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Hyoseong Jo
2025-12-28 14:06:32 +09:00
parent 7d30d2b5a9
commit 9d2a6638b5
6 changed files with 158 additions and 276 deletions
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94
backend/api/anomaly/baseline.get.ts
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@@ -1,15 +1,14 @@
import { getDb } from '../../utils/db'
import { query } from '../../utils/db'
export default defineEventHandler(async (event) => {
const db = getDb()
const DEVIATION_THRESHOLD = 2.0
const servers = db.prepare(`
SELECT target_id, server_name
const servers = await query<any>(`
SELECT target_id, name as server_name
FROM server_targets
WHERE is_active = 1
ORDER BY server_name
`).all() as any[]
ORDER BY name
`)
const now = new Date()
const currentHour = now.getHours()
@@ -20,41 +19,32 @@ export default defineEventHandler(async (event) => {
const anomalies: any[] = []
const serverResults: any[] = []
// 로그 저장용
const insertLog = db.prepare(`
INSERT INTO anomaly_logs (target_id, server_name, detect_type, metric, level, current_value, threshold_value, message)
VALUES (?, ?, 'baseline', ?, ?, ?, ?, ?)
`)
const recentLogExists = db.prepare(`
SELECT 1 FROM anomaly_logs
WHERE target_id = ? AND detect_type = 'baseline' AND metric = ?
AND detected_at > datetime('now', '-1 minute', 'localtime')
LIMIT 1
`)
for (const server of servers) {
const historicalData = db.prepare(`
SELECT cpu_percent, memory_percent, collected_at
FROM server_snapshots
WHERE target_id = ?
AND collected_at >= datetime('now', '-14 days', 'localtime')
AND strftime('%H', collected_at) = ?
// 최근 14일 동일 시간대 데이터
const historicalData = await query<any>(`
SELECT cpu_usage as cpu_percent, memory_usage as memory_percent, checked_at as collected_at
FROM server_logs
WHERE target_id = $1
AND checked_at >= NOW() - INTERVAL '14 days'
AND EXTRACT(HOUR FROM checked_at) = $2
AND (
(? = 'weekend' AND strftime('%w', collected_at) IN ('0', '6'))
($3 = 'weekend' AND EXTRACT(DOW FROM checked_at) IN (0, 6))
OR
(? = 'weekday' AND strftime('%w', collected_at) NOT IN ('0', '6'))
($3 = 'weekday' AND EXTRACT(DOW FROM checked_at) NOT IN (0, 6))
)
ORDER BY collected_at DESC
`).all(server.target_id, currentHour.toString().padStart(2, '0'), dayType, dayType) as any[]
ORDER BY checked_at DESC
`, [server.target_id, currentHour, dayType])
const current = db.prepare(`
SELECT cpu_percent, memory_percent
FROM server_snapshots
WHERE target_id = ?
ORDER BY collected_at DESC
// 현재 값
const currentRows = await query<any>(`
SELECT cpu_usage as cpu_percent, memory_usage as memory_percent
FROM server_logs
WHERE target_id = $1
ORDER BY checked_at DESC
LIMIT 1
`).get(server.target_id) as any
`, [server.target_id])
const current = currentRows[0]
if (!current || historicalData.length < 5) {
serverResults.push({
@@ -74,17 +64,17 @@ export default defineEventHandler(async (event) => {
continue
}
const currCpu = current.cpu_percent ?? 0
const currMem = current.memory_percent ?? 0
const currCpu = Number(current.cpu_percent) || 0
const currMem = Number(current.memory_percent) || 0
const cpuValues = historicalData.map(s => s.cpu_percent ?? 0)
const memValues = historicalData.map(s => s.memory_percent ?? 0)
const cpuValues = historicalData.map((s: any) => Number(s.cpu_percent) || 0)
const memValues = historicalData.map((s: any) => Number(s.memory_percent) || 0)
const cpuAvg = cpuValues.reduce((a, b) => a + b, 0) / cpuValues.length
const memAvg = memValues.reduce((a, b) => a + b, 0) / memValues.length
const cpuAvg = cpuValues.reduce((a: number, b: number) => a + b, 0) / cpuValues.length
const memAvg = memValues.reduce((a: number, b: number) => a + b, 0) / memValues.length
const cpuVariance = cpuValues.reduce((sum, val) => sum + Math.pow(val - cpuAvg, 2), 0) / cpuValues.length
const memVariance = memValues.reduce((sum, val) => sum + Math.pow(val - memAvg, 2), 0) / memValues.length
const cpuVariance = cpuValues.reduce((sum: number, val: number) => sum + Math.pow(val - cpuAvg, 2), 0) / cpuValues.length
const memVariance = memValues.reduce((sum: number, val: number) => sum + Math.pow(val - memAvg, 2), 0) / memValues.length
const cpuStd = Math.sqrt(cpuVariance)
const memStd = Math.sqrt(memVariance)
@@ -111,12 +101,9 @@ export default defineEventHandler(async (event) => {
status
})
// CPU 이상감지 + 로그 저장
// CPU 이상감지
if (Math.abs(cpuDeviation) >= DEVIATION_THRESHOLD) {
const level = Math.abs(cpuDeviation) >= 3.0 ? 'danger' : 'warning'
const direction = cpuDeviation >= 0 ? '높음' : '낮음'
const dayLabel = isWeekend ? '주말' : '평일'
const message = `CPU ${dayLabel} ${currentHour}시 베이스라인 대비 ${Math.abs(cpuDeviation).toFixed(1)}σ ${direction} (기준: ${cpuAvg.toFixed(1)}%, 현재: ${currCpu.toFixed(1)}%)`
anomalies.push({
target_id: server.target_id,
@@ -130,18 +117,11 @@ export default defineEventHandler(async (event) => {
hour: currentHour,
day_type: dayType
})
if (!recentLogExists.get(server.target_id, 'CPU')) {
insertLog.run(server.target_id, server.server_name, 'CPU', level, currCpu, cpuDeviation, message)
}
}
// Memory 이상감지 + 로그 저장
// Memory 이상감지
if (Math.abs(memDeviation) >= DEVIATION_THRESHOLD) {
const level = Math.abs(memDeviation) >= 3.0 ? 'danger' : 'warning'
const direction = memDeviation >= 0 ? '높음' : '낮음'
const dayLabel = isWeekend ? '주말' : '평일'
const message = `Memory ${dayLabel} ${currentHour}시 베이스라인 대비 ${Math.abs(memDeviation).toFixed(1)}σ ${direction} (기준: ${memAvg.toFixed(1)}%, 현재: ${currMem.toFixed(1)}%)`
anomalies.push({
target_id: server.target_id,
@@ -155,10 +135,6 @@ export default defineEventHandler(async (event) => {
hour: currentHour,
day_type: dayType
})
if (!recentLogExists.get(server.target_id, 'Memory')) {
insertLog.run(server.target_id, server.server_name, 'Memory', level, currMem, memDeviation, message)
}
}
}