#!/bin/bash
# Promtail auf CT600 wp-mirror (pve-mu-3) — wie CT101, Loki via Tailscale
set -euo pipefail
apt-get update && apt-get install -y wget unzip curl systemd-journal-remote 2>/dev/null || apt-get install -y wget unzip curl
cd /tmp
wget -q https://github.com/grafana/loki/releases/download/v3.0.0/promtail-linux-amd64.zip
unzip -o promtail-linux-amd64.zip
chmod +x promtail-linux-amd64
mv promtail-linux-amd64 /usr/local/bin/promtail
cat > /etc/promtail-config.yml << 'EOF'
server:
  http_listen_port: 9080
  grpc_listen_port: 0

positions:
  filename: /tmp/positions.yaml

clients:
  - url: http://100.109.206.43:3100/loki/api/v1/push

scrape_configs:
  - job_name: journal
    journal:
      max_age: 12h
      labels:
        job: systemd
        host: wp-mirror
    relabel_configs:
      - source_labels: [__journal__systemd_unit]
        target_label: unit

  - job_name: system
    static_configs:
      - targets:
          - localhost
        labels:
          job: varlogs
          host: wp-mirror
          __path__: /var/log/*log

  - job_name: docker
    static_configs:
      - targets:
          - localhost
        labels:
          job: dockerlogs
          host: wp-mirror
          __path__: /var/lib/docker/containers/*/*.log
    pipeline_stages:
      - json:
          expressions:
            output: log
            stream: stream
            attrs:
      - json:
          expressions:
            tag:
          source: attrs
      - regex:
          expression: (?P<container_name>(?:[^|]*[^|]))
          source: tag
      - timestamp:
          format: RFC3339Nano
          source: time
      - labels:
          tag:
          stream:
          container_name:
      - output:
          source: output
EOF
cat > /etc/systemd/system/promtail.service << 'EOF'
[Unit]
Description=Promtail Log Agent
After=network-online.target
Wants=network-online.target

[Service]
Type=simple
User=root
ExecStart=/usr/local/bin/promtail -config.file=/etc/promtail-config.yml
Restart=always
RestartSec=10

[Install]
WantedBy=multi-user.target
EOF
systemctl daemon-reload
systemctl enable promtail
systemctl restart promtail
systemctl is-active promtail