snoby

kube2iam your security partner

• Introduction
• Setup kube2iam in your cluster
• Setting up the Role in AWS
  • The Role
• Trust Relationship

superseb

Move rancher/server container with volumes to other host + change of DNS name (Host Registration URL/CATTLE_URL/API URL) for Rancher 1.6

This applies to Rancher 1.6 only

Variables used in this guide:

• Old URL: http://old.test.com:8080
• New URL: http://new.test.com:8080
• Container name running rancher/server image: rancher_server
• Old host: oldhost
• New host: newhost

so0k

Kubectl output options

Let's look at some basic kubectl output options.

Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).

We can start with:

kubectl get no

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs