最新版本 - 二进制安装k8s1.29.2 集群

一、环境初始化

角色	IP
master01	192.168.174.143
master02	192.168.174.144
master03	192.168.174.145
node01	192.168.174.146
node02	192.168.174.147

角色	组件
master	nginx、APIServer、Schedule、Controllermanager、kubelet、kube-proxy、ETCD
node	nginx、kubelet、kube-proxy

作者这里有软件包，里面包含了所有镜像及yaml文件，需要的请留言

所有机器都要操作

1. 安装依赖文件
yum install -y conntrack ipvsadm ipset jq iptables sysstat libseccomp wget vim net-tools
yum -y install lrzsz  yum-utils telnet  unzip tar iptables-services
yum -y install psmisc nfs-utils device-mapper-persistent-data lvm2 2.修改主机名和 /etc/hosts 解析文件
hostnamectl set-hostname  master-01
hostnamectl set-hostname  master-02
hostnamectl set-hostname  master-03
hostnamectl set-hostname  node-01
hostnamectl set-hostname  node-02
...
...vim /etc/hosts
192.168.174.143  master-01 ms1
192.168.174.144  master-02 ms2
192.168.174.145  master-03 ms3
192.168.174.146  node-01 n1
192.168.174.147  node-02 n23.做个免密
ssh-keygen
for i in ms1 ms2 ms3 n1 n2
dossh-copy-id $i
done4.Rocky 系统软件源更换
sed -e 's|^mirrorlist=|#mirrorlist=|g' \-e 's|^#baseurl=http://dl.rockylinux.org/$contentdir|baseurl=https://mirrors.aliyun.com/rockylinux|g' \-i.bak \/etc/yum.repos.d/[Rr]ocky*.repodnf makecache5.防火墙修改 firewalld 为 iptables。禁用 Selinux
systemctl stop firewalld
systemctl disable firewalldyum -y install iptables-services
systemctl start iptables
iptables -F
systemctl enable iptablessetenforce 0
sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
grubby --update-kernel ALL --args selinux=0
# 查看是否禁用
grubby --info DEFAULT
# 回滚内核层禁用操作
grubby --update-kernel ALL --remove-args selinux# 设置时区
timedatectl set-timezone Asia/Shanghai
# 关闭 swap 分区
swapoff -a
sed -i 's:/dev/mapper/rl-swap:#/dev/mapper/rl-swap:g' /etc/fstab
# 安装 ipvs
yum install -y ipvsadm
# 开启路由转发
echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf
sysctl -p# 时间同步配置
# 服务端      3台master操作即可
yum install chrony -ycat > /etc/chrony.conf << EOF 
pool ntp.aliyun.com iburst
driftfile /var/lib/chrony/drift
makestep 1.0 3
rtcsync
allow 192.168.174.0/24
local stratum 10   # 三台权重需要不一样
keyfile /etc/chrony.keys
leapsectz right/UTC
logdir /var/log/chrony
EOFsystemctl restart chronyd ; systemctl enable chronyd# 客户端  2 台 node节点操作即可
yum install chrony -ycat > /etc/chrony.conf << EOF 
pool 192.168.174.143 iburst
pool 192.168.174.144 iburst
pool 192.168.174.145 iburst
driftfile /var/lib/chrony/drift
makestep 1.0 3
rtcsync
keyfile /etc/chrony.keys
leapsectz right/UTC
logdir /var/log/chrony
EOFsystemctl restart chronyd && systemctl enable chronyd#使用客户端进行验证
chronyc sources -v6.配置 ulimit  所有机器都需要操作
ulimit -SHn 65535cat >> /etc/security/limits.conf <<EOF
* soft nofile 655360
* hard nofile 131072
* soft nproc 655350
* hard nproc 655350
* seft memlock unlimited
* hard memlock unlimitedd
EOF7. 安装 ipvs
yum install ipvsadm ipset sysstat conntrack libseccomp -ycat >> /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
EOFsystemctl restart systemd-modules-load.service
lsmod | grep -e ip_vs -e nf_conntrack# 修改内核参数
cat <<EOF > /etc/sysctl.d/k8s.conf
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-iptables = 1
fs.may_detach_mounts = 1
vm.overcommit_memory=1
vm.panic_on_oom=0
fs.inotify.max_user_watches=89100
fs.file-max=52706963
fs.nr_open=52706963
net.netfilter.nf_conntrack_max=2310720
net.ipv4.tcp_keepalive_time = 600
net.ipv4.tcp_keepalive_probes = 3
net.ipv4.tcp_keepalive_intvl =15
net.ipv4.tcp_max_tw_buckets = 36000
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_max_orphans = 327680
net.ipv4.tcp_orphan_retries = 3
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_max_syn_backlog = 16384
net.ipv4.ip_conntrack_max = 65536
net.ipv4.tcp_max_syn_backlog = 16384
net.ipv4.tcp_timestamps = 0
net.core.somaxconn = 16384
net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0
net.ipv6.conf.all.forwarding = 1
EOFsysctl --system# 安装 Docker
# 二进制包下载地址：https://download.docker.com/linux/static/stable/x86_64/
# wget https://mirrors.ustc.edu.cn/docker-ce/linux/static/stable/x86_64/docker-25.0.3.tgztar xf docker-*.tgz cp docker/* /usr/bin/
# 创建 containerd 的 service 文件,并且启动
cat >/etc/systemd/system/containerd.service <<EOF
[Unit]
Description=containerd container runtime
Documentation=https://containerd.io
After=network.target local-fs.target[Service]
ExecStartPre=-/sbin/modprobe overlay
ExecStart=/usr/bin/containerd
Type=notify
Delegate=yes
KillMode=process
Restart=always
RestartSec=5
LimitNPROC=infinity
LimitCORE=infinity
LimitNOFILE=1048576
TasksMax=infinity
OOMScoreAdjust=-999[Install]
WantedBy=multi-user.target
EOFsystemctl enable --now containerd.service# 准备 docker 的 service 文件
cat > /etc/systemd/system/docker.service <<EOF
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service cri-docker.service docker.socket containerd.service
Wants=network-online.target
Requires=docker.socket containerd.service[Service]
Type=notify
ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always
StartLimitBurst=3
StartLimitInterval=60s
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
TasksMax=infinity
Delegate=yes
KillMode=process
OOMScoreAdjust=-500[Install]
WantedBy=multi-user.target
EOF#准备 docker 的 socket 文件
cat > /etc/systemd/system/docker.socket <<EOF
[Unit]
Description=Docker Socket for the API[Socket]
ListenStream=/var/run/docker.sock
SocketMode=0660
SocketUser=root
SocketGroup=docker[Install]
WantedBy=sockets.target
EOF# 配置加速器
mkdir /etc/docker/ -pv
mkdir -pv /data/dockercat >/etc/docker/daemon.json <<EOF
{"exec-opts": ["native.cgroupdriver=systemd"],"registry-mirrors": ["https://docker.mirrors.ustc.edu.cn","https://docker.cloudmessage.top","https://kfp63jaj.mirror.aliyuncs.com","https://j47dskil.mirror.aliyuncs.com"],"max-concurrent-downloads": 10,"log-driver": "json-file","log-level": "warn","log-opts": {"max-size": "10m","max-file": "3"},"data-root": "/data/docker"
}
EOF# 启动 Docker
groupadd docker
systemctl daemon-reload
systemctl enable --now docker.socket
systemctl enable --now docker.service
systemctl status docker.service
docker info# 解压 cri-docker
# https://github.com/Mirantis/cri-dockerd/releases/
# wget https://github.com/Mirantis/cri-dockerd/releases/download/v0.3.16/cri-dockerd-0.3.16.amd64.tgz
tar xvf cri-dockerd-*.amd64.tgz 
cd cri-dockerd 
cp -r cri-dockerd  /usr/bin/
chmod +x /usr/bin/cri-dockerd# 写入启动  cri-docker 配置文件
cat >  /usr/lib/systemd/system/cri-docker.service <<EOF
[Unit]
Description=CRI Interface for Docker Application Container Engine
Documentation=https://docs.mirantis.com
After=network-online.target firewalld.service docker.service
Wants=network-online.target
Requires=cri-docker.socket[Service]
Type=notify
ExecStart=/usr/bin/cri-dockerd --network-plugin=cni --pod-infra-container-image=registry.aliyuncs.com/google_containers/pause:3.7
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always
StartLimitBurst=3
StartLimitInterval=60s
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
TasksMax=infinity
Delegate=yes
KillMode=process[Install]
WantedBy=multi-user.target
EOF# 写入 cri-docker 的 socket 配置文件cat > /usr/lib/systemd/system/cri-docker.socket <<EOF
[Unit]
Description=CRI Docker Socket for the API
PartOf=cri-docker.service[Socket]
ListenStream=%t/cri-dockerd.sock
SocketMode=0660
SocketUser=root
SocketGroup=docker[Install]
WantedBy=sockets.target
EOFsystemctl daemon-reload
systemctl enable --now cri-docker.service
systemctl status docker.service

