Logan.Li
59320aa410
CPU 根因：每个 Agent 请求都做一次 bcrypt 校验（实测 72ms）， 30 台主机 18 req/s × 72ms ≈ 1.35 核，实测容器 CPU 135%。 - agentauth: 校验结果按 Token 哈希缓存（TTL 5min，轮换即失效）， last_used_at 写入按 60s 节流。实测 CPU 135% → 1.6%，请求延迟 103ms → 1.6ms - metricagg: 新增后台逐级降采样聚合 raw→1m/5m→1h→6h/1d，取代前端手动触发 - metrics_aggregate: 补 uniq_metric_agg 唯一索引（原 idx_agg 非唯一导致 upsert 插重复行） - agent 合并配置接口 GET /agent/config：一次返回任务+探针+端口策略+频率， 配置轮询 5s→30s；服务端可下发 report_interval，Agent 热更新 ticker 无需重装 - retention: agent_reports 保留期 7d→1d（趋势由聚合表承担） - redis: 增加 maxmemory 512mb + volatile-lru - fix(upgrade): 升级脚本改为 fail-fast，修复下载失败仍报 UPGRADE_OK 的静默谎报 // Logan.Li
612 lines
17 KiB
Go
612 lines
17 KiB
Go
// Package main 是 AIOps Agent 的入口。
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// Agent 定时采集 CPU、内存、磁盘、端口、进程 TOP、Swap、FD、上下文切换等指标，
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// 并通过 HTTP 上报至 AIOps 后端。
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// v2.1: 共享 HTTP client + 独立探针拉取 + 配置结构体
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//
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// 用法:
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//
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// ./aiops-agent output # 打印全部待上报指标（Zabbix 风格 key [type|value]）
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// ./aiops-agent discover # 端口发现（Zabbix LLD JSON）
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// ./aiops-agent -server URL -token T # 正常采集上报模式
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//
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// 署名 Logan.Li
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package main
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import (
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"context"
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"encoding/json"
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"flag"
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"fmt"
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"log"
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"math/rand"
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"net"
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"os"
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"os/signal"
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"runtime"
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"strconv"
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"syscall"
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"time"
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agentclient "ezops/agent/client"
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"ezops/agent/collector"
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"ezops/agent/model"
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"ezops/agent/reporter"
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"ezops/agent/task"
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)
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var (
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version = "v2.2.0"
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buildTime = "unknown"
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)
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// Config Agent 运行配置
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type Config struct {
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Server string
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Token string
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Hostname string
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Interval int
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TopN int
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}
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func main() {
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serverFlag := flag.String("server", "", "AIOps 后端上报地址（output/discover 模式不需要）")
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tokenFlag := flag.String("token", "", "Bearer 鉴权令牌")
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hostnameFlag := flag.String("hostname", "", "上报主机名，默认使用系统主机名")
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intervalFlag := flag.Int("interval", 10, "采集与上报间隔，单位：秒")
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topNFlag := flag.Int("top-n", 3, "进程 TOP N 数量")
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flag.Parse()
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cfg := Config{
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Server: *serverFlag,
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Token: *tokenFlag,
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Hostname: *hostnameFlag,
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Interval: *intervalFlag,
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TopN: *topNFlag,
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}
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if cfg.Hostname == "" {
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if h, err := os.Hostname(); err == nil {
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cfg.Hostname = h
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} else {
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cfg.Hostname = "unknown"
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}
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}
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// 子命令：第一个非 flag 参数
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cmd := "run"
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if flag.NArg() > 0 {
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cmd = flag.Arg(0)
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}
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switch cmd {
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case "version", "v", "-v", "--version":
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fmt.Printf("AIOps Agent %s (built %s) go=%s\n", version, buildTime, runtime.Version())
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return
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case "output":
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runOutput(cfg)
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return
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}
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// ── 正常采集上报模式 ──
