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Alle stammen aus den Statistik-Schnittstellen des Kernels; keine liest Inhalte deiner Anwendungen. Details dazu unter ",[448,449,118],"a",{"href":119},".",[452,453,455],"h2",{"id":454},"wie-oft-gemessen-wird","Wie oft gemessen wird",[444,457,458,459,463,464,467,468,471,472,471,475,450],{},"Der Agent tastet die Werte im Sekundentakt-Bereich ab und schickt sie gebündelt im ",[460,461,462],"strong",{},"Report-Intervall"," an LIVCK. 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Kürzere Intervalle bedeuten feinere Diagramme und schnellere Alarme -- der Ressourcenverbrauch auf dem Server ändert sich dadurch praktisch nicht.",[542,543,546],"callout",{"title":544,"type":545},"Kurze Ausfälle gehen nicht verloren","info",[444,547,548],{},"Erreicht der Server LIVCK vorübergehend nicht, puffert der Agent die Messwerte und liefert sie nach, sobald die Verbindung zurück ist. Auch ein sauberer Neustart geht nicht verloren -- der Puffer wird vor dem Beenden auf die Platte geschrieben.",[452,550,552],{"id":551},"prozessor-systemlast","Prozessor & Systemlast",[478,554,555,565],{},[481,556,557],{},[484,558,559,562],{},[487,560,561],{},"Messwert",[487,563,564],{},"Was er dir sagt",[494,566,567,577,587,597,607,617],{},[484,568,569,574],{},[499,570,571],{},[460,572,573],{},"CPU-Auslastung gesamt",[499,575,576],{},"Wie ausgelastet der Prozessor ist -- der wichtigste Einzelwert",[484,578,579,584],{},[499,580,581],{},[460,582,583],{},"User \u002F System \u002F I\u002FO-Wait",[499,585,586],{},"Wofür die CPU-Zeit draufgeht: eigene Programme, Kernel, oder Warten auf die Festplatte. Hoher I\u002FO-Wait heißt: nicht die CPU ist das Problem, sondern der Speicher",[484,588,589,594],{},[499,590,591],{},[460,592,593],{},"Steal",[499,595,596],{},"Wie viel CPU-Zeit dir dein Virtualisierungs-Host wegnimmt. Dauerhaft hohe Werte heißen: dein Cloud-Nachbar ist zu laut",[484,598,599,604],{},[499,600,601],{},[460,602,603],{},"Systemlast 1 \u002F 5 \u002F 15 Min.",[499,605,606],{},"Wie viele Prozesse im Schnitt auf Ausführung warten -- der klassische Load Average",[484,608,609,614],{},[499,610,611],{},[460,612,613],{},"Prozesse gesamt \u002F Zombies",[499,615,616],{},"Anzahl laufender Prozesse; viele Zombie-Prozesse deuten auf eine fehlerhafte Anwendung hin",[484,618,619,624],{},[499,620,621],{},[460,622,623],{},"Laufzeit",[499,625,626],{},"Wie lange der Server ohne Neustart läuft",[542,628,631],{"title":629,"type":630},"Der Agent sammelt keine Prozessdaten","tip",[444,632,633],{},"Er zählt Prozesse, liest aber weder Namen noch Kommandozeilen. Eine „Top-Prozesse\"-Liste gibt es bewusst nicht.",[452,635,637],{"id":636},"arbeitsspeicher","Arbeitsspeicher",[478,639,640,648],{},[481,641,642],{},[484,643,644,646],{},[487,645,561],{},[487,647,564],{},[494,649,650,668,678,692,705],{},[484,651,652,657],{},[499,653,654],{},[460,655,656],{},"Belegt \u002F Verfügbar \u002F Gesamt",[499,658,659,660,663,664,667],{},"Die Grundwerte. Achte auf ",[460,661,662],{},"verfügbar",", nicht auf ",[460,665,666],{},"belegt"," -- Linux nutzt freien Speicher absichtlich als Cache",[484,669,670,675],{},[499,671,672],{},[460,673,674],{},"Cache \u002F Puffer",[499,676,677],{},"Der Anteil, den der Kernel jederzeit wieder freigeben kann",[484,679,680,685],{},[499,681,682],{},[460,683,684],{},"Belegung in Prozent",[499,686,687,688,691],{},"Der Wert, auf den du üblicherweise eine ",[448,689,690],{"href":131},"Alarm-Regel"," setzt",[484,693,694,699],{},[499,695,696],{},[460,697,698],{},"Out-of-Memory-Kills",[499,700,701,702],{},"Wie oft der Kernel einen Prozess wegen Speichermangel abgeschossen