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本文分享自华为云社区《openEuler部署Kubernetes 1.29.4版本集群》，作者：江晚正愁余。
一、Kubernetes集群节点准备
1.1 主机操作系统说明
序号 操作系统及版本 备注
1 CentOS7u9或 OpenEuler2203
1.2 主机硬件配置说明
需求 CPU 内存 硬盘 角色 主机名
值 8C 8G 1024GB master k8s-master01
值 8C 16G 1024GB worker(node) k8s-worker01
值 8C 16G 1024GB worker(node) k8s-worker02
1.3 主机配置
1.3.1 主机名配置
由于本次使用3台主机完成kubernetes集群部署，其中1台为master节点,名称为k8s-master01;其中2台为worker节点，名称分别为：k8s-worker01及k8s-worker02
# master节点 hostnamectl set-hostname k8s-master01 #worker01节点 hostnamectl set-hostname k8s-worker01 #worker02节点 hostnamectl set-hostname k8s-worker02
1.3.2 IP地址,名称解析与互信
#IP配置这里不再讲解
#下面是名称解析配置
[root@k8s-master01 ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.0.11 k8s-master01
192.168.0.12 k8s-worker01
192.168.0.13 k8s-worker02
#主机互信配置
[root@k8s-master01 ~]# ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa
Your public key has been saved in /root/.ssh/id_rsa.pub
The key fingerprint is:
SHA256:Rr6W4rdnY350fzMeszeWFR/jUJt0VOZ3yZECp5VJJQA root@k8s-master01
The key's randomart image is:
+---[RSA 3072]----+
| E.o+=++*|
| ++o*+|
| . . +oB|
| o . *o|
| S o =|
| . o . ..o|
| . + . . +o|
| . o. = . *B|
| ...*.o oo*|
+----[SHA256]-----+
[root@k8s-master01 ~]# for i in {11..13};do ssh-copy-id 192.168.0.${i};done
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
The authenticity of host '192.168.0.11 (192.168.0.11)' can't be established.
ED25519 key fingerprint is SHA256:s2R582xDIla4wyNozHa/HEmRR7LOU4WAciEcAw57U/Q.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
Authorized users only. All activities may be monitored and reported.
root@192.168.0.11's password:
Number of key(s) added: 1
1.3.4 防火墙配置
所有主机均需要操作。
关闭现有防火墙firewalld
# systemctl disable firewalld # systemctl stop firewalld
或
systemctl disable --now firewalld
查看firewalld状态
# firewall-cmd --state not running
参考运行命令：
[root@k8s-master01 ~]# for i in {11..13};do ssh 192.168.0.${i} 'systemctl disable --now firewalld' ;done
Authorized users only. All activities may be monitored and reported.
Authorized users only. All activities may be monitored and reported.
Authorized users only. All activities may be monitored and reported.
[root@k8s-master01 ~]# for i in {11..13};do ssh 192.168.0.${i} 'firewall-cmd --state' ;done
Authorized users only. All activities may be monitored and reported.
not running
Authorized users only. All activities may be monitored and reported.
not running
Authorized users only. All activities may be monitored and reported.
not running
1.3.5 SELINUX配置
所有主机均需要操作。修改SELinux配置需要重启操作系统。
# sed -ri 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
# sestatus
参考运行命令：
[root@k8s-master01 ~]# for i in {11..13};do ssh 192.168.0.${i} 'sed -ri 's/SELINU服务器托管X=enforcing/SELINUX=disabled/' /etc/selinux/config' ;done
Authorized users only. All activities may be monitored and reported.
Authorized users only. All activities may be monitored and reported.
Authorized users only. All activities may be monitored and reported.
[root@k8s-master01 ~]# for i in {11..13};do ssh 192.168.0.${i} 'sestatus' ;done
Authorized users only. All activities may be monitored and reported.
SELinux status: disabled
Authorized users only. All activities may be monitored and reported.
SELinux status: disabled
Authorized users only. All activities may be monitored and reported.
