyc 3 | -------------------------------------------------------------------------------- /CONTRIBUTING.md: -------------------------------------------------------------------------------- 1 | # How to become a contributor and submit your own code 2 | 3 | ## Contributor License Agreements 4 | 5 | We'd love to accept your sample apps and patches! 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ![status: inactive](https://img.shields.io/badge/status-inactive-red.svg) 2 | 3 | This project is no longer actively developed or maintained. 4 | 5 | For more information about Compute Engine, refer to our [documentation](https://cloud.google.com/compute). 6 | For more information about App Engine, refer to our [documentation](https://cloud.google.com/appengine). 7 | 8 | Instance timeout helper 9 | ================================ 10 | 11 | This App Engine application monitors your Google Compute Engine instances and deletes any non-production instances once they're 8 hours old. This helps avoid accidentally running instances for a long time. Any instances tagged "production" will be left running. 12 | 13 | > WARNING: When instances are stopped, all data on ephemeral disks is destroyed. This application looks at ALL instances in a project and will delete any instances which aren't tagged "production". For extra safety, the application defaults to running in DRY_RUN mode, where deletes are logged, but not applied. 14 | 15 | This sample application demonstrates the [Compute Engine API](https://developers.google.com/compute/docs/reference/v1beta13/) from App Engine, specifically: listing instances and deleting instances. The same pattern can be used for other GCE API calls. 16 | 17 | You can configure how often the application checks the instances, which tags will be left alone and how long instances are allowed to run before deleting them. 18 | 19 | 20 | ## Run Locally 21 | 22 | 1. Install the [Google Cloud SDK](https://cloud.google.com/sdk/), including the [gcloud tool](https://cloud.google.com/sdk/gcloud/), and [gcloud app component](https://cloud.google.com/sdk/gcloud-app). 23 | 2. Setup the gcloud tool. 24 | 25 | ``` 26 | gcloud components update app 27 | gcloud auth login 28 | gcloud config set project 29 | ``` 30 | You don't need a valid app-id to run locally, but will need a valid id to deploy below. 31 | 32 | 1. Clone this repo. 33 | 34 | ``` 35 | git clone https://github.com/GoogleCloudPlatform/compute-appengine-timeout-python.git 36 | ``` 37 | 1. Install the required libraries 38 | 39 | ``` 40 | pip install -t lib/ -r requirements.txt 41 | ``` 42 | (Note this requires at least `pip` version 6.0 43 | 44 | 1. Run this project locally from the command line. 45 | 46 | ``` 47 | gcloud preview app run / 48 | ``` 49 | 50 | 1. Visit the application at [http://localhost:8080](http://localhost:8080). 51 | 52 | ## Deploying 53 | 54 | 1. Use the [Cloud Developer Console](https://console.developer.google.com) to create a project/app id. (App id and project id are identical) 55 | 2. Configure gcloud with your app id. 56 | 57 | ``` 58 | gcloud config set project 59 | ``` 60 | 1. Use the [Admin Console](https://appengine.google.com) to view data, queues, and other App Engine specific administration tasks. 61 | 1. Use gcloud to deploy your app. 62 | 63 | ``` 64 | gcloud preview app deploy / 65 | ``` 66 | 67 | 1. Congratulations! Your application is now live at your-app-id.appspot.com 68 | 69 | > As long as DRY_RUN is set to `True` (the default) in `main.py`, the application will only log deletes. 70 | 71 | View the index at the root of the application, at `http://YOUR-APP-ID.appspot.com`. 72 | Check that production instances are being excluded and older instances would be deleted. 73 | 74 | To create instances tagged "production", add the instance using the GCE Console and include "production" in the tags field. Or add it using gcloud 75 | 76 | $ gcloud compute instances create test --tags production 77 | 78 | You can optionally run the cron task manually and check the logs to verify that the correct instances will be deleted. 79 | 80 | Visit `http://YOUR-APP-ID.appspot.com/cron/delete` to run deletes immediately. Then check the AppEngine logs. You should see "DRY_RUN, not deleted" if any instances are old enough to be deleted. 