serialize :info, Hash
serialize :properties, Hash
before_validation :ensure_ping_secret
- after_update :dnsmasq_update
+ after_update :dns_server_update
- MAX_SLOTS = 64
-
- @@confdir = Rails.configuration.dnsmasq_conf_dir
- @@domain = Rails.configuration.compute_node_domain rescue `hostname --domain`.strip
- @@nameservers = Rails.configuration.compute_node_nameservers
+ # Only a controller can figure out whether or not the current API tokens
+ # have access to the associated Job. They're expected to set
+ # job_readable=true if the Job UUID can be included in the API response.
+ belongs_to(:job, foreign_key: :job_uuid, primary_key: :uuid)
+ attr_accessor :job_readable
api_accessible :user, :extend => :common do |t|
t.add :hostname
t.add :last_ping_at
t.add :slot_number
t.add :status
+ t.add :api_job_uuid, as: :job_uuid
t.add :crunch_worker_state
t.add :properties
end
api_accessible :superuser, :extend => :user do |t|
t.add :first_ping_at
t.add :info
- t.add lambda { |x| @@nameservers }, :as => :nameservers
+ t.add lambda { |x| Rails.configuration.compute_node_nameservers }, :as => :nameservers
end
def domain
- super || @@domain
+ super || Rails.configuration.compute_node_domain
+ end
+
+ def api_job_uuid
+ job_readable ? job_uuid : nil
end
def crunch_worker_state
def status
if !self.last_ping_at
- if Time.now - self.created_at > 5.minutes
+ if db_current_time - self.created_at > 5.minutes
'startup-fail'
else
'pending'
end
- elsif Time.now - self.last_ping_at > 1.hours
+ elsif db_current_time - self.last_ping_at > 1.hours
'missing'
else
'running'
logger.info "Ping: secret mismatch: received \"#{o[:ping_secret]}\" != \"#{self.info['ping_secret']}\""
raise ArvadosModel::UnauthorizedError.new("Incorrect ping_secret")
end
- self.last_ping_at = Time.now
+
+ current_time = db_current_time
+ self.last_ping_at = current_time
@bypass_arvados_authorization = true
if self.ip_address.nil?
logger.info "#{self.uuid} ip_address= #{o[:ip]}"
self.ip_address = o[:ip]
- self.first_ping_at = Time.now
+ self.first_ping_at = current_time
end
# Record instance ID if not already known
if o[:ec2_instance_id]
if !self.info['ec2_instance_id']
self.info['ec2_instance_id'] = o[:ec2_instance_id]
- if (Rails.configuration.compute_node_ec2_tag_enable rescue true)
- tag_cmd = ("ec2-create-tags #{o[:ec2_instance_id]} " +
- "--tag 'Name=#{self.uuid}'")
- `#{tag_cmd}`
- end
elsif self.info['ec2_instance_id'] != o[:ec2_instance_id]
logger.debug "Multiple nodes have credentials for #{self.uuid}"
raise "#{self.uuid} is already running at #{self.info['ec2_instance_id']} so rejecting ping from #{o[:ec2_instance_id]}"
rescue ActiveRecord::RecordNotUnique
try_slot += 1
end
- raise "No available node slots" if try_slot == MAX_SLOTS
+ raise "No available node slots" if try_slot == Rails.configuration.max_compute_nodes
end while true
self.hostname = self.class.hostname_for_slot(self.slot_number)
- if info['ec2_instance_id']
- if (Rails.configuration.compute_node_ec2_tag_enable rescue true)
- `ec2-create-tags #{self.info['ec2_instance_id']} --tag 'hostname=#{self.hostname}'`
- end
- end
end
# Record other basic stats
save!
end
- def start!(ping_url_method)
- ensure_permission_to_save
- ping_url = ping_url_method.call({ id: self.uuid, ping_secret: self.info['ping_secret'] })
- if (Rails.configuration.compute_node_ec2run_args and
- Rails.configuration.compute_node_ami)
- ec2_args = ["--user-data '#{ping_url}'",
- "-t c1.xlarge -n 1",
- Rails.configuration.compute_node_ec2run_args,
- Rails.configuration.compute_node_ami
- ]
- ec2run_cmd = ["ec2-run-instances",
- "--client-token", self.uuid,
- ec2_args].flatten.join(' ')
- ec2spot_cmd = ["ec2-request-spot-instances",
- "-p #{Rails.configuration.compute_node_spot_bid} --type one-time",
- ec2_args].flatten.join(' ')
- else
- ec2run_cmd = ''
- ec2spot_cmd = ''
- end
- self.info['ec2_run_command'] = ec2run_cmd
- self.info['ec2_spot_command'] = ec2spot_cmd
- self.info['ec2_start_command'] = ec2spot_cmd
- logger.info "#{self.uuid} ec2_start_command= #{ec2spot_cmd.inspect}"
- result = `#{ec2spot_cmd} 2>&1`
- self.info['ec2_start_result'] = result
- logger.info "#{self.uuid} ec2_start_result= #{result.inspect}"
- result.match(/INSTANCE\s*(i-[0-9a-f]+)/) do |m|
- instance_id = m[1]
- self.info['ec2_instance_id'] = instance_id
- if (Rails.configuration.compute_node_ec2_tag_enable rescue true)
- `ec2-create-tags #{instance_id} --tag 'Name=#{self.uuid}'`
- end
- end
- result.match(/SPOTINSTANCEREQUEST\s*(sir-[0-9a-f]+)/) do |m|
- sir_id = m[1]
- self.info['ec2_sir_id'] = sir_id
- if (Rails.configuration.compute_node_ec2_tag_enable rescue true)
- `ec2-create-tags #{sir_id} --tag 'Name=#{self.uuid}'`
- end
- end
- self.save!
