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kubernetes-x/kubernetes-HA/基于二进制构建Kubernetes高可用集群.md

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上传文件至 'kubernetes-HA'
2024-06-16 21:06:41 +08:00
<center><h1>基于二进制构建Kubernetes高可用集群</h1></center>
作者：行癫（盗版必究）
------
## 一：环境介绍
#### 1.主机规划
| IP地址 | 主机名 | 主机配置 | 主机角色 | 软件列表 |
| :---------: | :---------------------------: | :------: | :------: | :----------------------------------------------------------: |
| 10.9.12.60 | xingdiancloud-native-master-a | 2C4G | master | kube-apiserver、kube-controller-manager、kube-scheduler、etcd、kubectl、haproxy、keepalive |
| 10.9.12.64 | xingdiancloud-native-master-b | 2C4G | master | kube-apiserver、kube-controller-manager、kube-scheduler、etcd、kubectl、haproxy、keepalive |
| 10.9.12.66 | xingdiancloud-native-node-a | 2C4G | worker | kubelet、kube-proxy、docker |
| 10.9.12.65 | xingdiancloud-native-node-b | 2C4G | worker | kubelet、kube-proxy、docker |
| 10.9.12.67 | xingdiancloud-native-node-c | 2C4G | worker | kubelet、kube-proxy、docker |
| 10.9.12.100 | / | / | VIP | |
#### 2.软件版本
| 软件名称 | 版本 | 备注 |
| :--------: | :-----: | :-------: |
| CentOS | 7.9 | |
| kubernetes | v1.28.0 | |
| etcd | v3.5.11 | |
| calico | v3.26.4 | |
| coredns | v1.10.1 | |
| docker | 24.0.7 | |
| haproxy | 5.18 | YUM源默认 |
| keepalived | 3.5 | YUM源默认 |
#### 3.网络分配
| 网络名称 | 网段 | 备注 |
| :---------: | :-----------: | :--: |
| Node网络 | 10.9.12.0/24 | |
| Service网络 | 10.96.0.0/16 | |
| Pod网络 | 10.244.0.0/16 | |
## 二：集群准备
#### 1.修改主机名
```shell
[root@xingdiancloud-native-master-a ~]# nmcli g hostname xingdiancloud-native-master-a
```
备注：
​ 所有节点按照规划一次修改
#### 2.地址解析
```shell
[root@xingdiancloud-native-master-a ~]# cat >> /etc/hosts << EOF
10.9.12.60 xingdiancloud-native-master-a
10.9.12.64 xingdiancloud-native-master-b
10.9.12.66 xingdiancloud-native-node-a
10.9.12.65 xingdiancloud-native-node-b
10.9.12.67 xingdiancloud-native-node-c
EOF
```
备注：
​ 所有节点按照规划一次修改
#### 3.防火墙和Selinux
​ 全部关闭及永久关闭
​ 此处略
备注：
​ 所有节点按照规划一次修改
#### 4.交换分区设置
```shell
[root@xingdiancloud-native-master-a ~]# swapoff -a
[root@xingdiancloud-native-master-a ~]# sed -ri 's/.*swap.*/#&/' /etc/fstab
[root@xingdiancloud-native-master-a ~]# echo "vm.swappiness=0" >> /etc/sysctl.conf
[root@xingdiancloud-native-master-a ~]# sysctl -p
```
备注：
​ 所有节点按照规划一次修改
#### 5.时间同步
```shell
[root@xingdiancloud-native-master-a ~]# yum -y install ntpdate
[root@xingdiancloud-native-master-a ~]# ntpdate -b ntp.aliyun.com
制定时间同步计划任务
[root@xingdiancloud-native-master-a ~]# crontab -e
0 */5 * * * /usr/sbin/ntpdate -b ntp.aliyun.com
```
备注：
​ 所有节点按照规划一次修改
#### 6.ipvs管理工具安装及模块加载
```shell
[root@xingdiancloud-native-master-a ~]# yum -y install ipvsadm ipset sysstat conntrack libseccomp
#配置ipvasdm模块加载方式
#添加需要加载的模块
[root@xingdiancloud-native-master-a ~]# 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
#授权，运行，检查是否加载
[root@xingdiancloud-native-master-a ~]# chmod 755 /etc/sysconfig/modules/ipvs.modules && bash /etc/sysconfig/modules/ipvs.modules && lsmod | grep -e ip_vs -e nf_conntrack
```
备注：
​ 所有节点按照规划一次修改