二、K8S 与 ETCD 下载及安装

在 master01 节点上操作

1、安装 K8S 和 ETCD 二进制文件

wget https://github.com/etcd-io/etcd/releases/download/v3.5.12/etcd-v3.5.12-linux-amd64.tar.gz
wget https://dl.k8s.io/v1.29.2/kubcdernetes-server-linux-amd64.tar.gz# 解压k8s安装文件
tar -xf kubernetes-server-linux-amd64.tar.gz  --strip-components=3 -C /usr/local/bin kubernetes/server/bin/kube{let,ctl,-apiserver,-controller-manager,-scheduler,-proxy}# 解压etcd安装文件
tar -xf etcd*.tar.gz && mv etcd-*/etcd /usr/local/bin/ && mv etcd-*/etcdctl /usr/local/bin/# 查看/usr/local/bin下内容
ls /usr/local/bin/# 查看版本
kubelet --versionKubernetes v1.29.2
etcdctl versionetcdctl version: 3.5.12API version: 3.5# 将组件发送至其它 k8s 节点
Master='master-02 master-03'
Work='node-01 node-02'# 拷贝 master 组件
for NODE in $Master
do
echo $NODE
scp /usr/local/bin/kube{let,ctl,-apiserver,-controller-manager,-scheduler,-proxy} $NODE:/usr/local/bin/
scp /usr/local/bin/etcd* $NODE:/usr/local/bin/
done# 拷贝 work 组件
for NODE in $Work
do
echo $NODE
scp /usr/local/bin/kube{let,-proxy,ctl} $NODE:/usr/local/bin/
done
# 所有节点执行
mkdir -p /opt/cni/bin
# 
有需求可以安装一个ansible；(可忽略)
ansible  ms1-n1 -m shell -a 'mkdir -p /opt/cni/bin'(可忽略)

ansible安装文档

2.相关证书生成

生成 ETCD 证书

# 安装证书工具
# master01 节点下载证书生成工具  
wget "https://github.com/cloudflare/cfssl/releases/download/v1.6.4/cfssl_1.6.4_linux_amd64" -O /usr/local/bin/cfssl
wget "https://github.com/cloudflare/cfssl/releases/download/v1.6.4/cfssljson_1.6.4_linux_amd64" -O /usr/local/bin/cfssljson# 生成 ETCD 证书（以下操作在所有 master 节点操作）
# 先在 master01 节点生成 etcd 证书（然后传到剩下两台）
mkdir /etc/etcd/ssl -p
cat > ca-config.json << EOF 
{"signing": {"default": {"expiry": "876000h"},"profiles": {"kubernetes": {"usages": ["signing","key encipherment","server auth","client auth"],"expiry": "876000h"}}}
}
EOFcat > etcd-ca-csr.json  << EOF 
{"CN": "etcd","key": {"algo": "rsa","size": 2048},"names": [{"C": "CN","ST": "Beijing","L": "Beijing","O": "etcd","OU": "Etcd Security"}],"ca": {"expiry": "876000h"}
}
EOF# 使用 cfssl 工具根据配置文件 ca-csr.json 生成一个 CA 证书，并将证书文件保存在 /etc/etcd/ssl/etcd-ca 路径下。
cfssl gencert -initca etcd-ca-csr.json | cfssljson -bare /etc/etcd/ssl/etcd-cacat > etcd-csr.json << EOF 
{"CN": "etcd","key": {"algo": "rsa","size": 2048},"names": [{"C": "CN","ST": "Beijing","L": "Beijing","O": "etcd","OU": "Etcd Security"}]
}
EOF# 使用指定的CA证书和私钥，根据证书请求的JSON文件和配置文件生成etcd的证书文件。
cfssl gencert    -ca=/etc/etcd/ssl/etcd-ca.pem    -ca-key=/etc/etcd/ssl/etcd-ca-key.pem -config=ca-config.json -hostname=127.0.0.1,master-01,master-02,master-03,192.168.174.143,192.168.174.144,192.168.174.145  -profile=kubernetes    etcd-csr.json | cfssljson -bare /etc/etcd/ssl/etcd# 将证书复制到其他节点
Master='master-02 master-03'for NODE in $Master
do 
ssh $NODE "mkdir -p /etc/etcd/ssl"for FILE in etcd-ca-key.pem  etcd-ca.pem  etcd-key.pem  etcd.pemdo scp /etc/etcd/ssl/${FILE} $NODE:/etc/etcd/ssl/${FILE}done
done

生成 K8S 相关证书

# 生成 K8S 相关证书（特别说明除外，以下操作在所有 master 节点操作）
# 创建存放目录（所有master节点）
Master='master-01 master-02 master-03'for NODE in $Master
do 
ssh $NODE "mkdir -p /etc/kubernetes/pki"
done# 先在 master01 节点生成 k8s 相关证书（然后传到剩下两台）
# 写入生成证书所需的配置文件
# 这个配置文件可以用于生成 Kubernetes 相关的证书，以确保集群中的通信安全性。
cat > ca-csr.json   << EOF 
{"CN": "kubernetes","key": {"algo": "rsa","size": 2048},"names": [{"C": "CN","ST": "Beijing","L": "Beijing","O": "Kubernetes","OU": "Kubernetes-manual"}],"ca": {"expiry": "876000h"}
}
EOF# 使用cfssl工具根据配置文件ca-csr.json生成一个CA证书，并将证书文件保存在/etc/kubernetes/pki/ca路径下。
cfssl gencert -initca ca-csr.json | cfssljson -bare /etc/kubernetes/pki/cacat > apiserver-csr.json << EOF 
{"CN": "kube-apiserver","key": {"algo": "rsa","size": 2048},"names": [{"C": "CN","ST": "Beijing","L": "Beijing","O": "Kubernetes","OU": "Kubernetes-manual"}]
}
EOFcat > ca-config.json << EOF 
{"signing": {"default": {"expiry": "876000h"},"profiles": {"kubernetes": {"usages": ["signing","key encipherment","server auth","client auth"],"expiry": "876000h"}}}
}
EOF# 通过指定一个配置文件和一组主机名/地址，使用指定的 CA 对 Kubernetes API Server 证书进行签名，生成用于 API Server 和其他 Kubernetes 组件安全通信的证书和密钥文件
cfssl gencert   -ca=/etc/kubernetes/pki/ca.pem -ca-key=/etc/kubernetes/pki/ca-key.pem  -config=ca-config.json -hostname=10.96.0.1,192.168.10.16,127.0.0.1,kubernetes,kubernetes.default,kubernetes.default.svc,kubernetes.default.svc.cluster,kubernetes.default.svc.cluster.local,192.168.174.143,192.168.174.144,192.168.174.145,192.168.174.146,192.168.174.147,192.168.174.148,192.168.174.149,192.168.174.150,192.168.174.151,192.168.174.152, -profile=kubernetes   apiserver-csr.json | cfssljson -bare /etc/kubernetes/pki/apiserver
# 多加几个hostname 没关系，以防后续新增

