documents/update_kernel.md

做盘步骤

所准备的工具和镜像：

mkiso-4.2
rocky4.2.32-sqlproxy-2017-06-09.iso
rocky6.0.42.41-x86_64-security-20170815.iso

修改光盘环境

在root用户下进行操作

1. 挂载rocky4.2.32-sqlproxy-2017-06-09.iso

命令：

	mount rocky4.2.32-sqlproxy-2017-06-09.iso /mnt -oloop  

2. 将/mnt 下的所有文件复制到电脑的cd目录里

命令：

	cp /mnt/. /home/lcliang/cd -R  

3. 挂载rocky6.0.42.41-x86_64-security-20170815.iso

命令：

	mount rocky6.0.42.41-x86_64-security-20170815.iso /home/lcliang/ce -oloop  

4. 把所要升级的内核修改文件复制到对应的目录下

所需要修改的文件(lib/modules,boot/isolinux)

命令：

   rm /home/lcliang/cd/lib/modules -r  

   cp /home/lcliang/ce/lib/modules /home/lcliang/cd/lib/ -R  

   rm /home/lcliang/cd/boot/isolinux/initrd.img-2.6.32.41-Rocky4.2-x86_64

   cp /home/lcliang/ce/boot/isolinux/initrd.img-2.6.32.41-Rocky4.2-x86_64 /home/lcliang/cd/boot/isolinux/  

   rm /home/lcliang/ce/boot/isolinux/vmlinuz-2.6.32.41-Rocky4.2-x86_64
   
   cp /home/lcliang/ce/boot/isolinux/vmlinuz-2.6.32.41-Rocky4.2-x86_64 /home/lcliang/cd/boot/isolinux/  

注意：要使修改的光盘的文件名称与之相对应。

修改光盘环境目录中的Rocky里的modules和kernel的的相关文件（相当于修改安装后的系统的内核和驱动模块）

1. 在虚拟机安装rocky6.0.42.41-x86_64-security-20170815.iso系统

2. 将所要升级的内核修改文件复制到对应的目录下(以下的scp命令都是个在6.0.42.41系统中执行)

所需要修改的文件（Rocky/modules,Rocky/kernel）

命令：

   rm /home/lcliang/cd/Rocky/modules -r

   scp -r /lib/modules/* lcliang@172.16.0.67:/home/lcliang/cd/Rocky/modules  

   rm build source 删除cd/Rocky/modules/2.6.32.41-Rocky4.2-x86_64目录下的build source  

   rm /home/lcliang/cd/Rocky/kernels/initrd.img-2.6.32.41-Rocky4.2-x86_64

   scp /boot/initrd.img-2.6.32.41-Rocky4.2-x86_64 lcliang@172.16.0.67:/home/lcliang/cd/Rocky/kernels  

   rm /home/lcliang/cd/Rocky/kernels/vmlinuz-2.6.32.41-Rocky4.2-x86_64

   scp /boot/vmlinuz-2.6.32.41-Rocky4.2-x86_64 lcliang@172.16.0.67:/home/lcliang/cd/Rocky/kernels

   rm /home/lcliang/cd/Rocky/kernels/config-2.6.32.41-Rocky4.2-x86_64

   scp /boot/config-2.6.32.41-Rocky4.2-x86_64 lcliang@172.16.0.67:/home/lcliang/cd/Rocky/kernels  

   rm /home/lcliang/cd/Rocky/kernels/System.map-2.6.32.41-Rocky4.2-x86_64

   scp /boot/System.map-2.6.32.41-Rocky4.2-x86_64 lcliang@172.16.0.67:/home/lcliang/cd/Rocky/kernels  

   rm /home/lcliang/cd/Rocky/kernels/kernel_src_info

   scp /boot/kernel_src_info lcliang@172.16.0.67:/home/lcliang/cd/Rocky/kernels

更改版本

进入到cd目录下

1. vi tag 更改在cd目录下tag

2. vi etc/issue 更改在cd/etc目录下issue

3. vi usr/lib/setup/issue 更改在cd/usr/lib/setup/目录下issue

生成镜像文件

1. 使用mk_iso_4.2.sh脚本根据目录生成镜像文件

   修改xorriso的权限，命令：

   chmod +x xorriso  

移动xorriso到/opt/下，命令

   cp xorriso /opt/  

生成镜像文件

   mk_iso_4.2.sh /home/lcliang/cd/ rocky4.2.32-sqlproxy-2017-08-25.iso  

如果缺少依赖文件可使用apt-file工具来查找
apt-get install apt-file
apt-file update
apt-file search XXX文件 查找文件属于那个包
apt-get install 安装包
apt-file list 安装包
根据要求修改mk_iso_4.2.sh