Bright Cluster – HA Setup

  1. Configure failover interface in 1st Head Node
  2. Register license for HA
  3. Prepare HA configuration using command
     $ cmha-setup
  4. Go to Setup menu to prepare configuration
  5. Check Clone Failover for clone instruction
  6. Power-on second head node, let it boot to PXE
  7. Select Rescue in PXE menu
  8. Login as root
  9. Start cloning by calling
     $ /cm/cm-clone-install --failover
  10. The second head node will reboot automatically once completed
  11. Back to primary head node.
  12. In cmha-setup menu, select Finalize.
  13. Verify HA status
     $ cmha status
  14. In cmha-setup menu, configure shared storage.

 

EGO issue in IBM SCF CE

Problem:

[root@pcmce-co68 ~]# egosh resource list
Cannot get host info. Not logged on.

Solution:
Log in to egosh shell (one time only). Default user and password is Admin.

[root@pcmce-co68 ~]# egosh user logon
user account: Admin
password:
Logged on successfully
[root@pcmce-co68 ~]# egosh resource list
NAME status mem swp tmp ut it pg r1m r15s r15m ls
pcmce-c* ok 827M 1516M 69G 7% 258 3.1 0.2 3.3 0.7 1

 

Disable Serial Console Redirection in xCAT

PXE boot config:

"... console=tty0 console=ttyS0,115200 ..."

Note: serial console redirection is managed by hardware profile.

To check hardware profile:

$ tabdump nodehm
#node,power,mgt,cons,termserver,termport,conserver,serialport,serialspeed,serialflow,getmac,cmdmapping,consoleondemand,comments,disable
"__HardwareProfile_IPMI",,"ipmi",,,,,,,,,"/opt/pcm/etc/hwmgt/mappings/HWCmdMapping_ipmi.xml",,,
"__HardwareProfile_IBM_Flex_System_x",,"ipmi",,,,,"0","115200","hard",,"/opt/pcm/etc/hwmgt/mappings/HWCmdMapping_flex_x.xml",,,
"__HardwareProfile_IBM_System_x_M4",,"ipmi",,,,,"0","115200","hard",,"/opt/pcm/etc/hwmgt/mappings/HWCmdMapping_rackmount_x.xml",,,
"__HardwareProfile_IBM_iDataPlex_M4",,"ipmi",,,,,"0","115200","hard",,"/opt/pcm/etc/hwmgt/mappings/HWCmdMapping_rackmount_x.xml",,,
"__HardwareProfile_IBM_NeXtScale_M4",,"ipmi",,,,,"0","115200","hard",,"/opt/pcm/etc/hwmgt/mappings/HWCmdMapping_nextscale_x.xml",,,
"__Chassis_IBM_Flex_chassis",,"blade",,,,,,,,,,,,

To disable: clear the entries of serialport, serialspeed and serialflow columns

$ chdef -t group -o __HardwareProfile_IBM_Flex_System_x serialport= serialspeed= serialflow=