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logger := log.New(os.Stderr, "[aiops-agent] ", log.LstdFlags|log.Lmicroseconds)
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if cfg.Server == "" {
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logger.Fatal("参数 -server 不能为空（调试请用: ./aiops-agent output）")
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}
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if cfg.Interval < 5 {
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logger.Fatalf("参数 -interval 必须 >= 5，当前为 %d（1000 台规模推荐 30~60s）", cfg.Interval)
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}
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logger.Printf("AIOps Agent %s (built %s) go=%s", version, buildTime, runtime.Version())
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logger.Printf("配置: server=%s interval=%ds top-n=%d hostname=%q", cfg.Server, cfg.Interval, cfg.TopN, cfg.Hostname)
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httpCli := agentclient.New(cfg.Server, cfg.Token, logger)
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cpuCollector := collector.NewCPUCollector()
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memCollector := collector.NewMemCollector()
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diskCollector := collector.NewDiskCollector()
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portCollector := collector.NewPortCollector()
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netCollector := collector.NewNetworkCollector()
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diskIOCollector := collector.NewDiskIOCollector()
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procTopCollector := collector.NewProcessTopCollector()
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swapCollector := collector.NewSwapCollector()
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healthProbeCollector := collector.NewHealthProbeCollector()
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fdCollector := collector.NewFDCollector()
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csCollector := collector.NewContextSwitchCollector()
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rep := reporter.New(httpCli, logger)
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sysInfo := collector.CollectSystem()
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logger.Printf("系统信息: OS=%q Kernel=%q", sysInfo.OSVersion, sysInfo.Kernel)
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agentStartedAt := time.Now()
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localIP := detectLocalIP()
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logger.Printf("探测本机 IP: %s", localIP)
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taskExecutor := task.New(logger)
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taskClient := task.NewClient(httpCli, cfg.Hostname, logger)
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startupJitter := time.Duration(rand.Intn(cfg.Interval)) * time.Second
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logger.Printf("启动 Jitter: %v（防止惊群效应）", startupJitter)
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ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
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defer stop()
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var reportSeq uint64
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var probeConfigs []model.ProbeConfig
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collectAndReport := func() {
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currentUptime := sysInfo.UptimeSeconds + int64(time.Since(agentStartedAt).Seconds())
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report := &model.Report{
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Hostname: cfg.Hostname,
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IP: localIP,
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Timestamp: time.Now().UTC().Format(time.RFC3339),
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AgentVersion: version,
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System: &model.SystemStat{
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OSVersion: sysInfo.OSVersion,
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Kernel: sysInfo.Kernel,
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Uptime: currentUptime,
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},
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}
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if stat, err := cpuCollector.Collect(); err != nil {
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logger.Printf("CPU 采集异常: %v", err)
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} else {
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report.CPU = stat
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}
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if stat, err := memCollector.Collect(); err != nil {
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logger.Printf("内存采集异常: %v", err)
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} else {
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report.Memory = stat
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}
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if swap, err := swapCollector.Collect(); err != nil {
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logger.Printf("Swap 采集异常: %v", err)
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} else if swap != nil {
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report.Swap = swap
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}
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if disks, err := diskCollector.Collect(); err != nil {
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logger.Printf("磁盘采集异常: %v", err)
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} else {
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report.Disks = disks
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}
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if ports, err := portCollector.Collect(); err != nil {
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logger.Printf("端口采集异常: %v", err)
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} else {
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report.Ports = ports
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}
