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Backup configuration

Stop the services

systemctl stop tomcat9.service
systemctl stop aducid-aaa.service
systemctl stop httpd.service

Backup the following files and directories

/opt/tomcat/conf/ADUCID.properties
/opt/tomcat/webapps/*.*
/opt/aaa/conf/*.*

Make sure that you made backup of the files

/opt/aaa/conf/aducid-aaa.conf
/opt/aaa/conf/aducid-aim.conf

at least, because this files are replaced by the upgrade process.

Backup database

pg_dump –verbose –inserts –file=aim.dump aim
pg_dump –verbose –inserts –file=provider.dump provider