Merge pull request #738 from globocom/fixing_bugs_add_instance

Fixing bugs to add new read only instances, waiting create dns and ad…

Author: ricardosdias

dbaas/drivers/replication_topologies/base.py

@@ -240,6 +240,7 @@ def get_add_database_instances_first_steps(self):
             'workflow.steps.util.host_provider.AllocateIP',
             'workflow.steps.util.host_provider.CreateVirtualMachine',
             'workflow.steps.util.dns.CreateDNS',
+            'workflow.steps.util.dns.CheckIsReady',
             'workflow.steps.util.vm.WaitingBeReady',
             'workflow.steps.util.vm.UpdateOSDescription',
             'workflow.steps.util.volume_provider.NewVolume',

dbaas/logical/services.py

@@ -95,7 +95,7 @@ def execute(self):
 
         max_read_hosts = Configuration.get_by_name_as_int('max_read_hosts', 5)
         qtd_new_hosts = self.number_of_instances
-        current_read_nodes = len(self.database.infra.instances.filter(read_only=True))
+        current_read_nodes = len(self.database.infra.instances.filter(read_only=True, status=1))
         total_read_hosts = qtd_new_hosts + current_read_nodes
         if total_read_hosts > max_read_hosts:
             raise exceptions.ReadOnlyHostsLimit(