Azure diagnostics tooling – a summary
In the Azure portal, on the VM's Diagnose and solve problems screen, you can find all the official guides and tools to learn more about troubleshooting various VM-related problems. Figure 6.14 shows a partial list of common scenarios documented:
Figure 6.14: Common scenarios list
These guides should give you decent tools to analyze and fix most of the problematic situations you might encounter after you have migrated a Linux VM into Azure. These are also applicable for all VMs created directly on Azure.
Let's not forget there are also various ways to ask for help from Microsoft if you have problems with Azure.