#### 7.Linux内核优化
添加网桥过滤及内核转发配置文件
```shell
[root@xingdiancloud-native-master-a ~]# cat > /etc/sysctl.d/k8s.conf <<EOF
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
EOF
```
加载br_netfilter模块
```shell
[root@xingdiancloud-native-master-a ~]# modprobe br_netfilter
```
查看验证
```shell
[root@xingdiancloud-native-master-a ~]# sysctl -p /etc/sysctl.d/k8s.conf
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
```
永久性加载模块并设置为开机启动
```shell
[root@xingdiancloud-native-master-a ~]# cat > /etc/modules-load.d/containerd.conf << EOF
overlay
br_netfilter
EOF
[root@xingdiancloud-native-master-a ~]# systemctl enable --now systemd-modules-load.service
```
查看是否加载
```shell
[root@xingdiancloud-native-master-a ~]# lsmod | grep br_netfilter
br_netfilter 28672 0
```
#### 8.配置免密
在xingdiancloud-native-master-a上操作即可，复制公钥到其他节点
```shell
[root@xingdiancloud-native-master-a ~]# ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Created directory '/root/.ssh'.
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:
SHA256:40/tHc966yq63YQ8YK84udBoZMqkCeZB5XTj8QaSOZo root@k8s-master1
The key's randomart image is:
+---[RSA 2048]----+
| +o= |
| +++ = |
| .o... o |
|.E . |
|.o . o So |
|+ * + o...+.. |
| + o + .o .=... |
| . .o.ooo+. +.|
| oo++.oo==+|
+----[SHA256]-----+
[root@xingdiancloud-native-master-a ~]# ssh-copy-id root@xingdiancloud-native-master-a
[root@xingdiancloud-native-master-a ~]# ssh-copy-id root@xingdiancloud-native-node-b
[root@xingdiancloud-native-master-a ~]# ssh-copy-id root@xingdiancloud-native-node-a
[root@xingdiancloud-native-master-a ~]# ssh-copy-id root@xingdiancloud-native-node-c
```
## 三：部署负载均衡高可用
#### 1.安装haproxy与keepalived
在HA部署的节点上运行，本次HA部署在xingdiancloud-master-a,xingdiancloud-master-b上
```
[root@xingdiancloud-native-master-a ~]# yum -y install haproxy keepalived
```
#### 2.HAProxy配置
在HA部署的节点上运行， HAProxy配置所有节点相同
```shell
[root@xingdiancloud-native-master-a ~]# cat >/etc/haproxy/haproxy.cfg<<"EOF"
global
maxconn 2000
ulimit-n 16384
log 127.0.0.1 local0 err
stats timeout 30s
defaults
log global
mode http
option httplog
timeout connect 5000
timeout client 50000
timeout server 50000
timeout http-request 15s
timeout http-keep-alive 15s
frontend monitor-in
bind *:33305
mode http
option httplog
monitor-uri /monitor
frontend xingdiancloud-master
bind 0.0.0.0:6443
bind 127.0.0.1:6443
mode tcp
option tcplog
tcp-request inspect-delay 5s
default_backend xingdiancloud-master
backend xingdiancloud-master
mode tcp
option tcplog
option tcp-check
balance roundrobin
default-server inter 10s downinter 5s rise 2 fall 2 slowstart 60s maxconn 250 maxqueue 256 weight 100
server xingdiancloud-master-a 10.9.12.60:6442 check
server xingdiancloud-master-b 10.9.12.64:6442 check
EOF
```
#### 3.KeepAlived配置
主从配置不一致，需要注意
Master：
```shell
[root@xingdiancloud-native-master-a ~]# cat >/etc/keepalived/keepalived.conf<<"EOF"
! Configuration File for keepalived
global_defs {
router_id LVS_DEVEL
script_user root
enable_script_security
}
vrrp_script chk_apiserver {
script "/etc/keepalived/check_apiserver.sh"
interval 5
weight -5
fall 2
rise 1
}
