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# File 'lib/opsworks/commands/ssh.rb', line 16
def self.run
options = Trollop::options do
banner <<-EOS.unindent
#{SSH.banner}
Options:
EOS
opt :update, "Update ~/.ssh/config directly"
opt :backup, "Backup old SSH config before updating"
opt :quiet, "Use SSH LogLevel quiet", default: true
opt :key_checking,
"Check SSH host keys (this can be annoying since dynamic " <<
"instances often change IP number)", short: 'c', default: false
end
config = OpsWorks.config
client = AWS::OpsWorks::Client.new
result = client.describe_instances(stack_id: config.stack_id)
instances = result.instances.select { |i| i[:status] != "stopped" }
instances.map! do |instance|
ip = instance[:elastic_ip] || instance[:public_ip]
parameters = {
"Host" => "#{instance[:hostname]} #{ip}",
"HostName" => ip,
"User" => config.ssh_user_name,
}
parameters.merge!({
"StrictHostKeyChecking" => "no",
"UserKnownHostsFile" => "/dev/null",
}) unless options[:host_checking]
parameters["LogLevel"] = "quiet" if options[:quiet]
parameters.map{ |param| param.join(" ") }.join("\n ")
end
new_contents = "\n#{SSH_PREFIX}\n#{instances.join("\n")}\n#{SSH_POSTFIX}"
if options[:update]
ssh_config = "#{ENV['HOME']}/.ssh/config"
old_contents = File.read(ssh_config)
if options[:backup]
base_name = ssh_config + ".backup"
if File.exists? base_name
number = 0
file_name = "#{base_name}-#{number}"
while File.exists? file_name
file_name = "#{base_name}-#{number += 1}"
end
else
file_name = base_name
end
File.open(file_name, "w") { |file| file.puts old_contents }
end
File.open(ssh_config, "w") do |file|
file.puts old_contents.gsub(/#{SSH_PREFIX}.*#{SSH_POSTFIX}/m, '')
file.puts new_contents
end
puts "Successfully updated #{ssh_config} with " <<
"#{instances.length} instances!"
else
puts new_contents.strip
end
end
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