positive News:
I installed (the not recommended) java-1.8.0-openjdk-1.8.0.272.b10-1.el7_9.x86_64.
And configured
/knime_storage/home/knime/apache-tomcat-9.0.36/bin/setenv.sh____________________
Created by KNIME Server Installer
unset JRE_HOME
export JAVA_HOME="/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.272.b10-1.el7_9.x86_64"
export CATALINA_OPTS="-Xmx2048M -server -Dsun.jnu.encoding=UTF-8"
export UMASK=0007
…so that Knime Server uses this jdk . And startet:
/knime_storage/home/knime/apache-tomcat-9.0.36/bin/startup.sh
…and there are not exceptions mentioned in the log.
The login at the forwarded site http://[::1]:28080/knime/ is now possible.
(Forward IPv6 28080 [CompanyIpV6]:8080)
Progress will be mentioned here, there is no showstopper at the moment.
Greetings B.Kochs