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if netStat, err := netCollector.Collect(); err != nil {
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logger.Printf("网络采集异常: %v", err)
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} else {
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report.Network = netStat
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}
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if dioStat, err := diskIOCollector.Collect(); err != nil {
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logger.Printf("磁盘IO采集异常: %v", err)
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} else {
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report.DiskIO = dioStat
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}
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if procs, err := procTopCollector.Collect(cfg.TopN); err != nil {
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logger.Printf("进程TOP采集异常: %v", err)
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} else {
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report.ProcessTop = procs
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}
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if fdStat, err := fdCollector.Collect(); err != nil {
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logger.Printf("FD采集异常: %v", err)
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} else {
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report.FD = fdStat
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}
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if csStat, err := csCollector.Collect(); err != nil {
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// 静默跳过
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} else {
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report.ContextSwitches = csStat
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}
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if len(probeConfigs) > 0 {
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report.ProbeResults = healthProbeCollector.Execute(ctx, probeConfigs)
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}
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reportSeq++
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var memStats runtime.MemStats
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runtime.ReadMemStats(&memStats)
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report.Heartbeat = model.AgentHeartbeat{
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Version: version,
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UptimeSec: currentUptime,
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SelfCPU: 0,
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SelfRSSMB: float64(memStats.Alloc) / 1024.0 / 1024.0,
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ReportSeq: reportSeq,
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}
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if err := rep.Send(ctx, report); err != nil {
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logger.Printf("上报失败: %v", err)
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return
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}
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probeCount := len(report.ProbeResults)
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logger.Printf("上报成功: cpu=%.1f%% mem=%.1f%% disks=%d ports=%d procs=%d fd=%d/%d probes=%d",
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report.CPU.UsagePercent,
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report.Memory.UsagePercent,
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len(report.Disks), len(report.Ports), len(report.ProcessTop),
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func() int {
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if report.FD != nil {
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return report.FD.Allocated
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}
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return 0
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}(),
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func() int64 {
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if report.FD != nil {
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return report.FD.Max
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}
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return 0
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}(),
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probeCount,
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)
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}
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pollAndExecute := func() {
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tasks, err := taskClient.Poll(ctx)
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if err != nil {
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if ctx.Err() != nil {
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return
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}
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logger.Printf("任务轮询失败: %v", err)
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return
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}
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if len(tasks) > 0 {
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logger.Printf("拉取到 %d 个待执行任务", len(tasks))
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for _, t := range tasks {
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if ctx.Err() != nil {
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return
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}
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result := taskExecutor.ExecuteTask(ctx, t)
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if err := taskClient.Submit(ctx, result); err != nil {
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logger.Printf("任务 %s 结果回传失败: %v", t.TaskID, err)
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} else {
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logger.Printf("任务 %s 结果回传成功 status=%s", t.TaskID, result.Status)
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}
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}
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}
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}
