When you add a kernel to Walrus, you bundle the kernel file, upload the file to a bucket in Walrus that you name, and then register the kernel with Eucalyptus.
To add a kernel to Walrus:
Use the following three commands:
euca-bundle-image -i <kernel_file> --kernel true --arch <architecture>
euca-upload-bundle -b <kernel_bucket> -m /tmp/<kernel_file>.manifest.xml
euca-register <kernel_bucket>/<kernel_file>.manifest.xml -a x86_64 -n mynewkernel
For example:
euca-bundle-image -i euca-fedora-10-x86_64/xen-kernel/vmlinuz-2.6.27.21-0.1-xen --kernel true --arch x86_64
...
Generating manifest /tmp/vmlinuz-2.6.27.21-0.1-xen.manifest.xml
euca-upload-bundle -b example_kernel_bucket -m /tmp/vmlinuz-2.6.27.21-0.1-xen.manifest.xml
...
Uploaded image as example_kernel_bucket/vmlinuz-2.6.27.21-0.1-xen.manifest.xml
euca-register example_kernel_bucket/vmlinuz-2.6.27.21-0.1-xen.manifest.xml -a x86_64 -n mynewkernel
IMAGE eki-XXXXXXXX
Where the returned value eki-XXXXXXXX is the unique ID of the registered kernel image.