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fix: guard configurable monitoring ratios

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hectorzhao
2026-08-14 17:59:22 +08:00
parent 6ccc102830
commit 0cd09441da
4 changed files with 12 additions and 7 deletions
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api/src/infrastructure-monitoring/infrastructure-alert-settings.service.spec.ts
+2
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@@ -10,6 +10,8 @@ describe('InfrastructureAlertSettingsService', () => {
expect(rules).toContain('HostCpuUsageWarning');
expect(rules).toContain('CmppGatewayQueueDelayedCritical');
expect(rules).toContain('threshold: "120秒"');
expect(rules).toContain('redis_memory_max_bytes > 0');
expect(rules).toContain('sum(increase(cmpp_api_http_requests_total');
});
it('rejects unknown keys and warning thresholds that are not below critical', () => {
api/src/infrastructure-monitoring/infrastructure-alert-settings.service.ts
+5 -3
View File
@@ -14,12 +14,12 @@ export const ALERT_THRESHOLD_DEFINITIONS = [
{ key: 'hostCpu', label: '主机 CPU 使用率', unit: '%', min: 1, max: 100, step: 1, warning: 80, critical: 90, expr: '100 - (avg by (instance) (rate(node_cpu_seconds_total{mode="idle"}[5m])) * 100)', names: ['HostCpuUsageWarning', 'HostCpuUsageCritical'], service: 'host', durations: ['10m', '5m'] },
{ key: 'hostMemory', label: '主机内存使用率', unit: '%', min: 1, max: 100, step: 1, warning: 85, critical: 95, expr: '(1 - node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes) * 100', names: ['HostMemoryUsageWarning', 'HostMemoryUsageCritical'], service: 'host', durations: ['10m', '5m'] },
{ key: 'hostDisk', label: '根磁盘使用率', unit: '%', min: 1, max: 100, step: 1, warning: 80, critical: 90, expr: '(1 - node_filesystem_avail_bytes{mountpoint="/",fstype!~"tmpfs|overlay|squashfs"} / node_filesystem_size_bytes{mountpoint="/",fstype!~"tmpfs|overlay|squashfs"}) * 100', names: ['HostRootDiskUsageWarning', 'HostRootDiskUsageCritical'], service: 'host', durations: ['15m', '5m'] },
{ key: 'apiError', label: 'API 5xx 错误率', unit: '%', min: 0.1, max: 100, step: 0.1, warning: 1, critical: 5, expr: '100 * sum(rate(cmpp_api_http_requests_total{status=~"5.."}[5m])) / clamp_min(sum(rate(cmpp_api_http_requests_total[5m])), 0.001)', names: ['CmppApiHttpErrorRateWarning', 'CmppApiHttpErrorRateCritical'], service: 'api', durations: ['5m', '5m'] },
{ key: 'apiError', label: 'API 5xx 错误率', unit: '%', min: 0.1, max: 100, step: 0.1, warning: 1, critical: 5, expr: '100 * sum(rate(cmpp_api_http_requests_total{status=~"5.."}[5m])) / clamp_min(sum(rate(cmpp_api_http_requests_total[5m])), 0.001)', guard: 'sum(increase(cmpp_api_http_requests_total{status=~"5.."}[5m])) >= 5', names: ['CmppApiHttpErrorRateWarning', 'CmppApiHttpErrorRateCritical'], service: 'api', durations: ['5m', '5m'] },
{ key: 'apiLatency', label: 'API P95 响应时间', unit: '秒', min: 0.1, max: 60, step: 0.1, warning: 1, critical: 3, expr: 'histogram_quantile(0.95, sum by (le) (rate(cmpp_api_http_request_duration_seconds_bucket[10m])))', names: ['CmppApiLatencyWarning', 'CmppApiLatencyCritical'], service: 'api', durations: ['10m', '5m'] },
{ key: 'apiEventLoop', label: 'API 事件循环 P99', unit: '秒', min: 0.01, max: 10, step: 0.01, warning: 0.2, critical: 1, expr: 'cmpp_api_nodejs_event_loop_lag_p99_seconds', names: ['CmppApiEventLoopLagWarning', 'CmppApiEventLoopLagCritical'], service: 'api', durations: ['10m', '5m'] },
{ key: 'gatewayQueue', label: 'Gateway 最旧 pending', unit: '秒', min: 1, max: 3600, step: 1, warning: 30, critical: 120, expr: 'cmpp_gateway_submit_queue_oldest_pending_age_seconds', names: ['CmppGatewayQueueDelayedWarning', 'CmppGatewayQueueDelayedCritical'], service: 'gateway', durations: ['2m', '2m'] },
{ key: 'postgresConnections', label: 'PostgreSQL 连接使用率', unit: '%', min: 1, max: 100, step: 1, warning: 70, critical: 85, expr: '100 * sum(pg_stat_activity_count) / clamp_min(max(pg_settings_max_connections), 1)', names: ['PostgresConnectionsWarning', 'PostgresConnectionsCritical'], service: 'postgresql', durations: ['10m', '5m'] },
{ key: 'redisMemory', label: 'Redis 内存使用率', unit: '%', min: 1, max: 100, step: 1, warning: 70, critical: 85, expr: '100 * redis_memory_used_bytes / redis_memory_max_bytes', names: ['RedisMemoryWarning', 'RedisMemoryCritical'], service: 'redis', durations: ['10m', '5m'] },
{ key: 'redisMemory', label: 'Redis 内存使用率', unit: '%', min: 1, max: 100, step: 1, warning: 70, critical: 85, expr: '100 * redis_memory_used_bytes / redis_memory_max_bytes', guard: 'redis_memory_max_bytes > 0', names: ['RedisMemoryWarning', 'RedisMemoryCritical'], service: 'redis', durations: ['10m', '5m'] },
{ key: 'minioCapacity', label: 'MinIO 容量使用率', unit: '%', min: 1, max: 100, step: 1, warning: 80, critical: 90, expr: '100 * (1 - minio_cluster_capacity_usable_free_bytes / minio_cluster_capacity_usable_total_bytes)', names: ['MinioCapacityWarning', 'MinioCapacityCritical'], service: 'minio', durations: ['15m', '5m'] },
] as const;
@@ -110,7 +110,9 @@ export class InfrastructureAlertSettingsService {
const values = [pair.warning, pair.critical];
for (let index = 0; index < 2; index += 1) {
const isWarning = index === 0;
const expr = isWarning ? `(${definition.expr} > ${values[0]}) and (${definition.expr} <= ${values[1]})` : `${definition.expr} > ${values[1]}`;
// 低样本量与“未配置容量上限”必须继续作为固定保护条件，避免单次错误或除零结果触发伪告警。
const guard = 'guard' in definition ? ` and (${definition.guard})` : '';
const expr = isWarning ? `(${definition.expr} > ${values[0]}) and (${definition.expr} <= ${values[1]})${guard}` : `(${definition.expr} > ${values[1]})${guard}`;
lines.push(` - alert: ${definition.names[index]}`, ` expr: ${expr}`, ` for: ${definition.durations[index]}`, ' labels:', ` severity: ${isWarning ? 'warning' : 'critical'}`, ` service: ${definition.service}`, ' annotations:', ` summary: "${definition.label}${isWarning ? '达到警告阈值' : '达到严重阈值'}"`, ` description: "${definition.label}持续超过${values[index]}${definition.unit}。"`, ' currentValue: "{{ $value }}"', ` threshold: "${values[index]}${definition.unit}"`);
}
}