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Introduction A jtel ACD consists of a minimum 2 of virtual machines and may grow to sizes of 30 or more, in concurrence with for example redundancy or performance requirements. Based on a systems architecture, there are certain dependencies between the services, so a clean startup and shutdown is required and only done in a certain order to prevent problems during and after startup. The following page describes the various possible scenarios for proper shutdown and startup procedures, depending on the systems architecture.
Page Layout The pages are split into a parent and child pages. This parent page contains general information. The child pages each contain information about the specific procedure, depending on the sizing of the system. The sizing variants are Small, Medium and Large General
Dependencies All services of the platform are dependent on two central entities:
To boot the solution, the storage should always be booted first. If this is external to the solution, continue with the next step. Otherwise, the computer (or in case of redundancy - both computers) is started on which the storage is located. This is usually the load balancer, but for larger systems a separate storage machine could have been implemented. Afterwards, the master database is booted. As soon as its is finished, the slave can be started up. Finally, the telephony servers and web servers can be started up in any order, even simultaneously. Startup Dependencies for Large Systems Shutting down redundant clusters is generally easier than starting them back up. If problems occur after starting back up, some components must be checked. Database:
Load Balancing:
Storage:
Checks after starting a system To ensure proper system functionality after a boot, tests are required. Follow the guideline on this page: System Health Check Medium V1 First shutdown acd-tel and acd-jbN in no particular order. You do not have to wait until acd-tel and acd-jbN are down before starting the shutdown at acd-dbs/dbr. Wait until acd-dbs/dbr is shutdown before shutting acd-dbm down. Wait until acd-dbm is shutdown before shutting acd-store/lb down. Medium V2 First shutdown acd-tel and acd-jbN in no particular order. You do not have to wait until acd-tel and acd-jbN are down before shutting acd-dbs/dbr down. Wait until acd-dbs/dbr is shutdown before shutting acd-dbm down. Wait until acd-dbm is shutdown before shutting acd-lb down. Wait until acd-lb is shutdown before shutting acd-store down. Large V1 - Redundant Databases When shutting down a redundant database architecture, the inactive machines are shutdown first. Therefore, before a shutdown procedure can begin, the active machines must be known. The table at Large V1 assumes that acd-dbm2 is currently the active master database and displays the shutdown procedure according to that. Only start the next step if the previous shutdown was completed successfully: First shutdown acd-tel and acd-jbN in no particular order. You do not have to wait until acd-tel and acd-jbN are down before shutting acd-dbs1/dbr1 and acd-dbs2/dbr2 down simultaneously, but in correct order. Wait until acd-dbs1/dbr1 and acd-dbs2/dbr2 are down until shutting acd-dbm1 down. Wait until acd-dbm1 is down before shutting down acd-dbm2. Wait until acd-dbm2 is down before shutting down acd-lb. Wait until acd-lb is down before shutting acd-store down. Large V2 - Redundant Databases + Load Balancing When shutting down a redundant load balancing architecture, the inactive machines are shutdown first. Therefore, before a shutdown procedure can begin, the active machines must be known. The table at Large V2 assumes that acd-lb2 is currently the active load balancer and displays the shutdown procedure according to that. Only start the next step if the previous shutdown was completed successfully: First shutdown acd-tel and acd-jbN in no particular order. You do not have to wait until acd-tel and acd-jbN are down before shutting acd-dbs1/dbr1 and acd-dbs2/dbr2 down simultaneously, but in correct order. Wait until acd-dbs1/dbr1 and acd-dbs2/dbr2 are down until shutting acd-dbm1 down. Wait until acd-dbm1 is down before shutting down acd-dbm2. Wait until acd-dbm2 is down before shutting down acd-lb1. Wait until acd-lb1 is down before shutting down acd-lb2. Wait until acd-lb2 is down before shutting down acd-store. Large V3 - Redundant Databases + Load Balancing + Storage When shutting down a redundant storage architecture, the inactive machine is shutdown first. Therefore, before a shutdown procedure can begin, the active machine must be known. The table at Large V3 assumes that acd-store2 is currently the active storage and displays the shutdown procedure according to that. Only start the next step if the previous shutdown was completed successfully: First shutdown acd-tel and acd-jbN in no particular order. You do not have to wait until acd-tel and acd-jbN are down before shutting acd-dbs1/dbr1 and acd-dbs2/dbr2 down simultaneously, but in correct order. Wait until acd-dbs1/dbr1 and acd-dbs2/dbr2 are down until shutting acd-dbm1 down. Wait until acd-dbm1 is down before shutting down acd-dbm2. Wait until acd-dbm2 is down before shutting down acd-lb1. Wait until acd-lb1 is down before shutting down acd-lb2. Wait until acd-lb2 is down before shutting down acd-store1. Wait until acd-store1 is down until shutting acd-store2 down. Medium Medium V1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Steps 1 to N | Shutdown | Startup | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1 | acd-tel | acd-store/lb | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2 | acd-jbN | acd-dbm | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3 | acd-dbs/dbr | acd-dbs/dbr | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4 | acd-dbm | acd-jbN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5 | acd-store/lb | acd-tel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Steps 1 to N | Shutdown | Startup | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1 | acd-tel | acd-store | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2 | acd-jbN | acd-lb | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3 | acd-dbs/dbr | acd-dbm | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4 | acd-dbm | acd-dbs/dbr | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5 | acd-lb | acd-jbN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6 | acd-store | acd-tel |
Warning |
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When starting up a redundant database architecture, replication status must be checked on all replication partners of the system. Additional information can be found here: System Health Check |
First start acd-store and wait until it is up. Start acd-lb and wait until it is up. Start acd-dbm2 and wait until it is up. Start acd-dbm1 and wait until it is up. start acd-dbs2/dbr2 and wait until it is up. Start acd-dbs1/dbr1 and wait until it is up. Start acd-jbN and acd-tel afterwards in no particular order.
