今天我正在运行一些yum更新,并希望通过确保我有一个新的内核来验证一切都很顺利.令我惊讶的是,我注意到CentOS仍在运行2.6.32-431.5.1.el6.x86_64,即使它看起来好像已经安装了2.6.32-431.23.3.el6.
实际上2.6.32-431.23.3.el6显示在/etc/grub.conf中,但不在upstart引导选项中.有什么想法吗？
在更新日志中,它说：
---> Package kernel-firmware.noarch 0:2.6.32-431.5.1.el6 will be updated ---> Package kernel-firmware.noarch 0:2.6.32-431.23.3.el6 will be an update
这可能是原因吗？ “将是一个更新”是什么意思？
我的/etc/grub.conf：
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/,eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/mapper/VolGroup00-root
# initrd /initrd-[generic-]version.img
#boot=/dev/vda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
password --encrypted $1$auui(i$sODM4ni/Zts9IlMWu.wWF/
title CentOS (2.6.32-431.23.3.el6.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.32-431.23.3.el6.x86_64 ro root=/dev/mapper/VolGroup00-root rd_NO_LUKS LANG=en_US.UTF-8 KEYBOARDTYPE=pc KEYTABLE=sv-latin1 rd_NO_MD rd_LVM_LV=VolGroup00/swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=VolGroup00/root rd_NO_DM rhgb quiet rhgb quiet audit=1
initrd /initramfs-2.6.32-431.23.3.el6.x86_64.img
title CentOS (2.6.32-431.5.1.el6.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.32-431.5.1.el6.x86_64 ro root=/dev/mapper/VolGroup00-root rd_NO_LUKS LANG=en_US.UTF-8 KEYBOARDTYPE=pc KEYTABLE=sv-latin1 rd_NO_MD rd_LVM_LV=VolGroup00/swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=VolGroup00/root rd_NO_DM rhgb quiet rhgb quiet audit=1
initrd /initramfs-2.6.32-431.5.1.el6.x86_64.img
title CentOS (2.6.32-431.el6.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.32-431.el6.x86_64 ro root=/dev/mapper/VolGroup00-root rd_NO_LUKS LANG=en_US.UTF-8 KEYBOARDTYPE=pc KEYTABLE=sv-latin1 rd_NO_MD rd_LVM_LV=VolGroup00/swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=VolGroup00/root rd_NO_DM rhgb quiet rhgb quiet audit=1
initrd /initramfs-2.6.32-431.el6.x86_64.img
发现问题…显然CentOS 6没有正确地将/etc/grub.conf与/boot/grub/grub.conf同步,所以/boot/grub/grub.conf在启动时读取.修正：
rm /boot/grub/grub.conf mv /etc/grub.conf /boot/grub/ ln -s /boot/grub/grub.conf /etc/grub.conf
