CNAME Record Pools are used to balance traffic across multiple hostnames. Traffic can be distributed based on weight or the performance of the systems in the pool. Weighted distribution is also called Round Robin (when the weights are even) and Weighted Round Robin (when they are not).
To learn more about load balancing, use cases, and video tutorials go here.
1. Select Managed DNS in the sidebar menu, and then choose CNAME Record Pools from the drop down.
2. Click the Add New Pool button.
3. In this screen, you will add the information for your pool. Follow the steps below:
A) Name: Give your pool configuration an identifiable name.
B) Num Return: enter the number of hostnames you want to have returned in the pool.
C) Min Available: enter the minimum number of hostnames that must be available in the pool.
D) Host: Enter the hostname you want to add to your configuration.
E) Weight: You can give each of the hosts in a pool a different weight, depending on if you want to send more or less traffic to each one. A higher weight will send more traffic to that host. See the Weighted Round Robin tutorial to learn more.
F) Sonar Check: If you have a check in Constellix Sonar already created, you can select it here. If you select a check, then the pool will only serve traffic to that host if it is up, according to Sonar.
G) Enabled: You can move the slider to On or Off to control whether traffic will flow to that host or not.
I) Add Another Host: Additional hostnames can also be added to load balance traffic, just click the Add Another Host button.
J) Save:When you are done, click Save.
NOTE: Hostnames can be enabled or disabled within the pool. Disabled hostnames remain present in the configuration, but will not be active on the name servers.