SELinux status: disabled
1.3.6 时间同步配置
所有主机均需要操作。最小化安装系统需要安装ntpdate软件。
# crontab -l
0 */1 * * * /usr/sbin/ntpdate time1.aliyun.com
for i in {11..13};do ssh 192.168.0.${i} ' echo '0 */1 * * * /usr/sbin/ntpdate time1.aliyun.com' >> /etc/crontab' ;done
#设置上海时区，东八区
timedatectl set-timezone Asia/Shanghai
for i in {11..13};do ssh 192.168.0.${i} ' timedatectl set-timezone Asia/Shanghai' ;done
1.3.7 升级操作系统内核
centos系统需要升级内容，具体百度，OpenEuler2203不需要
1.3.8 配置内核路由转发及网桥过滤
所有主机均需要操作。
添加网桥过滤及内核转发配置文件
sed -i 's/net.ipv4.ip_forward=0/net.ipv4.ip_forward=1/g' /etc/sysctl.conf # cat > /etc/sysctl.d/k8s.conf1.3.9 安装ipset及ipvsadm
所有主机均需要操作。
安装ipset及ipvsadm # yum -y install ipset ipvsadm 配置ipvsadm模块加载方式 添加需要加载的模块 # cat > /etc/sysconfig/modules/ipvs.modules1.3.10 关闭SWAP分区
修改完成后需要重启操作系统，如不重启，可临时关闭，命令为swapoff -a
永远关闭swap分区，需要重启操作系统
# cat /etc/fstab ...... # /dev/mapper/centos-swap swap swap defaults 0 0 在上一行中行首添加#
二、containerd容器环境安装
2.1 安装containerd环境包
所有主机均需要操作。
# 打包的文件 for i in {11..13};do ssh 192.168.0.${i} ' wget https://blog-source-mkt.oss-cn-chengdu.aliyuncs.com/resources/k8s/kubeadm%20init/k8s1.29.tar.gz'; done # 解压containerd并安装 for i in {11..13};do ssh 192.168.0.${i} ' tar -zxvf /root/k8s1.29.tar.gz'; done for i in {11..13};do ssh 192.168.0.${i} ' tar -zxvf /root/workdir/containerd-1.7.11-linux-amd64.tar.gz && mv /root/bin/* /usr/local/bin/ && rm -rf /root/bin'; done # 创建服务，所有主机都要操作 cat /usr/lib/systemd/system/containerd.service [Unit] Description=containerd container runtime Documentation=https://containerd.io After=network.target local-fs.target [Service] ExecStartPre=-/sbin/modprobe overlay ExecStart=/usr/local/bin/containerd Type=notify Delegate=yes KillMode=process Restart=always RestartSec=5 # Having non-zero Limit*s causes performance problems due to accounting overhead # in the kernel. We recommend using cgroups to do container-local accounting. LimitNPROC=infinity LimitCORE=infinity # Comment TasksMax if your systemd version does not supports it. # Only systemd 226 and above support this version. TasksMax=infinity OOMScoreAdjust=-999 [Install] WantedBy=multi-user.target EOF # 启动容器服务 for i in {11..13};do ssh 192.168.0.${i} 'systemctl daemon-reload && systemctl enable --now containerd '; done # 安装runc for i in {11..13};do ssh 192.168.0.${i} 'install -m 755 /root/workdir/runc.amd64 /usr/local/sbin/runc '; done # 安装cni插件 for i in {11..13};do ssh 192.168.0.${i} 'mkdir -p /opt/cni/bin && tar -xzvf /root/workdir/cni-plugins-linux-amd64-v1.4.0.tgz -C /opt/cni/bin/ '; done # 生成容器配置文件并修改 for i in {11..13};do ssh 192.168.0.${i} 'mkdir -p /etc/containerd && containerd config default | sudo tee /etc/containerd/config.toml '; done # 修改沙箱镜像，所有主机都要操作 sed -i 's#sandbox_image = "registry.k8s.io/pause:.*"#sandbox_image = "registry.aliyuncs.com/google_containers/pause:3.9"#' /etc/containerd/config.toml #重启containerd systemctl restart containerd
2.2 master主机安装k8s
# 配置k8s v2.19源，所有节点均要安装 cat /etc/sysconfig/kubelet systemctl enable kubelet #注意，kubelet不要启动，kubeadm会自动启动，如果已启动，安装会报错。 # 安装k8s命令，主master节点执行，这里只有1.29.4版本镜像 kubeadm init --apiserver-advertise-address=192.168.0.11 --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.29.4 --service-cidr=10.96.0.0/12 --pod-network-cidr=10.224.0.0/16 # 最后执行以下命令 mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config export KUBECONFIG=/etc/kubernetes/admin.conf
2.3 安装calico网络插件
kubectl apply -f https://raw.githubusercontent.com/projectcalico/calico/v3.26.1/manifests/calico.yaml # 最后查看节点与pod支行情况 kubectl get nodes kubectl get pods -A点击关注，第一时间了解华为云新鲜技术~
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