Apache ZooKeeper is a centralized service required for clustering.
Apache ZooKeeper is a critical part of the clustering architecture. You must use ZooKeeper Version 3.4.6 or later to maintain and synchronize group services in the CloudBees CD/RO cluster. CloudBees CD/RO includes a tool called ZKConfigTool, which you can use to populate ZooKeeper quickly with CloudBees CD/RO configuration information.
Exhibitor can be used with ZooKeeper to monitor the synchronization between the ZooKeeper nodes. This software is not required to implement a CloudBees CD/RO cluster configuration, but can provide instance monitoring, backup, recovery, cleanup and visualization services. See the Exhibitor documentation at https://github.com/Netflix/exhibitor.
You must use a load balancer in a CloudBees CD/RO cluster. You can use any load balancer or load-balancing software for a cluster as long as the load balancer acts as an SSL endpoint and supports returning HTTP redirections.
|Transport Layer Security (TLS) has replaced Secure Sockets Layer version 3.0 (SSLv3) on the CloudBees CD/RO server and the CloudBees CD/RO web server.