π£ mitamae
mitamae is a tool to automate configuration management using a Chef-like DSL powered by mruby.
It's been used for provisioning servers, e.g. RubyCI servers and Ruby's git server, and setting up local environments with dotfiles.
Key Features
-
Fast - mitamae is optimized for local execution. It uses C functions via mruby libraries for core operations where possible, instead of executing commands on a shell or over a SSH connection like other tools, which is very slow.
-
Simple - Running mitamae doesn't require Chef Server, Berkshelf, Data Bags, or even RubyGems. The mitamae core provides only essential features. You can quickly be a master of mitamae.
-
Single Binary - mitamae can be deployed by just transferring a single binary to servers. You don't need to rely on slow operations over a SSH connection to workaround deployment problems.
Installation
Download a binary for your platform from GitHub Releases.
curl -L https://github.com/itamae-kitchen/mitamae/releases/latest/download/mitamae-x86_64-linux.tar.gz \
| tar xvz
./mitamae-x86_64-linux help
Getting Started
Create a recipe file as recipe.rb
:
package 'nginx' do
action :install
end
service 'nginx' do
action [:enable, :start]
end
And then execute mitamae local
command to apply a recipe to a local machine.
$ mv mitamae-x86_64-linux mitamae
$ ./mitamae local recipe.rb
INFO : Starting mitamae...
INFO : Recipe: /home/user/recipe.rb
INFO : package[nginx] installed will change from 'false' to 'true'
INFO : service[nginx] enabled will change from 'false' to 'true'
INFO : service[nginx] running will change from 'false' to 'true'
See mitamae help local
for available options. --log-level=debug
is helpful to inspect what's executed in detail.
Documentation
mitamae was built as an alternative implementation of Itamae. Therefore you may refer to resources related to Itamae for mitamae as well.
How to write recipes
Please refer to Itamae wiki:
mitamae's original features
They should be ported to Itamae at some point.
not_if
/only_if
can take a block instead of a commandfile
,remote_file
, andtemplate
resources haveatomic_update
attributerun_command
streams log output with--log-level debug
orlog_output: true
option.
Plugins
Please see PLUGINS.md for how to install or create plugins for mitamae.
Find mitamae plugins and Itamae plugins supporting mitamae on GitHub.
mruby features
The DSL is based on mruby instead of standard Ruby unlike Chef and Itamae. You may use the following mruby features in mitamae recipes.
- mruby's built-in features
- Some features may not be available if not specified or used by mrbgem.rake dependencies.
- Check
MRUBY_VERSION
used by mitamae and Latest News on mruby.org.
- mruby-at_exit
- mruby-dir-glob
- mruby-dir
- mruby-env
- mruby-erb
- mruby-etc
- mruby-file-stat
- mruby-hashie
- mruby-json
- mruby-open3
- mruby-shellwords
- mruby-tempfile
- mruby-uri
- mruby-yaml
Supported platforms
- See Releases for supported architectures.
- All operating systems supported by Serverspec
are supported since they share their underlying library, Specinfra.
- See CHANGELOG or mruby-specinfra to find what Specinfra version is used.
Running mitamae on servers
When you want to use mitamae on remote servers, you need to distribute a mitamae binary and recipes to the servers and run them remotely. There are at least the following ways to do it:
- rsync and ssh -
It's handy to send them using
rsync
and run them usingssh
when you apply recipes to a few servers. hocho is a convenient tool to do this. While it's over a SSH connection, it's much faster than other tools which establish a SSH connection for each operation likeitamae ssh
. - deployment tool - A more scalable way is to install an agent to each server and notify the agents to fetch mitamae and recipes from an object storage and run them. Deployment tools like AWS CodeDeploy are useful to achieve them.
Example recipes
The following recipes are open-source usages of mitamae.
Migrating from Chef
While the DSL is inspired by Chef, there are some differences you need to keep in mind when you migrate Chef recipes to mitamae recipes.
Chef | mitamae |
---|---|
cookbook_file |
Use remote_file or template , specifying a path with source . |
directory 's recursive true |
directory is recursive true by default |
ruby_block |
Use local_ruby_block . |
shell_out! |
Use run_command . Open3.capture3 or system might suffice too. |
Chef::Log.* |
MItamae.logger.* |
Digest::*.hexdigest |
Use *sum command (e.g. sha1sum ) as a workaround. |
bash |
Just use execute or specify bash -c ... with it. mitamae's --shell=/bin/bash might also help. |
cron |
You may use mitamae-plugin-resource-cron. |
deploy_revision |
You may use mitamae-plugin-resource-deploy_revision. See also: mitamae-plugin-resource-deploy_directory |
runit_service |
You may use mitamae-plugin-resource-runit_service. |
Change Log
See CHANGELOG.md.
Contributing
When you develop your local changes, you can write an integration test under spec/
and run it like:
bundle install
bundle exec rake test:integration
This requires Docker on your local environment.