环境准备
- 操作系统:openEuler 22.03
- Docker:26.1.3
- Kubernetes:1.23.5
- Harbor:2.10.0
- 临时关闭swap
swapoff -a
- 可以临时关闭selinux,减少额外配置
setenforce 0
- 关闭防火墙
systemctl stop firewalld
systemctl disable firewalld
- 修改hosts文件 方便查看域名映射
[root@master ~]# cat /etc/hosts
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
{ip} master
- 修改内核参数
modprobe br_netfilter
echo "modprobe br_netfilter" >> /etc/profile
tee /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
#重新加载配置
sysctl -p /etc/sysctl.d/k8s.conf
- 配置k8s的yum源
vim /etc/yum.repos.d/kubernetes.repo
#将以下内容复制进去
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=0
安装Docker
dnf config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# 编辑/etc/yum.repos.d/docker-ce.repo里的 $Release 对应的Centos版本号,本文指定的centos版本号为7
sed -i 's/$releasever/7/g' docker-ce.repo
dnf install -y docker-ce
systemctl start docker
systemctl enable docker
docker -v
# 或使用
docker version
- 修改docker的 /etc/docker/daemon.json文件
设置国内阿里云docker源,地址改为自己在阿里云容器镜像服务申请的地址即可。
设置cgroupdriver为systemd,这步很重要!!!
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://xcjha0pw.mirror.aliyuncs.com"],
"exec-opts": ["native.cgroupdriver=systemd"]
}
EOF
- 修改完成后 重启docker ,使docker与kubelet的cgroup 驱动一致
sudo systemctl daemon-reload
sudo systemctl restart docker
安装k8s
安装三大组件-kubeadm、kubelet、kubectl
kubeadm:用来初始化k8s集群的指令。
kubelet:在集群的每个节点上用来启动 Pod 和容器等。
kubectl:用来与k8s集群通信的命令行工具,查看、创建、更新和删除各种资源。
- 安装kubeadmin、kubelet、kubernetes-master
dnf install -y kubelet-1.23.5 kubeadm-1.23.5 kubectl-1.23.5
# 查看是否安装成功
kubelet --version
kubectl version
kubeadm version
systemctl daemon-reload
systemctl start kubelet
# 设置kubelet开机启动
systemctl enable kubelet
apiserver-advertise-address 请替换成实际环境中的master节点ip地址
kubeadm init --apiserver-advertise-address={ip} --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.23.5 --service-cidr=10.96.0.0/12 --pod-network-cidr=10.244.0.0/16
配置环境变量
# 非root用户请执行
$ mkdir -p $HOME/.kube
$ sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
$ sudo chown $(id -u):$(id -g) $HOME/.kube/config
# root用户直接执行
# 临时生效,重启后失效,不推荐。
$ export KUBECONFIG=/etc/kubernetes/admin.conf
# 永久生效,执行kubeadm reset后再次init也无需再次执行这条命令
$ echo "export KUBECONFIG=/etc/kubernetes/admin.conf" >> ~/.bash_profile
$ source ~/.bash_profile
kubectl get nodes
kubeadm reset --cri-socket=unix:/
wget https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
kubectl apply -f kube-flannel.yml
# 网络不好下载不下来也可以直接复制以下内容新建yml文件执行
---
kind: Namespace
apiVersion: v1
metadata:
name: kube-flannel
labels:
pod-security.kubernetes.io/enforce: privileged
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: flannel
rules:
- apiGroups:
- ""
resources:
- pods
verbs:
- get
- apiGroups:
- ""
resources:
- nodes
verbs:
- list
- watch
- apiGroups:
- ""
resources:
- nodes/status
verbs:
- patch
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: flannel
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: flannel
subjects:
- kind: ServiceAccount
name: flannel
namespace: kube-flannel
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: flannel
namespace: kube-flannel
---
kind: ConfigMap
apiVersion: v1
metadata:
name: kube-flannel-cfg
namespace: kube-flannel
labels:
tier: node
app: flannel
data:
cni-conf.json: |
{
"name": "cbr0",
"cniVersion": "0.3.1",
"plugins": [
{
"type": "flannel",
