- if self.hostname_changed? or self.ip_address_changed?
- if self.hostname and self.ip_address
- self.class.dns_server_update(self.hostname, self.ip_address)
+ if hostname_changed? && hostname_was
+ self.class.dns_server_update(hostname_was, UNUSED_NODE_IP)
+ end
+ if hostname_changed? or ip_address_changed?
+ if ip_address
+ Node.where('id != ? and ip_address = ? and last_ping_at < ?',
+ id, ip_address, 10.minutes.ago).each do |stale_node|
+ # 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_node.ip_address = nil
+ stale_node.save!
+ end
+ end
+ if hostname
+ self.class.dns_server_update(hostname, ip_address || UNUSED_NODE_IP)