hat. Steigt der Zähler, gibt es zusätzlich ein ",[448,703,704],{"href":135},"Ereignis",[484,706,707,712],{},[499,708,709],{},[460,710,711],{},"Swap gesamt \u002F belegt \u002F in Prozent",[499,713,714],{},"Wandert dein System in den Swap, wird alles langsam -- oft der frühere Hinweis als die reine Speicherbelegung",[452,716,718],{"id":717},"ressourcen-druck-psi","Ressourcen-Druck (PSI)",[444,720,721,722,725,726,730],{},"Die ",[460,723,724],{},"Pressure Stall Information"," des Linux-Kernels misst, wie viel Zeit Prozesse mit ",[727,728,729],"em",{},"Warten"," verbringen -- auf CPU, auf Speicher, auf die Festplatte. Sie zeigt Engpässe oft früher als reine Auslastungswerte: Eine CPU kann zu 100 % ausgelastet sein, ohne dass jemand wartet -- und bei 70 % kann trotzdem alles hakeln.",[444,732,733,734,737,738,740,741,450],{},"Erfasst wird der Druck auf ",[460,735,736],{},"CPU",", ",[460,739,637],{}," und ",[460,742,743],{},"I\u002FO",[542,745,747],{"title":746,"type":545},"Nicht überall verfügbar",[444,748,749,750,754],{},"PSI braucht einen Kernel ab Version 4.20. Auf RHEL 9 und dessen Ableitungen ist es zwar einkompiliert, aber standardmäßig deaktiviert -- es lässt sich mit dem Kernel-Parameter ",[751,752,753],"code",{},"psi=1"," und einem Neustart einschalten. Fehlt PSI, bleiben diese Werte einfach leer; alles andere funktioniert normal.",[452,756,758],{"id":757},"festplatten","Festplatten",[478,760,761,769],{},[481,762,763],{},[484,764,765,767],{},[487,766,561],{},[487,768,564],{},[494,770,771,781,791,801],{},[484,772,773,778],{},[499,774,775],{},[460,776,777],{},"Belegung je Einhängepunkt",[499,779,780],{},"Belegt, gesamt und in Prozent -- für jede eingehängte Partition getrennt",[484,782,783,788],{},[499,784,785],{},[460,786,787],{},"Inode-Belegung",[499,789,790],{},"Der zweite Weg, eine Platte vollzumachen: viele winzige Dateien. „No space left on device\" bei 60 % Belegung kommt daher",[484,792,793,798],{},[499,794,795],{},[460,796,797],{},"Lesen \u002F Schreiben je Laufwerk",[499,799,800],{},"Durchsatz in Byte pro Sekunde",[484,802,803,808],{},[499,804,805],{},[460,806,807],{},"IOPS je Laufwerk",[499,809,810],{},"Lese- und Schreiboperationen pro Sekunde -- die eigentliche Grenze bei Datenbanklast",[444,812,813,814,819],{},"Der Agent überspringt automatisch Pseudo- und Netzwerkdateisysteme und meldet ",[460,815,816],{},[751,817,818],{},"sys.agent.stuck_mounts",", wenn ein Einhängepunkt nicht mehr antwortet -- ein zuverlässiger Frühwarnwert für hängende NFS-Mounts.",[444,821,822,823,450],{},"Läuft eine Partition vollständig voll oder wird ein Dateisystem schreibgeschützt umgehängt, erzeugt der Agent zusätzlich ein ",[448,824,704],{"href":135},[452,826,828],{"id":827},"netzwerk","Netzwerk",[444,830,831],{},"Je Netzwerkschnittstelle:",[478,833,834,842],{},[481,835,836],{},[484,837,838,840],{},[487,839,561],{},[487,841,564],{},[494,843,844,853],{},[484,845,846,851],{},[499,847,848],{},[460,849,850],{},"Empfangen \u002F Gesendet",[499,852,800],{},[484,854,855,860],{},[499,856,857],{},[460,858,859],{},"Empfangsfehler \u002F Sendefehler",[499,861,862],{},"Fehlerhafte Pakete pro Sekunde -- Hinweis auf defekte Kabel, überlastete Switches oder MTU-Probleme",[444,864,865,866,869],{},"Die Loopback-Schnittstelle (",[751,867,868],{},"lo",") wird standardmäßig ausgelassen.",[452,871,873],{"id":872},"grafikkarten-gpu","Grafikkarten (GPU)",[444,875,876,877,737,880,737,883,740,886,889],{},"Wird eine unterstützte GPU erkannt, misst der Agent zusätzlich ",[460,878,879],{},"Auslastung",[460,881,882],{},"belegten und gesamten Grafikspeicher",[460,884,885],{},"Temperatur",[460,887,888],{},"Leistungsaufnahme"," je