vrrp_instance VI_1 {
state MASTER
interface ens3
mcast_src_ip 10.9.12.60
virtual_router_id 51
priority 100
advert_int 2
authentication {
auth_type PASS
auth_pass K8SHA_KA_AUTH
}
virtual_ipaddress {
10.9.12.100
}
track_script {
chk_apiserver
}
}
EOF
```
Backup：
```shell
[root@xingdiancloud-native-master-b ~]# cat >/etc/keepalived/keepalived.conf<<"EOF"
! Configuration File for keepalived
global_defs {
router_id LVS_DEVEL
script_user root
enable_script_security
}
vrrp_script chk_apiserver {
script "/etc/keepalived/check_apiserver.sh"
interval 5
weight -5
fall 2
rise 1
}
vrrp_instance VI_1 {
state BACKUP
interface ens3
mcast_src_ip 10.9.12.64
virtual_router_id 51
priority 99
advert_int 2
authentication {
auth_type PASS
auth_pass K8SHA_KA_AUTH
}
virtual_ipaddress {
10.9.12.100
}
track_script {
chk_apiserver
}
}
EOF
```
#### 4.健康检测脚本
Master和Backup节点均要有
```shell
[root@xingdiancloud-native-master-a ~]# cat > /etc/keepalived/check_apiserver.sh <<"EOF"
#!/bin/bash
err=0
for k in $(seq 1 2)
do
check_code=$(pgrep haproxy)
if [[ $check_code == "" ]]; then
err=$(expr $err + 1)
sleep 1
continue
else
err=0
break
fi
done
if [[ $err != "0" ]]; then
echo "systemctl stop keepalived"
/usr/bin/systemctl stop keepalived
exit 1
else
exit 0
fi
EOF
[root@xingdiancloud-native-master-a ~]# chmod +x /etc/keepalived/check_apiserver.sh
```
#### 5.启动服务并验证
```shell
[root@xingdiancloud-native-master-a ~]# systemctl daemon-reload
[root@xingdiancloud-native-master-a ~]# systemctl enable --now haproxy
[root@xingdiancloud-native-master-a ~]# systemctl enable --now keepalived
```
注意：
​ 依次启动Master节点和Backup节点
验证VIP：
```shell
[root@xingdiancloud-native-master-a ~]# ip a s
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:09:7a:32 brd ff:ff:ff:ff:ff:ff
inet 10.9.12.60/24 brd 192.168.198.255 scope global noprefixroute ens33
valid_lft forever preferred_lft forever
inet 10.9.12.100/32 scope global ens33
valid_lft forever preferred_lft forever
inet6 fe80::6d0d:5af:b421:6829/64 scope link noprefixroute
valid_lft forever preferred_lft forever
inet6 fe80::2dcd:beb6:b077:827d/64 scope link tentative noprefixroute dadfailed
valid_lft forever preferred_lft forever
```
测试网页是否正常显示：
![image-20240616182636019](https://xingdian-home.oss-cn-beijing.aliyuncs.com/imagesimage-20240616182636019.png)
## 四：ETCD集群部署
注意：
​ 以下操作在xingdiancloud-native-master-a上操作
#### 1.创建工作目录
```shell
[root@xingdiancloud-native-master-a ~]# mkdir -p /data/k8s-work
```
#### 2.安装cfssl工具
​ https://github.com/cloudflare/cfssl/releases
```shell
[root@xingdiancloud-native-master-a k8s-work]# ll
total 40232
-rw-r--r-- 1 root root 16659824 Mar 9 2022 cfssl_1.6.1_linux_amd64
-rw-r--r-- 1 root root 13502544 Mar 9 2022 cfssl-certinfo_1.6.1_linux_amd64
-rw-r--r-- 1 root root 11029744 Mar 9 2022 cfssljson_1.6.1_linux_amd64
# 授权可执行权限
[root@xingdiancloud-native-master-a k8s-work]# chmod +x cfssl*
[root@xingdiancloud-native-master-a k8s-work]# ll
total 40232
-rwxr-xr-x 1 root root 16659824 Mar 9 2022 cfssl_1.6.1_linux_amd64
-rwxr-xr-x 1 root root 13502544 Mar 9 2022 cfssl-certinfo_1.6.1_linux_amd64