生成 apiserver 聚合证书

cat > front-proxy-ca-csr.json  << EOF 
{"CN": "kubernetes","key": {"algo": "rsa","size": 2048},"ca": {"expiry": "876000h"}
}
EOFcfssl gencert   -initca front-proxy-ca-csr.json | cfssljson -bare /etc/kubernetes/pki/front-proxy-ca cat > front-proxy-client-csr.json  << EOF 
{"CN": "front-proxy-client","key": {"algo": "rsa","size": 2048}
}
EOFcfssl gencert  \
-ca=/etc/kubernetes/pki/front-proxy-ca.pem   \
-ca-key=/etc/kubernetes/pki/front-proxy-ca-key.pem   \
-config=ca-config.json   \
-profile=kubernetes   front-proxy-client-csr.json | cfssljson -bare /etc/kubernetes/pki/front-proxy-client

生成 controller-manage 的证书

cat > manager-csr.json << EOF 
{"CN": "system:kube-controller-manager","key": {"algo": "rsa","size": 2048},"names": [{"C": "CN","ST": "Beijing","L": "Beijing","O": "system:kube-controller-manager","OU": "Kubernetes-manual"}]
}
EOFcfssl gencert \-ca=/etc/kubernetes/pki/ca.pem \-ca-key=/etc/kubernetes/pki/ca-key.pem \-config=ca-config.json \-profile=kubernetes \manager-csr.json | cfssljson -bare /etc/kubernetes/pki/controller-managerkubectl config set-cluster kubernetes \--certificate-authority=/etc/kubernetes/pki/ca.pem \--embed-certs=true \--server=https://127.0.0.1:8443 \--kubeconfig=/etc/kubernetes/controller-manager.kubeconfigkubectl config set-context system:kube-controller-manager@kubernetes \--cluster=kubernetes \--user=system:kube-controller-manager \--kubeconfig=/etc/kubernetes/controller-manager.kubeconfigkubectl config set-credentials system:kube-controller-manager \--client-certificate=/etc/kubernetes/pki/controller-manager.pem \--client-key=/etc/kubernetes/pki/controller-manager-key.pem \--embed-certs=true \--kubeconfig=/etc/kubernetes/controller-manager.kubeconfigkubectl config use-context system:kube-controller-manager@kubernetes \--kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

生成 kube-scheduler 的证书

cat > scheduler-csr.json << EOF 
{"CN": "system:kube-scheduler","key": {"algo": "rsa","size": 2048},"names": [{"C": "CN","ST": "Beijing","L": "Beijing","O": "system:kube-scheduler","OU": "Kubernetes-manual"}]
}
EOFcfssl gencert \-ca=/etc/kubernetes/pki/ca.pem \-ca-key=/etc/kubernetes/pki/ca-key.pem \-config=ca-config.json \-profile=kubernetes \scheduler-csr.json | cfssljson -bare /etc/kubernetes/pki/schedulerkubectl config set-cluster kubernetes \--certificate-authority=/etc/kubernetes/pki/ca.pem \--embed-certs=true \--server=https://127.0.0.1:8443 \--kubeconfig=/etc/kubernetes/scheduler.kubeconfigkubectl config set-credentials system:kube-scheduler \--client-certificate=/etc/kubernetes/pki/scheduler.pem \--client-key=/etc/kubernetes/pki/scheduler-key.pem \--embed-certs=true \--kubeconfig=/etc/kubernetes/scheduler.kubeconfigkubectl config set-context system:kube-scheduler@kubernetes \--cluster=kubernetes \--user=system:kube-scheduler \--kubeconfig=/etc/kubernetes/scheduler.kubeconfigkubectl config use-context system:kube-scheduler@kubernetes \--kubeconfig=/etc/kubernetes/scheduler.kubeconfig

生成 admin 的证书配置

cat > admin-csr.json << EOF 
{"CN": "admin","key": {"algo": "rsa","size": 2048},"names": [{"C": "CN","ST": "Beijing","L": "Beijing","O": "system:masters","OU": "Kubernetes-manual"}]
}
EOFcfssl gencert \-ca=/etc/kubernetes/pki/ca.pem \-ca-key=/etc/kubernetes/pki/ca-key.pem \-config=ca-config.json \-profile=kubernetes \admin-csr.json | cfssljson -bare /etc/kubernetes/pki/adminkubectl config set-cluster kubernetes     \--certificate-authority=/etc/kubernetes/pki/ca.pem     \--embed-certs=true     \--server=https://127.0.0.1:8443     \--kubeconfig=/etc/kubernetes/admin.kubeconfigkubectl config set-credentials kubernetes-admin  \--client-certificate=/etc/kubernetes/pki/admin.pem     \--client-key=/etc/kubernetes/pki/admin-key.pem     \--embed-certs=true     \--kubeconfig=/etc/kubernetes/admin.kubeconfigkubectl config set-context kubernetes-admin@kubernetes    \--cluster=kubernetes     \--user=kubernetes-admin     \--kubeconfig=/etc/kubernetes/admin.kubeconfigkubectl config use-context kubernetes-admin@kubernetes  --kubeconfig=/etc/kubernetes/admin.kubeconfig

创建 kube-proxy 证书

cat > kube-proxy-csr.json  << EOF 
{"CN": "system:kube-proxy","key": {"algo": "rsa","size": 2048},"names": [{"C": "CN","ST": "Beijing","L": "Beijing","O": "system:kube-proxy","OU": "Kubernetes-manual"}]
}
EOFcfssl gencert \-ca=/etc/kubernetes/pki/ca.pem \-ca-key=/etc/kubernetes/pki/ca-key.pem \-config=ca-config.json \-profile=kubernetes \kube-proxy-csr.json | cfssljson -bare /etc/kubernetes/pki/kube-proxykubectl config set-cluster kubernetes     \--certificate-authority=/etc/kubernetes/pki/ca.pem     \--embed-certs=true     \--server=https://127.0.0.1:8443     \--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfigkubectl config set-credentials kube-proxy  \--client-certificate=/etc/kubernetes/pki/kube-proxy.pem     \--client-key=/etc/kubernetes/pki/kube-proxy-key.pem     \--embed-certs=true     \--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfigkubectl config set-context kube-proxy@kubernetes    \--cluster=kubernetes     \--user=kube-proxy     \--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfigkubectl config use-context kube-proxy@kubernetes  --kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig

创建 ServiceAccount Key ——secret

openssl genrsa -out /etc/kubernetes/pki/sa.key 2048
openssl rsa -in /etc/kubernetes/pki/sa.key -pubout -out /etc/kubernetes/pki/sa.pub

