In the Advanced settings section of this resource, you can add performance and syslog data sources. You can access all the data via the log search, using a special query language. If you are new to this language, you should visit https://docs.loganalytics.io/docs/Learn/Getting-Started/Getting-started-with-queries and https://docs.loganalytics.io/index.
For now, just execute the query:
search *
To see whether there is data available, limit the search to one virtual machine:
search * | where Computer == "centos01"
Or to get all the syslog messages, as a test, you can reboot your virtual machine, or play with this:
logger -t <facility>. <priority> "message"
Execute the following query in syslog to view the results:
Syslog | ...
