kubectl-init.sh

####################################################
# KUBECTL BASH Initial setting
#
# Installed features
# - kubectl
# - kubectl auto complete
# - kubectl alias (k)
# - kubectl plugin manager (krew)
# - kubectl plubins (ns, ctx, konfig)
#
# How to apply
# 1. open your bash shell with sudoers user
# 2. copy this gist `raw url`
# 3. change `gist-raw-url` and run this command
#    bash <(curl -sL [gist-raw-url])
# 
# Happy kubectl~!
#
####################################################

# install kubectl
echo "[Install Kubectl]"
cd /tmp
curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl

# kubectl auto-complete
sudo apt-get install -y bash-completion
echo '# KUBECTL CONFIG' >>~/.bashrc
echo 'alias k=kubectl' >>~/.bashrc
echo 'source <(kubectl completion bash | sed 's/kubectl/k/g')' >>~/.bashrc
source ~/.bashrc

# install krew
echo "[Install krew]"
(
  set -x; cd "$(mktemp -d)" &&
  OS="$(uname | tr '[:upper:]' '[:lower:]')" &&
  ARCH="$(uname -m | sed -e 's/x86_64/amd64/' -e 's/\(arm\)\(64\)\?.*/\1\2/' -e 's/aarch64$/arm64/')" &&
  KREW="krew-${OS}_${ARCH}" &&
  curl -fsSLO "https://github.com/kubernetes-sigs/krew/releases/latest/download/${KREW}.tar.gz" &&
  tar zxvf "${KREW}.tar.gz" &&
  ./"${KREW}" install krew
)
echo 'export PATH="${KREW_ROOT:-$HOME/.krew}/bin:$PATH"' >> ~/.bashrc
source ~/.bashrc


# install ctx, ns, konfig
echo "[Install krew plugins (ctx, ns, konfig)]"
kubectl krew install ctx
kubectl krew install ns
kubectl krew install konfig

# add alias
echo 'alias "wk=watch kubectl"' >> ~/.bashrc

echo "[Done]"

echo "\n\nHappy kubectl~!\n\n"