将证书发送到其他 master 节点

# 将证书发送到其他 master 节点
for NODE in master-02 master-03
do 
for FILE in $(ls /etc/kubernetes/pki | grep -v etcd)do scp /etc/kubernetes/pki/${FILE} $NODE:/etc/kubernetes/pki/${FILE}donefor FILE in admin.kubeconfig controller-manager.kubeconfig scheduler.kubeconfigdo scp /etc/kubernetes/${FILE} $NODE:/etc/kubernetes/${FILE}done
done# 查看证书
[root@k8s-master01 ~]# ls /etc/kubernetes/pki/
[root@k8s-master01 ~]# ls /etc/kubernetes/pki/ | wc -l
26

三、K8S 系统组件配置

ETCD 配置

master-01-etcd配置

cat > /etc/etcd/etcd.config.yml << EOF 
name: 'master-01'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://192.168.174.143:2380'
listen-client-urls: 'https://192.168.174.143:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://192.168.174.143:2380'
advertise-client-urls: 'https://192.168.174.143:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'master-01=https://192.168.174.143:2380,master-02=https://192.168.174.144:2380,master-03=https://192.168.174.145:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'client-cert-auth: truetrusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'auto-tls: true
peer-transport-security:cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'peer-client-cert-auth: truetrusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF

master-02-etcd配置

cat > /etc/etcd/etcd.config.yml << EOF 
name: 'master-02'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://192.168.174.144:2380'
listen-client-urls: 'https://192.168.174.144:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://192.168.174.144:2380'
advertise-client-urls: 'https://192.168.174.144:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'master-01=https://192.168.174.143:2380,master-02=https://192.168.174.144:2380,master-03=https://192.168.174.145:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'client-cert-auth: truetrusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'auto-tls: true
peer-transport-security:cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'peer-client-cert-auth: truetrusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF

master-03-etcd配置

cat > /etc/etcd/etcd.config.yml << EOF 
name: 'master-03'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://192.168.174.145:2380'
listen-client-urls: 'https://192.168.174.145:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://192.168.174.145:2380'
advertise-client-urls: 'https://192.168.174.145:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'master-01=https://192.168.174.143:2380,master-02=https://192.168.174.144:2380,master-03=https://192.168.174.145:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'client-cert-auth: truetrusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'auto-tls: true
peer-transport-security:cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'peer-client-cert-auth: truetrusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF

创建 service（所有 master 节点操作）

cat > /usr/lib/systemd/system/etcd.service << EOF[Unit]
Description=Etcd Service
Documentation=https://coreos.com/etcd/docs/latest/
After=network.target[Service]
Type=notify
ExecStart=/usr/local/bin/etcd --config-file=/etc/etcd/etcd.config.yml
Restart=on-failure
RestartSec=10
LimitNOFILE=65536[Install]
WantedBy=multi-user.target
Alias=etcd3.serviceEOF

创建 etcd 证书目录

mkdir /etc/kubernetes/pki/etcd
ln -s /etc/etcd/ssl/* /etc/kubernetes/pki/etcd/# 启动 etcd
systemctl daemon-reload
systemctl enable --now etcd.service
systemctl status etcd.service# 查看 etcd 状态
# 如果要用 IPv6 那么把 IPv4 地址修改为 IPv6 即可
export ETCDCTL_API=3
etcdctl --endpoints="192.168.174.143:2379,192.168.174.144:2379,192.168.174.145:2379" --cacert=/etc/kubernetes/pki/etcd/etcd-ca.pem --cert=/etc/kubernetes/pki/etcd/etcd.pem --key=/etc/kubernetes/pki/etcd/etcd-key.pem  endpoint status --write-out=table+----------------------+----------------+---------+---------+-----------+------------+-----------+----------+------------------+--------+
|       ENDPOINT       |      ID        | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFTINDEX|RAFT APPLIED INDEX| ERRORS|
+----------------------+----------------+---------+---------+-----------+------------+-----------+----------+------------------+--------+
| 192.168.174.143:2379 |bbcbc20300419492|  3.5.12 |   20 kB |      true |      false |         2 |        9 |                9 |        |
| 192.168.174.144:2379 |ccb6e8489b090334|  3.5.12 |   20 kB |     false |      false |         2 |        9 |                9 |        |
| 192.168.174.145:2379 |e9fe5fb46961e1e1|  3.5.12 |   20 kB |     false |      false |         2 |        9 |                9 |        |
+----------------------+----------------+---------+---------+-----------+------------+-----------+----------+------------------+--------+

Nginx 配置

在一台编译安装之后传到其他服务器上（所有）

# 安装编译环境
yum install gcc -y# 下载解压 nginx 二进制文件
# wget http://nginx.org/download/nginx-1.25.3.tar.gz
tar xvf nginx-*.tar.gz
cd nginx-1.25.3# 进行编译
./configure --with-stream --without-http --without-http_uwsgi_module --without-http_scgi_module --without-http_fastcgi_module
make && make install # 拷贝编译好的 nginx
node='master-02 master-03 node-01 node-02'
for NODE in $node; do scp -r /usr/local/nginx/ $NODE:/usr/local/nginx/; done# 写入配置文件（在所有主机上执行）
cat > /usr/local/nginx/conf/kube-nginx.conf <<EOF
worker_processes 1;
events {worker_connections  1024;
}
stream {upstream backend {least_conn;hash $remote_addr consistent;server 192.168.174.143:6443        max_fails=3 fail_timeout=30s;server 192.168.174.144:6443        max_fails=3 fail_timeout=30s;server 192.168.174.145:6443        max_fails=3 fail_timeout=30s;}server {listen 127.0.0.1:8443;proxy_connect_timeout 1s;proxy_pass backend;}
}
EOFcat > /etc/systemd/system/kube-nginx.service <<EOF
[Unit]
Description=kube-apiserver nginx proxy
After=network.target
After=network-online.target
Wants=network-online.target[Service]
Type=forking
ExecStartPre=/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/kube-nginx.conf -p /usr/local/nginx -t
ExecStart=/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/kube-nginx.conf -p /usr/local/nginx
ExecReload=/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/kube-nginx.conf -p /usr/local/nginx -s reload
PrivateTmp=true
Restart=always
RestartSec=5
StartLimitInterval=0
LimitNOFILE=65536[Install]
WantedBy=multi-user.target
EOF# 传到所有主机
for i in  $node; do scp /usr/local/nginx/conf/kube-nginx.conf $i:/usr/local/nginx/conf/; scp /etc/systemd/system/kube-nginx.service $i:/etc/systemd/system/; done# 在所有主机执行
systemctl daemon-reload
systemctl enable --now kube-nginx.service
systemctl status kube-nginx.service

其它组件配置

# 所有 k8s 节点创建以下目录
# 在 master01 执行下面这个命令：
ansible ms1-n1 -m shell -a 'mkdir -p /etc/kubernetes/manifests/ /etc/systemd/system/kubelet.service.d /var/lib/kubelet /var/log/kubernetes'
# 也可以一台一台创建for i in ms1 ms2 ms3 n1 n2
do
ssh $i "mkdir -p /etc/kubernetes/manifests/ /etc/systemd/system/kubelet.service.d /var/lib/kubelet /var/log/kubernetes"
done

