mirror of https://github.com/easzlab/kubeasz.git
46 lines
1.8 KiB
Markdown
46 lines
1.8 KiB
Markdown
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# Linux Kernel 升级
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k8s,docker,cilium等很多功能、特性需要较新的linux内核支持,所以有必要在集群部署前对内核进行升级;CentOS7 和 Ubuntu16.04可以很方便的完成内核升级。
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## CentOS7
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``` bash
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# 载入公钥
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rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
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# 安装ELRepo
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rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
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# 载入elrepo-kernel元数据
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yum --disablerepo=\* --enablerepo=elrepo-kernel repolist
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# 查看可用的rpm包
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yum --disablerepo=\* --enablerepo=elrepo-kernel list kernel*
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# 安装最新版本的kernel
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yum --disablerepo=\* --enablerepo=elrepo-kernel install -y kernel-ml.x86_64
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# 删除旧版本工具包
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yum remove kernel-tools-libs.x86_64 kernel-tools.x86_64 -y
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# 安装新版本工具包
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yum --disablerepo=\* --enablerepo=elrepo-kernel install -y kernel-ml-tools.x86_64
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#查看默认启动顺序
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awk -F\' '$1=="menuentry " {print $2}' /etc/grub2.cfg
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CentOS Linux (4.4.4-1.el7.elrepo.x86_64) 7 (Core)
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CentOS Linux (3.10.0-327.10.1.el7.x86_64) 7 (Core)
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CentOS Linux (0-rescue-c52097a1078c403da03b8eddeac5080b) 7 (Core)
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#默认启动的顺序是从0开始,新内核是从头插入(目前位置在0,而4.4.4的是在1),所以需要选择0。
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grub2-set-default 0
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#重启并检查
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reboot
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```
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## Ubuntu16.04
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``` bash
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打开 http://kernel.ubuntu.com/~kernel-ppa/mainline/ 并选择列表中选择你需要的版本(以4.16.3为例)。
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接下来,根据你的系统架构下载 如下.deb 文件:
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Build for amd64 succeeded (see BUILD.LOG.amd64):
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linux-headers-4.16.3-041603_4.16.3-041603.201804190730_all.deb
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linux-headers-4.16.3-041603-generic_4.16.3-041603.201804190730_amd64.deb
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linux-image-4.16.3-041603-generic_4.16.3-041603.201804190730_amd64.deb
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#安装后重启即可
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$ sudo dpkg -i *.deb
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```
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