"delegate": {
"hairpinMode": true,
"isDefaultGateway": true
}
},
{
"type": "portmap",
"capabilities": {
"portMappings": true
}
}
]
}
net-conf.json: |
{
"Network": "10.244.0.0/16",
"Backend": {
"Type": "vxlan"
}
}
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
name: kube-flannel-ds
namespace: kube-flannel
labels:
tier: node
app: flannel
spec:
selector:
matchLabels:
app: flannel
template:
metadata:
labels:
tier: node
app: flannel
spec:
affinity:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: kubernetes.io/os
operator: In
values:
- linux
hostNetwork: true
priorityClassName: system-node-critical
tolerations:
- operator: Exists
effect: NoSchedule
serviceAccountName: flannel
initContainers:
- name: install-cni-plugin
#image: flannelcni/flannel-cni-plugin:v1.1.0 for ppc64le and mips64le (dockerhub limitations may apply)
image: docker.io/rancher/mirrored-flannelcni-flannel-cni-plugin:v1.1.0
command:
- cp
args:
- -f
- /flannel
- /opt/cni/bin/flannel
volumeMounts:
- name: cni-plugin
mountPath: /opt/cni/bin
- name: install-cni
#image: flannelcni/flannel:v0.20.0 for ppc64le and mips64le (dockerhub limitations may apply)
image: docker.io/rancher/mirrored-flannelcni-flannel:v0.20.0
command:
- cp
args:
- -f
- /etc/kube-flannel/cni-conf.json
- /etc/cni/net.d/10-flannel.conflist
volumeMounts:
- name: cni
mountPath: /etc/cni/net.d
- name: flannel-cfg
mountPath: /etc/kube-flannel/
containers:
- name: kube-flannel
#image: flannelcni/flannel:v0.20.0 for ppc64le and mips64le (dockerhub limitations may apply)
image: docker.io/rancher/mirrored-flannelcni-flannel:v0.20.0
command:
- /opt/bin/flanneld
args:
- --ip-masq
- --kube-subnet-mgr
resources:
requests:
cpu: "100m"
memory: "50Mi"
limits:
cpu: "100m"
memory: "50Mi"
securityContext:
privileged: false
capabilities:
add: ["NET_ADMIN", "NET_RAW"]
env:
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
- name: EVENT_QUEUE_DEPTH
value: "5000"
volumeMounts:
- name: run
mountPath: /run/flannel
- name: flannel-cfg
mountPath: /etc/kube-flannel/
- name: xtables-lock
mountPath: /run/xtables.lock
volumes:
- name: run
hostPath:
path: /run/flannel
- name: cni-plugin
hostPath:
path: /opt/cni/bin
- name: cni
hostPath:
path: /etc/cni/net.d
- name: flannel-cfg
configMap:
name: kube-flannel-cfg
- name: xtables-lock
hostPath:
path: /run/xtables.lock
type: FileOrCreate
- flannel 的pod启动正常后,如果节点还是Notready,需要安装kubernetes-cni
dnf install -y kubernetes-cni --allowerasing
安装harbor
dnf install -y docker-compose
dnf install -y openssl
#wget下载不了的话,下载后上传到服务器
wget https://github.com/goharbor/harbor/releases/download/v2.10.0/harbor-offline-installer-v2.10.0.tgz
tar -xzvf harbor-offline-installer-v2.10.0.tgz
#进入目录
cd ./harbor
# 创建文件夹
mkdir certs
# 生成秘钥
openssl genrsa -out ca.key 4096
# 证书秘钥与IP绑定 ip填写你自己的harbor安装位置服务器的ip
openssl req -x509 -new -nodes -sha512 -days 3650 \
-subj "/C=CN/ST=Beijing/L=Beijing/O=example/OU=Personal/CN={ip}" \
-key ca.key \
-out ca.crt
cp harbor.yml.tmpl harbor.yml
vi harbor.yml
# 修改参数
hostname:域名修改为自己要安装harbor的服务器的ip
http端口:修改为8800
https端口:修改为8443
# 证书位置修改
certificate: 证书路径修改为/harbor/certs/ca.crt
private_key: 秘钥路径修改为/harbor/certs/ca.key
harbor_admin_password: 默认Harbor密码,不修改,就用默认的Harbor12345
data_value: 修改为/data/harbor
./prepare
./install.sh
docker-compose -f docker-compose.yml ps