Large V2
Warning |
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When starting up a redundant load balancing architecture, the pcs cluster status must be checked on all pcs cluster members. Additional information can be found here: System Health Check |
First start acd-store and wait until it is up. Start acd-lb2 and wait until it is up. Start acd-lb1 and wait until it is up. Start acd-dbm2 and wait until it is up. Start acd-dbm1 and wait until it is up. start acd-dbs2/dbr2 and wait until it is up. Start acd-dbs1/dbr1 and wait until it is up. Start acd-jbN and acd-tel afterwards in no particular order.
Large V3
Warning |
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When starting up a redundant storage architecture, the pcs cluster and drbd replication status must be checked on all pcs cluster members. Additional information can be found here: System Health Check |
First start acd-store2 and wait until it is up. Start acd-store1 and wait until it is up. Start acd-lb2 and wait until it is up. Start acd-lb1 and wait until it is up. Start acd-dbm2 and wait until it is up. Start acd-dbm1 and wait until it is up. start acd-dbs2/dbr2 and wait until it is up. Start acd-dbs1/dbr1 and wait until it is up. Start acd-jbN and acd-tel afterwards in no particular order.
Large
Large V1 - Redundant Databases
Large V2 - Redundant Databases + Load Balancing
Large V3 - Redundant Databases + Load Balancing + Storage
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Hoch- und RunterfahrenAlle Systeme sind so gestaltet, dass Sie hochfahren und alle Dienste selbstständig starten. Dennoch ergeben sich gewisse Abhängigkeiten zwischen den Diensten, sodass ein sauberes Hoch- und Herunterfahren am besten geschieht, wenn eine gewisse Reihenfolge betrachtet wird. HochfahrenAbhängigkeitenAlle Dienste der Plattform sind von zwei zentrale Entitäten abhängig:
Für das Hochfahren der Lösung, sollte immer zuerst das Storage hochgefahren werden. Wenn dies Extern zur Lösung ist, dann fährt man mit den nächsten Schritt fort. Ansonsten, wird der Rechner (oder bei Redundanz - beide Rechner) gestartet auf den das Storage ist. Dies ist in der Regel der Load-Balancer, bei größere Systeme kann jedoch eine separate Storage-Maschine implementiert worden sein. Anschließend, wird die Master Datenbank hochgefahren. Sobald dieser oben ist, kann der Slave hochgefahren werden. Zum Schluss können die Telefonieserver und Webserver in einer beliebigen Reihenfolge, auch gleichzeitig, hochgefahren werden. ReihenfolgeIm Folgenden wird von einer nicht redundante Lösung ausgegangen. Der Betrieb einer redundanten Lösung bedarf eine gesonderte Schulung. Somit ergibt sich folgende Startreihenfolge:
Prüfungen
HerunterfahrenReihenfolgeDas Herunterfahren geschieht in der umgekehrten Reihenfolge:
Zwischen den einzelnen Schritten ist es nicht zwingend notwendig zu warten, ledeglich Schritt 1 sollte insgesamt abgeschlossen sein bevor man fortfährt. Hoch- und Runterfahren - Redundante KomponetenWenn das gesamte System heruntergefahren wird, kann es sein, dass manche Komponenten nicht sofort verfügbar sind, bzw. dass ein manueller Eingriff notwendig ist. Storage (Redundant)Runterfahren (nur einer)Immer eins nacheinander herunterfahren. Mit:
feststellen welcher Node aktiv ist. Auf den anderen node:
Dann diesen Node herunterfahren. Hochfahren (nur einer)Wurde nur ein Node neu gestartet, dann kann der Betrieb wieder aufgenommen werden indem man auf den Secondary folgendes nach dem Neustart eingibt:
Sync status prüfen mit:
Nachdem der Sync ggf. erfolgt ist, und fertig ist:
Runterfahren (beide)Mit:
feststellen welcher Node aktiv ist (der Node auf den das Samba sowie die virtuelle IP läuft). Dies ist der Primary Node. Mit:
den Cluster auf inaktiv setzen. Auf auf den Secondary zuerst, dann Primary:
Hochfahren (beide)Beide nodes booten. Auf beide Nodes (Primary zuerst):
Prüfen mit:
Beide Nodes sollten auf Secondary stehen, aber kein Sync sollte erfolgen. Dann auf beide Nodes (Primary zuerst):
Prüfen mit:
Beide Nodes sollten auf Primary stehen, aber kein Sync sollte erfolgen. Dann auf den Primary:
Dann prüfen ob alles läuft:
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