Karte.",[478,891,892,905],{},[481,893,894],{},[484,895,896,899,902],{},[487,897,898],{},"Hersteller",[487,900,901],{},"Wie ausgelesen",[487,903,904],{},"Voraussetzung",[494,906,907,926,942],{},[484,908,909,914,920],{},[499,910,911],{},[460,912,913],{},"NVIDIA",[499,915,916,917],{},"über ",[751,918,919],{},"nvidia-smi",[499,921,922,923,925],{},"Treiber und ",[751,924,919],{}," müssen installiert sein",[484,927,928,933,939],{},[499,929,930],{},[460,931,932],{},"AMD",[499,934,935,936],{},"direkt aus ",[751,937,938],{},"\u002Fsys",[499,940,941],{},"keine zusätzliche Software nötig",[484,943,944,949,952],{},[499,945,946],{},[460,947,948],{},"Intel",[499,950,951],{},"derzeit nicht unterstützt",[499,953,954],{},"--",[444,956,957,958,961],{},"Findet der Agent keine unterstützte Karte, bleibt der Reiter ",[460,959,960],{},"Grafik"," in der Detailansicht leer und nennt den Grund.",[452,963,965],{"id":964},"festplattengesundheit-smart","Festplattengesundheit (SMART)",[444,967,968,969,972,973,737,976,737,978,737,981,737,984,737,987,737,990,737,993,740,996,450],{},"Ist ",[751,970,971],{},"smartctl"," auf dem Server installiert, liest der Agent die Gesundheitswerte deiner Laufwerke aus: ",[460,974,975],{},"Gesamtstatus",[460,977,885],{},[460,979,980],{},"Abnutzung",[460,982,983],{},"verbleibende Reserveblöcke",[460,985,986],{},"reallozierte und schwebende Sektoren",[460,988,989],{},"Betriebsstunden",[460,991,992],{},"Einschaltzyklen",[460,994,995],{},"Medienfehler",[460,997,998],{},"kritische Warnungen",[542,1000,1003],{"title":1001,"type":1002},"SMART braucht in der Regel Root-Rechte","warning",[444,1004,1005,1006,1009,1010,1013,1014,1016],{},"Der Agent läuft bewusst ",[460,1007,1008],{},"ohne"," Root-Rechte. Viele Laufwerke geben ihre SMART-Werte nur an einen privilegierten Prozess heraus -- dann bleibt der Reiter ",[460,1011,1012],{},"SMART"," leer, obwohl ",[751,1015,971],{}," installiert ist. Die Detailansicht nennt dir den konkreten Grund (Werkzeug fehlt, keine unterstützten Laufwerke, Collector deaktiviert).",[452,1018,138],{"id":1019},"erreichbarkeits-prüfungen",[444,1021,1022],{},"Zusätzlich kann der Agent von deinem Server aus prüfen, ob andere Systeme antworten -- interne Datenbanken, Gateways, Registries oder DNS-Resolver. Gemessen werden Erreichbarkeit, Antwortzeit, Paketverlust, HTTP-Statuscode und Zertifikatsrestlaufzeit.",[444,1024,1025,1026,450],{},"Das ist standardmäßig aus und wird pro Server konfiguriert: ",[448,1027,138],{"href":139},[452,1029,1031],{"id":1030},"der-agent-über-sich-selbst","Der Agent über sich selbst",[444,1033,1034,1035,737,1038,737,1041,740,1044,1047],{},"Damit du siehst, dass er sich benimmt: ",[460,1036,1037],{},"Arbeitsspeicherverbrauch",[460,1039,1040],{},"CPU-Anteil",[460,1042,1043],{},"Puffer-Füllstand",[460,1045,1046],{},"verworfene Reports",". Im Normalbetrieb liegt der Verbrauch weit unter den harten Grenzen von 64 MB RAM und 40 % eines Kerns.",[452,1049,1051],{"id":1050},"server-steckbrief","Server-Steckbrief",[444,1053,1054,1055,737,1058,737,1061,737,1064,737,1067,737,1070,737,1073,737,1076,1079,1080,450],{},"Einmalig bei der Anmeldung und danach bei Änderungen meldet der Agent: ",[460,1056,1057],{},"Betriebssystem und Version",[460,1059,1060],{},"Kernel",[460,1062,1063],{},"Architektur",[460,1065,1066],{},"CPU-Modell und Kernanzahl",[460,1068,1069],{},"RAM-Größe",[460,1071,1072],{},"Startzeitpunkt",[460,1074,1075],{},"Hostname",[460,1077,1078],{},"Agent-Version"," und ob ein Neustart aussteht. Diese Angaben findest du in der Detailansicht in der Karte ",[460,1081,1082],{},"Host",[452,1084,1086],{"id":1085},"mengenbegrenzungen","Mengenbegrenzungen",[444,1088,1089],{},"Damit