CentOS7修改默认内核启动顺序
查看已经安装的内核。
cat /boot/grub2/grub.cfg |grep menuentry
显示结果：
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
menuentry_id_option=""
export menuentry_id_option
menuentry 'CentOS Linux (4.4.155-1.el7.elrepo.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-693.el7.x86_64-advanced-df947c97-b37e-4a32-b789-96110fda3b2c' {
menuentry 'CentOS Linux (3.10.0-862.11.6.el7.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-693.el7.x86_64-advanced-df947c97-b37e-4a32-b789-96110fda3b2c' {
menuentry 'CentOS Linux (3.10.0-693.el7.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-693.el7.x86_64-advanced-df947c97-b37e-4a32-b789-96110fda3b2c' {
menuentry 'CentOS Linux (0-rescue-837e7d251faf4b498c2ddafe8fcd71c7) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-0-rescue-837e7d251faf4b498c2ddafe8fcd71c7-advanced-df947c97-b37e-4a32-b789-96110fda3b2c' {
2. 修改默认启动内核。
grub2-set-default "CentOS Linux (4.4.155-1.el7.elrepo.x86_64) 7 (Core)"
3. 查看是否修改成功。
grub2-editenv list
显示结果：
saved_entry=CentOS Linux (4.4.155-1.el7.elrepo.x86_64) 7 (Core)
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