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Contents
module VagrantPlugins
module GuestFedora
module Cap
class ChangeHostName
def self.change_host_name(machine, name)
new(machine, name).change!
end
attr_reader :machine, :new_hostname
def initialize(machine, new_hostname)
@machine = machine
@new_hostname = new_hostname
end
def change!
return unless should_change?
update_etc_hostname
update_etc_hosts
refresh_hostname_service
end
def should_change?
new_hostname != current_hostname
end
def current_hostname
@current_hostname ||= get_current_hostname
end
def get_current_hostname
hostname = ""
sudo "hostname -f" do |type, data|
hostname = data.chomp if type == :stdout && hostname.empty?
end
hostname
end
def update_etc_hostname
sudo("echo '#{short_hostname}' > /etc/hostname")
end
# /etc/hosts should resemble:
# 127.0.0.1 localhost
# 127.0.1.1 host.fqdn.com host.fqdn host
def update_etc_hosts
ip_address = '([0-9]{1,3}\.){3}[0-9]{1,3}'
search = "^(#{ip_address})\\s+#{Regexp.escape(current_hostname)}(\\s.*)?$"
replace = "\\1 #{fqdn} #{short_hostname}"
expression = ['s', search, replace, 'g'].join('@')
sudo("sed -ri '#{expression}' /etc/hosts")
end
def refresh_hostname_service
sudo("hostname -F /etc/hostname")
end
def fqdn
new_hostname
end
def short_hostname
new_hostname.split('.').first
end
def sudo(cmd, &block)
machine.communicate.sudo(cmd, &block)
end
end
end
end
end
Version data entries
13 entries across 10 versions & 3 rubygems