View kernel boot order settings default boot kernel

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Uname-r

Viewing the default boot orderawk-f\' '$1=="Menuentry"{print $2}'/etc/grub2.cfgCentOS Linux (3.18.3-1. el7.elrepo.x86_64)7(Core) CentOS Linux, with Linux3.10.0-123. El7.x86_64centos Linux, with Linux0-rescue-893B160E363B4EC7834719A7F06E67CF Default boot order is starting from 0, but our new kernel is inserted from the beginning (the current position in 0, and 3.10 is in 1), so you need to select 0, if you want to take effect the latest kernel, need grub2-set-default0

View kernel boot order settings default boot kernel