Jannik Leenen, thank you for posting this question on Microsoft Q&A.
I understand your situation and will be happy to help you out. There are multiple options available to monitor Azure Arc servers (most of which are very similar to Azure VMs). Thus the options available for Azure VM also apply to Azure Arc connected server. The following are some of the basic ideas and links to get you started:
- VM Insights - Once you have onboarded your servers as Azure Arc Connected machine, the VM Insights can help you configure basic monitor with few clicks. These are pre-configured set of rules which collect data from VM. For more details, see Overview of VM insights.
- Similarly, the "data collection rules" can be used to configure alerts from both - Azure VMs and Azure Arc connected servers.
- Regarding your query in question related to multiple "Heartbeat" alert, you can use "Automatically resolve alerts" option. This option is only available when creating an alert rule based on log queries. For more details, see "Configure details" section of the following doc - Tutorial: Create a log query alert for an Azure resource
If you have any other specific queries, please let us know so that we can help you out.
Hope the information above helps.
If the information above helped, please click Accept answer so that it can help others in the community looking for help on similar topics.