ein Server mit hundert Einhängepunkten die Diagramme nicht unlesbar macht, gelten Obergrenzen je Server:",[478,1091,1092,1102],{},[481,1093,1094],{},[484,1095,1096,1099],{},[487,1097,1098],{},"Kategorie",[487,1100,1101],{},"Höchstzahl",[494,1103,1104,1112,1120,1127,1135,1143],{},[484,1105,1106,1109],{},[499,1107,1108],{},"Einhängepunkte",[499,1110,1111],{},"20",[484,1113,1114,1117],{},[499,1115,1116],{},"Laufwerke (I\u002FO)",[499,1118,1119],{},"10",[484,1121,1122,1125],{},[499,1123,1124],{},"Netzwerkschnittstellen",[499,1126,1119],{},[484,1128,1129,1132],{},[499,1130,1131],{},"GPUs",[499,1133,1134],{},"8",[484,1136,1137,1140],{},[499,1138,1139],{},"Laufwerke (SMART)",[499,1141,1142],{},"16",[484,1144,1145,1148],{},[499,1146,1147],{},"Erreichbarkeits-Ziele",[499,1149,1150],{},"15",[452,1152,1154],{"id":1153},"wie-lange-die-werte-verfügbar-sind","Wie lange die Werte verfügbar sind",[444,1156,1157],{},"Frische Messwerte liegen in voller Auflösung vor. Ältere Zeiträume verdichtet LIVCK automatisch zu Stunden- und danach zu Tageswerten -- die Diagramme bleiben dadurch auch über 30 Tage flüssig, ohne dass Spitzen verloren gehen (Minimum, Maximum und Perzentile werden mit verdichtet).",[444,1159,1160,1161,1164],{},"Wie weit du zurückblicken kannst, richtet sich nach der ",[448,1162,1163],{"href":329},"Datenaufbewahrung"," deines Plans: 30 Tage (Free), 90 Tage (Solo), 180 Tage (Team), 365 Tage (Business).",[452,1166,1168],{"id":1167},"wo-du-die-werte-siehst","Wo du die Werte siehst",[1170,1171,1172,1179,1185,1191,1200],"ul",{},[1173,1174,1175,1178],"li",{},[460,1176,1177],{},"Live-Ansicht"," -- Sekundentakt, solange die Detailseite offen ist",[1173,1180,1181,1184],{},[460,1182,1183],{},"Detailansicht"," -- die letzten 60 Minuten plus Geräte-Reiter für Speicher, Grafik, SMART und Erreichbarkeit",[1173,1186,1187,1190],{},[460,1188,1189],{},"Analyse"," -- Langzeitdiagramme mit Perzentilen über 1 Stunde bis 30 Tage",[1173,1192,1193,1195,1196,1199],{},[460,1194,130],{}," -- jeder Messwert lässt sich als ",[448,1197,1198],{"href":131},"Schwellwert"," überwachen",[1173,1201,1202,1205,1206],{},[460,1203,1204],{},"Statuspage"," -- ausgewählte Werte ",[448,1207,1208],{"href":147},"öffentlich zeigen",[452,1210,1212],{"id":1211},"weiterführende-themen","Weiterführende Themen",[1170,1214,1215,1220,1225,1230],{},[1173,1216,1217,1219],{},[448,1218,126],{"href":127}," -- wo welche Werte auftauchen",[1173,1221,1222,1224],{},[448,1223,130],{"href":131}," -- Schwellwerte auf diese Messwerte setzen",[1173,1226,1227,1229],{},[448,1228,134],{"href":135}," -- Neustarts, OOM-Kills, volle Platten",[1173,1231,1232,1234],{},[448,1233,138],{"href":139}," -- vom Server aus messen",{"title":1236,"searchDepth":1237,"depth":1237,"links":1238},"",3,[1239,1241,1242,1243,1244,1245,1246,1247,1248,1249,1250,1251,1252,1253,1254],{"id":454,"depth":1240,"text":455},2,{"id":551,"depth":1240,"text":552},{"id":636,"depth":1240,"text":637},{"id":717,"depth":1240,"text":718},{"id":757,"depth":1240,"text":758},{"id":827,"depth":1240,"text":828},{"id":872,"depth":1240,"text":873},{"id":964,"depth":1240,"text":965},{"id":1019,"depth":1240,"text":138},{"id":1030,"depth":1240,"text":1031},{"id":1050,"depth":1240,"text":1051},{"id":1085,"depth":1240,"text":1086},{"id":1153,"depth":1240,"text":1154},{"id":1167,"depth":1240,"text":1168},{"id":1211,"depth":1240,"text":1212},"Alle Messwerte des LIVCK-Agenten in Klartext -- von CPU und Arbeitsspeicher bis GPU, SMART und Erreichbarkeit.","md",{},null,{"title":122,"description":1255},"QonT0Iw0UpZo9vVqkQjmzNCi1ZIaLHizgDVlwBeeX14",1784953292762]