增加自动升级脚本系统服务配置脚本
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# Pika Agent 升级脚本
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## RestartSec 配置升级脚本
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### 背景
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旧版本的 pika-agent 使用 `kardianos/service` 库的默认模板，导致 systemd 服务的 `RestartSec` 被硬编码为 120 秒。新版本通过自定义模板将其改为 5 秒，以实现更快的故障恢复。
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### 一键升级
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**推荐方式：直接通过 curl 执行**
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```bash
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curl -fsSL https://raw.githubusercontent.com/dushixiang/pika/main/scripts/update-restartsec.sh | sudo bash
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```
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### 脚本功能
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1. ✓ 检查是否以 root 权限运行
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2. ✓ 检查服务文件是否存在
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3. ✓ 检查当前 RestartSec 配置（如果已经是 5 秒则跳过）
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4. ✓ 修改 RestartSec 为 5 秒
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5. ✓ 重新加载 systemd 配置
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6. ✓ 自动重启服务并验证状态
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### 验证结果
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```bash
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# 查看服务文件中的 RestartSec 配置
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cat /etc/systemd/system/pika-agent.service | grep RestartSec
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# 应该显示: RestartSec=5
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```
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### 注意事项
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- **脚本会自动重启服务以应用新配置**
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- 重启过程通常只需 2-3 秒，对监控数据影响极小
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- 脚本会自动检测服务重启后的状态，确保服务正常运行
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### 批量升级多台服务器
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如果有多台服务器需要升级：
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```bash
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#!/bin/bash
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SERVERS=(
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"192.168.1.10"
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"192.168.1.11"
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"192.168.1.12"
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)
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for server in "${SERVERS[@]}"; do
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echo "================================"
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echo "升级服务器: $server"
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echo "================================"
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ssh root@$server 'curl -fsSL https://raw.githubusercontent.com/dushixiang/pika/main/scripts/update-restartsec.sh | bash'
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echo ""
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done
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echo "所有服务器升级完成！"
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```
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### 新版本安装
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对于新安装的服务（使用新版本代码重新编译），无需运行此脚本，因为新版本会自动使用正确的配置。
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**此脚本仅用于升级已安装的旧版本服务。**
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Executable
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#!/bin/bash
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# Pika Agent RestartSec 升级脚本
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# 用途: 将 systemd 服务的 RestartSec 从 120 改为 5
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# 使用: curl -fsSL https://raw.githubusercontent.com/dushixiang/pika/main/scripts/update-restartsec.sh | sudo bash
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set -e
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# 颜色输出
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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NC='\033[0m' # No Color
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SERVICE_NAME="pika-agent"
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SERVICE_FILE="/etc/systemd/system/${SERVICE_NAME}.service"
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echo "================================================"
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echo "Pika Agent RestartSec 升级脚本"
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echo "================================================"
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echo ""
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# 检查是否以 root 权限运行
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if [ "$EUID" -ne 0 ]; then
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echo -e "${RED}错误: 请使用 root 权限运行此脚本${NC}"
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echo "使用方法: curl -fsSL https://raw.githubusercontent.com/dushixiang/pika/main/scripts/update-restartsec.sh | sudo bash"
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exit 1
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fi
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# 检查服务文件是否存在
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if [ ! -f "$SERVICE_FILE" ]; then
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echo -e "${RED}错误: 服务文件不存在: $SERVICE_FILE${NC}"
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echo "请先安装 pika-agent 服务"
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exit 1
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fi
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echo -e "${YELLOW}[1/3] 检查当前配置...${NC}"
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# 检查当前的 RestartSec 值
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CURRENT_RESTART_SEC=$(grep -oP '^\s*RestartSec=\K\d+' "$SERVICE_FILE" || echo "")
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if [ -z "$CURRENT_RESTART_SEC" ]; then
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echo -e "${YELLOW}警告: 未找到 RestartSec 配置${NC}"
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else
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echo "当前 RestartSec = $CURRENT_RESTART_SEC 秒"
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fi
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# 如果已经是 5，则无需修改
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if [ "$CURRENT_RESTART_SEC" = "5" ]; then
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echo -e "${GREEN}✓ RestartSec 已经是 5 秒，无需修改${NC}"
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exit 0
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fi
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echo ""
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echo -e "${YELLOW}[2/3] 修改 RestartSec 配置...${NC}"
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# 修改 RestartSec 为 5
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if grep -q "^\s*RestartSec=" "$SERVICE_FILE"; then
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# 如果存在 RestartSec，则替换
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sed -i 's/^\(\s*\)RestartSec=.*/\1RestartSec=5/' "$SERVICE_FILE"
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echo "已将 RestartSec 修改为 5 秒"
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else
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# 如果不存在 RestartSec，则在 Restart=always 后添加
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sed -i '/^\s*Restart=always/a RestartSec=5' "$SERVICE_FILE"
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echo "已添加 RestartSec=5 配置"
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fi
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echo ""
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echo -e "${YELLOW}[3/4] 重新加载 systemd 配置...${NC}"
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# 重新加载 systemd 配置
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systemctl daemon-reload
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echo "systemd 配置已重新加载"
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# 验证修改后的值
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NEW_RESTART_SEC=$(grep -oP '^\s*RestartSec=\K\d+' "$SERVICE_FILE")
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if [ "$NEW_RESTART_SEC" != "5" ]; then
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echo ""
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echo "================================================"
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echo -e "${RED}✗ 配置修改失败${NC}"
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echo "================================================"
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echo ""
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echo "当前 RestartSec = $NEW_RESTART_SEC 秒"
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echo "请检查服务文件: cat $SERVICE_FILE"
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exit 1
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fi
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echo ""
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echo -e "${YELLOW}[4/4] 重启服务以应用新配置...${NC}"
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# 重启服务
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if systemctl restart $SERVICE_NAME; then
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echo "服务已重启"
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# 等待一下，确保服务启动
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sleep 2
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# 检查服务状态
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if systemctl is-active --quiet $SERVICE_NAME; then
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echo -e "${GREEN}✓ 服务运行正常${NC}"
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else
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echo -e "${YELLOW}警告: 服务可能未正常启动，请检查状态${NC}"
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echo "执行: systemctl status $SERVICE_NAME"
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fi
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else
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echo -e "${RED}✗ 服务重启失败${NC}"
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echo "请手动检查: systemctl status $SERVICE_NAME"
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exit 1
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fi
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echo ""
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echo "================================================"
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echo -e "${GREEN}✓ 升级完成！${NC}"
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echo "================================================"
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echo ""
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echo "修改后 RestartSec = $NEW_RESTART_SEC 秒"
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echo "服务已自动重启并应用新配置"
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echo ""
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