创建 apiserver（所有 master 节点）

master01 节点配置

# master01 节点配置
cat > /usr/lib/systemd/system/kube-apiserver.service << EOF[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target[Service]
ExecStart=/usr/local/bin/kube-apiserver \\--v=2  \\--allow-privileged=true  \\--bind-address=0.0.0.0  \\--secure-port=6443  \\--advertise-address=192.168.174.143 \\--service-cluster-ip-range=10.96.0.0/12,fd00:1111::/112  \\--service-node-port-range=30000-32767  \\--etcd-servers=https://192.168.174.143:2379,https://192.168.174.144:2379,https://192.168.174.145:2379 \\--etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  \\--etcd-certfile=/etc/etcd/ssl/etcd.pem  \\--etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  \\--client-ca-file=/etc/kubernetes/pki/ca.pem  \\--tls-cert-file=/etc/kubernetes/pki/apiserver.pem  \\--tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  \\--kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  \\--kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  \\--service-account-key-file=/etc/kubernetes/pki/sa.pub  \\--service-account-signing-key-file=/etc/kubernetes/pki/sa.key  \\--service-account-issuer=https://kubernetes.default.svc.cluster.local \\--kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  \\--enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  \--authorization-mode=Node,RBAC  \\--enable-bootstrap-token-auth=true  \\--requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  \\--proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  \\--proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  \\--requestheader-allowed-names=aggregator  \\--requestheader-group-headers=X-Remote-Group  \\--requestheader-extra-headers-prefix=X-Remote-Extra-  \\--requestheader-username-headers=X-Remote-User \\--enable-aggregator-routing=true
Restart=on-failure
RestartSec=10s
LimitNOFILE=65535[Install]
WantedBy=multi-user.targetEOF

master02 节点配置

cat > /usr/lib/systemd/system/kube-apiserver.service << EOF[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target[Service]
ExecStart=/usr/local/bin/kube-apiserver \\--v=2  \\--allow-privileged=true  \\--bind-address=0.0.0.0  \\--secure-port=6443  \\--advertise-address=192.168.174.144 \\--service-cluster-ip-range=10.96.0.0/12,fd00:1111::/112  \\--service-node-port-range=30000-32767  \\--etcd-servers=https://192.168.174.143:2379,https://192.168.174.144:2379,https://192.168.174.145:2379 \\--etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  \\--etcd-certfile=/etc/etcd/ssl/etcd.pem  \\--etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  \\--client-ca-file=/etc/kubernetes/pki/ca.pem  \\--tls-cert-file=/etc/kubernetes/pki/apiserver.pem  \\--tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  \\--kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  \\--kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  \\--service-account-key-file=/etc/kubernetes/pki/sa.pub  \\--service-account-signing-key-file=/etc/kubernetes/pki/sa.key  \\--service-account-issuer=https://kubernetes.default.svc.cluster.local \\--kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  \\--enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  \--authorization-mode=Node,RBAC  \\--enable-bootstrap-token-auth=true  \\--requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  \\--proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  \\--proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  \\--requestheader-allowed-names=aggregator  \\--requestheader-group-headers=X-Remote-Group  \\--requestheader-extra-headers-prefix=X-Remote-Extra-  \\--requestheader-username-headers=X-Remote-User \\--enable-aggregator-routing=true
Restart=on-failure
RestartSec=10s
LimitNOFILE=65535[Install]
WantedBy=multi-user.targetEOF

master03 节点配置

cat > /usr/lib/systemd/system/kube-apiserver.service << EOF[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target[Service]
ExecStart=/usr/local/bin/kube-apiserver \\--v=2  \\--allow-privileged=true  \\--bind-address=0.0.0.0  \\--secure-port=6443  \\--advertise-address=192.168.174.145 \\--service-cluster-ip-range=10.96.0.0/12,fd00:1111::/112  \\--service-node-port-range=30000-32767  \\--etcd-servers=https://192.168.174.143:2379,https://192.168.174.144:2379,https://192.168.174.145:2379 \\--etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  \\--etcd-certfile=/etc/etcd/ssl/etcd.pem  \\--etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  \\--client-ca-file=/etc/kubernetes/pki/ca.pem  \\--tls-cert-file=/etc/kubernetes/pki/apiserver.pem  \\--tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  \\--kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  \\--kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  \\--service-account-key-file=/etc/kubernetes/pki/sa.pub  \\--service-account-signing-key-file=/etc/kubernetes/pki/sa.key  \\--service-account-issuer=https://kubernetes.default.svc.cluster.local \\--kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  \\--enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  \--authorization-mode=Node,RBAC  \\--enable-bootstrap-token-auth=true  \\--requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  \\--proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  \\--proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  \\--requestheader-allowed-names=aggregator  \\--requestheader-group-headers=X-Remote-Group  \\--requestheader-extra-headers-prefix=X-Remote-Extra-  \\--requestheader-username-headers=X-Remote-User \\--enable-aggregator-routing=true
Restart=on-failure
RestartSec=10s
LimitNOFILE=65535[Install]
WantedBy=multi-user.targetEOF

启动 apiServer

systemctl daemon-reload
systemctl enable --now kube-apiserver.service
systemctl status kube-apiserver.service
该配置文件是用于定义Kubernetes API Server的systemd服务的配置。

配置 kube-controller-manager service

# 所有master节点配置，且配置相同
# 172.16.0.0/12为pod网段，按需求设置你自己的网段cat > /usr/lib/systemd/system/kube-controller-manager.service << EOF[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes
After=network.target[Service]
ExecStart=/usr/local/bin/kube-controller-manager \\--v=2 \\--bind-address=0.0.0.0 \\--root-ca-file=/etc/kubernetes/pki/ca.pem \\--cluster-signing-cert-file=/etc/kubernetes/pki/ca.pem \\--cluster-signing-key-file=/etc/kubernetes/pki/ca-key.pem \\--service-account-private-key-file=/etc/kubernetes/pki/sa.key \\--kubeconfig=/etc/kubernetes/controller-manager.kubeconfig \\--leader-elect=true \\--use-service-account-credentials=true \\--node-monitor-grace-period=40s \\--node-monitor-period=5s \\--controllers=*,bootstrapsigner,tokencleaner \\--allocate-node-cidrs=true \\--service-cluster-ip-range=10.96.0.0/12,fd00:1111::/112 \\--cluster-cidr=172.16.0.0/12,fc00:2222::/112 \\--node-cidr-mask-size-ipv4=24 \\--node-cidr-mask-size-ipv6=120 \\--requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pemRestart=always
RestartSec=10s[Install]
WantedBy=multi-user.targetEOFfor i in ms2 ms3
do
scp /usr/lib/systemd/system/kube-controller-manager.service $i:/usr/lib/systemd/system/
done# 启动 kube-controller-manager
systemctl daemon-reload
systemctl enable --now kube-controller-manager.service
systemctl status kube-controller-manager.service# 也可以使用 ansible 执行 3台服务重启
vim manage_kube_controller_manager.yml
---
- name: Manage kube-controller-manager servicehosts: your_target_hosts  # 这里是你要操作的主机组，替换为你实际的主机或主机组become: yes  # 使用超级用户权限执行tasks:- name: Reload systemd manager configurationsystemd:daemon_reload: yes- name: Enable and start kube-controller-manager servicesystemd:name: kube-controller-manager.serviceenabled: yesstate: started- name: Check status of kube-controller-manager servicesystemd:name: kube-controller-manager.servicestate: startedenabled: yesregister: kube_controller_manager_status- name: Show kube-controller-manager service statusdebug:var: kube_controller_manager_statusansible-playbook manage_kube_controller_manager.yml

配置 kube-scheduler service

# 所有 master 节点配置，且配置相同
cat > /usr/lib/systemd/system/kube-scheduler.service << EOF[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes
After=network.target[Service]
ExecStart=/usr/local/bin/kube-scheduler \\--v=2 \\--bind-address=0.0.0.0 \\--leader-elect=true \\--kubeconfig=/etc/kubernetes/scheduler.kubeconfigRestart=always
RestartSec=10s[Install]
WantedBy=multi-user.targetEOF# 传到另外两台master服务器上
for i in ms2 ms3
do
scp /usr/lib/systemd/system/kube-scheduler.service $i:/usr/lib/systemd/system/
done# 启动 kube-scheduler
systemctl daemon-reload
systemctl enable --now kube-scheduler.service
systemctl status kube-scheduler.service