-rwxr-xr-x 1 root root 11029744 Mar 9 2022 cfssljson_1.6.1_linux_amd64
# 修改名称，放到/usr/local/bin目录下
[root@xingdiancloud-native-master-a k8s-work]# mv cfssl_1.6.1_linux_amd64 /usr/local/bin/cfssl
[root@xingdiancloud-native-master-a k8s-work]# mv cfssl-certinfo_1.6.1_linux_amd64 /usr/local/bin/cfssl-certinfo
[root@xingdiancloud-native-master-a k8s-work]# mv cfssljson_1.6.1_linux_amd64 /usr/local/bin/cfssljson
# 安装完成，查看cfssl版本
[root@k8s-master1 k8s-work]# cfssl version
Version: 1.6.1
Runtime: go1.12.12
```
#### 3.创建CA证书
注意：
​ CA作为证书颁发机构
​ xingdiancloud-native-master-a 节点
##### 3.1 配置ca证书请求文件
```shell
[root@xingdiancloud-native-master-a k8s-work]# cat > ca-csr.json <<"EOF"
{
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "kubemsb",
"OU": "CN"
}
],
"ca": {
"expiry": "87600h"
}
}
EOF
```
##### 3.2 创建ca证书
```shell
[root@xingdiancloud-native-master-a k8s-work]# cfssl gencert -initca ca-csr.json | cfssljson -bare ca
2024/01/04 09:22:43 [INFO] generating a new CA key and certificate from CSR
2024/01/04 09:22:43 [INFO] generate received request
2024/01/04 09:22:43 [INFO] received CSR
2024/01/04 09:22:43 [INFO] generating key: rsa-2048
2024/01/04 09:22:43 [INFO] encoded CSR
2024/01/04 09:22:43 [INFO] signed certificate with serial number 338731219198113317417686336532940600662573621163
#输出ca.csr ca-key.pem ca.pem
[root@xingdiancloud-native-master-a k8s-work]# ll
total 16
-rw-r--r-- 1 root root 1045 Jan 4 09:22 ca.csr
-rw-r--r-- 1 root root 256 Jan 4 09:22 ca-csr.json
-rw------- 1 root root 1679 Jan 4 09:22 ca-key.pem
-rw-r--r-- 1 root root 1310 Jan 4 09:22 ca.pem
```
##### 3.3 配置ca证书策略
```shell
[root@xingdiancloud-native-master-a k8s-work]# cfssl print-defaults config > ca-config.json
cat > ca-config.json <<"EOF"
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"kubernetes": {
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
],
"expiry": "87600h"
}
}
}
}
EOF
```
#### 4.创建ETCD证书
##### 4.1 配置etcd请求文件
注意：
​ 57-59为预留IP
```
[root@xingdiancloud-native-master-a k8s-work]# cat > etcd-csr.json <<"EOF"
{
"CN": "etcd",
"hosts": [
"127.0.0.1",
"10.9.12.64",
"10.9.12.60",
"10.9.12.59",
"10.9.12.58",
"10.9.12.57"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "kubemsb",
"OU": "CN"
}]
}
EOF
```
##### 4.2 生成etcd证书
```shell
[root@xingdiancloud-native-master-a k8s-work]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes etcd-csr.json | cfssljson -bare etcd
2024/01/04 10:18:44 [INFO] generate received request
2024/01/04 10:18:44 [INFO] received CSR
2024/01/04 10:18:44 [INFO] generating key: rsa-2048
2024/01/04 10:18:44 [INFO] encoded CSR
2024/01/04 10:18:44 [INFO] signed certificate with serial number 615580008866301102078218902811936499168508210128
```
注意：
​ 生成etcd.csr、etcd-key.pem、etcd.pem
#### 5.部署ETCD集群
##### 5.1 下载etcd软件包
```
https://github.com/etcd-io/etcd/releases/download/v3.5.11/etcd-v3.5.11-linux-amd64.tar.gz
```
##### 5.2 安装etcd软件
```shell
#解压etcd源码包
[root@xingdiancloud-native-master-a k8s-work]# tar -xf etcd-v3.5.11-linux-amd64.tar.gz
[root@xingdiancloud-native-master-a k8s-work]# cd etcd-v3.5.11-linux-amd64
