Setting up Failover - Deploy Phase
In the previous microlearning, we discussed what needs to be done in the Create phase to enable failover for systems that are configured to have them in the Design phase. Next to that, we also discussed that setting up this failover functionality in your model requires you to execute some steps in your Design, Create, and lastly Deploy phase. Picking up from what we have toggled in the Create phase, in this microlearning, we will focus on the steps and configurations that you have to make in the Deploy phase to activate the active/passive failover functionality.
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1. Prerequisites
- Intermediate knowledge of the eMagiz platform.
2. Key concepts
This microlearning describes what configuration that you will have to do in the Deploy phase, based on what you have configured in the Design and Create phase, to enable failover for systems connecting with your model. The grouping and failover functionality is relevant when faced with maintenance and outages of systems connected to your model. The failover functionality assists in that case and allows you to have a fallback option on an active connection.
3. Deploy Phase Configuration
3.1 Deploy Architecture
After finishing up your configuration in the Create phase, you can then move to your Deploy>Architecture. Here, you will see the new router containers, which we have seen in the Design>Architecture, to be added to your external machines. When you press "Start Editing" in this page, and then press "Apply to environment", you will be faced with a pop-up page that informs you that these router containers will be created for this specific environment as shown in the screenshot below.
Once you have applied the changes, if you go to the "Details" of each of those machines via right-cliking them, then you can find and set, for each failover runtime, the preferred machine to be the leader. As an example shown in the screenshot below, there are two runtimes that are enabled for failover and you can select whether that runtime running in that "External 01" machine is the preferred leader or the backup, or if you want to reset it back to "None".
When you have made your decision, and assuming that your machines are already deployed and running, then you can move to the other page discussed in the next section.
3.2 Deployment Plan
3.3 Deploy Release
4. Key takeaways
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5. Suggested Additional Readings
If you are interested in this topic and want more information, please read the help text provided by eMagiz and check out these links: