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shipit-roles

v1.0.3

Published

Assign roles to servers and execute commands on sets of servers with specific roles

Downloads

4

Readme

shipit-roles

The shipit-roles module lets addresses the requirement outlined in this github issue:

https://github.com/shipitjs/shipit/issues/122

If you have a fleet of servers and that are configured in a specialized manner per role, shipit-roles lets you address them as a group during the deploy process. This allows you to restart the web server on only hosts that actually have a web server running or clear the cache on servers that actually keep a cache.

Installation

Install with npm or yarn:

npm install --save shipit-roles

Configuration

When you define your servers, use the following format:

...
servers: [
  {
    user: 'root',
    host: 'app1.example.com',
    role: 'appserver'
  },{
    user: 'root',
    host: 'app2.example.com',
    role: 'appserver'
  },{
    user: 'root',
    host: 'worker1.example.com',
    role: 'worker'
  },{
    user: 'root',
    host: 'worker2.example.com',
    role: 'worker'
  },{
    user: 'root',
    host: 'db1.example.com',
    role: 'database'
  }
]
...

You can have as many roles as you want and they can be identified with whatever word you choose. appserver, worker, and database are merely provided as examples.

Usage

shipit-roles monkey patches the remote() and remoteCopy() functions to accept a role option. If no role is provided, then it defaults to all servers. If a role is specified, then the command will only address the servers with that role.

const roles = require('shipit-roles')

module.exports = function (shipit) {

  roles(shipit)

  shipit.task('deploy:restart_appservers', () => {
    return shipit.remote('service nginx restart', { role: 'appserver' })
  })

  shipit.task('deploy:restart_workers', () => {
    return shipit.remote('service worker restart', { role: 'worker' })
  })

}

Author & Credits

Shipit-roles was written by Greg Kops and is based upon his work with Think Topography and The Cornell Cooperative Extension of Tompkins County