kubeadm安装k8s1.31.x
底层走containerd容器
操作系统:openEuler-24.03
主机名:cat /etc/hosts
主机3台
192.168.80.54 lyc-80-54
192.168.80.55 lyc-80-55
192.168.80.56 lyc-80-56
一、系统初始化【3台全执行】
1、关闭防火墙
systemctl stop firewalld
systemctl disable firewalld
2、关闭selinux
vim /etc/selinux/config
将SELINUX=enforcing改为SELINUX=disabled
3、修改网络IP
vim /etc/sysconfig/network-scripts/ifcfg-ens33
4、修改hosts文件
vim /etc/hosts
5、修改欧拉24.03源
修改openeuler 22.03x64 的源
cd /etc/yum.repos.d/
cp openEuler.repo openEuler.repo.bak
vim openEuler.repo
-------------
[OS]
name=OS
baseurl=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/OS/$basearch/
enabled=1
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/OS/$basearch/RPM-GPG-KEY-openEuler
[everything]
name=everything
baseurl=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/everything/$basearch/
enabled=1
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/everything/$basearch/RPM-GPG-KEY-openEuler
[EPOL]
name=EPOL
baseurl=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/EPOL/main/$basearch/
enabled=1
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/OS/$basearch/RPM-GPG-KEY-openEuler
[debuginfo]
name=debuginfo
baseurl=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/debuginfo/$basearch/
enabled=1
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/debuginfo/$basearch/RPM-GPG-KEY-openEuler
[source]
name=source
baseurl=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/source/
enabled=1
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/source/RPM-GPG-KEY-openEuler
[update]
name=update
baseurl=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/update/$basearch/
enabled=1
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/OS/$basearch/RPM-GPG-KEY-openEuler
[update-source]
name=update-source
baseurl=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/update/source/
enabled=1
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/openeuler/openEuler-22.03-LTS-SP2/source/RPM-GPG-KEY-openEuler
---------------
yum clean all
yum makecache
6、安装Epel
【可以不做】
1、备份配置文件:
cp -a /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.backup
如果不存在文件epel.repo
cd /etc/yum.repos.d/
touch epel.repo
2、修改epel.repo文件,取消baseurl开头的行的注释,并增加mirrorlist开头的行的注释。
将文件中的
http://download.fedoraproject.org/pub替换成https://mirrors.huaweicloud.com,
可以参考如下命令:
sed -i "s/#baseurl/baseurl/g" /etc/yum.repos.d/epel.repo
sed -i "s/metalink/#metalink/g" /etc/yum.repos.d/epel.repo
sed -i "s@https?://download.fedoraproject.org/pub@https://mirrors.huaweicloud.com@g" /etc/yum.repos.d/epel.repo
3、执行以下命令更新:
yum update
7、时间同步
sudo yum install chrony
vim /etc/chrony.conf
-----------------------
添加同步服务器
server ntp1.aliyun.com iburst
server ntp.aliyun.com iburst
stratumweight 0
driftfile /var/lib/chrony/drift
rtcsync
makestep 10 3
bindcmdaddress 127.0.0.1
bindcmdaddress ::1
keyfile /etc/chrony.keys
commandkey 1
generatecommandkey
logchange 0.5
logdir /var/log/chrony
----------------------
ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
echo 'Asia/Shanghai' > /etc/timezone
chkconfig chronyd on
启动系统服务chronyd,并设为开机自启
systemctl restart chronyd #重启校时服务
systemctl enable chronyd #开机自启
输入date 查看时间
timedatectl ------查看2个yes,表示同步成功
8、关闭swap
swapoff -a
sed -ri 's/.*swap.*/#&/' /etc/fstab
查看关闭状态
cat /etc/fstab
查看swap服务
yum install htop
htop
9、开放网络规则
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -F
