Mina Multi Server
This is an extremely simple gem that adds multi-server support to Mina tasks. In order to avoid complexity, each task is executed sequentially. You should look at other solutions if you need parallel execution.
Installation
gem install mina-multi_server
Usage
Set a servers
array in your deploy.rb with the hostnames of the servers where
you want the tasks to be executed on.
When using mina-multi_server
, there is no need to set a domain
var as Mina
requires.
# deploy.rb
require 'mina/multi_server'
task :production do
set :servers, ['server-1.example.com', 'server-2.example.com']
end
# ...
$ mina production deploy
How it works
Each remote task will be executed for each server of servers
array, setting
ENV['domain']
to each server. Mina checks ENV[domain
] when fetching the
domain
to be used by the task. Using the ENV
keeps the domain
var of Mina
untouched, so you can still use it for other task (such as ssh
). In addition,
ENV['domain']
is also restored to its previous value in case it was set.
For non-remote tasks, each task will be executed only once and servers
var
will not be used.
Tasks will be executed one after the other, sequentially.
Running tasks on a single server
Mina-multi_server includes a select
task that lets you pick the server where you
want the task to be executed on. You just need to call it before the main task.
You will also need to require mina/multi_server/select
in your deploy.rb.
# deploy.rb
require 'mina/multi_server'
require 'mina/multi_server/select'
task :production do
set :servers, ['server-1.example.com', 'server-2.example.com']
end
# ...
$ mina production select ssh
Select server:
1. server-1.example.com
2. server-2.example.com
>
After you select an option, the domain
var that Mina uses will be set to the
selected server. In addition, the servers
array will be reduced to a
single-item array including only the selected server.