Python Azure SDK: create multiple VMs in the same cloud service -


i trying create multiple vms in same cloud service (but in unique deployments within cloud service). below produces 1 machine have name mycluster-master-3 (given self.nummasters == 3). in other words, last machine created , can seen in azure management portal. note there no errors when execute code self.nummasters == 3:

for node in range(self.nummasters):             logger.info('deploying virtual machine "%s"...' % (self.clustername + '-master-' + str(node + 1)))             logger.info('creating linuxconfig...')             linuxconfig = azure.servicemanagement.linuxconfigurationset(                 host_name=self.clustername + '-master-' + str(node + 1),                 user_name='auser',                 user_password='auser123!',                 disable_ssh_password_authentication=true             )             # destination storage account container/blob vm disk             # created             media_link = 'https://xxxxxxx.blob.core.windows.net/xxxxxx/%s.vhd' % (self.clustername + '-master-' + str(node + 1))             os_hd = azure.servicemanagement.osvirtualharddisk(image_name, media_link)             logger.info('creating virtual machine deployment...')             self.sms.create_virtual_machine_deployment(                 service_name=servicename,                 deployment_name=self.clustername + '-master-' + str(node + 1),                 label=self.clustername + '-master-' + str(node + 1),                 role_name=self.clustername + '-master-' + str(node + 1),                 system_config=linuxconfig,                 os_virtual_hard_disk=os_hd,                 role_size=self.instancetype,                 deployment_slot='production'             )

i thought having vms in 1 cloud service allow them talk each other internally without being exposed machines in other cloud services. apparently, cloud service provides single public ip vm within it. perhaps that's why 1 vm created, although, conceptually, thought single cloud service can have multiple vm instances. confuses hell out of me. thinking need have 1 cloud service each vm instance in cluster. way, of machines have public ip , can accessed on internet. need put cloud services within virtual network. way, traffic between them not routed through internet. assumption correct? there better/other way accomplish want (a cluster of machines talking each other securely , fast, yet ssh-able through internet.)

first of - if creating cluster, not put vms in separate cloud services. please read thouroughly article: manage availbility of virtual mchines.

then main topic: multiple vms can , should deployed same cloud service when serve common purpose (building cluster).

vms in same cloud service can talk each other without going internet , without need special, beside opening firewalls on vms themselfs.

for how name resolution works in azure whole, can read following article: name resolution vm , role instances.

one vip per cloud service - so. why should issue? please elaborate on reason require multiple vip (public ip addresses) single cloud service (your cluster). following article give idea different options load balancing clustered vms: load balancing virtual machines.

on how configure ssh per-vm access, can create endpoints vms different public ports.

last, not least, reasony why end 1 vm created. can create 1 vm in cloud service at time. cannot create second vm in same cloud service while first 1 still being created. so, creation of vm1 should 100% complete, can create second vm in same cloud service.


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