fix(services): снимать Down только с общего FQDN

Персональные A не крутить и не трогать при падении. Панель называется по режиму балансировки.

Co-authored-by: Cursor <[email protected]>

apps/web/src/lib/failover-events.test.ts

@@ -137,6 +137,7 @@ describe('toFailoverEvents', () => {
       },
     ])
     expect(failoverEventCopy(events[0]!)).toBe('Снята с gt.rkns.top')
+    expect(events[0]?.fqdns).not.toContain('nsgt.rkns.top')
   })
 
   it('Down только last-resort на своём FQDN', () => {
@@ -151,10 +152,8 @@ describe('toFailoverEvents', () => {
       ],
     )
     expect(events[0]?.kind).toBe('last-resort')
-    expect(events[0]?.fqdns).toEqual(['nsgt.rkns.top'])
-    expect(failoverEventCopy(events[0]!)).toBe(
-      'Down, в A-записях last-resort на nsgt.rkns.top',
-    )
+    expect(events[0]?.fqdns).toEqual([])
+    expect(failoverEventCopy(events[0]!)).toBe('Down, в A-записях last-resort')
   })
 
   it('down без A-записи на configured FQDN — снятие', () => {
@@ -279,7 +278,9 @@ describe('mergeFailoverHistory', () => {
       'removed:probe',
     ])
     expect(history[0]?.copy).toBe('130.49.213.153 добавлена на gt.rkns.top')
-    expect(history[1]?.copy).toContain('вышла из пула')
+    expect(history[1]?.copy).toBe(
+      '130.49.213.153 вышла из пула (gt.rkns.top)',
+    )
   })
 
   it('keeps DNS over a probe return in the same 2-minute window', () => {
@@ -291,4 +292,20 @@ describe('mergeFailoverHistory', () => {
     expect(history).toHaveLength(1)
     expect(history[0]?.source).toBe('dns')
   })
+
+  it('drops dedicated extra-FQDN DNS rows', () => {
+    const history = mergeFailoverHistory(
+      [
+        dns({
+          id: 11,
+          fqdn: 'nsgt.rkns.top',
+          action: 'added',
+          created_at: '2026-08-20 09:26:00',
+        }),
+      ],
+      [],
+      mskHip,
+    )
+    expect(history).toEqual([])
+  })
 })

apps/web/src/lib/failover-events.ts

@@ -44,6 +44,11 @@ export interface FailoverBindingPool {
   active: readonly string[]
 }
 
+/** Shared pool FQDN — two or more A targets. Dedicated extra-FQDN has one IP. */
+export function isSharedPoolBinding(binding: FailoverBindingPool): boolean {
+  return binding.configured.length >= 2
+}
+
 /** Инцидент только при down. up / degraded / unknown — не вывод из пула. */
 export function isFailoverEventStatus(status: string): boolean {
   return status === 'down'
@@ -72,6 +77,7 @@ export function toFailoverEvents(
     const removedFqdns: string[] = []
     const lastResortFqdns: string[] = []
     for (const binding of bindings) {
+      if (!isSharedPoolBinding(binding)) continue
       const configured = binding.configured.includes(row.ip)
       const active = binding.active.includes(row.ip)
       if (configured && !active) removedFqdns.push(binding.fqdn)
@@ -98,7 +104,18 @@ function fqdnsForIp(
   ip: string,
   bindings: readonly FailoverBindingPool[],
 ): string[] {
-  return bindings.filter((binding) => binding.configured.includes(ip)).map((binding) => binding.fqdn)
+  return bindings
+    .filter((binding) => isSharedPoolBinding(binding) && binding.configured.includes(ip))
+    .map((binding) => binding.fqdn)
+}
+
+function isPoolFqdn(
+  fqdn: string,
+  bindings: readonly FailoverBindingPool[],
+): boolean {
+  const binding = bindings.find((item) => item.fqdn === fqdn)
+  if (!binding) return true
+  return isSharedPoolBinding(binding)
 }
 
 function fqdnLabel(fqdns: string[]): string {
@@ -201,7 +218,9 @@ export function mergeFailoverHistory(
   bindings: readonly FailoverBindingPool[] = [],
 ): FailoverHistoryItem[] {
   const merged = [
-    ...dns.map(dnsHistoryItem),
+    ...dns
+      .filter((item) => isPoolFqdn(item.fqdn, bindings))
+      .map(dnsHistoryItem),
     ...toIpAliveTransitions(probes).map((transition) =>
       probeHistoryItem(transition, bindings),
     ),