iptables -L -n
查看规则
iptables -L
-------------------
Chain INPUT (policy ACCEPT)
10、安装依赖包
yum -y install wget jq psmisc vim net-tools nfs-utils socat telnet device-mapper-persistent-data lvm2 git network-scripts tar curl -y
yum install -y conntrack ipvsadm ipset jq iptables curl sysstat libseccomp wget vim net-tools git
11、开启ipvs转发
yum install ipvsadm ipset sysstat conntrack libseccomp -y
--------------------------
modprobe br_netfilter
cat > /etc/sysconfig/modules/ipvs.modules << EOF
#!/bin/bash
modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack
EOF
---------------------------
chmod 755 /etc/sysconfig/modules/ipvs.modules
bash /etc/sysconfig/modules/ipvs.modules
lsmod | grep -e ip_vs -e nf_conntrack
-----------------------------------
重启服务
systemctl restart systemd-modules-load.service
-----------------------------------------------------
查看到以下内容
lsmod | grep -e ip_vs -e nf_conntrack
-------------------------------
ip_vs_sh 16384 0
ip_vs_wrr 16384 0
ip_vs_rr 16384 0
ip_vs 180224 6 ip_vs_rr,ip_vs_sh,ip_vs_wrr
nf_conntrack 176128 1 ip_vs
nf_defrag_ipv6 24576 2 nf_conntrack,ip_vs
nf_defrag_ipv4 16384 1 nf_conntrack
libcrc32c 16384 3 nf_conntrack,xfs,ip_vs
-----------------------------
cat >> /etc/modules-load.d/ipvs.conf <<EOF
ip_vs
ip_vs_rr
ip_vs_wrr
ip_vs_sh
nf_conntrack
ip_tables
ip_set
xt_set
ipt_set
ipt_rpfilter
ipt_REJECT
ipip
EOF
systemctl restart systemd-modules-load.service
lsmod | grep -e ip_vs -e nf_conntrack
执行以下命令,到3台机器上,不然初始化k8s集群的时候会报错
echo 'net.ipv4.ip_forward=1' | sudo tee -a /etc/sysctl.conf
sudo sysctl -p
sudo service network restart
12、句柄数最大
ulimit -SHn 65535
cat >> /etc/security/limits.conf <<EOF
* soft nofile 655360
* hard nofile 131072
* soft nproc 655350
* hard nproc 655350
* seft memlock unlimited
* hard memlock unlimitedd
EOF
查看修改结果
ulimit -a
13、资源实现最大
vim /etc/default/grub
添加 numa=off
查看
sudo yum install numactl
numactl --show
14、系统优化
cat > /etc/sysctl.d/k8s_better.conf << EOF
net.bridge.bridge-nf-call-iptables=1
net.bridge.bridge-nf-call-ip6tables=1
net.ipv4.ip_forward=1
vm.swappiness=0
vm.overcommit_memory=1
vm.panic_on_oom=0
fs.inotify.max_user_instances=8192
fs.inotify.max_user_watches=1048576
fs.file-max=52706963
fs.nr_open=52706963
net.ipv6.conf.all.disable_ipv6=1
net.netfilter.nf_conntrack_max=2310720
EOF
modprobe br_netfilter
lsmod |grep conntrack
modprobe ip_conntrack
sysctl -p /etc/sysctl.d/k8s_better.conf
-----------------------------------
#确保每台机器的uuid不一致,如果是克隆机器,
修改网卡配置文件删除uuid那一行
cat /sys/class/dmi/id/product_uuid
15、执行shh免密
更改初始密码
echo root | passwd root --stdin //改集群密码为root
敲3下回车,生成秘钥
ssh-keygen -t rsa
ssh-copy-id lyc-80-51
ssh-copy-id lyc-80-52
ssh-copy-id lyc-80-53
-----------以上命令,每台机器都需要执行
也可以使用免密脚本
./fgssh -user root -hosts "lyc-80-48 lyc-80-49 lyc-80-50 lyc-80-51 lyc-80-52" -advanced -exverify -confirm
【到此,初始化已完毕,请关闭3台机器,进行快照备份!!!】
二、安装docker
【3台全安装】
1、配置docker源
获取阿里云YUM源
vim /etc/yum.repos.d/docker-ce.repo
添加以下内容
--------------------
[docker-ce-stable]
name=Docker CE Stable- $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/8/$basearch/stable
enabled=1
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg
------------------
yum makecache
下载安装:
yum install -y docker-ce
验证版本
docker -v
2、镜像加速 启动docker
mkdir -p /etc/docker
----------------------
cat >/etc/docker/daemon.json <<EOF
{
"exec-opts": ["native.cgroupdriver=systemd"],
