Execute a command within a container running in Rancher k8s

rancher-exec

#!/bin/bash
set -e
set -x

SCRIPT_NAME=$(basename $0)

if [ -z "$4" ]; then
    echo "${SCRIPT_NAME} <env> <namespace> <pod name> <command> [args]" 1>&2
    exit 1
fi;

env=$1
shift

namespace=$1
shift

name=$1
shift

pod=$(compose-flow -e ${env} rancher kubectl get pods --namespace ${namespace} | \
  grep "^${name}" | awk '{print $1}' | head -n1)

exec compose-flow -e ${env} rancher kubectl exec -ti --namespace ${namespace} $pod -- "$@"

One thing this is missing is the ability to specify a specific container in a multi-container pod.