On Tue, 7 May 2019 at 04:06, wuzhouhui wuzhouhui14@mails.ucas.ac.cn wrote:
Hi,
Recently, I encountered a interesting phenomenon that CentOS 6.3 running as normal even if I (my colleague, actually) installed a kernel that build for CentOS 7.x (e.g. kernel-3.10.0-327.el7.x86_64.rpm).
I found kernel is mismatch accidentally when I using "uname -r" to check kernel version. So my question is what the harmness we will get if I install a el7 rpm into a el6 system?
Many CentOS-7 packages will not install because they will need dependencies that the EL-6 does not have. The kernel is different because it is mostly self-contained and meant to be parallel installed. In most cases, it should result in an unbootable system because the boot is going to be dracut+systemd bits and the EL-6 has none of that.
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