"registry-mirrors": [
"https://docker.1panel.live",
"https://docker.m.daocloud.io",
"https://huecker.io"
],
"insecure-registries":["reg.xiaochun.test"],
"max-concurrent-downloads": 10,
"log-driver": "json-file",
"log-level": "warn",
"log-opts": {
"max-size": "10m",
"max-file": "3"
},
"data-root": "/var/lib/docker"
}
EOF
----------------------
设置开机启动
systemctl enable docker
systemctl restart docker
systemctl status docker
下载镜像测试下
docker pull nginx
3、配置cri-docker环境
由于1.24以及更高版本不支持docker所以安装cri-docker
手动下载
https://github.com/Mirantis/cri-dockerd/releases/download/v0.3.14/cri-dockerd-0.3.14-3.el8.x86_64.rpm
自动下载
wget https://github.com/Mirantis/cri-dockerd/releases/download/v0.3.14/cri-dockerd-0.3.14-3.el8.x86_64.rpm
rpm -ivh cri-dockerd-0.3.14-3.el8.x86_64.rpm
yum -y install libcgroup
vim /usr/lib/systemd/system/cri-docker.service
------------------
修改第10行内容
ExecStart=/usr/bin/cri-dockerd --pod-infra-container-image=registry.aliyuncs.com/google_containers/pause:3.9 --container-runtime-endpoint fd://
------------------------
设置开机启动
systemctl start cri-docker
systemctl enable cri-docker
三、安装k8s 1.31.x
1、配置k8s yum源
3台机器全部配置
阿里官网
https://developer.aliyun.com/mirror/kubernetes?spm=a2c6h.13651102.0.0.73281b11BEAEr6
1.添加阿里云YUM软件源
------------
cat <<EOF | tee /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes-new/core/stable/v1.31/rpm/
enabled=1
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes-new/core/stable/v1.31/rpm/repodata/repomd.xml.key
EOF
-------------
清除原有 yum 缓存
yum clean all
生成新的缓存
yum makecache
2、查看所有可用的版本
yum list kubelet --showduplicates | sort -r |grep 1.31
3、安装kubeadm,kubelet和kubectl
3台机器全部执行
yum install -y kubectl kubelet kubeadm
会自动安装5个包,明细如下:
containernetworking-plugins-1.2.0-3.oe2403.x86_64
cri-tools-1.31.1-150500.1.1.x86_64
kubeadm-1.31.0-150500.1.1.x86_64
kubectl-1.31.0-150500.1.1.x86_64
kubelet-1.31.0-150500.1.1.x86_64
4、配置cgroup
为了实现docker使用的cgroupdriver与kubelet使用的cgroup的一致性,建议修改如下文件内容。
vim /etc/sysconfig/kubelet [3台全部设置下]
---------------------
添加
KUBELET_EXTRA_ARGS="--cgroup-driver=systemd"
---------------------
设置kubelet为开机自启动即可,由于没有生成配置文件,集群初始化后自动启动
systemctl enable kubelet
5、准备k8s 1.31.0镜像
kubeadm config images list --kubernetes-version=v1.31.0
6、拉取镜像
使用以下命令从阿里云仓库拉取镜像 [3台都执行安装]
kubeadm config images pull --image-repository registry.aliyuncs.com/google_containers --cri-socket=unix:///var/run/cri-dockerd.sock
要拉取7个镜像
注意要加上这句再执行,不然报错--cri-socket=unix:///var/run/cri-dockerd.sock
7、集群初始化
集群初始化 【主机54安装即可】
使用kubeadm init命令初始化
在lyc-80-54上执行,注意要加上这句再执行,不然报错--cri-socket=unix:///var/run/cri-dockerd.sock
vim kubeinit.sh
. ./kubeinit.sh
-------------------------------------
kubeadm init --kubernetes-version=v1.31.0 --pod-network-cidr=10.224.0.0/16 --apiserver-advertise-address=192.168.80.54 --image-repository registry.aliyuncs.com/google_containers --cri-socket=unix:///var/run/cri-dockerd.sock
------------------------------------------
--apiserver-advertise-address 集群通告地址
--image-repository 由于默认拉取镜像地址k8s.gcr.io国内无法访问,这里指定阿里云镜像仓库地址
--kubernetes-version K8s版本,与上面安装的一致
--service-cidr 集群内部虚拟网络,Pod统一访问入口
--pod-network-cidr Pod网络,,与下面部署的CNI网络组件yaml中保持一致
报错了
IP转发的问题,执行以下命令
echo 'net.ipv4.ip_forward=1' | sudo tee -a /etc/sysctl.conf
sudo sysctl -p
sudo service network restart
再次执行
. ./kubeinit.sh
安装成功后会有提示
Your Kubernetes control-plane has initialized successfully!