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pullProbes := func() {
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configs, err := taskClient.PollProbes(ctx)
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if err != nil {
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if ctx.Err() != nil {
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return
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}
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logger.Printf("探针配置拉取失败: %v", err)
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return
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}
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if len(configs) > 0 {
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probeConfigs = configs
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}
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}
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pullPortPolicy := func() {
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policy, err := taskClient.PollPortPolicy(ctx)
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if err != nil {
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if ctx.Err() != nil {
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return
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}
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// 静默忽略 — 端口策略为可选配置
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return
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}
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if policy != nil {
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portCollector.SetPolicy(policy)
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}
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}
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// ── 配置轮询 + 上报循环（v2.2）────────────────────────────────
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//
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// 旧版每 5 秒分别拉取 tasks/poll、health-probes/config、port-policy 三个接口，
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// 配置类请求量是上报本身的 6 倍；现改为单次 GET /agent/config，
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// 并由服务端下发 report_interval，Agent 热更新 ticker、无需重装。 // Logan.Li
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const minInterval = 5 * time.Second
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const fallbackConfigPollInterval = 30 * time.Second
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intervalUpdates := make(chan time.Duration, 1)
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configTicker := time.NewTicker(fallbackConfigPollInterval)
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go func() {
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defer configTicker.Stop()
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runConfig := func() {
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merged, err := taskClient.PollConfig(ctx)
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if err != nil {
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if ctx.Err() != nil {
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return
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}
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// 服务端尚未升级（或暂时失败）时回退旧的分接口模式，保证兼容。 // Logan.Li
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pollAndExecute()
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pullProbes()
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pullPortPolicy()
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return
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}
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// 执行服务端下发的任务。 // Logan.Li
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for _, t := range merged.Tasks {
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if ctx.Err() != nil {
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return
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}
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result := taskExecutor.ExecuteTask(ctx, t)
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if err := taskClient.Submit(ctx, result); err != nil {
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logger.Printf("任务 %s 结果回传失败: %v", t.TaskID, err)
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}
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}
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if len(merged.HealthProbes) > 0 {
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probeConfigs = merged.HealthProbes
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}
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if merged.PortPolicy != nil {
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portCollector.SetPolicy(merged.PortPolicy)
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}
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// 服务端下发的上报间隔 → 通知主循环热更新 ticker。 // Logan.Li
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if merged.ReportInterval > 0 {
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next := time.Duration(merged.ReportInterval) * time.Second
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if next < minInterval {
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next = minInterval
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}
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select {
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case intervalUpdates <- next:
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default:
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}
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}
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// 服务端下发的配置轮询间隔 → 调整本循环节奏。 // Logan.Li
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if merged.ConfigPollInterval > 0 {
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next := time.Duration(merged.ConfigPollInterval) * time.Second
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if next >= minInterval && next != fallbackConfigPollInterval {
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configTicker.Reset(next)
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}
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}
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}
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runConfig()
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for {
