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Merge pull request #216 from jpetazzo/googl

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Replace goo.gl with 1.1.1.1
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Jérôme Petazzoni
2018-04-20 02:36:15 -05:00
committed by GitHub
parent b7a2cde458 6475a05794
commit 19f0ef9c86
1 changed files with 14 additions and 13 deletions
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slides/kube/kubectlrun.md
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@@ -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,
<br/>
at the Google NOC ...
<br/>
<br/>
.small[“Why the hell]
<br/>
.small[are we getting 1000 packets per second]
<br/>
.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!