61 lines
1.8 KiB
Text
61 lines
1.8 KiB
Text
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#!/usr/bin/env bash
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#MISE description="Ensure kubectl config for k3s-ringtail is set up on this workstation"
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set -euo pipefail
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CONFIG_DIR="$HOME/.kube/k3s-ringtail"
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CONFIG_FILE="$CONFIG_DIR/config.yml"
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echo "Ensuring k3s-ringtail kubectl config..."
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# Create directory if needed
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mkdir -p "$CONFIG_DIR"
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# Fetch kubeconfig from ringtail and extract the CA cert
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echo "Fetching kubeconfig from ringtail..."
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RAW_CONFIG=$(ssh ringtail 'sudo cat /etc/rancher/k3s/k3s.yaml')
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# Extract and decode the CA certificate
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echo "$RAW_CONFIG" | grep certificate-authority-data | awk '{print $2}' | base64 -d > "$CONFIG_DIR/ca.crt"
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# Extract and decode the client certificate
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echo "$RAW_CONFIG" | grep client-certificate-data | awk '{print $2}' | base64 -d > "$CONFIG_DIR/client.crt"
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# Extract and decode the client key
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echo "$RAW_CONFIG" | grep client-key-data | awk '{print $2}' | base64 -d > "$CONFIG_DIR/client.key"
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chmod 600 "$CONFIG_DIR/client.key"
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# Write kubeconfig with file-based certs and tailscale hostname
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cat > "$CONFIG_FILE" << EOF
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apiVersion: v1
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kind: Config
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clusters:
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- cluster:
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certificate-authority: $CONFIG_DIR/ca.crt
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server: https://ringtail.tail8d86e.ts.net:6443
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name: k3s-ringtail
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contexts:
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- context:
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cluster: k3s-ringtail
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user: k3s-ringtail
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name: k3s-ringtail
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current-context: k3s-ringtail
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users:
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- name: k3s-ringtail
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user:
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client-certificate: $CONFIG_DIR/client.crt
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client-key: $CONFIG_DIR/client.key
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EOF
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echo "Config written to $CONFIG_FILE"
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# Warn if KUBECONFIG doesn't include this file
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if [[ -z "${KUBECONFIG:-}" ]] || [[ ":$KUBECONFIG:" != *":$CONFIG_FILE:"* ]]; then
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echo ""
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echo "WARNING: KUBECONFIG does not include $CONFIG_FILE"
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echo "Add this to your shell config:"
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echo " export KUBECONFIG=\"\$KUBECONFIG:$CONFIG_FILE\""
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fi
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echo ""
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echo "Test with: kubectl --context=k3s-ringtail get nodes"
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