This presentation contains step-by-step instructions on how to create a GoGrid Dynamic Load Balancer. The Dynamic Load Balancer is part of GoGrid's Cloud Infrastructure service as well as our Software Defined Networking (SDN) initiative. More information can be found at: http://j.mp/13JVCso

1. How To Deploy a GoGrid Dynamic Load Balancer

2. About GoGrid
GoGrid’s cloud hosting platform provides:
 Automated provisioning of infrastructure over the Internet
• Deploy and scale virtual and physical servers, storage, networking, load balancing,
and firewalls in real time across multiple data centers using GoGrid’s web-based
management console or API.
 Instant access to highly available, multi-server environments
• Access and operate using standard network protocols and IP addresses—no new
technical skills or specialized equipment required.
© 2013 GoGrid 2

3. About GoGrid’s Dynamic Load Balancers
 Prevent Application Downtime
Use load balancing to spread Internet traffic across two or more web servers. If a
server becomes unavailable, the load balancer will redirect all traffic to the remaining
online servers.
 Rapid Scaling & Application Uptime
You can use load balancers to scale infrastructure by adding additional servers to an
existing pool of load-balanced web servers to handle all incoming requests.
 Dynamically Manage Your Load
Edit load balancers, shift servers in and out of pools, and dictate traffic patterns—all
on-the-fly.
 High Availability Out-of-the-Box
Designed to be self-healing. If a load balancer fails, GoGrid’s cloud architecture
manages the failover while maintaining the same virtual IP (VIP), minimizing
disruption.
 Free 24x7 Support & Strong SLAs
More details at:
http://www.gogrid.com/products/infrastructure-load-balancers
© 2013 GoGrid 3

4. About GoGrid’s Dynamic Load Balancers (continued)
 Load Balancer Algorithm:
• Weighted Round Robin
Takes all incoming connections and routes them one at a time, server by server, based on the
weight assigned to the server.
• Weighted Least Connect
Routes incoming connections to the server with the lowest load on it based on the weight
assigned to the server. Connections are sent to each server depending on the total number of
concurrent sessions on the servers.
• Source Address Hashing
Source IP address is hashed & divided by the total weight of the server to designate which server
will receive the request.
 Persistence Options:
• None
None is the default option and will cause the selected algorithm to determine the routing.
• Session Cookie
Persist based on a server cookie.
• IP Subnet
Clients in same /24 IP subnet will be routed to the same server for a limited time.
More details at:
http://www.gogrid.com/products/infrastructure-load-balancers
© 2013 GoGrid 4

5. About GoGrid’s Dynamic Load Balancers (continued)
 Health Checker:
• HTTP
Verifies the web server is responding. Checks port and path specified.
• Connect
Tests for a successful IP connection by checking a defined port.
• SSL
Tests for an SSL connection on the real server. Verifies that client can open an encrypted
connection to the server.
 Monitoring:
GoGrid also provides monitoring statistics for Dynamic Load Balancers via the API and through the
management console. The following statistics are available by previous hour, day, week, month, and
year:
• Inbound traffic
• Outbound traffic
More details at:
• Current sessions http://www.gogrid.com/products/infrastructure-load-
• Failed health checks balancers
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6. 5 Steps to Create a Dynamic
Load Balancer on GoGrid
© 2013 GoGrid 6