四、TLS Bootstrapping 配置

在 master01 上配置

kubectl config set-cluster kubernetes     \
--certificate-authority=/etc/kubernetes/pki/ca.pem     \
--embed-certs=true     --server=https://127.0.0.1:8443     \
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfigkubectl config set-credentials tls-bootstrap-token-user     \
--token=c8ad9c.2e4d610cf3e7426e \
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfigkubectl config set-context tls-bootstrap-token-user@kubernetes     \
--cluster=kubernetes     \
--user=tls-bootstrap-token-user     \
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfigkubectl config use-context tls-bootstrap-token-user@kubernetes     \
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfigmkdir -p /root/.kube ; cp /etc/kubernetes/admin.kubeconfig /root/.kube/config
# 查看集群状态
kubectl get cs
Warning: v1 ComponentStatus is deprecated in v1.19+
NAME                 STATUS    MESSAGE   ERROR
scheduler            Healthy   ok        
controller-manager   Healthy   ok        
etcd-0               Healthy   ok  cat > bootstrap.secret.yaml << EOF
apiVersion: v1
kind: Secret
metadata:name: bootstrap-token-c8ad9cnamespace: kube-system
type: bootstrap.kubernetes.io/token
stringData:description: "The default bootstrap token generated by 'kubelet '."token-id: c8ad9ctoken-secret: 2e4d610cf3e7426eusage-bootstrap-authentication: "true"usage-bootstrap-signing: "true"auth-extra-groups:  system:bootstrappers:default-node-token,system:bootstrappers:worker,system:bootstrappers:ingress---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:name: kubelet-bootstrap
roleRef:apiGroup: rbac.authorization.k8s.iokind: ClusterRolename: system:node-bootstrapper
subjects:
- apiGroup: rbac.authorization.k8s.iokind: Groupname: system:bootstrappers:default-node-token
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:name: node-autoapprove-bootstrap
roleRef:apiGroup: rbac.authorization.k8s.iokind: ClusterRolename: system:certificates.k8s.io:certificatesigningrequests:nodeclient
subjects:
- apiGroup: rbac.authorization.k8s.iokind: Groupname: system:bootstrappers:default-node-token
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:name: node-autoapprove-certificate-rotation
roleRef:apiGroup: rbac.authorization.k8s.iokind: ClusterRolename: system:certificates.k8s.io:certificatesigningrequests:selfnodeclient
subjects:
- apiGroup: rbac.authorization.k8s.iokind: Groupname: system:nodes
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:annotations:rbac.authorization.kubernetes.io/autoupdate: "true"labels:kubernetes.io/bootstrapping: rbac-defaultsname: system:kube-apiserver-to-kubelet
rules:- apiGroups:- ""resources:- nodes/proxy- nodes/stats- nodes/log- nodes/spec- nodes/metricsverbs:- "*"
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:name: system:kube-apiservernamespace: ""
roleRef:apiGroup: rbac.authorization.k8s.iokind: ClusterRolename: system:kube-apiserver-to-kubelet
subjects:- apiGroup: rbac.authorization.k8s.iokind: Username: kube-apiserver
EOFkubectl create -f bootstrap.secret.yaml# master02  master03 执行以下操作
# 让其他节点也可以使用 kubectl 命令
mkdir -p /root/.kube ; cp /etc/kubernetes/admin.kubeconfig /root/.kube/config

五、Node 配置

1、复制相关证书至 node

# 在 master01 上将证书复制到 node 节点
cd /etc/kubernetes/for NODE in master-02 master-03 node-01 node-02
do 
ssh $NODE mkdir -p /etc/kubernetes/pkifor FILE in pki/ca.pem pki/ca-key.pem pki/front-proxy-ca.pem bootstrap-kubelet.kubeconfig kube-proxy.kubeconfigdoscp /etc/kubernetes/$FILE $NODE:/etc/kubernetes/${FILE}done
done

2、配置 kubelet（所有节点）

# kubelet 配置
# 当使用 docker 作为 Runtimecat > /usr/lib/systemd/system/kubelet.service << EOF[Unit]
Description=Kubernetes Kubelet
Documentation=https://github.com/kubernetes/kubernetes
After=network-online.target firewalld.service cri-docker.service docker.socket containerd.service
Wants=network-online.target
Requires=docker.socket containerd.service[Service]
ExecStart=/usr/local/bin/kubelet \\--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig  \\--kubeconfig=/etc/kubernetes/kubelet.kubeconfig \\--config=/etc/kubernetes/kubelet-conf.yml \\--container-runtime-endpoint=unix:///run/cri-dockerd.sock  \\--node-labels=node.kubernetes.io/node= [Install]
WantedBy=multi-user.target
EOF# IPv6示例
# 若不使用IPv6那么忽略此项即可
# 下方 --node-ip 更换为每个节点的IP即可
# cat > /usr/lib/systemd/system/kubelet.service << EOF
# [Unit]
# Description=Kubernetes Kubelet
# Documentation=https://github.com/kubernetes/kubernetes
# After=network-online.target firewalld.service cri-docker.service docker.socket # containerd.service
# Wants=network-online.target
# Requires=docker.socket containerd.service# [Service]
# ExecStart=/usr/local/bin/kubelet \\
#     --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig  \\
#     --kubeconfig=/etc/kubernetes/kubelet.kubeconfig \\
#     --config=/etc/kubernetes/kubelet-conf.yml \\
#     --container-runtime-endpoint=unix:///run/cri-dockerd.sock  \\
#     --node-labels=node.kubernetes.io/node=   \\
#     --node-ip=192.168.1.31,2408:822a:245:8c01::fab
# [Install]
# WantedBy=multi-user.target
# EOFcat > /etc/kubernetes/kubelet-conf.yml <<EOF
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
address: 0.0.0.0
port: 10250
readOnlyPort: 10255
authentication:anonymous:enabled: falsewebhook:cacheTTL: 2m0senabled: truex509:clientCAFile: /etc/kubernetes/pki/ca.pem
authorization:mode: Webhookwebhook:cacheAuthorizedTTL: 5m0scacheUnauthorizedTTL: 30s
cgroupDriver: systemd
cgroupsPerQOS: true
clusterDNS:
- 10.96.0.10
clusterDomain: cluster.local
containerLogMaxFiles: 5
containerLogMaxSize: 10Mi
contentType: application/vnd.kubernetes.protobuf
cpuCFSQuota: true
cpuManagerPolicy: none
cpuManagerReconcilePeriod: 10s
enableControllerAttachDetach: true
enableDebuggingHandlers: true
enforceNodeAllocatable:
- pods
eventBurst: 10
eventRecordQPS: 5
evictionHard:imagefs.available: 15%memory.available: 100Minodefs.available: 10%nodefs.inodesFree: 5%
evictionPressureTransitionPeriod: 5m0s
failSwapOn: true
fileCheckFrequency: 20s
hairpinMode: promiscuous-bridge
healthzBindAddress: 127.0.0.1
healthzPort: 10248
httpCheckFrequency: 20s
imageGCHighThresholdPercent: 85
imageGCLowThresholdPercent: 80
imageMinimumGCAge: 2m0s
iptablesDropBit: 15
iptablesMasqueradeBit: 14
kubeAPIBurst: 10
kubeAPIQPS: 5
makeIPTablesUtilChains: true
maxOpenFiles: 1000000
maxPods: 110
nodeStatusUpdateFrequency: 10s
oomScoreAdj: -999
podPidsLimit: -1
registryBurst: 10
registryPullQPS: 5
resolvConf: /etc/resolv.conf
rotateCertificates: true
runtimeRequestTimeout: 2m0s
serializeImagePulls: true
staticPodPath: /etc/kubernetes/manifests
streamingConnectionIdleTimeout: 4h0m0s
syncFrequency: 1m0s
volumeStatsAggPeriod: 1m0s
EOF# 启动 kubelet
systemctl daemon-reload
systemctl enable --now kubelet.service
systemctl status kubelet.servicefor i in ms2 ms3 n1 n2
do
scp /usr/lib/systemd/system/kubelet.service $i:/usr/lib/systemd/system/
scp /etc/kubernetes/kubelet-conf.yml $i:/etc/kubernetes/
done
# 或使用如下方式
ansible master-1,node -m copy -a "src=/etc/kubernetes/kubelet-conf.yml dest=/etc/kubernetes/"
ansible master-1,node -m copy -a "src=/usr/lib/systemd/system/kubelet.service dest=/usr/lib/systemd/system/"

