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Chapter 4: Serial Port, Device and User Configuration
4.6.3 Configure the slaves and their serial ports
You can now begin setting up the Slaves and configuring Slave serial ports from the Master Console Server:
• SelectSerial & Network: Cascaded PortsontheMaster’sManagementConsole:
• ToaddclusteringsupportselectAdd Slave
Note: You will be prevented from adding any Slaves until you have automatically or manually generated SSH keys
To define and configure a Slave:
• Entertheremote IP Address (orDNSName)fortheSlaveConsoleServer
• EnterabriefDescription and a short LabelfortheSlave(useaconventionherethatenableseffectivemanagementof
largenetworksofclusteredConsoleServersandtheconnecteddevices)
• EnterthefullnumberofserialportsontheSlaveunitinNumber of Ports
• ClickApply. This will establish the SSH tunnel between the Master and the new Slave
The Serial & Network: Cascaded Ports menu displays all the Slaves and the port numbers that have been allocated on the
Master.IftheMasterConsoleServerhas16portsofitsownthenports1-16arepre-allocatedtotheMaster,sotherst
Slave added will be assigned port number 17 onwards.
OnceyouhaveaddedalltheSlaveConsoleServers,theSlaveserialportsandtheconnecteddevicesarecongurableand
accessiblefromtheMaster’sManagementConsolemenu;andaccessiblethroughtheMaster’sIPaddresse.g.
• SelecttheappropriateSerial & Network: Serial Port and Edit to configure the serial ports on the Slave
• SelecttheappropriateSerial & Network: Users & Groups to add new users with access privileges to the Slave serial
ports(ortoextendexistingusersaccessprivileges)
• SelecttheappropriateSerial & Network: Trusted Networks to specify network addresses that can access nominated
Slave serial ports
• SelecttheappropriateAlerts & Logging: AlertstocongureSlaveportConnection,StateChangeorPatternMatchalerts
• ThecongurationchangesmadeontheMasterarepropagatedouttoalltheSlaveswhenyouclickApply.
4.6.4 Managing the slaves
The Master is in control of the Slave serial ports. So for example if change a User access privileges or edit any serial
portsettingontheMaster,theupdatedcongurationleswillbesentouttoeachSlaveinparallel.EachSlavewillthen
automaticallymakechangestotheirlocalcongurations(andonlymakethosechangesthatrelatetoitsparticularserial
ports).
YoucanstillusethelocalSlaveManagementConsoletochangethesettingsonanySlaveserialport(suchasalterthebaud
rates).HoweverthesechangeswillbeoverwrittennexttimetheMastersendsoutacongurationleupdate.
AlsowhiletheMasterisincontrolofallSlaveserialportrelatedfunctions,itisnotmasterovertheSlavenetworkhost
connections or over the Slave Console Server system itself.
SoSlavefunctionssuchasIP,SMTP&SNMPSettings,Date&Time,DHCPservermustbemanagedbyaccessingeachSlave
directly and these functions are not over written when configuration changes are propagated from the Master. Similarly the
SlavesNetworkHostandIPMIsettingshavetobeconguredateachSlave.
AlsotheMaster’sManagementConsoleprovidesaconsolidatedviewofthesettingsforitsownandalltheSlave’sserialports,
however the Master does not provide a fully consolidated view. For example if you want to find out who's logged in to cascaded
serialportsfromthemaster,you’llseethatStatus: Active UsersonlydisplaysthoseusersactiveontheMaster’sports,soyou
may need to write custom scripts to provide this view. This is covered in Chapter 11.