#!/bin/bash

# Consul 持久化存储配置脚本
# 需要在每个 Nomad 节点上运行

set -e

echo "=== Consul 持久化存储配置 ==="

# 1. 创建数据目录
CONSUL_DATA_DIR="/opt/consul/data"
echo "创建 Consul 数据目录: $CONSUL_DATA_DIR"
sudo mkdir -p $CONSUL_DATA_DIR
sudo chown -R nomad:nomad $CONSUL_DATA_DIR
sudo chmod 755 $CONSUL_DATA_DIR

# 2. 检查 Nomad 客户端配置
NOMAD_CONFIG="/etc/nomad.d/nomad.hcl"
echo "检查 Nomad 配置文件: $NOMAD_CONFIG"

# 3. 添加 host volume 配置
if ! grep -q "consul-data" $NOMAD_CONFIG; then
    echo "添加 consul-data host volume 配置到 Nomad"
    
    # 备份原配置
    sudo cp $NOMAD_CONFIG $NOMAD_CONFIG.backup.$(date +%Y%m%d_%H%M%S)
    
    # 添加 host volume 配置
    sudo tee -a $NOMAD_CONFIG << 'EOF'

# Consul 持久化存储
client {
  host_volume "consul-data" {
    path      = "/opt/consul/data"
    read_only = false
  }
}
EOF
    
    echo "✅ 已添加 consul-data host volume 配置"
else
    echo "✅ consul-data host volume 配置已存在"
fi

# 4. 重启 Nomad 客户端
echo "重启 Nomad 客户端以应用配置..."
sudo systemctl restart nomad
sleep 5

# 5. 验证配置
echo "验证 Nomad 客户端状态..."
sudo systemctl status nomad --no-pager -l

echo ""
echo "=== 配置完成 ==="
echo "数据目录: $CONSUL_DATA_DIR"
echo "权限: $(ls -ld $CONSUL_DATA_DIR)"
echo ""
echo "下一步："
echo "1. 在所有节点 (ch4, ash3c, warden) 运行此脚本"
echo "2. 停止当前 Consul job: nomad job stop consul-cluster-nomad"
echo "3. 部署新的持久化配置: nomad job run consul-cluster-persistent.nomad"