Addtl metrics resources

docs/index.html

@@ -2325,6 +2325,8 @@ I don't need to SSH to another node.
 
 ]
 
+Note: we could also use a pre-built image, e.g. `nicolaka/netshoot`
+
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 ## Investigating the `rng` service
@@ -4433,6 +4435,19 @@ The editor is a bit less friendly than the one we used for InfluxDB.
 
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+## More resources on container metrics
+
+- [Docker Swarm & Container Overview](https://grafana.net/dashboards/609),
+  a custom dashboard for Grafana
+
+- [Gathering Container Metrics](http://jpetazzo.github.io/2013/10/08/docker-containers-metrics/),
+  a blog post about cgroups
+
+- [The Prometheus Time Series Database](https://www.youtube.com/watch?v=HbnGSNEjhUc),
+  a talk explaining why custom data storage is necessary for metrics
+
+---
+
 # Dealing with stateful services
 
 - First of all, you need to make sure that the data files are on a *volume*