- end
-
protected
def ensure_ping_secret
self.info['ping_secret'] ||= rand(2**256).to_s(36)
end
- def dnsmasq_update
+ def dns_server_update
if self.hostname_changed? or self.ip_address_changed?
+ if not self.ip_address.nil?
+ stale_conflicting_nodes = Node.where('id != ? and ip_address = ? and last_ping_at < ?',self.id,self.ip_address,10.minutes.ago)
+ if not stale_conflicting_nodes.empty?
+ # One or more stale compute node records have the same IP address as the new node.
+ # Clear the ip_address field on the stale nodes.
+ stale_conflicting_nodes.each do |stale_node|
+ stale_node.ip_address = nil
+ stale_node.save!
+ end
+ end
+ end
if self.hostname and self.ip_address
- self.class.dnsmasq_update(self.hostname, self.ip_address)
+ self.class.dns_server_update(self.hostname, self.ip_address)
end
end
end
- def self.dnsmasq_update(hostname, ip_address)
- return unless @@confdir
+ def self.dns_server_update hostname, ip_address
+ ok = true
+
ptr_domain = ip_address.
split('.').reverse.join('.').concat('.in-addr.arpa')
- hostfile = File.join @@confdir, hostname
- File.open hostfile, 'w' do |f|
- f.puts "address=/#{hostname}/#{ip_address}"
- f.puts "address=/#{hostname}.#{@@domain}/#{ip_address}" if @@domain
- f.puts "ptr-record=#{ptr_domain},#{hostname}"
+
+ template_vars = {
+ hostname: hostname,
+ uuid_prefix: Rails.configuration.uuid_prefix,
+ ip_address: ip_address,
+ ptr_domain: ptr_domain,
+ }
+
+ if Rails.configuration.dns_server_conf_dir and Rails.configuration.dns_server_conf_template
+ begin
+ begin
+ template = IO.read(Rails.configuration.dns_server_conf_template)
+ rescue => e
+ logger.error "Reading #{Rails.configuration.dns_server_conf_template}: #{e.message}"
+ raise
+ end
+
+ hostfile = File.join Rails.configuration.dns_server_conf_dir, "#{hostname}.conf"
+ File.open hostfile+'.tmp', 'w' do |f|
+ f.puts template % template_vars
+ end
+ File.rename hostfile+'.tmp', hostfile
+ rescue => e
+ logger.error "Writing #{hostfile}: #{e.message}"
+ ok = false
+ end
end
- File.open(File.join(@@confdir, 'restart.txt'), 'w') do |f|
- # this should trigger a dnsmasq restart
+
+ if Rails.configuration.dns_server_update_command
+ cmd = Rails.configuration.dns_server_update_command % template_vars
+ if not system cmd
+ logger.error "dns_server_update_command #{cmd.inspect} failed: #{$?}"
+ ok = false
+ end
+ end
+
+ if Rails.configuration.dns_server_conf_dir and Rails.configuration.dns_server_reload_command
+ restartfile = File.join(Rails.configuration.dns_server_conf_dir, 'restart.txt')
+ begin
+ File.open(restartfile, 'w') do |f|
+ # Typically, this is used to trigger a dns server restart
+ f.puts Rails.configuration.dns_server_reload_command
+ end
+ rescue => e
+ logger.error "Unable to write #{restartfile}: #{e.message}"
+ ok = false
+ end
end
+
+ ok
end
def self.hostname_for_slot(slot_number)
# At startup, make sure all DNS entries exist. Otherwise, slurmctld
# will refuse to start.
- if @@confdir and
- !File.exists? (File.join(@@confdir, hostname_for_slot(MAX_SLOTS-1)))
- (0..MAX_SLOTS-1).each do |slot_number|
+ if Rails.configuration.dns_server_conf_dir and Rails.configuration.dns_server_conf_template
+ (0..Rails.configuration.max_compute_nodes-1).each do |slot_number|
hostname = hostname_for_slot(slot_number)
- hostfile = File.join @@confdir, hostname
+ hostfile = File.join Rails.configuration.dns_server_conf_dir, "#{hostname}.conf"
if !File.exists? hostfile
- dnsmasq_update(hostname, '127.40.4.0')
+ n = Node.where(:slot_number => slot_number).first
+ if n.nil? or n.ip_address.nil?
+ dns_server_update(hostname, '127.40.4.0')
+ else
+ dns_server_update(hostname, n.ip_address)
+ end
end
end
end