7. Steps to Deploy a GoGrid Dynamic Load Balancer
1. Add a Dynamic Load Balancer object
2. Select Real IPs (IP address of server)
3. Add a Health Checker
4. Add a VIP (virtual IP)
5. Add a Listener
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8. Step #1 – Add a Dynamic
Load Balancer object
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9. #1 – About the Dynamic Load Balancer Object
 GoGrid’s Dynamic Load Balancer object is a collection of other associated
objects:
• Real IPs
• Listeners
• VIP
• Health Checker
 All associated objects must be fully created and configured for the Dynamic
Load Balancer to perform properly.
 The Dynamic Load Balancer will have a virtual IP (VIP) associated with it (not
one of your GoGrid public IPs).
 The Dynamic Load Balancer is highly available and designed to automatically
failover without configuration.
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10. #1 – Click “Add”
Click
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11. #1 – Choose “Dynamic Load Balancer”
Choose
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12. #1 – Dynamic Load Balancer Form
Next Step
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13. Step #2 – Select Real IPs
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14. #2 – About the Real IPs
 Real IPs are servers you want to place behind the
Dynamic Load Balancer
 They typically are clones of servers (similarly
configured servers)
 You can assign and edit the “weights” of each Real
IP for the load-balancing algorithm
 Optionally, you can add an external server (or IP)
to the Real Server pool (for backup or failover
scenarios)*
* Additional fixed rate charge is incurred for external IPs. May take up to 15 seconds for the Real IP to recognize an external IP.
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15. #2 – Add a Real IP
Click
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16. #2 – Choose GoGrid Data Center or External IP
Choose GoGrid
Data Center External IP
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17. #2 – Choose a GoGrid IP Address
GoGrid IP address
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18. #2 – Save the Real IP
Enter Name,
Description, Weight,
& Set Status
Click Save
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19. #2 – Creation of Real IP
Real IP created
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20. #2 – Repeat with Other Real IPs
Another Real IP
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21. Step #3 – Add a Health
Checker
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22. #3 – About the Health Checker
 Determines the “health” of a Real Server (e.g., if it is responding or not)
 Upon failure, the Health Checker moves the Real Server out of Dynamic Load
Balancer rotation
 Upon success, the Health Checker moves the Real Server back into rotation
 Options include:
• HTTP – verifies the port and path specified
• Connect – tests for a successful IP connection
• SSL – tests for an SSL connection
 Detailed Responses feedback
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23. #3 – Create the Health Checker
Click
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24. #3 – Configure the Health Checker
Select Data Center.
Enter Name, Description, &
configure Health Checker Type
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25. #3 – Save the Health Checker
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26. Step #4 – Add a VIP
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27. #4 – About the VIP
 The Dynamic Load Balancer is defined on the virtual IP (VIP) page
• The Dynamic Load Balancer can also be disabled from the VIP page
 Manage the pool of Real Servers here
• You can add or remove Real Servers from the pool on this page
 Monitor the health of the pool
• The Health Checker status is displayed on this page
• Real Servers that can receive traffic have a green lamp status
• Real Servers with a red lamp status are removed from the pool
 This is also where the VIP is first assigned to the Dynamic Load Balancer
• The VIP does not use your allocated public IP addresses and will not be in your IP
space
 Servers must be defined as Real IPs to be visible in the VIP screen
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28. #4 – Create the Virtual IP (VIP)
Click
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29. #4 – Choose a GoGrid Data Center
Choose GoGrid
Data Center
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30. #4 – Enter the VIP Details
Enter VIP
details
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31. #4 – Choose Real IPs for VIP
Select Real IPs
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32. #4 – Click Assign to Add Real IP to VIP
Real IP added
Click
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33. # 4 – Add Additional Real IPs & Save to Deploy
Additional
Real IPs
Save to
deploy
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34. #4 – VIP Deployed
VIP deployed
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35. Step #5 – Add a Listener
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36. #5 – About the Listener
 Dynamic Load Balancers allow for multiple ports on the VIP
 Listeners are tied to a specific port and are attached to the VIP
 Supported protocols:
• HTTP – used for Layer 7 web traffic (defaults to port 80)
• TCP – used for Layer 4 TCP traffic (for encrypted traffic like SSL pass-through)
 Algorithm and Health Checkers are tied to the Listener
 Supported Persistence:
• None
• Session Cookie
• IP Subnet
 Supported Algorithms:
• Weighted Round Robin
• Weighted Least Connect
• Source Address Hashing
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37. #5 – Create the Listener
Click
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38. #5 – Configure the Listener
Choose a Data Center
Enter Name &
Description
Choose a VIP
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39. #5 – Configure the Listener Protocol
Select Protocol
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40. #5 – Select the Health Checker & Persistence
Select Health Checker
Select Persistence
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41. #5 – Select the Listener Algorithm
Select Algorithm
Click Save to
complete
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42. #5 – Listener Created
Listener created
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43. Dynamic Load Balancer
Created
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44. Dynamic Load Balancer Created
Hold mouse over
Dynamic Load Balancer
icon for details
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45. More information
 Dynamic Load Balancer product page:
www.gogrid.com/products/infrastructure-load-balancers
 General website: www.gogrid.com
 Blog: blog.gogrid.com
 Twitter: @GoGrid
 Facebook: facebook.com/gogrid
© 2013 GoGrid 45