Vcenter and ESX and ESXi logfiles

Vcenter Log files :
-------------------
Windows 2008 C:\programdata\vmware\vmware Virtualcenter\Logs
Windows 2003 C:\Documents and settings\All Users\Application Data\Vmware\VirtualCenter\logs
Size,location,name and rotation can be manipulated with vpxd.cfg (5MB)file.

Vmware KB Article :
1021804

ESX log Files:-
---------------
/var/log/vmkernel  ---Vkernel messages
/var/log/vmkwarning
/var/log/vmksummary
/var/log/vmware/hostd.log--ESX service
/var/log/messages ---Service Console
/var/log/vmware/vpx/vpxa.log---vSphere Client Agent
/var/log/vmware/aam/vmware_<hstname>-xxx.log---HA
/var/log/vmkiscsid.og---iscsi
/var/log/boot-logs/sysboot.log ---boot log

Vmware KB Article:
1021800

ESXi log files :-
-----------------
/var/log/vmware/hostd.log--ESXi service
/var/log/messages ---Combinaton of Vkernel messages ,Hostd,Vmkwarning
/var/log/vmware/vpx/vpxa.log---vSphere Client Agent
/var/log/vmware/aam/vmware_<hstname>-xxx.log---HA
/var/log/boot-logs/sysboot.log ---boot log
ESXi logs vanish when reboot or poweroff.
Vmware KB Article:
1021801

Configuring Log rotation for the log files :
--------------------------------------------
/etc/logrotate.conf
hostd.log
/etc/vmware/hostd/config.xml
vpxa.log
/etc/opt/vmware/vpxa/vpxa.cfg


Acessing the logs:
-------------------
Vsphre clinet
SSH
DCUI with ESXi service Console