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