Changes for page Failover - Configuration

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16	16	== 2. Key concepts ==
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18		-This microlearning describes how to configure (parts of) your flow(s) to set up the grouping and, if needed, the failover functionality on the flow level. The grouping functionality is relevant when faced with maintenance and outages of systems connected to your model. The failover functionality not only assists in that case but also allows you to have a fallback option on an active connection.
	18	+This microlearning describes how to configure (parts of) your flow(s) to set up the grouping and, if needed, the failover functionality on the flow level. The grouping 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.
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20	20	== 3. Flow Configuration ==
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28	28	{{info}}Note that the options above are available in all inbound components. The one chosen above is simply an illustration of how to configure.{{/info}}
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30		-Once on the "Advanced" tab, you must define the group name. You can determine the group name if this is the first flow you are changing. In all subsequent flows, you want to add to the same group, you must use the **same** group name.
	30	+Once on the "Advanced" tab, you must define the group name. You can determine the group name if this is the first flow you change. In all subsequent flows, you want to add to the same group, you must use the **same** group name.
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32	32	[[image:Main.Images.Microlearning.WebHome@grouping-and-failover--intermediate-grouping-and-failover-flow-configuration-define-group-name.png]]
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44	44	== 3.2 Failover ==
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46		-In case you want to expand the grouping functionality to include a active/passive failover component you need to change the settings on the inbound component. Apart from specifying the name of the group you need to configure the auto-startup option on "No" so the failover configuration can take the correct actions in all situations.
	46	+If you want to expand the grouping functionality to include an active/passive failover component, you need to change the settings on the inbound component. Apart from specifying the group name, you need to configure the auto-startup option on "No" so the failover configuration can take the correct actions in all situations.
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48	48	[[image:Main.Images.Microlearning.WebHome@grouping-and-failover--intermediate-grouping-and-failover-flow-configuration-failover-example-group.png]]
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54	54	== 3.3 Failover Infra ==
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56		-The configuration of the infra flow of the runtime for which you want to configure the failover is detailed and only works in case you configured all support objects correctly. Although we explain the various steps here in the documentation we advise to utilize the store item that we created for this that will guide you in setting this up correctly.
	56	+The configuration of the infra flow of the runtime for which you want to configure the failover is detailed and only works if you configure all support objects correctly. Although we explain the various steps in the documentation, we advise utilizing the store item we created for this that will guide you in setting this up correctly.
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58		-The configuration consists of at least three seperate support objects. Two of them are needed once (infinispan cache manager and clustered lock registry) were the other is needed per unique group you have defined within the context of your runtime. So if you have two unique group names within the runtime you need two leader initiator support objects.
	58	+The configuration consists of at least three separate support objects. Two are needed once (infinispan cache manager and clustered lock registry), whereas the other is required per unique group you have defined within the context of your runtime. So, if you have two unique group names within the runtime, you need two leader initiator support objects.
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60		-Given this let us first look at the infinispan cache manager
61		-[[image:Main.Images.Microlearning.WebHome@emagiz-runtime-management--intermediate-runtime-management-deploy-agent-command.png]]
	60	+=== 3.3.1 Infinispan Cache Manager ===
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63		-Once the agent is installed, eMagiz can manage the machine to deploy new runtimes or update runtimes as needed. Also, the container runtime can be controlled with start, stop, and reset commands. Please consult this [[microlearning>>doc:Main.eMagiz Academy.Microlearnings.Intermediate Level.eMagiz Runtime Management.intermediate-emagiz-runtime-management-interpret-on-premise-logging.WebHome||target="blank"]] to inspect the on-premises runtime logs.
	62	+Given this, let us first look at the Infinispan cache manager. You can add this support object in the [[standard manner>>doc:Main.eMagiz Academy.Microlearnings.Crash Course.Crash Course Platform.crashcourse-platform-create-support-objects-introduction.WebHome||target="blank"]] by searching for "infinispan cache manager."
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	64	+[[image:Main.Images.Microlearning.WebHome@grouping-and-failover--intermediate-grouping-and-failover-flow-configuration-cache-manager-search-result.png]]
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	66	+Once found, give it a name and fill in a cluster name.
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	68	+[[image:Main.Images.Microlearning.WebHome@grouping-and-failover--intermediate-grouping-and-failover-flow-configuration-cache-manager-basic.png]]
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	70	+Once done, switch to the "Advanced" tab, select the option "TCP Ping," and fill in the "Host address" and "Other host addresses". Once filled in, press Save to keep your changes.
	71	+
	72	+[[image:Main.Images.Microlearning.WebHome@grouping-and-failover--intermediate-grouping-and-failover-flow-configuration-cache-manager-advanced.png]]
	73	+
	74	+=== 3.3.2 Clustered Lock Registry ===
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	76	+Now that we have the cache manager, we can configure the next support object on our list, the clustered lock registry. You can add this support object in the [[standard manner>>doc:Main.eMagiz Academy.Microlearnings.Crash Course.Crash Course Platform.crashcourse-platform-create-support-objects-introduction.WebHome||target="blank"]] by searching for "lock registry."
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	78	+[[image:Main.Images.Microlearning.WebHome@grouping-and-failover--intermediate-grouping-and-failover-flow-configuration-lock-registry-search-result.png]]
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	80	+Once found, name it and select the cache manager support object you created.
	81	+
	82	+[[image:Main.Images.Microlearning.WebHome@grouping-and-failover--intermediate-grouping-and-failover-flow-configuration-lock-registry-basic.png]]
	83	+
	84	+=== 3.3.3 Leader Initiator ===
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	86	+Lastly, we need to configure a leader initiator for each **unique** group we have defined within the context of the runtime, and that uses the failover functionality. You can add this support object in the [[standard manner>>doc:Main.eMagiz Academy.Microlearnings.Crash Course.Crash Course Platform.crashcourse-platform-create-support-objects-introduction.WebHome||target="blank"]] by searching for "leader."
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	88	+[[image:Main.Images.Microlearning.WebHome@grouping-and-failover--intermediate-grouping-and-failover-flow-configuration-leader-initiator-search-result.png]]
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	90	+Once found, give it a name, define the role name (which should **exactly** match the name you gave in the inbound components), and link it to the lock registry.
	91	+
	92	+[[image:Main.Images.Microlearning.WebHome@grouping-and-failover--intermediate-grouping-and-failover-flow-configuration-leader-initiator-basic.png]]
	93	+
65	65	== 4. Key takeaways ==
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67		-* The eMagiz Docker agent needs to be installed to allow runtime to be installed on the on-premises server
	96	+* Grouping is beneficial when external systems go through maintenance or downtime.
	97	+* Failover can have the additional benefit of having a fallback scenario while still adhering to the requirement that there can only be one active connection at a time
	98	+* The role naming in both grouping and failover is crucial. The whole name needs to be matched fully to make it work.
	99	+* For the infra configuration of the failover setup, we have a store item that you can use.
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69	69	== 5. Suggested Additional Readings ==
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