Fabian Lee : Software Engineer

Prometheus: external template for AlertManager html email with kube-prometheus-stack

July 3, 2022
Categories: Kubernetes, Monitoring

The kube-prometheus-stack bundles AlertManager for taking action on Prometheus alerts. And if you are customizing the Heml custom values file to configure email alerting, there are multiple options available. The simplest is to allow the system to fallback to using the default subject and html templates. But if you need to tailor the email content … Prometheus: external template for AlertManager html email with kube-prometheus-stack

Python: Sending HTML emails via Gmail API or SMTP relay

October 23, 2019
Categories: Python

Although sending a plain text message through an unauthenticated SMTP relay might be easily done with a few lines of Python code, sending rich HTML email through authenticated relays or via the Gmail API using OAuth2 requires a bit of work. In this article, I will provide sample code for sending rich HTML email with … Python: Sending HTML emails via Gmail API or SMTP relay

Ubuntu: Testing authenticated SMTP over TLS/SSL

June 22, 2017
Categories: Linux, Scripting

SMTP mail relays exposed to the internet typically use a combination of SSL and authenticated SMTP to avoid abuse by malicious actors. This is an excellent choice from a security perspective, but makes smoke testing a bit more complex than just opening telnet.

Zabbix: Alert to PagerDuty using Zabbix3

January 8, 2017
Categories: DevOps

Having Zabbix send alert mails directly to user groups is typically outgrown as the system matures and the number of alerts increase, new lines of business and engineering groups are on-boarded, and on-call scheduling is implemented. If you already use PagerDuty for on-call scheduling, then it makes perfect sense to have Zabbix create incidents in … Zabbix: Alert to PagerDuty using Zabbix3