What’s New in 4.20.0.0

Apache CloudStack 4.20.0.0 is the initial 4.20 LTS release with 190+ new features, improvements and bug fixes since 4.19, including 15 major new features. Some of the highlights include:

• Webhooks

• Dynamic and Static Routing

• Ceph RGW Object Store Support

• NSX integration

• Shared Filesystems

• Multi-arch Zones

• Simple NAS backup plugin for KVM

• Usage UI

• API documentation in UI

The full list of new features can be found in the project release notes at https://docs.cloudstack.apache.org/en/4.20.0.0/releasenotes/changes.html

Log4j Upgrade

Up until 4.19.x.x, the logging library used for the project was Log4j 1.29. The 4.20.0.0 version has updated the library to Log4j2. The new Log4j2 configuration file format is not backwards compatible with the old one. The 4.20.0.0 packages will come with the default configuration files updated. Users that have made customizations to their files must update their configuration files to match with the new format, the official Log4j documentation might help you migrate your custom configurations.

JRE Upgrade

Up until 4.19.x.x, the JRE used for ACS was JRE 11. In 4.20.0.0, JRE has been upgraded to JRE 17 as JRE 11 has reached EOL. This means that Centos7 (EL7) is no longer supported.

Events Message Bus Change

On upgrading from 4.19.x or lower, existing AMQP or Kafka intergration configurations should be moved from folder /etc/cloudstack/management/META-INF/cloudstack/core to /etc/cloudstack/management/META-INF/cloudstack/event