Not OP, but we use Nagios XI for such alerting, it provides SMS and email monitoring for infrastructure (disk space as an example) and service monitoring. [1]

Not OP, but we use Nagios XI for such alerting, it provides SMS and email monitoring for infrastructure (disk space as an example) and service monitoring. [1] Their open source NCPA (Nagios Cross Platform agent) plugin for Windows and Linux hosts is pretty great, though we were stung when we found out it didn't natively support SPARC as of yet unless you compiled your own client from the source (I did). [2] Plenty of other monitoring services equivalent to Nagios offer equivalent services. Nagios was just the flavour I suggested to my current employer because of my familiarity with the product over my last few employments. If you don't want to fork out the licensing for the supported version (XI), their open source version is free and relatively easy to deploy using Ansible if you don't mind writing in PHP. [3] Edit: words, grammar. [1] https://www.nagios.com/products/nagios-xi/ https://www.nagios.com/products/nagios-xi/ [2] https://github.com/NagiosEnterprises/ncpa https://github.com/NagiosEnterprises/ncpa [3] https://hobo.house/2016/06/24/automate-nagios-deployment-with-ansible/ https://hobo.house/2016/06/24/automate-nagios-deployment-wit...