Install Kubernetes tools

1. Install eksctl:

   # for ARM systems, set ARCH to: `arm64`, `armv6` or `armv7`
   ARCH=amd64
   PLATFORM=$(uname -s)_$ARCH
   
   curl -sLO "https://github.com/eksctl-io/eksctl/releases/latest/download/eksctl_$PLATFORM.tar.gz"
   
   # (Optional) Verify checksum
   curl -sL "https://github.com/eksctl-io/eksctl/releases/latest/download/eksctl_checksums.txt" | grep $PLATFORM | sha256sum --check
   
   tar -xzf eksctl_$PLATFORM.tar.gz -C /tmp && rm eksctl_$PLATFORM.tar.gz
   
   sudo mv /tmp/eksctl /usr/local/bin
   

2. Install kubectl:

   curl -O https://s3.us-west-2.amazonaws.com/amazon-eks/1.30.0/2024-05-12/bin/linux/amd64/kubectl
   chmod +x ./kubectl
   mkdir -p $HOME/bin && cp ./kubectl $HOME/bin/kubectl && export PATH=$HOME/bin:$PATH
   

3. Install yq:

   echo 'yq() {
     docker run --rm -i -v "${PWD}":/workdir mikefarah/yq "$@"
   }' | tee -a ~/.bashrc && source ~/.bashrc
   

4. Install Helm:

   curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3
   chmod 700 get_helm.sh
   ./get_helm.sh
   

5. Install envsubst:

   curl -L https://github.com/a8m/envsubst/releases/download/v1.2.0/envsubst-`uname -s`-`uname -m` -o envsubst
   chmod +x envsubst
   sudo mv envsubst /usr/local/bin