There are several JDK options available when installing FlexDeploy. The main requirement is that the version of Java used is version 821 or 17. if your Linux distribution includes a build of OpenJDK 8 21 or 17, you can use that version.
Amazon Corretto - Amazon's build of OpenJDK with security updates https://docs.aws.amazon.com/corretto/latest/corretto-8-ug/downloads-list.htmlOpenJDK - https://adoptopenjdk.net/releases.html
OpenJDK - Adoptium - OpenJDK
Oracle JDK - Oracle's build for those who are licensed httpmeet their license restrictions - https://www.oracle.com/technetwork/java/javasetechnologies/downloads/jdk8-downloads-2133151.html#java21