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| #!/bin/bash | |
| # Download recent kubectl CLI versions | |
| set -u | |
| BIN_PATH="$HOME/bin" | |
| RELEASES_URL="https://kubernetes.io/releases/" | |
| OS=$(uname -o | tr -s '[A-Z]' '[a-z]' ) | |
| ARCH=$(uname -m) | |
| WAIT_TIME=120 | |
| CONN_TIME=5 | |
| CURL_CMD="curl -s --connect-timeout $CONN_TIME -m $WAIT_TIME" | |
| mkdir -p "$BIN_PATH" > /dev/null 2>&1 | |
| del_old_bins(){ | |
| local release=$1 | |
| local minor=$( echo $release | cut -d . -f 1,2) | |
| old_bins=$( find . -type f -name 'kubectl-'${minor}'*' | grep -v "$release" ) | |
| if [ -s "$old_bins" ];then | |
| echo "Deprecated: $old_bins" | |
| mv -v $old_bins /tmp/ | |
| fi | |
| } | |
| pushd "$BIN_PATH" | |
| # Check new version | |
| $CURL_CMD -L "$RELEASES_URL" | rg Latest | rg -o '\d\.\d\d\.\d{1,2}' | sort | while read -r release; do | |
| FILE_NAME="${BIN_PATH}/kubectl-${release}" | |
| echo "=> Latest version is v${release}" | |
| if [ -s "$FILE_NAME" ];then | |
| echo OK | |
| del_old_bins $release | |
| continue | |
| fi | |
| # Download | |
| echo "=> Downloading v${release}" | |
| $CURL_CMD -sLo "$FILE_NAME" "https://dl.k8s.io/release/v${release}/bin/${OS}/${ARCH}/kubectl" || continue | |
| # Create links | |
| chmod +x "${BIN_PATH}"/kubectl* | |
| LINK_NAME=$(echo -n $release | cut -d . -f 1,2 ) | |
| ln -f -s "$FILE_NAME" "${BIN_PATH}/kubectl-${LINK_NAME}" | |
| del_old_bins $release | |
| done | |
| popd |
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