To start using your cluster, you need to run the following as a regular user:
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
Alternatively, if you are the root user, you can run:
export KUBECONFIG=/etc/kubernetes/admin.conf
You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
https://kubernetes.io/docs/concepts/cluster-administration/addons/
Then you can join any number of worker nodes by running the following on each as root:
kubeadm join 192.168.80.54:6443 --token l02pkw.2ccruhqj9qelkv3p \
--discovery-token-ca-cert-hash sha256:a960721267396dd59a38d67a48be7e9afb42e6730ef666926ea535ccbb65591b
/////要记住token,一会登录web管理界面会使用到token
根据提示,主节点执行下提示信息
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
8、node节点加入集群
lyc-80-55/lyc-80-56 分别执行
kubeadm join 192.168.80.54:6443 --token d5zi8r.8bszqsittboc5pqw \
--discovery-token-ca-cert-hash sha256:d142d0e9b35e25584e017b1a894837b1f6a18b6c84ed262907937dcd3b71cb59 --cri-socket=unix://var/run/cri-dockerd.sock
注意要加上这句再执行,不然报错--cri-socket=unix:///var/run/cri-dockerd.sock
9、查看集群节点
# 查看集群节点:
kubectl get node
3台机器poweroff关机,虚拟机备份下
10、安装Calico网络插件
网络组件有很多种,只需要部署其中一个即可,推荐Calico。
Calico是一个纯三层的数据中心网络方案,Calico支持广泛的平台,包括Kubernetes、OpenStack等。
Calico 在每一个计算节点利用 Linux Kernel 实现了一个高效的虚拟路由器(vRouter)来负责数据转发,
而每个 vRouter 通过 BGP 协议负责把自己上运行的 workload 的路由信息向整个 Calico 网络内传播。
此外,Calico 项目还实现了 Kubernetes 网络策略,提供ACL功能。
***************************************************
下载Calico配置文件
wget --no-check-certificate https://raw.githubusercontent.com/projectcalico/calico/v3.28.0/manifests/calico.yaml
这里我用的是提前准备好的配置文件
还记得初始化k8s集群时填的这个地址不?
--pod-network-cidr=10.224.0.0/16
安装网络插件calico的时候,配置成这个地址才行
vim calico.yaml
---------------
注意看2个地方的配置
搜索查看文件:
:/10.224 【注意IP、网卡名,我第一次就因为网卡名没起来】
:/image 版本v3.28.0
-------------------
效果与上边wget的效果一样,只是版本不一样,最新版本v3.28.0
部署calico网络
kubectl apply -f calico.yaml
也可以将镜像提前拉取下来
docker pull calico/cni:v3.28.0
docker pull calico/node:v3.28.0
docker pull calico/kube-controllers:v3.28.0
查看网络
kubectl get nodes -o wide
kubectl get pods --all-namespaces -o wide
等待几分钟查看pod情况
kubectl get node
11、安装metrics-server服务
metrics-server主要是采集k8s集群资源信息的,参考linux系统中的htop命令
vim components.yaml
--------------------
注意注意以下内容
135 - --cert-dir=/tmp
136 - --secure-port=4443
137 - --kubelet-preferred-address-types=InternalIP
138 - --kubelet-use-node-status-port
139 - --metric-resolution=15s
140 - --kubelet-insecure-tls
141 image: registry.aliyuncs.com/google_containers/metrics-server:v0.6.1
142 imagePullPolicy: IfNotPresent
-------------------
执行安装
kubectl apply -f components.yaml
查看pod
kubectl get pod -n kube-system
查看k8s集群资源
kubectl top node
kubectl top pod -n kube-system
11、安装dashboard控制面板
下载yaml文件,目前最新版本为v2.7.0
wget https://raw.githubusercontent.com/kubernetes/dashboard/v2.7.0/aio/deploy/recommended.yaml
编辑文件,注意修改内容
vim recommended.yaml
--------------
spec:
40 ports:
41 - port: 443
42 targetPort: 8443
43 nodePort: 30001 //改动第43行端口为30001
44 type: NodePort //改动第44行端口为NodePort
45 selector:
46 k8s-app: kubernetes-dashboard
----------------
193 containers:
194 - name: kubernetes-dashboard
195 image: registry.cn-hangzhou.aliyuncs.com/ywflyfish/dashboard:v2.7.0 //换成国内镜像
启动recommended文件
kubectl apply -f recommended.yaml
-------------------
查看pod情况
kubectl get ns
13、创建dashboard用户
下载文件
