How do I get logs from all pods of a Kubernetes replication controller?

Question

Running kubectl logs shows me the stderr/stdout of one Kubernetes container.

How can I get the aggregated stderr/stdout of a set of pods, preferably those

Answer 1

I use this simple script to get a log from the pods of a deployment:

#!/usr/bin/env bash

DEPLOYMENT=$1

for p in $(kubectl get pods | grep ^${DEPLOYMENT}- | cut -f 1 -d ' '); do 
    echo --------------------------- 
    echo $p 
    echo --------------------------- 
    kubectl logs $p
done

Gist of the script

Usage: log_deployment.sh "deployment-name".

Script will then show log of all pods that start with that "deployment-name".