Talos upgrade script

talos-upgrade.sh

#!/usr/bin/env bash

set -o nounset  # fail if an unset variable is used
set -o errexit  # fail if a command exits with non-zero
set -o pipefail # fail if a command in a pipe fails

readonly TALOS_VESION=1.7.2
readonly K8S_VERSION=1.30.1
readonly CLUSTERS=( <cluster-1> <cluster-2> ) # <-- ADJUST ME

OS=$(uname -s | tr "[:upper:]" "[:lower:]")

ARCHITECTURE=""
case $(uname -m) in
    x86_64) ARCHITECTURE="amd64" ;;
esac

# Download corresponding talosctl
# TODO: add version check (talosctl version -lt $TALOS_VERSION...)
curl -Lo /usr/local/bin/talosctl \
    https://github.com/siderolabs/talos/releases/download/v$TALOS_VESION/talosctl-$OS-$ARCHITECTURE

chmod +x /usr/local/bin/talosctl

# Upgrade clusters
# TODO: version check talos,k8s vesion
for CLUSTER in "${CLUSTERS[@]}"; do
    echo "--- upgrading Talos on: $CLUSTER ---"
    talosctl upgrade --image ghcr.io/siderolabs/installer:v$TALOS_VESION --wait --preserve --context "$CLUSTER"

    echo
    echo "--- upgrading Kubernetes on: $CLUSTER ---"
    talosctl upgrade-k8s --to $K8S_VERSION --context "$CLUSTER"
done