linux热补丁工具kpatch安装

女爷i 2022-06-01 07:41 609阅读 0赞

**安装环境是CentOS 7，内核版本为：3.10.0-693.el7.x86\_64**

## 安装 ##

UNAME=$(uname -r)
    yum install gcc kernel-devel-${UNAME%.*} elfutils elfutils-devel
    
    yum install rpmdevtools pesign yum-utils zlib-devel \
      binutils-devel newt-devel python-devel perl-ExtUtils-Embed \
      audit-libs audit-libs-devel numactl-devel pciutils-devel bison
    
    # enable CentOS 7 debug repo
    yum-config-manager --enable debug
    
    yum-builddep kernel-${UNAME%.*}
    debuginfo-install kernel-${UNAME%.*}
    
    以下为选择安装：
    # optional, but highly recommended - enable EPEL 7
    yum install ccache
    ccache --max-size=5G
    
    # optional, for kpatch-test
    yum install patchutils

以上基础工具安装完成之后，下载kpatch，编译，安装：

git clone https://github.com/dynup/kpatch.git
    cd kpatch
    make
    make install

make过程中，若出现：make: *\** /lib/modules/3.10.0-693.el7.x86\_64/build: 没有那个文件或目录  
解决方案参见：[http://blog.csdn.net/u012343297/article/details/79141878][http_blog.csdn.net_u012343297_article_details_79141878]

其他linux distribution中kpatch安装，详见[https://github.com/dynup/kpatch][https_github.com_dynup_kpatch]

## 测试 ##

使用kpatch自带的testmod测试：

cd testmod
    make

![这里写图片描述][SouthEast]  
可以看见已经生成ko文件

kpatch install testmod.ko
    kpatch list

![这里写图片描述][SouthEast 1]

从kpatch list中我们可以看见已经安装的patch module

测试完成，卸载testmod

kpatch uninstall testmod.ko

[http_blog.csdn.net_u012343297_article_details_79141878]: http://blog.csdn.net/u012343297/article/details/79141878
[https_github.com_dynup_kpatch]: https://github.com/dynup/kpatch
[SouthEast]: /images/20220601/e6ed52f726f84779a36e7c26bd02ad07.png
[SouthEast 1]: /images/20220601/6dbb0f747b9049aba015f2a3df7e0b49.png