使用containerd从0搭建k8s(kubernetes)集群
准备环境准备两台服务器节点，如果需要安装虚拟机，可以参考《wmware和centos安装过程》
机器名IP角色CPU内存centos01192.168.109.130master4核2Gcentos02192.168.109.131node4核2G设置主机名，所有节点都执行
vim /etc/hosts
#增加
192.168.109.130 centos01
192.168.109.131 centos02关闭防火墙，所有节点都执行
systemctl stop firewalld
systemctl disable firewalld
setenforce 0
vim /etc/selinux/config
#修改SELINUX的值
SELINUX=disabled关闭swap内存，所有节点都执行
swapoff -a
vim /etc/fstab
# 将该行注释掉
#/dev/mapper/cs-swap swap配置网桥，所有节点都执行
1.修改参数
vim /etc/sysctl.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
vm.swappiness = 02.然后，加载如下两个模块，所有节点都执行
modprobe ip_vs_rr
modprobe br_netfilter3.生效配置
# sysctl -p
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
vm.swappiness = 0安装containerd
以下步骤所有节点都执行。
安装
wget https://github.com/containerd/containerd/releases/download/v1.7.2/containerd-1.7.2-linux-amd64.tar.gz
tar Cxzvf /usr/local containerd-1.7.2-linux-amd64.tar.gz修改配置
mkdir /etc/containerd
containerd config default > /etc/containerd/config.toml
vim /etc/containerd/config.toml
#SystemdCgroup的值改为true
SystemdCgroup = true
#由于国内下载不到registry.k8s.io的镜像，修改sandbox_image的值为：
sandbox_image = "registry.aliyuncs.com/google_containers/pause:3.9"启动服务
mkdir -p /usr/local/lib/systemd/system
wget https://raw.githubusercontent.com/containerd/containerd/main/containerd.service
mv containerd.service /usr/local/lib/systemd/system
systemctl daemon-reload
systemctl enable --now containerd验证安装
# ctr version
Client:
Version:v1.7.2
Revision: 0cae528dd6cb557f7201036e9f43420650207b58
Go version: go1.20.4
Server:
Version:v1.7.2
Revision: 0cae528dd6cb557f7201036e9f43420650207b58
UUID: 747cbf1b-17d4-4124-987a-203d8c72de7c安装runc
以下步骤所有节点都执行。
准备文件
wget https://github.com//opencontainers/runc/releases/download/v1.1.7/runc.amd64
chmod +x runc.amd64查找containerd安装时已安装的runc所在的位置
# which runc
/usr/bin/runc替换上一步的结果文件
mv -f runc.amd64 /usr/bin/runc验证安装
# runc -v
runc version 1.1.7
commit: v1.1.7-0-g860f061b
spec: 1.0.2-dev
go: go1.20.3
libseccomp: 2.5.4安装kubernetes
添加阿里云的kubernetes源，所有节点都执行
cat
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