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Runs collector plugins and sends the result to resotocore.

Project description

resotoworker

Resoto worker daemon

Table of contents

Overview

resotoworker does all the collection and cleanup work in Resoto. It is connected to resotocore over a websocket connection and waits for instructions. By default it subscribes to the collect and cleanup actions as well as tag tasks.

resotoworker loads collector plugins like AWS, GCP, Slack, Onelogin, etc. Only those plugins have knowledge about how to communicate with each cloud. How to collect resources and how to clean them up.

There can be one or more instances of resotoworker in a Resoto deployment. A single resotoworker can collect many clouds or you could have multiple resotoworker collecting one cloud or even one account in one cloud each.

More information can be found below and in the docs.

Usage

resotoworker uses the following commandline arguments:

  --subscriber-id SUBSCRIBER_ID
                        Unique subscriber ID (default: resoto.worker)
  --psk PSK             Pre-shared key
  --verbose, -v         Verbose logging
  --quiet               Only log errors
  --resotocore-uri RESOTOCORE_URI
                        resotocore URI (default: https://localhost:8900)
  --override CONFIG_OVERRIDE [CONFIG_OVERRIDE ...]
                        Override config attribute(s)
  --ca-cert CA_CERT     Path to custom CA certificate file
  --cert CERT           Path to custom certificate file
  --cert-key CERT_KEY   Path to custom certificate key file
  --cert-key-pass CERT_KEY_PASS
                        Passphrase for certificate key file
  --no-verify-certs     Turn off certificate verification

ENV Prefix: RESOTOWORKER_ Every CLI arg can also be specified using ENV variables.

For instance the boolean --fork would become RESOTOWORKER_FORK=true.

Details

Once resotoworker is started you do not have to interact with it at all. It will just sit there, wait for work and do its job. The following are details on how resotoworker works internally and how it integrates with resotocore.

Actions and Tasks

Think of actions and tasks like topics and queues in a messaging system. Actions are broadcast to everyone subscribed for that action. A task is always given to exactly one worker that knows how to handle it.

Actions

When the collect workflow within resotocore is triggered (by either an event or a schedule or because the user manually triggered it), resotocore will broadcast a "start collecting all the cloud accounts you know about" message to all the subscribed workers. Once all the workers finish collecting and sent their graph to the core, the workflow will proceed to the next step which would be plan_cleanup. This one tells anyone interested to start planing their cleanup based on the just collected graph data. Once everyone has planed their cleanup and flagged resources that should get cleaned up with the desired.clean = true flag, the workflow proceeds to the cleanup step which again notifies anyone subscribed to now perform cleanup of those flagged resources. Because the cleaner within resotoworker has knowledge of all dependencies in the graph, it will ensure that resources are cleaned up in the right order.

Tasks

When a plugin or a user decides that a resource tag should be added, changed or removed, e.g. by running

search id = i-039e06bb2539e5484 | tag update owner lukas

resotocore will put this tagging task onto a task queue. This task is then consumed by a resotoworker that knows how to perform tagging for that particular resource and its particular cloud and account. In our example above where we are setting the tag owner: lukas for an AWS EC2 instance with ID i-039e06bb2539e5484 the task would be given to a resotoworker that knows how to update AWS EC2 instance tags in that resources account.

Contact

If you have any questions feel free to join our Discord or open a GitHub issue.

License

Copyright 2022 Some Engineering Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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