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Für „ist der Host da?\" nimm stattdessen eine TCP-Prüfung auf einen Port, der ohnehin offen ist (z.B. 22). Ein echter ",[572,573,574],"a",{"href":50},"ICMP-Check"," von außen bleibt davon unberührt.",[453,577,579],{"id":578},"ein-ziel-anlegen","Ein Ziel anlegen",[581,582,583,596,603,646,653],"ol",{},[461,584,585,588,589,592,593],{},[448,586,587],{},"Server"," → Server öffnen → ",[448,590,591],{},"Bearbeiten"," → Reiter ",[448,594,595],{},"Erreichbarkeit",[461,597,598,599,602],{},"Auf ",[448,600,601],{},"\"Ziel hinzufügen\""," klicken",[461,604,605,606],{},"Ausfüllen:\n",[458,607,608,614,619,633],{},[461,609,610,613],{},[448,611,612],{},"Bezeichnung"," -- ein sprechender Name, z.B. „Postgres primär\"",[461,615,616,618],{},[448,617,501],{}," -- TCP-Port, HTTP, HTTPS oder DNS",[461,620,621,624,625,629,630],{},[448,622,623],{},"Ziel (Host\u002FIP)"," -- z.B. ",[626,627,628],"code",{},"10.0.0.5"," oder ",[626,631,632],{},"db.internal",[461,634,635,638,639,638,642,645],{},[448,636,637],{},"Port"," \u002F ",[448,640,641],{},"Pfad",[448,643,644],{},"Resolver"," -- je nach Typ",[461,647,648,649,652],{},"Optional das ",[448,650,651],{},"Prüfintervall"," anpassen (30 bis 300 Sekunden, Standard 60)",[461,654,655],{},[448,656,657],{},"Speichern",[444,659,660,661,664],{},"Pro Server sind bis zu ",[448,662,663],{},"15 Ziele"," möglich.",[564,666,669],{"title":667,"type":668},"Cloud-Metadaten-Adressen sind gesperrt","warning",[444,670,671,672,675],{},"Die Adresse ",[626,673,674],{},"169.254.169.254"," -- der Metadatendienst der meisten Cloud-Anbieter -- kann nicht als Ziel eingetragen werden.",[453,677,679],{"id":678},"was-du-zurückbekommst","Was du zurückbekommst",[444,681,682],{},"Für jedes Ziel misst der Agent:",[490,684,685,695],{},[493,686,687],{},[496,688,689,692],{},[499,690,691],{},"Messwert",[499,693,694],{},"Bedeutung",[509,696,697,707,717,727,737],{},[496,698,699,704],{},[514,700,701],{},[448,702,703],{},"Status",[514,705,706],{},"Erreichbar \u002F Nicht erreichbar \u002F Ausstehend",[496,708,709,714],{},[514,710,711],{},[448,712,713],{},"Antwortzeit",[514,715,716],{},"Durchschnitt sowie Minimum und Maximum",[496,718,719,724],{},[514,720,721],{},[448,722,723],{},"Verlust",[514,725,726],{},"Anteil fehlgeschlagener Versuche in Prozent",[496,728,729,734],{},[514,730,731],{},[448,732,733],{},"HTTP-Status",[514,735,736],{},"Der Statuscode bei HTTP- und HTTPS-Prüfungen",[496,738,739,744],{},[514,740,741],{},[448,742,743],{},"Zertifikat",[514,745,746],{},"Verbleibende Gültigkeit bei HTTPS-Prüfungen",[444,748,749,750,752],{},"Die Ergebnisse siehst du in der Detailansicht im Reiter ",[448,751,595],{},".",[453,754,756],{"id":755},"alarmieren","Alarmieren",[444,758,759,760,763,764,766],{},"Jedes Ziel lässt sich mit einer ",[572,761,762],{"href":131},"Alarm-Regel"," überwachen. Wähle im Regel-Dialog eine Metrik aus der Gruppe ",[448,765,595],{}," und als Instanz dein Ziel.",[444,768,769],{},"Typische Regeln:",[490,771,772,791],{},[493,773,774],{},[496,775,776,779,782,785,788],{},[499,777,778],{},"Ziel",[499,780,781],{},"Metrik",[499,783,784],{},"Regel",[499,786,787],{},"Dauer",[499,789,790],{},"Auswirkung",[509,792,793,809,825,841],{},[496,794,795,798,800,803,806],{},[514,796,797],{},"Datenbank