9444e2dc43
This can cause behavior that requires re stat’ing files to for the guest to realize they have changed. Prevents manually dialing this option.
90 lines
3.4 KiB
Ruby
90 lines
3.4 KiB
Ruby
require "log4r"
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module VagrantPlugins
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module ProviderVirtualBox
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module Action
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class SaneDefaults
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def initialize(app, env)
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@logger = Log4r::Logger.new("vagrant::action::vm::sanedefaults")
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@app = app
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end
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def call(env)
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# Set the env on an instance variable so we can access it in
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# helpers.
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@env = env
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# Use rtcuseutc so that the VM sees UTC time.
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command = ["modifyvm", env[:machine].id, "--rtcuseutc", "on"]
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attempt_and_log(command, "Enabling rtcuseutc...")
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if env[:machine].provider_config.auto_nat_dns_proxy
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@logger.info("Automatically figuring out whether to enable/disable NAT DNS proxy...")
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# Enable/disable the NAT DNS proxy as necessary
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if enable_dns_proxy?
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command = ["modifyvm", env[:machine].id, "--natdnsproxy1", "on"]
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attempt_and_log(command, "Enable the NAT DNS proxy on adapter 1...")
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else
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command = ["modifyvm", env[:machine].id, "--natdnsproxy1", "off" ]
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attempt_and_log(command, "Disable the NAT DNS proxy on adapter 1...")
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command = ["modifyvm", env[:machine].id, "--natdnshostresolver1", "off" ]
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attempt_and_log(command, "Disable the NAT DNS resolver on adapter 1...")
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end
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else
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@logger.info("NOT trying to automatically manage NAT DNS proxy.")
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end
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@app.call(env)
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end
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protected
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# This is just a helper method that executes a single command, logs
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# the given string to the log, and also includes the exit status in
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# the log message.
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#
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# We assume every command is idempotent and pass along the `retryable`
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# flag. This is because VBoxManage is janky about running simultaneously
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# on the same box, and if we up multiple boxes at the same time, a bunch
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# of modifyvm commands get fired
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#
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# @param [Array] command Command to run
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# @param [String] log Log message to write.
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def attempt_and_log(command, log)
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begin
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@env[:machine].provider.driver.execute_command(
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command + [retryable: true])
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rescue Vagrant::Errors::VBoxManageError => e
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@logger.info("#{log} (error = #{e.inspect})")
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end
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end
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# This uses some heuristics to determine if the NAT DNS proxy should
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# be enabled or disabled. See the comments within the function body
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# itself to see the checks it does.
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#
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# @return [Boolean]
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def enable_dns_proxy?
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begin
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contents = File.read("/etc/resolv.conf")
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if contents =~ /^nameserver 127\.0\.(0|1)\.1$/
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# The use of both natdnsproxy and natdnshostresolver break on
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# Ubuntu 12.04 and 12.10 that uses resolvconf with localhost. When used
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# VirtualBox will give the client dns server 10.0.2.3, while
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# not binding to that address itself. Therefore disable this
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# feature if host uses the resolvconf server 127.0.0.1 or
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# 127.0.1.1
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@logger.info("Disabling DNS proxy since resolv.conf contains 127.0.0.1 or 127.0.1.1")
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return false
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end
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rescue Errno::ENOENT; end
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return true
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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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