Virtual vpn in the cloud



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vpn in cloud

OpenStack Parameters 
Following are the parameters essential for launching and deployment a VM: 

Image: 
Depending on the 
type

container
and 
disk formats
, required images or 
snapshots can be launched. 

Flavor: 
Depending on 
Virtual CPUs, Memory
and 
User Disk

tiny

small

medium

large
and 
xlarge
flavors are selected depeing on user requirements.
 

User data: 
Files in the metadata service that cloud-aware application in the guest 
instance can access. 
User_data_two_nics.txt – 
Launching with 2 NICs 
User_data_one_nic.txt 
– Launching with 1 NIC. 
The 
customization script 
was composed to enable the gateway routers to be set-up 
with two NICs default being 1 NIC. Reference to the customization script can be 
found in the Appendix E. 


20 

Key pair: 
Keypairs are SSH credentials injected into images when they are 
launched. Creating a keypair registers the public key and downloads the private key 
in the form of a 
.pem
file. A keypair with desired name is created and following the 
pop up windows downloads the private key. 

Security group: 
Security groups are set of 
IP filter rules
applied to an instance’s 
networking.
 

Meta region: 
Region where the VM is required to be launched based on user 
requirements.
 
 
Detailed descriptions for deploying VMs through OpenStack CLIs are as follows: 

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