81 | 82 | Once everything looks good, edit `main.py` and change `DRY_RUN` to `False`. 83 | 84 | Happy Computing! 85 | -------------------------------------------------------------------------------- /app.yaml: -------------------------------------------------------------------------------- 1 | version: 1 2 | runtime: python27 3 | api_version: 1 4 | threadsafe: yes 5 | 6 | handlers: 7 | - url: /favicon\.ico 8 | static_files: favicon.ico 9 | upload: favicon\.ico 10 | 11 | - url: .* 12 | script: main.app 13 | login: admin 14 | 15 | libraries: 16 | - name: webapp2 17 | version: latest 18 | 19 | - name: jinja2 20 | version: latest 21 | -------------------------------------------------------------------------------- /cron.yaml: -------------------------------------------------------------------------------- 1 | cron: 2 | - description: check for expired Compute Engine instances to delete 3 | url: /cron/delete 4 | schedule: every 1 hours synchronized 5 | -------------------------------------------------------------------------------- /favicon.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/googlearchive/compute-appengine-timeout-python/00fa31e8402e92909fd2eb082fbf80d416ef979b/favicon.ico -------------------------------------------------------------------------------- /main.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # 3 | # Copyright 2012 Google Inc. 4 | # 5 | # Licensed under the Apache License, Version 2.0 (the "License"); 6 | # you may not use this file except in compliance with the License. 7 | # You may obtain a copy of the License at 8 | # 9 | # http://www.apache.org/licenses/LICENSE-2.0 10 | # 11 | # Unless required by applicable law or agreed to in writing, software 12 | # distributed under the License is distributed on an "AS IS" BASIS, 13 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 | # See the License for the specific language governing permissions and 15 | # limitations under the License. 16 | 17 | import datetime 18 | import json 19 | import logging 20 | import os 21 | from pprint import pformat 22 | import jinja2 23 | import webapp2 24 | from google.appengine.api import app_identity 25 | from google.appengine.ext import vendor 26 | 27 | vendor.add('lib') 28 | 29 | from googleapiclient import discovery 30 | from oauth2client.client import GoogleCredentials 31 | 32 | 33 | compute = discovery.build('compute','v1', credentials=GoogleCredentials.get_application_default()) 34 | 35 | SAMPLE_NAME = 'Instance timeout helper' 36 | 37 | CONFIG = { 38 | # In DRY_RUN mode, deletes are only logged. Set this to False after you've 39 | # double-checked the status page and you're ready to enable the deletes. 40 | 'DRY_RUN': True, 41 | 42 | # Be careful, this application could delete all instances in this project. 43 | # Your project id can be found on the overview tab of the Google APIs 44 | # Console: https://code.google.com/apis/console/ 45 | 'GCE_PROJECT_ID': app_identity.get_application_id(), 46 | 47 | # Instances created with these tags will never be deleted. 48 | 'SAFE_TAGS': ['production', 'safetag'], 49 | 50 | # Instances are deleted after they have been running for TIMEOUT minutes. 51 | 'TIMEOUT': 60 * 8, # in minutes, defaulting to 8 hours 52 | } 53 | CONFIG['SAFE_TAGS'] = [t.lower() for t in CONFIG['SAFE_TAGS']] 54 | 55 | # Obtain App Engine AppAssertion credentials and authorize HTTP connection. 56 | # https://developers.google.com/appengine/docs/python/appidentity/overview 57 | 58 | # Build object for the 'v1' version of the GCE API. 59 | # https://developers.google.com/compute/docs/reference/v1beta13/ 60 | jinja_environment = jinja2.Environment( 61 | loader=jinja2.FileSystemLoader('templates')) 62 | 63 | 64 | def annotate_instances(instances): 65 | """loops through the instances and adds exclusion, age and timeout""" 66 | for inst in instances: 67 | # set _excluded 68 | excluded = False 69 | tags = inst.get('tags', {}).get('items', []) 70 | inst['_tags'] = tags 71 | 72 | for tag in tags: 73 | if tag.lower() in CONFIG['SAFE_TAGS']: 74 | excluded = True 75 | break 76 | inst['_excluded'] = excluded 77 | 78 | # set _age_minutes and _timeout_expired 79 | # _timeout_expired is never True for _excluded inst 80 | creation = parse_iso8601tz(inst['creationTimestamp']) 81 | now = datetime.datetime.now() 82 | delta = now - creation 83 | age_minutes = (delta.days * 24 * 60) + (delta.seconds / 60) 84 | inst['_age_minutes'] = age_minutes 85 | # >= comparison because seconds are truncated above. 