wget https://raw.githubusercontent.com/cby-chen/Kubernetes/main/yaml/dashboard-user.yaml
vim dashboard-user.yaml
----------------------
apiVersion: v1
kind: ServiceAccount
metadata:
name: admin-user
namespace: kubernetes-dashboard ///命名空间
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding ///最大用户
metadata:
name: admin-user
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole ///组用户
name: cluster-admin
subjects:
- kind: ServiceAccount
name: admin-user ///单个用户
namespace: kubernetes-dashboard
-----------------------
【说明】
用户权限传递:admin-user---->>>ClusterRole---->>>ClusterRoleBinding
创建用户权限
kubectl apply -f dashboard-user.yaml
查看用户权限
kubectl get sa
创建用户token
kubectl create token admin-user -n kubernetes-dashboard
///复制token
查看pod状态
kubectl get pod -n kubernetes-dashboard
查看网络信息
kubectl get pod -n kubernetes-dashboard -o wide
查看deploy状态
kubectl get deploy -n kubernetes-dashboard
查看ep状态
kubectl get ep -n kubernetes-dashboard
查看svc状态
kubectl get svc -n kubernetes-dashboard
【注意网络数据流3次转发,类似LVS转发】
查看kube-proxy端口信息
ps -ef |grep kube-proxy
////3台机器都可以查看到kube-proxy,说明每个IP都可以登录dashboard页面
过滤端口号
netstat -nutlp |grep 30001
14、登录dashboard页面
三台机器都可以测试登录下,能登录说明kube-proxy端口正常
登录dashboard页面
https://192.168.80.54:30001
登录dashboard页面
https://192.168.80.55:30001
登录dashboard页面
https://192.168.80.56:30001
输入token进行登录
eyJhbGciOiJSUzI1NiIsImtpZCI6IkdhX3lUVHo5OEY1WktEMDhCQnBFMUh1aVYtYmhraDhkX2tJVUhNRW56VnMifQ.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.bMGb7EDNTKPHtt_UrNHUKffUJjMDUEny_BIqBk1P3YXu-ur5_Cm93_2WwCLKaQgfVRXuDfdTd9MWx4lkmq1IGaJdu7fP68W5jvhuo8jOC-FPrQ6S57V18qJcbJOaxm_qskVX3wHKN_r7i3XsaRPf2ZEXxr7euwIN7BSoSrYHsEMpbx2WiTAxGndketNA6pgH-8W0772TAs2GZvdE90yTCmneRRVLMo0gBtHr0a99jiTC5m2vJn_0HwyanH_WPIb7ywY6_fLSiK6IQyMZIDpvndTMUjuNCv72io0Zj9Sh49_HLHhIIAav9b0lQr00mPIAX-AqtQUhjSptKb7rnolQLA
查看命名空间
[root@lyc-80-54 yaml]# kubectl get ns
NAME STATUS AGE
default Active 6h10m
kube-node-lease Active 6h10m
kube-public Active 6h10m
kube-system Active 6h10m
kubernetes-dashboard Active 54m
15、测试集群性能
部署一个nginx:
vim nginx-web.yaml
------------
kind: Deployment ////控制器
#apiVersion: extensions/v1beta1 ///已被弃用
apiVersion: apps/v1 【app端】
metadata:
labels:
app: nginx-deployment-label
name: nginx-deployment
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: nginx-selector
template:
metadata:
labels:
app: nginx-selector
spec:
containers:
- name: nginx-container
image: registry.cn-hangzhou.aliyuncs.com/ywflyfish/nginx:latest
imagePullPolicy: IfNotPresent
ports:
- containerPort: 80
protocol: TCP
name: http
- containerPort: 443
protocol: TCP
name: https
---------------
kind: Service 【服务端】
apiVersion: v1
metadata:
labels:
app: nginx-service-label
name: nginx-service
namespace: default
spec:
type: NodePort
ports:
- name: http
port: 80
protocol: TCP
targetPort: 80
nodePort: 31180
- name: https
port: 443
protocol: TCP
targetPort: 443
nodePort: 31443
selector:
app: nginx-selector
------------------------
启动web文件
kubectl apply -f nginx-web.yaml
查看服务:
kubectl get pod
kubectl get pod -o wide
kubectl get svc
浏览器访问:
http://192.168.80.56:31180
改为3个pod试试呢?
kubectl get node
kubectl get pod
到此,说明k8s集群底层走docker搭建正常!!!!!
【总结】
①由于1.24以及更高版本不支持docker所以安装cri-docker
②下载k8s镜像、k8s集群初始化、node节点加入都要在结尾加上这句话,不然报错
--cri-socket=unix:///var/run/cri-dockerd.sock