Overview# I had the opportunity to set up health checks for Virtuoso running on Amazon EC2, so this is a memo of the process.
Specifically, when Virtuoso (e.g., https://xxx.zzz/sparql ) starts returning errors due to some issue, the details are sent via email notification.
Method# The following article introduces how to set up a Virtuoso RDF store on Amazon EC2.
The above setup uses an ELB. Only one change needs to be made from the above article. The Health check path was set to /, but this should be changed to the path to the SPARQL endpoint (e.g., /sparql).
After that, I configured CloudWatch and Amazon SNS by referring to the following article.
https://dev.classmethod.jp/articles/elb-healthcheck-monitoring-by-cloudwatch-alarm/
Results# Monitoring is now possible as shown below.
When an alert occurs, an email like the following is now sent.
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