ist weg",[514,799,595],{},[514,801,802],{},"Wert = 0",[514,804,805],{},"120 s",[514,807,808],{},"Ausfall",[496,810,811,814,816,819,822],{},[514,812,813],{},"Datenbank wird langsam",[514,815,713],{},[514,817,818],{},"> 50 ms",[514,820,821],{},"300 s",[514,823,824],{},"Beeinträchtigt",[496,826,827,830,833,836,839],{},[514,828,829],{},"Zertifikat läuft ab",[514,831,832],{},"Zertifikat-Restlaufzeit",[514,834,835],{},"\u003C 336 Stunden (14 Tage)",[514,837,838],{},"sofort",[514,840,824],{},[496,842,843,846,848,851,853],{},[514,844,845],{},"Paketverlust im Netz",[514,847,723],{},[514,849,850],{},"> 10 %",[514,852,821],{},[514,854,824],{},[564,856,859],{"title":857,"type":858},"Interne Hostnamen bleiben intern","tip",[444,860,861],{},"In den Messreihen taucht nur deine selbstgewählte Bezeichnung auf, nicht der Hostname des Ziels. Der Agent verbindet sich natürlich mit dem echten Ziel -- aber der Name wandert nicht in die Metrik-Schlüssel.",[453,863,865],{"id":864},"abgrenzung-zu-den-checks-von-außen","Abgrenzung zu den Checks von außen",[490,867,868,882],{},[493,869,870],{},[496,871,872,874,877],{},[499,873],{},[499,875,876],{},"Erreichbarkeits-Prüfung (Agent)",[499,878,879],{},[572,880,881],{"href":29},"Check von außen",[509,883,884,895,906,916,925,935],{},[496,885,886,889,892],{},[514,887,888],{},"Startpunkt",[514,890,891],{},"dein Server",[514,893,894],{},"LIVCK-Standorte weltweit",[496,896,897,900,903],{},[514,898,899],{},"Erreicht private Netze",[514,901,902],{},"ja",[514,904,905],{},"nein",[496,907,908,911,914],{},[514,909,910],{},"Eigener Service in LIVCK",[514,912,913],{},"nein -- Teil des Servers",[514,915,902],{},[496,917,918,921,923],{},[514,919,920],{},"Eigene Statuspage-Komponente",[514,922,905],{},[514,924,902],{},[496,926,927,929,932],{},[514,928,488],{},[514,930,931],{},"TCP, HTTP, HTTPS, DNS",[514,933,934],{},"HTTP, TCP, DNS, ICMP, SSL, Heartbeat, manuell",[496,936,937,940,943],{},[514,938,939],{},"Mehrheitsregel über Standorte",[514,941,942],{},"nein (eine Quelle)",[514,944,902],{},[444,946,947],{},"Beide ergänzen sich: Der externe Check beantwortet „kommen meine Kunden rein?\", die Erreichbarkeits-Prüfung „funktioniert mein Backend intern noch?\".",[453,949,951],{"id":950},"weiterführende-themen","Weiterführende Themen",[458,953,954,959,964],{},[461,955,956,958],{},[572,957,130],{"href":131}," -- auf Erreichbarkeit alarmieren",[461,960,961,963],{},[572,962,122],{"href":123}," -- alle Messwerte im Überblick",[461,965,966,968],{},[572,967,73],{"href":74}," -- die Gegenprobe von außen",{"title":970,"searchDepth":971,"depth":971,"links":972},"",3,[973,975,976,977,978,979,980],{"id":455,"depth":974,"text":456},2,{"id":487,"depth":974,"text":488},{"id":578,"depth":974,"text":579},{"id":678,"depth":974,"text":679},{"id":755,"depth":974,"text":756},{"id":864,"depth":974,"text":865},{"id":950,"depth":974,"text":951},"Lass den Agenten von deinem Server aus prüfen, ob Datenbanken, Gateways und Resolver antworten.","md",{},null,{"title":138,"description":981},"fT68lgkUgyZ6Yy0SDno_9lWq_bZhCs90bGpViEe-0c8",1784953293960]