3、kube-proxy 配置（所有节点）

# 将 kubeconfig 发送至其他节点
# master-1 执行for NODE in ms2 ms3 n1 n2; do scp /etc/kubernetes/kube-proxy.kubeconfig $NODE:/etc/kubernetes/kube-proxy.kubeconfig; done# 所有 k8s 节点添加 kube-proxy 的 service 文件
cat >  /usr/lib/systemd/system/kube-proxy.service << EOF
[Unit]
Description=Kubernetes Kube Proxy
Documentation=https://github.com/kubernetes/kubernetes
After=network.target[Service]
ExecStart=/usr/local/bin/kube-proxy \\--config=/etc/kubernetes/kube-proxy.yaml \\--cluster-cidr=172.16.0.0/12,fc00:2222::/112 \\--v=2
Restart=always
RestartSec=10s[Install]
WantedBy=multi-user.targetEOF# 所有 k8s节点添加 kube-proxy 的配置
cat > /etc/kubernetes/kube-proxy.yaml << EOF
apiVersion: kubeproxy.config.k8s.io/v1alpha1
bindAddress: 0.0.0.0
clientConnection:acceptContentTypes: ""burst: 10contentType: application/vnd.kubernetes.protobufkubeconfig: /etc/kubernetes/kube-proxy.kubeconfigqps: 5
clusterCIDR: 172.16.0.0/12,fc00:2222::/112
configSyncPeriod: 15m0s
conntrack:max: nullmaxPerCore: 32768min: 131072tcpCloseWaitTimeout: 1h0m0stcpEstablishedTimeout: 24h0m0s
enableProfiling: false
healthzBindAddress: 0.0.0.0:10256
hostnameOverride: ""
iptables:masqueradeAll: falsemasqueradeBit: 14minSyncPeriod: 0ssyncPeriod: 30s
ipvs:masqueradeAll: trueminSyncPeriod: 5sscheduler: "rr"syncPeriod: 30s
kind: KubeProxyConfiguration
metricsBindAddress: 127.0.0.1:10249
mode: "ipvs"
nodePortAddresses: null
oomScoreAdj: -999
portRange: ""
udpIdleTimeout: 250ms
EOFfor NODE in ms2 ms3 n1 n2; do scp /usr/lib/systemd/system/kube-proxy.service $NODE:/usr/lib/systemd/system/kube-proxy.service; done
for NODE in ms2 ms3 n1 n2; do scp /etc/kubernetes/kube-proxy.yaml $NODE:/etc/kubernetes/kube-proxy.yaml; done# 启动 kube-proxy
systemctl daemon-reload
systemctl enable --now kube-proxy.service
systemctl status kube-proxy.service

六、安装网络插件

wget https://github.com/projectcalico/calico/blob/master/manifests/calico-typha.yaml
wget https://mirrors.chenby.cn/https://github.com/projectcalico/calico/blob/master/manifests/calico-typha.yamlcp calico-typha.yaml calico.yaml
vim calico.yaml
# ConfigMap.data.cni_network_config.plugins  处 （默认无需修改）"ipam": {"type": "calico-ipam",},
# DaemonSet.spec.template.spec.initContainers.containers.env 处（默认无需修改）- name: IPvalue: "autodetect"- name: CALICO_IPV4POOL_CIDR  value: "172.16.0.0/12"  # 将配置改为和上方配置的pod网段对应即可# vim calico-ipv6.yaml
# calico-config ConfigMap处
#     "ipam": {
#         "type": "calico-ipam",
#         "assign_ipv4": "true",
#         "assign_ipv6": "true"
#     },
#     - name: IP
#       value: "autodetect"
# 
#     - name: IP6
#       value: "autodetect"
# 
#     - name: CALICO_IPV4POOL_CIDR
#       value: "172.16.0.0/12"
# 
#     - name: CALICO_IPV6POOL_CIDR
#       value: "fc00:2222::/112"
# 
#     - name: FELIX_IPV6SUPPORT
#       value: "true"# 若docker镜像拉不下来，可以使用国内的仓库
sed -i "s#docker.io/calico/#m.daocloud.io/docker.io/calico/#g" calico.yaml 
sed -i "s#docker.io/calico/#m.daocloud.io/docker.io/calico/#g" calico-ipv6.yamlsed -i "s#m.daocloud.io/docker.io/calico/#docker.io/calico/#g" calico.yaml 
sed -i "s#m.daocloud.io/docker.io/calico/#docker.io/calico/#g" calico-ipv6.yaml# 本地没有公网 IPv6 使用 calico.yaml
kubectl apply -f calico.yaml[root@master-01 soft]# kubectl  get pod -A
NAMESPACE     NAME                                       READY   STATUS    RESTARTS   AGE
kube-system   calico-kube-controllers-57758d645c-x6ntz   1/1     Running   0          2d16h
kube-system   calico-node-5ttff                          1/1     Running   0          2d16h
kube-system   calico-node-c4mnd                          1/1     Running   0          2d16h
kube-system   calico-node-q8z7n                          1/1     Running   0          2d16h
kube-system   calico-typha-7f974b9776-jgpt9              1/1     Running   0          2d16h# ./dockertools load -l images/

七、安装 CoreDNS（只在 master01 操作）

安装helm

如果脚本下载失败，使用这个脚本手动上传一下

Helm脚本位置

# 官方下载地址：
[root@k8s-master 10-pod]# curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3
[root@k8s-master 10-pod]# chmod 755 get_helm.sh 
[root@k8s-master 10-pod]# ./get_helm.sh 
Downloading https://get.helm.sh/helm-v3.16.2-linux-amd64.tar.gz
Verifying checksum... Done.
Preparing to install helm into /usr/local/bin
helm installed into /usr/local/bin/helm[root@k8s-master 10-pod]# helm version
version.BuildInfo{Version:"v3.16.2", GitCommit:"13654a52f7c70a143b1dd51416d633e1071faffb", GitTreeState:"clean", GoVersion:"go1.22.7"}[root@k8s-master 10-pod]# helm repo ls
Error: no repositories to show   （为空，因为要初始化charts，仓库  ---- > 相当于是 yum文件中的/etc/yum.repos.d/*.repo文件一样 ）# 初始化
# 当您已经安装好了Helm之后，您可以添加一个chart 仓库。从 Artifact Hub 中查找有效的Helm chart仓库
# 官方指定的    bitnami 是镜像名称   后面是镜像地址
helm repo add bitnami https://charts.bitnami.com/bitnami# 当添加完成，您将可以看到可以被您安装的 charts 列表：
helm repo ls
helm search repo bitnami