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select {
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case <-configTicker.C:
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runConfig()
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case <-ctx.Done():
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return
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}
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}
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}()
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// 上报循环：间隔可被服务端热更新。 // Logan.Li
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time.Sleep(startupJitter)
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collectAndReport()
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reportTicker := time.NewTicker(time.Duration(cfg.Interval) * time.Second)
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defer reportTicker.Stop()
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for {
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select {
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case <-reportTicker.C:
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collectAndReport()
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case next := <-intervalUpdates:
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// 重新抖动，避免多台主机在服务端下发同值后被对齐成同一时刻上报。 // Logan.Li
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reportTicker.Reset(next)
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logger.Printf("服务端下发新的上报间隔: %s", next)
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case <-ctx.Done():
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logger.Println("收到退出信号，Agent 正常关闭")
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return
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}
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}
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}
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// ── runOutput: 构建与 daemon 模式完全一致的 Report，Zabbix-agent -p 风格输出 ──
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func runOutput(cfg Config) {
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cpu := collector.NewCPUCollector()
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mem := collector.NewMemCollector()
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disk := collector.NewDiskCollector()
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port := collector.NewPortCollector()
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netc := collector.NewNetworkCollector()
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dio := collector.NewDiskIOCollector()
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ptop := collector.NewProcessTopCollector()
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swap := collector.NewSwapCollector()
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fd := collector.NewFDCollector()
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cs := collector.NewContextSwitchCollector()
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sysInfo := collector.CollectSystem()
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localIP := detectLocalIP()
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// 构建与 daemon collectAndReport 完全一致的 Report
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report := &model.Report{
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Hostname: cfg.Hostname,
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IP: localIP,
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Timestamp: time.Now().UTC().Format(time.RFC3339),
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AgentVersion: version,
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System: &model.SystemStat{
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OSVersion: sysInfo.OSVersion,
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Kernel: sysInfo.Kernel,
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Uptime: sysInfo.UptimeSeconds,
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},
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}
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if stat, err := cpu.Collect(); err == nil {
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report.CPU = stat
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}
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if stat, err := mem.Collect(); err == nil {
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report.Memory = stat
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}
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if stat, err := swap.Collect(); err == nil && stat != nil {
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report.Swap = stat
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}
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if disks, err := disk.Collect(); err == nil {
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report.Disks = disks
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}
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if ports, err := port.Collect(); err == nil {
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report.Ports = ports
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}
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if netStat, err := netc.Collect(); err == nil {
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report.Network = netStat
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}
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if dioStat, err := dio.Collect(); err == nil {
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report.DiskIO = dioStat
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}
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if procs, err := ptop.Collect(cfg.TopN); err == nil {
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report.ProcessTop = procs
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}
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if fdStat, err := fd.Collect(); err == nil {
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report.FD = fdStat
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}
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if csStat, err := cs.Collect(); err == nil {
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report.ContextSwitches = csStat
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}
