Alertmanager can run in a clustered mode with `--cluster*` flags. You can read more here[1]. So basically mutliple nodes can run and all Prometheus instances ar

Alertmanager can run in a clustered mode with `--cluster*` flags. You can read more here[1]. So basically mutliple nodes can run and all Prometheus instances are configured to send all alerts to all AM instances. The alerts are deduplicated at cluster level. Victoria Metrics right now runs as a single node setup. That works out for now, because as mentioned Prometheus maintains a WAL. So even if the Remote storage is down for sometime, the core functionality of alerts isn't affected. And we've setup alerts on VM health, so if it goes down, we've to act on it and get it back up. Once that happens, all the previous data also is ingested automatically. This is something that we would surely revisit on at a later point of time, and setup a proper HA on it if needed. :) [1]: https://github.com/prometheus/alertmanager/blob/master/README.md#high-availability https://github.com/prometheus/alertmanager/blob/master/READM...