使用helm安装 coreDNS

# 下载tgz包
helm repo add coredns https://coredns.github.io/helm
helm pull coredns/coredns
tar xvf coredns-*.tgz
cd coredns/# 修改IP地址
vim values.yaml
cat values.yaml | grep clusterIP:
clusterIP: "10.96.0.10"# 示例
---
service:
# clusterIP: ""
# clusterIPs: []
# loadBalancerIP: ""
# externalIPs: []
# externalTrafficPolicy: ""
# ipFamilyPolicy: ""# The name of the Service# If not set, a name is generated using the fullname templateclusterIP: "10.96.0.10"name: ""annotations: {}
---# 修改为国内源 docker源可选
sed -i "s#coredns/#m.daocloud.io/docker.io/coredns/#g" values.yaml
sed -i "s#registry.k8s.io/#m.daocloud.io/registry.k8s.io/#g" values.yaml# 默认参数安装
helm install  coredns ./coredns/ -n kube-system[root@master-01 soft]# kubectl  get pod -A
kube-system   coredns-798ffd599-79v6v                    1/1     Running   0          2d15h

八、安装 Metrics Server

# 下载 
wget https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
wget https://mirrors.chenby.cn/https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml# 修改配置
vim components.yaml---
# 1- args:- --cert-dir=/tmp- --secure-port=10250- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname- --kubelet-use-node-status-port- --metric-resolution=15s# 新增如下:- --kubelet-insecure-tls- --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem- --requestheader-username-headers=X-Remote-User- --requestheader-group-headers=X-Remote-Group- --requestheader-extra-headers-prefix=X-Remote-Extra-# 2volumeMounts:- mountPath: /tmpname: tmp-dir# 新增如下：- name: ca-sslmountPath: /etc/kubernetes/pki# 3volumes:- emptyDir: {}name: tmp-dir# 新增如下：- name: ca-sslhostPath:path: /etc/kubernetes/pki
---# 修改为国内源 docker源可选
sed -i "s#registry.k8s.io/#m.daocloud.io/registry.k8s.io/#g" *.yaml# 执行部署
kubectl apply -f components.yaml--kubelet-insecure-tls：禁用与 kubelet 的 TLS 证书验证。
--requestheader-client-ca-file：指定用于验证客户端证书的 CA 文件。
--requestheader-username-headers：指定用于传递用户名的请求头字段。
--requestheader-group-headers：指定用于传递用户组的请求头字段。
--requestheader-extra-headers-prefix：指定用于传递额外用户信息的请求头字段前缀。

在这里插入图片描述

九、安装命令补全

yum install bash-completion -y
source /usr/share/bash-completion/bash_completion
source <(kubectl completion bash)
echo "source <(kubectl completion bash)" >> ~/.bashrc

十、高可用验证

安装etcdhelper命令

etcdhelper工具来解码proto格式的内容，etcd是以proto格式存储的

# 先安装go-lang
wget -c https://dl.google.com/go/go1.22.9.linux-amd64.tar.gz
tar -C /usr/local -zxvf  go1.22.9.linux-amd64.tar.gz
vim /etc/profile
#go envrionment
export GOROOT=/usr/local/go
export PATH=$PATH:$GOROOT/bin
#export GOPROXY=http://mirrors.aliyun.com/goproxy/
export GOPROXY=https://goproxy.iosource /etc/profile
go version# 安装etcdhelper工具
[root@k8s-master01 ]# wget https://github.com/openshift/origin/archive/refs/heads/master.zip
[root@k8s-master01 ]# unzip master.zip 
[root@k8s-master01 ]# cd  origin-master/tools/etcdhelper
[root@k8s-master01 etcdhelper]# ls
etcdhelper.go OWNERS README.md
[root@k8s-master01 etcdhelper]# go build etcdhelper.go
[root@k8s-master01 etcdhelper]# ls
etcdhelper etcdhelper.go OWNERS README.md
[root@k8s-master01 etcdhelper]# cp etcdhelper /usr/local/bin/# 然后就可以使用了。  下面是使用方法

# 确认 etcd 高可用
export ETCDCTL_API=3
etcdctl --endpoints="192.168.174.143:2379,192.168.174.144:2379,192.168.174.145:2379" --cacert=/etc/kubernetes/pki/etcd/etcd-ca.pem --cert=/etc/kubernetes/pki/etcd/etcd.pem --key=/etc/kubernetes/pki/etcd/etcd-key.pem  endpoint status --write-out=table# 加个别名
# cat /root/.bashrc
alias ectl='etcdhelper -endpoint "https://192.168.74.143:2379" -key /etc/etcd/ssl/etcd-key.pem  -cert /etc/etcd/ssl/etcd.pem -cacert /etc/etcd/ssl/etcd-ca.pem'source /root/.bashrc
# 查看当前的 schedule 主节点
ectl get /registry/leases/kube-system/kube-scheduler# 查看当前的 controllermanager 主节点
ectl get /registry/leases/kube-system/kube-controller-manager读取 etcd 的方式：
https://github.com/openshift/origin/tree/master/tools/etcdhelper官方解释：
https://github.com/kubernetes/kubernetes/issues/44670

# 如果查看没有其他的几个节点信息
kubectl get nodes
[root@master-01 manifests]# kubectl  get nodes
NAME        STATUS   ROLES    AGE     VERSION
master-01   Ready    <none>   2d22h   v1.29.2
node-01     Ready    <none>   2d22h   v1.29.2# 登录到没有节点的主机上
systemctl  stop kube-proxy.service 
systemctl  stop kubelet
systemctl  stop kube-nginx
# 执行如下操作
cat > /usr/local/nginx/conf/kube-nginx.conf <<EOF
worker_processes 1;
events {worker_connections  1024;
}
stream {upstream backend {least_conn;hash $remote_addr consistent;server 192.168.174.143:6443        max_fails=3 fail_timeout=30s;server 192.168.174.144:6443        max_fails=3 fail_timeout=30s;server 192.168.174.145:6443        max_fails=3 fail_timeout=30s;}server {listen 127.0.0.1:8443;proxy_connect_timeout 1s;proxy_pass backend;}
}
EOF
# 删除错误配置，重新生成
rm -rf /var/lib/kubelet/*
systemctl  start kube-nginx
systemctl  start kube-proxy
systemctl  start kubelet

最新版本 - 二进制安装k8s1.29.2 集群

一、环境初始化

二、K8S 与 ETCD 下载及安装

1、安装 K8S 和 ETCD 二进制文件

2.相关证书生成

生成 ETCD 证书

生成 K8S 相关证书

生成 apiserver 聚合证书

生成 controller-manage 的证书

生成 kube-scheduler 的证书

生成 admin 的证书配置

创建 kube-proxy 证书

创建 ServiceAccount Key ——secret

将证书发送到其他 master 节点

三、K8S 系统组件配置

ETCD 配置

master-01-etcd配置

master-02-etcd配置

master-03-etcd配置

创建 service（ 所有 master 节点操作）

创建 etcd 证书目录

Nginx 配置

其它组件配置

创建 apiserver（所有 master 节点）

master01 节点配置

master02 节点配置

master03 节点配置

启动 apiServer

配置 kube-controller-manager service

配置 kube-scheduler service

四、TLS Bootstrapping 配置

在 master01 上配置

五、Node 配置

1、复制相关证书至 node

2、配置 kubelet（所有节点）

3、kube-proxy 配置（所有节点）

六、安装网络插件

七、安装 CoreDNS（只在 master01 操作）

安装helm

使用helm安装 coreDNS

八、安装 Metrics Server

九、安装命令补全

十、高可用验证

安装etcdhelper命令

相关文章

创建 service（所有 master 节点操作）