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var memStats runtime.MemStats
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runtime.ReadMemStats(&memStats)
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report.Heartbeat = model.AgentHeartbeat{
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Version: version,
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UptimeSec: sysInfo.UptimeSeconds,
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SelfCPU: 0,
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SelfRSSMB: float64(memStats.Alloc) / 1024.0 / 1024.0,
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ReportSeq: 1,
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}
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// ── Zabbix 风格打印 ──
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p := func(key, typ, val string) { fmt.Printf("%-48s [%s|%s]\n", key, typ, val) }
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ps := func(key, val string) { p(key, "s", val) }
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pd := func(key string, val float64) { p(key, "d", fmt.Sprintf("%.4f", val)) }
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pu := func(key string, val int) { p(key, "u", strconv.Itoa(val)) }
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pu64 := func(key string, val int64) { p(key, "u", strconv.FormatInt(val, 10)) }
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// Agent 身份
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ps("agent.hostname", report.Hostname)
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ps("system.hostname", report.Hostname)
|
||
ps("agent.version", report.AgentVersion)
|
||
ps("agent.ip", report.IP)
|
||
|
||
// 系统
|
||
if report.System != nil {
|
||
ps("system.os", report.System.OSVersion)
|
||
ps("system.kernel", report.System.Kernel)
|
||
pu64("system.uptime", report.System.Uptime)
|
||
}
|
||
|
||
// CPU
|
||
pd("cpu.usage_percent", report.CPU.UsagePercent)
|
||
pd("cpu.iowait", report.CPU.IOWait)
|
||
pu("cpu.core_count", report.CPU.CoreCount)
|
||
pd("cpu.load1", report.CPU.Load1)
|
||
pd("cpu.load5", report.CPU.Load5)
|
||
pd("cpu.load15", report.CPU.Load15)
|
||
|
||
// 内存
|
||
pd("memory.total_gb", report.Memory.TotalGB)
|
||
pd("memory.used_gb", report.Memory.UsedGB)
|
||
pd("memory.cached_gb", report.Memory.CachedGB)
|
||
pd("memory.available_gb", report.Memory.AvailableGB)
|
||
pd("memory.swap_used_gb", report.Memory.SwapUsedGB)
|
||
pd("memory.usage_percent", report.Memory.UsagePercent)
|
||
|
||
// Swap
|
||
if report.Swap != nil {
|
||
pd("swap.total_gb", report.Swap.TotalGB)
|
||
pd("swap.used_gb", report.Swap.UsedGB)
|
||
pd("swap.usage_percent", report.Swap.UsagePercent)
|
||
}
|
||
|
||
// 磁盘
|
||
for _, d := range report.Disks {
|
||
prefix := "disk[" + d.Mount + "]"
|
||
pd(prefix+".total_gb", d.TotalGB)
|
||
pd(prefix+".used_gb", d.UsedGB)
|
||
pd(prefix+".usage_percent", d.UsagePercent)
|
||
pd(prefix+".inode_usage_pct", d.InodeUsagePct)
|
||
}
|
||
|
||
// 端口 (监听)
|
||
for _, pt := range report.Ports {
|
||
ps("net.listen["+strconv.Itoa(pt.Port)+"].process", pt.Process)
|
||
ps("net.listen["+strconv.Itoa(pt.Port)+"].protocol", pt.Protocol)
|
||
}
|
||
pu("net.listen.count", len(report.Ports))
|
||
|
||
// 端口发现 Zabbix LLD JSON（合并为一行）
|
||
if len(report.Ports) > 0 {
|
||
type lldItem struct {
|
||
PName string `json:"{#PNAME}"`
|
||
PPort string `json:"{#PPORT}"`
|
||
}
|
||
items := make([]lldItem, 0, len(report.Ports))
|
||
for _, pt := range report.Ports {
|
||
items = append(items, lldItem{PName: pt.Process, PPort: strconv.Itoa(pt.Port)})
|
||
}
|
||
if jsonBytes, err := json.Marshal(map[string]interface{}{"data": items}); err == nil {
|
||
ps("ports.discovery[*]", string(jsonBytes))
|
||
}
|
||
}
|
||
|
||
// 网络 TCP
|
||
pu("net.tcp.established", report.Network.TCPEstablished)
|
||
pu("net.tcp.time_wait", report.Network.TCPTimeWait)
|
||
pu("net.tcp.close_wait", report.Network.TCPCloseWait)
|
||
pu("net.tcp.total", report.Network.TCPTotal)
|
||
pu("net.connection.total", report.Network.TCPEstablished+report.Network.TCPTimeWait+report.Network.TCPCloseWait)
|
||
pd("net.rx_bps", report.Network.NetRxBPS)
|
||
pd("net.tx_bps", report.Network.NetTxBPS)
|
||
pu64("net.rx_errors", report.Network.NetRxErrors)
|
||
pu64("net.tx_errors", report.Network.NetTxErrors)
|
||
|
||
// 磁盘 IO
|
||
pd("disk_io.read_bps", report.DiskIO.ReadBPS)
|
||
pd("disk_io.write_bps", report.DiskIO.WriteBPS)
|
||
pd("disk_io.read_iops", report.DiskIO.ReadIOPS)
|
||
pd("disk_io.write_iops", report.DiskIO.WriteIOPS)
|
||
pd("disk_io.util", report.DiskIO.Util)
|
||
|
||
// 进程 TOP
|
||
for i, pr := range report.ProcessTop {
|
||
prefix := fmt.Sprintf("proc.top[%d]", i+1)
|
||
ps(prefix+".name", pr.Name)
|
||
if pr.Cmdline != "" {
|
||
ps(prefix+".cmdline", pr.Cmdline)
|
||
}
|
||
pu(prefix+".pid", pr.PID)
|
||
ps(prefix+".user", pr.User)
|
||
pd(prefix+".cpu_pct", pr.CPUPct)
|
||
pd(prefix+".mem_pct", pr.MemPct)
|
||
pd(prefix+".memory_mb", pr.MemoryMB)
|
||
pu(prefix+".fd_count", pr.FDCount)
|
||
pu(prefix+".threads", pr.Threads)
|
||
}
|
||
|
||
// FD
|
||
if report.FD != nil {
|
||
pu("fd.allocated", report.FD.Allocated)
|
||
pu64("fd.max", report.FD.Max)
|
||
pd("fd.usage_pct", report.FD.UsagePct)
|
||
}
|
||
|
||
// 上下文切换
|
||
if report.ContextSwitches != nil {
|
||
pd("ctx.ctx_per_sec", report.ContextSwitches.CTXPerSec)
|
||
pd("ctx.irq_per_sec", report.ContextSwitches.IRQPerSec)
|
||
}
|
||
|
||
// Heartbeat（Agent 自检）
|
||
ps("agent.heartbeat.version", report.Heartbeat.Version)
|
||
pu64("agent.heartbeat.uptime_sec", report.Heartbeat.UptimeSec)
|
||
pd("agent.heartbeat.self_rss_mb", report.Heartbeat.SelfRSSMB)
|
||
pu64("agent.heartbeat.report_seq", int64(report.Heartbeat.ReportSeq))
|
||
}
|
||
|
||
// detectLocalIP 探测本机主 IP
|
||
func detectLocalIP() string {
|
||
conn, err := net.Dial("udp", "8.8.8.8:53")
|
||
if err == nil {
|
||
defer conn.Close()
|
||
if addr, ok := conn.LocalAddr().(*net.UDPAddr); ok && addr.IP != nil {
|
||
return addr.IP.String()
|
||
}
|
||
}
|
||
ifaces, err := net.Interfaces()
|
||
if err == nil {
|
||
for _, iface := range ifaces {
|
||
if iface.Flags&net.FlagLoopback != 0 || iface.Flags&net.FlagUp == 0 {
|
||
continue
|
||
}
|
||
addrs, _ := iface.Addrs()
|
||
for _, addr := range addrs {
|
||
if ipnet, ok := addr.(*net.IPNet); ok && ipnet.IP.To4() != nil {
|
||
return ipnet.IP.String()
|
||
}
|
||
}
|
||
}
|
||
}
|
||
return "unknown"
|
||
}
|