belongs_to(:job, foreign_key: :job_uuid, primary_key: :uuid)
attr_accessor :job_readable
+ UNUSED_NODE_IP = '127.40.4.0'
+
api_accessible :user, :extend => :common do |t|
t.add :hostname
t.add :domain
t.add lambda { |x| Rails.configuration.compute_node_nameservers }, :as => :nameservers
end
+ after_initialize do
+ @bypass_arvados_authorization = false
+ end
+
def domain
super || Rails.configuration.compute_node_domain
end
end
end
- # Assign hostname
+ # Assign slot_number
if self.slot_number.nil?
try_slot = 0
begin
end
raise "No available node slots" if try_slot == Rails.configuration.max_compute_nodes
end while true
+ end
+
+ # Assign hostname
+ if self.hostname.nil? and Rails.configuration.assign_node_hostname
self.hostname = self.class.hostname_for_slot(self.slot_number)
end
end
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.dns_server_update(self.hostname, self.ip_address)
+ if ip_address_changed? && ip_address
+ Node.where('id != ? and ip_address = ?',
+ id, ip_address).each do |stale_node|
+ # One or more(!) stale node records have the same IP address
+ # as the new node. Clear the ip_address field on the stale
+ # nodes. Otherwise, we (via SLURM) might inadvertently connect
+ # to the new node using the old node's hostname.
+ stale_node.update_attributes!(ip_address: nil)
end
end
+ if hostname_was && hostname_changed?
+ self.class.dns_server_update(hostname_was, UNUSED_NODE_IP)
+ end
+ if hostname && (hostname_changed? || ip_address_changed?)
+ self.class.dns_server_update(hostname, ip_address || UNUSED_NODE_IP)
+ end
end
def self.dns_server_update hostname, ip_address
end
def self.hostname_for_slot(slot_number)
- "compute#{slot_number}"
+ config = Rails.configuration.assign_node_hostname
+
+ return nil if !config
+
+ sprintf(config, {:slot_number => slot_number})
end
# At startup, make sure all DNS entries exist. Otherwise, slurmctld
# will refuse to start.
- if Rails.configuration.dns_server_conf_dir and Rails.configuration.dns_server_conf_template
+ if Rails.configuration.dns_server_conf_dir and Rails.configuration.dns_server_conf_template and Rails.configuration.assign_node_hostname
(0..Rails.configuration.max_compute_nodes-1).each do |slot_number|
hostname = hostname_for_slot(slot_number)
hostfile = File.join Rails.configuration.dns_server_conf_dir, "#{hostname}.conf"
- if !File.exists? hostfile
+ if !File.exist? hostfile
n = Node.where(:slot_number => slot_number).first
if n.nil? or n.ip_address.nil?
- dns_server_update(hostname, '127.40.4.0')
+ dns_server_update(hostname, UNUSED_NODE_IP)
else
dns_server_update(hostname, n.ip_address)
end