- DevOps Weekly: http://www.devopsweekly.com/
- SRE Weekly: https://sreweekly.com/
- cron.weekly: https://www.cronweekly.com/
- Monitoring Weekly: http://weekly.monitoring.love/
There's occasionally a little overlap between these, but I mostly find that they cover different ground. SRE Weekly in particular has good coverage of outages and incident reports that I find interesting.