For monitoring we ended up using collectd + Grafana, but it takes a while to set it up and make it work, it's probably better to go with an external service if

For monitoring we ended up using collectd + Grafana, but it takes a while to set it up and make it work, it's probably better to go with an external service if you don't want to spend time. We also used a bit https://pm2.keymetrics.io/ https://pm2.keymetrics.io/ monitoring, it's pretty nice, but it becomes really expensive if you have more than 2-3 servers.