c4f3a49782
Previously, we restricted the adjective and noun portion of the name each to 7 characters to ensure that the final name would not be more than 15 after adding a hyphen. Given that the _total_ length is what matters, we can generate a noun up to 11 characters (to ensure we leave room for a hyphen and a 3 letter adjective) and adjust our acceptable adjective size accordingly. This lets many more names be generated than would otherwise, while still respecting the 15 character limit. Due to the limited set of 11 letter nouns and corresponding 3 letter adjectives, as well as some complex combinatorics, setting the noun length to 11 causes a net increase in conflicts. We therefore actually set it to 10, which causes a net decrease in conflicts. We favor generating longer nouns rather than longer adjectives (by selecting the noun first) because longer adjectives tend to be more unwieldy words, and thus more awkward to say and generally less fun. |
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| bin | ||
| docker | ||
| docs | ||
| examples | ||
| lib | ||
| scripts | ||
| spec | ||
| .gitignore | ||
| .rubocop.yml | ||
| .rubocop_todo.yml | ||
| .travis.yml | ||
| CHANGELOG.md | ||
| CODEOWNERS | ||
| CONTRIBUTING.md | ||
| Gemfile | ||
| LICENSE | ||
| PROVIDER_API.md | ||
| Rakefile | ||
| README.md | ||
| Vagrantfile | ||
| vmpooler.gemspec | ||
| vmpooler.yaml.dummy-example | ||
| vmpooler.yaml.example | ||
vmpooler
vmpooler provides configurable 'pools' of instantly-available (running) virtual machines.
Usage
At Puppet, Inc. we run acceptance tests on thousands of disposable VMs every day. Dynamic cloning of VM templates initially worked fine for this, but added several seconds to each test run and was unable to account for failed clone tasks. By pushing these operations to a backend service, we were able to both speed up tests and eliminate test failures due to underlying infrastructure failures.
Installation
Prerequisites
vmpooler is available as a gem
To use the gem gem install vmpooler
Dependencies
Vmpooler requires a Redis server. This is the datastore used for vmpooler's inventory and queueing services.
Configuration
Configuration for vmpooler may be provided via environment variables, or a configuration file.
Please see this configuration document for more details about configuring vmpooler via environment variables.
The following YAML configuration sets up two pools, debian-7-i386 and debian-7-x86_64, which contain 5 running VMs each:
---
:providers:
:vsphere:
server: 'vsphere.example.com'
username: 'vmpooler'
password: 'swimsw1msw!m'
:redis:
server: 'redis.example.com'
:config:
logfile: '/var/log/vmpooler.log'
:pools:
- name: 'debian-7-i386'
template: 'Templates/debian-7-i386'
folder: 'Pooled VMs/debian-7-i386'
pool: 'Pooled VMs/debian-7-i386'
datastore: 'vmstorage'
size: 5
provider: vsphere
- name: 'debian-7-x86_64'
template: 'Templates/debian-7-x86_64'
folder: 'Pooled VMs/debian-7-x86_64'
pool: 'Pooled VMs/debian-7-x86_64'
datastore: 'vmstorage'
size: 5
provider: vsphere
See the provided YAML configuration example, vmpooler.yaml.example, for additional configuration options and parameters or for supporting multiple providers.
Running via Docker
A Dockerfile is included in this repository to allow running vmpooler inside a Docker container. A configuration file can be used via volume mapping, and specifying the destination as the configuration file via environment variables, or the application can be configured with environment variables alone. The Dockerfile provides an entrypoint so you may choose whether to run API, or manager services. The default behavior will run both. To build and run:
docker build -t vmpooler . && docker run -e VMPOOLER_CONFIG -p 80:4567 -it vmpooler
To run only the API and dashboard
docker run -p 80:4567 -it vmpooler api
To run only the manager component
docker run -it vmpooler manager
docker-compose
A docker-compose file is provided to support running vmpooler easily via docker-compose.
docker-compose -f docker/docker-compose.yml up
Running Docker inside Vagrant
A vagrantfile is included in this repository. Please see vagrant instructions for details.
API and Dashboard
vmpooler provides an API and web front-end (dashboard) on port :4567. See the provided YAML configuration example, vmpooler.yaml.example, to specify an alternative port to listen on.
API
vmpooler provides a REST API for VM management. See the API documentation for more information.
Dashboard
A dashboard is provided to offer real-time statistics and historical graphs. It looks like this:
Graphite is required for historical data retrieval. See the provided YAML configuration example, vmpooler.yaml.example, for details.
Command-line Utility
- The vmpooler_client.py CLI utility provides easy access to the vmpooler service. The tool is cross-platform and written in Python.
- vmfloaty is a ruby based CLI tool and scripting library written in ruby.
Vagrant plugin
- vagrant-vmpooler Use Vagrant to create and manage your vmpooler instances.
Development and further documentation
For more information about setting up a development instance of vmpooler or other subjects, see the docs/ directory.
Build status
License
vmpooler is distributed under the Apache License, Version 2.0. See the LICENSE file for more details.