Module: TestLab::Node::Doctor

Included in:
TestLab::Node
Defined in:
lib/testlab/node/doctor.rb

Instance Method Summary collapse

Instance Method Details

#doctor ⇒ Boolean

Node Doctor

Attempts to analyze the current node and report any issues.

Returns:

  • (Boolean) —

    True if everything is OK; false otherwise.



11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
 
# File 'lib/testlab/node/doctor.rb', line 11

def doctor
  if self.dead?
    @ui.stderr.puts(format_message("The node #{self.id.inspect} is dead! (Did you forget to up or build the node?)".red.bold))
    return false
  end

  if !self.lxc.installed?
    @ui.stderr.puts(format_message("LXC does not appear to be installed on your TestLab node!  (Did you forget to provision or build the node?)".red.bold))
    return false
  end

  result = true

  # make sure the node has some free space
  free_space_percent = (self.exec(%(df -P /), :ignore_exit_status => true).output.split("\n")[1].split[-2].to_i rescue nil)
  if free_space_percent.nil?
    @ui.stderr.puts(format_message("ERROR: We could not determine how much free space node #{self.id.inspect} has!".red.bold))
    result = false
  elsif (free_space_percent >= 90)
    @ui.stderr.puts(format_message("WARNING: Your TestLab node #{self.id.inspect} is using #{free_space_percent}% of its available disk space!".red.bold))
    result = false
  end

  # get the names of all of the defined containers
  my_container_names = self.containers.map(&:id)

  # ephemeral containers parent containers have a "-master" suffix; we need to remove these from the results or we will complain about them
  node_container_names = self.lxc.containers.map(&:name).delete_if do |node_container_name|
    my_container_names.any?{ |my_container_name| "#{my_container_name}-master" == node_container_name }
  end

  unknown_container_names = (node_container_names - my_container_names)
  unknown_running_container_names = self.lxc.containers.select{ |c| (unknown_container_names.include?(c.name) && (c.state == :running)) }.map(&:name)

  if unknown_container_names.count > 0
    if unknown_running_container_names.count > 0
      @ui.stderr.puts(format_message("WARNING: You have *running* containers on your TestLab node #{self.id.inspect} which are not defined in your Labfile!".red.bold))
      @ui.stderr.puts(format_message(">>> You may need to manually stop the following containers: #{unknown_running_container_names.join(', ')}".red.bold))
      result = false
    end

    @ui.stderr.puts(format_message("WARNING: You have containers on your TestLab node #{self.id.inspect} which are not defined in your Labfile!".red.bold))
    @ui.stderr.puts(format_message(">>> You may need to manually remove the following containers: #{unknown_container_names.join(', ')}".red.bold))
  end

  result
end