Note: This document is based on Jelastic version 3.3.1.
Within the confines of the multiple environment regions approach, the initially chosen location of the project can be easily changed using the migration option (obviously, if you have an access to several environment regions). It represents an extremely powerful tool, that can help you to benefit in both cost and productivity - as an example, you can choose cheaper hardware for the development/testing stages and subsequently migrate your production-ready application to the hardware with the best parameters, just before the release.
click on the Change environment topology button and choose the Migrate option within the regions’ list above
select the Settings button next to the desired environment and switch to the Migration menu option
In both cases, you’ll see the same frame opened with a Current region of the chosen environment stated and an option for choosing the Target region, i.e. the hardware it should be migrated to.
Just lower down the tab the Live migration section is placed, either with the special switcher shown or providing some additional info, depending on the chosen target region. Here you can define which migration type (among the two provided ones) should be used:
live migration - available only between the regions, marked with the special LM label within the list (this depends on the physical location of a particular region’s hardware)
offline migration - can be used for any environment regions
State all the necessary conditions and click on Verify & Migrate at the bottom of the section to initiate the relocation. Confirm your decision within the appeared pop-up frame.
Once the migration is completed, the appropriate information message will appear at the dashboard and the region label next to the environment will be changed. In addition, you’ll receive the notification email with the migration details (like its duration for every container and any changes that happened with their parameters due to this process).
And below we’ll consider both migration modes in more details.