[root@xingdiancloud-native-master-a etcd-v3.5.11-linux-amd64]# ll
total 54896
drwxr-xr-x 3 528287 89939 40 Dec 7 18:30 Documentation
-rwxr-xr-x 1 528287 89939 23535616 Dec 7 18:30 etcd
-rwxr-xr-x 1 528287 89939 17739776 Dec 7 18:30 etcdctl
-rwxr-xr-x 1 528287 89939 14864384 Dec 7 18:30 etcdutl
-rw-r--r-- 1 528287 89939 42066 Dec 7 18:30 README-etcdctl.md
-rw-r--r-- 1 528287 89939 7359 Dec 7 18:30 README-etcdutl.md
-rw-r--r-- 1 528287 89939 9394 Dec 7 18:30 README.md
-rw-r--r-- 1 528287 89939 7896 Dec 7 18:30 READMEv2-etcdctl.md
#把etcd执行文件拷贝到/usr/local/bin目录下，后面配置文件都指定在这个文件执行命令
[root@xingdiancloud-native-master-a etcd-v3.5.11-linux-amd64]# cp etcd* /usr/local/bin/
#分发到其他节点
[root@xingdiancloud-native-master-a etcd-v3.5.11-linux-amd64]# scp etcd* xingdiancloud-native-master-b:/usr/local/bin/
etcd 100% 22MB 53.1MB/s 00:00
etcdctl 100% 17MB 48.6MB/s 00:00
etcdutl 100% 14MB 60.6MB/s 00:00
```
##### 5.3 创建配置文件
```shell
[root@xingdiancloud-native-master-a k8s-work]# mkdir /etc/etcd
```
xingdiancloud-native-master-a 配置：
```shell
[root@xingdiancloud-native-master-a k8s-work]# cat > /etc/etcd/etcd.conf <<EOF
#[Member]
ETCD_NAME="etcd1"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://10.9.12.60:2380"
ETCD_LISTEN_CLIENT_URLS="https://10.9.12.60:2379,http://127.0.0.1:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.9.12.60:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://10.9.12.60:2379"
ETCD_INITIAL_CLUSTER="etcd1=https://10.9.12.60:2380,etcd2=https://10.9.12.64:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
EOF
```
参数说明
```shell
ETCD_NAME：节点名称，集群中唯一
ETCD_DATA_DIR：数据目录
ETCD_LISTEN_PEER_URLS：集群通信监听地址
ETCD_LISTEN_CLIENT_URLS：客户端访问监听地址
ETCD_INITIAL_ADVERTISE_PEER_URLS：集群通告地址
ETCD_ADVERTISE_CLIENT_URLS：客户端通告地址
ETCD_INITIAL_CLUSTER：集群节点地址
ETCD_INITIAL_CLUSTER_TOKEN：集群Token
ETCD_INITIAL_CLUSTER_STATE：加入集群的当前状态，new是新集群，existing表示加入已有集群
```
xingdiancloud-native-master-b 配置：
```shell
[root@xingdiancloud-native-master-a k8s-work]# cat > /etc/etcd/etcd.conf <<"EOF"
#[Member]
ETCD_NAME="etcd2"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://10.9.12.64:2380"
ETCD_LISTEN_CLIENT_URLS="https://10.9.12.64:2379,http://127.0.0.1:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.9.12.64:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://10.9.12.64:2379"
ETCD_INITIAL_CLUSTER="etcd1=https://10.9.12.60:2380,etcd2=https://10.9.12.64:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
EOF
```
##### 5.4 创建服务配置文件
```shell
[root@xingdiancloud-native-master-a k8s-work]# mkdir -p /etc/etcd/ssl
[root@xingdiancloud-native-master-a k8s-work]# mkdir -p /var/lib/etcd/default.etcd
```
```shell
[root@xingdiancloud-native-master-a etcd]# cd /data/k8s-work
[root@xingdiancloud-native-master-a k8s-work]# ll
total 19896
-rw-r--r-- 1 root root 356 Jan 4 10:03 ca-config.json
-rw-r--r-- 1 root root 1045 Jan 4 09:22 ca.csr
-rw-r--r-- 1 root root 256 Jan 4 09:22 ca-csr.json
-rw------- 1 root root 1679 Jan 4 09:22 ca-key.pem
-rw-r--r-- 1 root root 1310 Jan 4 09:22 ca.pem
-rw-r--r-- 1 root root 1078 Jan 4 10:18 etcd.csr
