bash_profile

# If we don't have a kubeconfig file, let's create one.
# (This is necessary for kube_ps1 to operate correctly.)
if ! [ -f ~/.kube/config ]; then
  # If there is a ConfigMap named 'kubeconfig',
  # extract the kubeconfig file from there.
  # We need to access the Kubernetes API, so we'll do it
  # using the well-known endpoint.
  (
    # Make sure that the file will have locked-down permissions.
    # (Some tools like Helm will complain about it otherwise.)
    umask 077
    export KUBERNETES_SERVICE_HOST=kubernetes.default.svc
    export KUBERNETES_SERVICE_PORT=443
    if kubectl get configmap kubeconfig >&/dev/null; then
      echo "✏️ Downloading ConfigMap kubeconfig to .kube/config."
      kubectl get configmap kubeconfig -o json |
        jq -r '.data | to_entries | .[0].value' > ~/.kube/config
    else
      SADIR=/var/run/secrets/kubernetes.io/serviceaccount
      # If we have a ServiceAccount token, use it.
      if [ -r $SADIR/token ]; then
        echo "✏️ Generating .kube/config using ServiceAccount token."
        kubectl config set-cluster shpod \
                --server=https://kubernetes.default.svc \
                --certificate-authority=/$SADIR/ca.crt
        kubectl config set-credentials shpod \
                --token=$(cat $SADIR/token )
        kubectl config set-context shpod \
                --cluster=shpod \
                --user=shpod
        kubectl config use-context shpod
      fi
    fi
  )
fi
# Note that we could also just set the following variables:
#export KUBERNETES_SERVICE_HOST=kubernetes.default.svc
#export KUBERNETES_SERVICE_PORT=443
# ...But for some reason, that doesn't work with impersonation.
# (i.e. using "kubectl get pods --as=someone.else")

if [ -f /etc/HOSTIP ]; then
  HOSTIP=$(cat /etc/HOSTIP)
else
  HOSTIP="0.0.0.0"
fi
KUBE_PS1_PREFIX=""
KUBE_PS1_SUFFIX=""
KUBE_PS1_SYMBOL_ENABLE="false"
KUBE_PS1_CTX_COLOR="green"
KUBE_PS1_NS_COLOR="green"
PS1="\e[1m\e[31m[\$HOSTIP] \e[0m(\$(kube_ps1)) \e[34m\u@\h\e[35m \w\e[0m\n$ "

export EDITOR=vim
export PATH="$HOME/.krew/bin:$PATH"

alias k=kubectl
complete -F __start_kubectl k
. /usr/share/bash-completion/completions/kubectl.bash

export HISTSIZE=9999
export HISTFILESIZE=9999
shopt -s histappend
trap 'history -a' DEBUG
export HISTFILE=~/.history

trap exit TERM