Example of an upgrade from 7.2 to 7.4.2
Backing up configs:
cd /opt/atlassian/jira/
cp -R conf/ ~/
Downloading the latest version:
wget https://www.atlassian.com/software/jira/downloads/binary/atlassian-jira-core-7.4.2-x64.bin
Installing:
service jira stop
chmod a+x atlassian-jira-core-7.4.2-x64.bin
sh atlassian-jira-core-7.4.2-x64.bin
mv server.xml server_orig.xml
cp ~/conf/server.xml ./
service jira start
If there is a MySQL error
vim /var/atlassian/application-data/jira/dbconfig.xml
storage_engine- for versions of MySQL below 5.7default_storage_engine- for versions of MySQL of 5.7 and above