86 | if not inst['_excluded'] and age_minutes >= CONFIG['TIMEOUT']: 87 | inst['_timeout_expired'] = True 88 | else: 89 | inst['_timeout_expired'] = False 90 | 91 | 92 | def list_instances(): 93 | """returns a list of dictionaries containing GCE instance data""" 94 | request = compute.instances().aggregatedList(project=CONFIG['GCE_PROJECT_ID']) 95 | response = request.execute() 96 | zones = response.get('items', {}) 97 | instances = [] 98 | for zone in zones.values(): 99 | for instance in zone.get('instances', []): 100 | instances.append(instance) 101 | annotate_instances(instances) 102 | return instances 103 | 104 | 105 | class MainHandler(webapp2.RequestHandler): 106 | """index handler, displays app configuration and instance data""" 107 | def get(self): 108 | instances = list_instances() 109 | 110 | data = {} 111 | data['config'] = CONFIG 112 | data['title'] = SAMPLE_NAME 113 | data['instances'] = instances 114 | data['raw_instances'] = json.dumps(instances, indent=4, sort_keys=True) 115 | 116 | template = jinja_environment.get_template('index.html') 117 | self.response.out.write(template.render(data)) 118 | 119 | 120 | def delete_expired_instances(): 121 | """logs all expired instances, calls delete API when not DRY_RUN""" 122 | instances = list_instances() 123 | 124 | # filter instances, keep only expired instances 125 | instances = [i for i in instances if i['_timeout_expired']] 126 | 127 | logging.info('delete cron: %s instance%s to delete', 128 | len(instances), '' if len(instances) == 1 else 's') 129 | 130 | for instance in instances: 131 | name = instance['name'] 132 | zone = instance['zone'].split('/')[-1] 133 | if CONFIG['DRY_RUN']: 134 | logging.info("DRY_RUN, not deleted: %s", name) 135 | else: 136 | logging.info("DELETE: %s", name) 137 | request = compute.instances().delete( 138 | project=CONFIG['GCE_PROJECT_ID'], 139 | instance=name, 140 | zone=zone) 141 | response = request.execute() 142 | logging.info(response) 143 | 144 | 145 | class DeleteHandler(webapp2.RequestHandler): 146 | """delete handler - HTTP endpoint for the GAE cron job""" 147 | def get(self): 148 | delete_expired_instances() 149 | 150 | 151 | app = webapp2.WSGIApplication([ 152 | ('/cron/delete', DeleteHandler), 153 | ('/', MainHandler), 154 | ], debug=True) 155 | 156 | 157 | # ------------------------------------------------ 158 | # helpers 159 | def parse_iso8601tz(date_string): 160 | """return a datetime object for a string in ISO 8601 format. 161 | 162 | This function parses strings in exactly this format: 163 | '2012-12-26T13:31:47.823-08:00' 164 | 165 | Sadly, datetime.strptime's %z format is unavailable on many platforms, 166 | so we can't use a single strptime() call. 167 | """ 168 | 169 | dt = datetime.datetime.strptime(date_string[:-6], 170 | '%Y-%m-%dT%H:%M:%S.%f') 171 | 172 | # parse the timezone offset separately 173 | delta = datetime.timedelta(minutes=int(date_string[-2:]), 174 | hours=int(date_string[-5:-3])) 175 | if date_string[-6] == '-': 176 | # add the delta to return to UTC time 177 | dt = dt + delta 178 | else: 179 | dt = dt - delta 180 | return dt 181 | -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | google-api-python-client 2 | -------------------------------------------------------------------------------- /templates/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | {{title}} 4 | 5 | 21 | 22 |

{{title}}

23 |

Configuration:

24 |
    25 |
  • DRY_RUN: {{config.DRY_RUN}} 26 |
  • GCE_PROJECT_ID: {{config.GCE_PROJECT_ID}} 27 |
  • SAFE_TAGS: {{', '.join(config.SAFE_TAGS)}} 28 |
  • TIMEOUT: {{config.TIMEOUT}} 29 |
30 |

Instances:

31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | {% for i in instances %} 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | {% endfor %} 52 |
NameAgeCreation timestampTypeExcludedTagsDescription
{{i.name}}{{i._age_minutes}}{{i.creationTimestamp}}{{i.machineType.split('/')[-1]}}{{i._excluded}}{{', '.join(i._tags)}}{{i.description}}
53 |

Legend

54 | 55 | 56 | 57 | 58 |
Expired - will be deleted soon
59 |

60 |

Raw instance data:

61 | 
{{raw_instances}}
62 | 63 | 64 | 65 | --------------------------------------------------------------------------------