https://github.com/polaris-gslb/polaris-gslb

A free, open source GSLB (Global Server Load Balancing) solution.
https://github.com/polaris-gslb/polaris-gslb

dns gslb high-availability load-balancer

Last synced: about 2 months ago
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A free, open source GSLB (Global Server Load Balancing) solution.

• Host: GitHub
• URL: https://github.com/polaris-gslb/polaris-gslb
• Owner: polaris-gslb
• License: other
• Created: 2015-08-05T13:25:34.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2022-11-08T09:27:43.000Z (almost 2 years ago)
• Last Synced: 2024-06-08T02:32:08.003Z (4 months ago)
• Topics: dns, gslb, high-availability, load-balancer
• Language: Python
• Homepage:
• Size: 338 KB
• Stars: 277
• Watchers: 39
• Forks: 83
• Open Issues: 22
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
## Polaris - guiding the traffic home.

An extendable high availability solution for the data center and beyond, Global Server Load Balancing(GSLB), DNS-based traffic manager.

* Built as an enhancement for [PowerDNS Authoritative Server](https://www.powerdns.com/auth.html).

* Load-balancing methods:

    * Weighted round-robin.

    * Topology(direct clients to end-points in the same region/datacenter).

    * Failover group(active-backup).

* Parameterized(timeout, interval, retries etc.) health monitors:

    * TCP

        * Connect to a specific port number.

        * Send string.

        * Match regular expression in response.

    * HTTP/S

        * Port number to use.

        * SSL.

        * Request a specific URL path.

        * Expect a response code from a configurable array.

    * Forced

        * Force a member to be up or down, disables health checking. 

* Ability to run health checks against an IP that is different from the member IP. 

* Up to 1024 addresses returned in a response.

* Different ways to handle the "all-pool-members-down" situation(fallback):

    * Return any configured end-points(ignore the health status).

    * Refuse query.

* Automatic SOA serial.

* A single Health Tracker can serve multiple DNS resolvers running on different machines.

* LB configuration validation on start-up operations.

* Elastic threads pool serving health checks.

* Asynchronous, non-blocking comms between the internal components.

See the [WIKI](https://github.com/polaris-gslb/polaris-core/wiki) for installation, configuration and other information.

![](https://github.com/polaris-gslb/polaris-core/wiki/overview.jpg)