https://www.digitalocean.com/community/tutorials/how-to-install-prometheus-on-ubuntu-16-04 https://blog.csdn.net/u014029783/article/details/80001251 https://www.digitalocean.com/community/tutorials/how-to-use-alertmanager-and-blackbox-exporter-to-monitor-your-web-server-on-ubuntu-16-04