Files
launchpad/.tofu/scripts/get-kubeconfig.sh
T
2026-06-12 17:17:51 +02:00

110 lines
3.4 KiB
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#!/bin/bash
set -euo pipefail
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
TOFU_ROOT="$(dirname "$SCRIPT_DIR")"
PROJECT_ROOT="$(dirname "$TOFU_ROOT")"
usage() {
cat <<EOF
Usage: $0 <cluster> --envtype <dev|prod|workload>
Fetch (or reuse) a kubeconfig for the given cluster.
Platform is read from the cluster prefix (<platform>-...).
Env type must be supplied explicitly — it is no longer inferred
from the cluster name, so names like 'upc-forte-group' work.
Examples:
$0 aks-dev --envtype dev
$0 upc-forte-group --envtype prod
$0 eks-workload --envtype workload
EOF
exit "${1:-0}"
}
CLUSTER=""
ENVTYPE=""
while [[ $# -gt 0 ]]; do
case "$1" in
--envtype) ENVTYPE="${2:-}"; shift 2 ;;
--envtype=*) ENVTYPE="${1#*=}"; shift ;;
-h|--help) usage 0 ;;
-*) echo "Unknown option: $1"; usage 1 ;;
*)
if [[ -z "$CLUSTER" ]]; then
CLUSTER="$1"; shift
else
echo "Error: unexpected argument '$1'"; usage 1
fi
;;
esac
done
[[ -z "$CLUSTER" ]] && { echo "Error: <cluster> argument required"; usage 1; }
[[ -z "$ENVTYPE" ]] && { echo "Error: --envtype <dev|prod|workload> required"; usage 1; }
case "$ENVTYPE" in
dev|prod|workload) ;;
*) echo "Error: invalid --envtype '$ENVTYPE'. Expected: dev, prod, workload"; exit 1 ;;
esac
PLATFORM="${CLUSTER%%-*}"
ENV="$ENVTYPE"
case "$PLATFORM" in
aks|eks|gke|upc) ;;
*) echo "Error: unknown platform '$PLATFORM'. Expected: aks, eks, gke, upc"; exit 1 ;;
esac
KUBECONFIG_FILE="$PROJECT_ROOT/private/$CLUSTER/kubeconfig"
if [[ -f "$KUBECONFIG_FILE" ]]; then
echo "Kubeconfig already exists: $KUBECONFIG_FILE"
echo ""
echo " export KUBECONFIG=$KUBECONFIG_FILE"
else
echo "No cached kubeconfig. Fetching from platform..."
# Load platform credentials
ENV_FILE="$TOFU_ROOT/configs/$PLATFORM.env"
if [[ -f "$ENV_FILE" ]]; then
set -a; source "$ENV_FILE"; set +a
fi
TOFU_DIR="$TOFU_ROOT/platforms/$PLATFORM/$ENV"
mkdir -p "$(dirname "$KUBECONFIG_FILE")"
case "$PLATFORM" in
aks)
cd "$TOFU_DIR"
RG=$(tofu output -raw resource_group_name 2>/dev/null || echo "$CLUSTER-rg")
NAME=$(tofu output -raw cluster_name 2>/dev/null || echo "$CLUSTER")
az aks get-credentials --resource-group "$RG" --name "$NAME" --file "$KUBECONFIG_FILE" --overwrite-existing
;;
eks)
cd "$TOFU_DIR"
NAME=$(tofu output -raw cluster_name 2>/dev/null || echo "$CLUSTER")
REGION=$(tofu output -raw aws_region 2>/dev/null || echo "${AWS_REGION:-eu-west-1}")
aws eks update-kubeconfig --name "$NAME" --region "$REGION" --kubeconfig "$KUBECONFIG_FILE"
;;
gke)
cd "$TOFU_DIR"
NAME=$(tofu output -raw cluster_name 2>/dev/null || echo "$CLUSTER")
REGION=$(tofu output -raw region 2>/dev/null || echo "${GCP_REGION:-europe-west4}")
PROJECT=$(tofu output -raw project_id 2>/dev/null || echo "${GCP_PROJECT_ID:-}")
gcloud container clusters get-credentials "$NAME" --region "$REGION" --project "$PROJECT"
cp ~/.kube/config "$KUBECONFIG_FILE"
;;
upc)
cd "$TOFU_DIR"
CLUSTER_ID=$(tofu output -raw cluster_id 2>/dev/null || echo "${UPCLOUD_CLUSTER_ID:-}")
upctl kubernetes config "$CLUSTER_ID" > "$KUBECONFIG_FILE"
;;
esac
chmod 600 "$KUBECONFIG_FILE"
echo "Kubeconfig saved: $KUBECONFIG_FILE"
echo ""
echo " export KUBECONFIG=$KUBECONFIG_FILE"
fi