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Configure Serial Console Access on CentOS 5

Today I built some virtual machines on a KVM platform (Ubuntu 10.04 Server as the host). The three virtual machines are CentOS 5, i386 and will be used primarily for internal application testing. One of the requirements for using these machines in a virtual environment was configuring back-end console access from the host. The virtual machine management tools (virsh) provide custom commands to console into your guest machines, but the guest machines need to be configured to output to the proper console. This article outlines what customizations I made to the CentOS 5 virtual machines in order to console into them from the host using ‘virsh console ’ GRUB The first modifications that I needed to make were in GRUB. On CentOS the GRUB config file can be found at: /boot/grub/menu.lst. Below you’ll find the changes I made: default=0<br /> timeout=5<br /> #splashimage=(hd0,0)/grub/splash.xpm.gz<br /> serial --unit=0 --speed=115200<br /> terminal --timeout=10 console serial<br /> hiddenmenu Read more