diff --git a/slides/kube/kubectlrun.md b/slides/kube/kubectlrun.md index 015c02f9..f9e9f373 100644 --- a/slides/kube/kubectlrun.md +++ b/slides/kube/kubectlrun.md @@ -20,9 +20,10 @@ .exercise[ -- Let's ping `goo.gl`: +- Let's ping `1.1.1.1`, Cloudflare's + [public DNS resolver](https://blog.cloudflare.com/announcing-1111/): ```bash - kubectl run pingpong --image alpine ping goo.gl + kubectl run pingpong --image alpine ping 1.1.1.1 ``` ] @@ -245,15 +246,15 @@ Unfortunately, `--follow` cannot (yet) be used to stream the logs from multiple --- -class: title +## Aren't we flooding 1.1.1.1? -Meanwhile, -
-at the Google NOC ... -
-
-.small[“Why the hell] -
-.small[are we getting 1000 packets per second] -
-.small[of ICMP ECHO traffic from these IPs?!?”] +- If you're wondering this, good question! + +- Don't worry, though: + + *APNIC's research group held the IP addresses 1.1.1.1 and 1.0.0.1. While the addresses were valid, so many people had entered them into various random systems that they were continuously overwhelmed by a flood of garbage traffic. APNIC wanted to study this garbage traffic but any time they'd tried to announce the IPs, the flood would overwhelm any conventional network.* + + (Source: https://blog.cloudflare.com/announcing-1111/) + +- It's very unlikely that our concerted pings manage to produce + even a modest blip at Cloudlare's NOC!