For this example, Bamboo is installed at the following paths:

bamboo-home → /home/bamboo/bamboo-home

<<Installation folder>> → /home/bamboo/install

Common personalisations made to this file are as follows.

Java arguments, i.e:

#
#  Occasionally Atlassian Support may recommend that you set some specific JVM arguments.  You can use this variable below to do that.
#
JVM_SUPPORT_RECOMMENDED_ARGS:="-Dbamboo.ec2.agent.endpoint=http://localhost:8085-XX:UseG1GC"
#

Java heap size, i.e:

#
# The following 2 settings control the minimum and maximum given to the Bamboo Java virtual machine.  In larger Bamboo instances, the maximum amount will need to be increased.
#
JVM_MINIMUM_MEMORY="2048m"
JVM_MAXIMUM_MEMORY="2048m"
#

There can be more, depending on you configuration of Bamboo 5.14.4.1.

This file contains the configuration for the ports on which Bamboo will listen, other than SSL, reverse Proxy configuration, etc. that shuld be used for your new Bamboo 6.8.0.

This file contains the location of the bamboo-home directory for your new Bamboo version.

bamboo@bamboo-VM:~/install_5.14.4.1/atlassian-bamboo/WEB-INF/classes$ cat bamboo-init.properties 
## You can specify your bamboo.home property here or in your system environment variables.

bamboo.home=/home/bamboo/bamboo-home

It's safe to just copy the file over from the previous version:

bamboo@bamboo-VM:~$ ls
atlassian-bamboo-6.8.0.tar.gz  bamboo-home  install  install_5.14.4.1
bamboo@bamboo-VM:~$ cp install_5.14.4.1/atlassian-bamboo/WEB-INF/classes/bamboo-init.properties install/atlassian-bamboo/WEB-INF/classes/
bamboo@bamboo-VM:~$ 

You can start it using the appropriate command taking in consideration how the service was configured.

Systemd Service Configuration

bamboo@bamboo-VM:/$ systemctl start bamboo

SysV Init Script

bamboo@bamboo-VM:/$ /etc/init.d/bamboo start

Either way, your new Bamboo 6.8 should be launched as service now.

Wait a little bit for the upgrade process to finish, access Bamboo via http://<Your Bamboo URL or IP>:8085 in one of our supported  WEB browsers, find the Installation Wizzard starting and check if everything is working as expected. If Bamboo did not start, please review the prerequisites and make sure you followed all the steps correctly.

If the problem persists, you can also create a support ticket. To help us address the issue, attach the the content of the <<Installation folder>>/logs/ folder to the ticket.

After you finish Bamboo upgrade:

1. Make sure everything is working as expected
2. Double check if your remote agents are back online
3. Double check if the application links with other tools are working

4. Remove the folders created during the upgrade process:

   bamboo@bamboo-VM:~$ ls
   atlassian-bamboo-6.8.0.tar.gz  bamboo-home  install_5.14.4.1  install
   bamboo@bamboo-VM:~$ rm -rf ./install_5.14.4.1/ 
   bamboo@bamboo-VM:~$ rm -rf ./atlassian-bamboo-6.8.0.tar.gz 
   bamboo@bamboo-VM:~$ ls
   bamboo-home  install

If something wrong happened during the upgrade:

1. Stop the application (Step 1)
2. Restore the backups created during the pre-upgrade tasks
3. Restore Bamboo Database

If you could't rollback the upgrade, please create a support ticket. To help us address the issue, attach the the content of the <<Installation folder>>/logs/ folder to the ticket.