-rw-r--r-- 1 root root 331 Jan 4 10:16 etcd-csr.json
-rw------- 1 root root 1679 Jan 4 10:18 etcd-key.pem
-rw-r--r-- 1 root root 1452 Jan 4 10:18 etcd.pem
drwxr-xr-x 3 528287 89939 163 Dec 7 18:30 etcd-v3.5.11-linux-amd64
-rw-r--r-- 1 root root 20334735 Dec 7 18:36 etcd-v3.5.11-linux-amd64.tar.gz
#拷贝生成的etcd,ca证书到对应ssl目录
[root@xingdiancloud-native-master-a k8s-work]# cp ca*.pem /etc/etcd/ssl
[root@xingdiancloud-native-master-a k8s-work]# cp etcd*.pem /etc/etcd/ssl
#分发证书到其他节点
[root@xingdiancloud-native-master-a k8s-work]# scp ca*.pem xingdiancloud-native-master-b:/etc/etcd/ssl
ca-key.pem 100% 1679 1.4MB/s 00:00
ca.pem 100% 1310 1.0MB/s 00:00
[root@xingdiancloud-native-master-a k8s-work]# scp etcd*.pem xingdiancloud-native-master-b:/etc/etcd/ssl
etcd-key.pem 100% 1679 1.1MB/s 00:00
etcd.pem 100% 1452 1.2MB/s 00:00
```
##### 5.5 生成etcd启动文件
注意：
​ 所有etcd
```shell
[root@xingdiancloud-native-master-a k8s-work]# cat > /etc/systemd/system/etcd.service <<"EOF"
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target
[Service]
Type=notify
EnvironmentFile=-/etc/etcd/etcd.conf
WorkingDirectory=/var/lib/etcd/
ExecStart=/usr/local/bin/etcd \
--cert-file=/etc/etcd/ssl/etcd.pem \
--key-file=/etc/etcd/ssl/etcd-key.pem \
--trusted-ca-file=/etc/etcd/ssl/ca.pem \
--peer-cert-file=/etc/etcd/ssl/etcd.pem \
--peer-key-file=/etc/etcd/ssl/etcd-key.pem \
--peer-trusted-ca-file=/etc/etcd/ssl/ca.pem \
--peer-client-cert-auth \
--client-cert-auth
Restart=on-failure
RestartSec=5
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
EOF
```
##### 5.6 启动etcd集群
注意：
​ 依次启动
```shell
[root@xingdiancloud-native-master-a k8s-work]# systemctl daemon-reload
[root@xingdiancloud-native-master-a k8s-work]# systemctl enable --now etcd.service
[root@xingdiancloud-native-master-a k8s-work]# systemctl status etcd
● etcd.service - Etcd Server
Loaded: loaded (/etc/systemd/system/etcd.service; enabled; vendor preset: disabled)
Active: active (running) since Thu 2024-01-04 11:21:03 CST; 1min 15s ago
Main PID: 4515 (etcd)
CGroup: /system.slice/etcd.service
└─4515 /usr/local/bin/etcd --cert-file=/etc/etcd/ssl/etcd.pem --key-file=/etc/etcd/ssl/etcd-key.pem --trusted-ca-file=/etc/etcd/ssl/ca.pem --peer-cert...
Jan 04 11:21:03 xingdiancloud-native-master-a etcd[4515]: {"level":"info","ts":"2024-01-04T11:21:03.193129+0800","caller":"api/capability.go:75","msg":"enabled capabilit...on":"3.0"}
Jan 04 11:21:03 xingdiancloud-native-master-a etcd[4515]: {"level":"info","ts":"2024-01-04T11:21:03.19358+0800","caller":"etcdserver/server.go:2066","msg":"published local member ...
Jan 04 11:21:03 xingdiancloud-native-master-a etcd[4515]: {"level":"info","ts":"2024-01-04T11:21:03.1937+0800","caller":"embed/serve.go:103","msg":"ready to serve client requests"}
Jan 04 11:21:03 xingdiancloud-native-master-a etcd[4515]: {"level":"info","ts":"2024-01-04T11:21:03.194023+0800","caller":"embed/serve.go:103","msg":"ready to serve client requests"}
Jan 04 11:21:03 xingdiancloud-native-master-a etcd[4515]: {"level":"info","ts":"2024-01-04T11:21:03.194473+0800","caller":"embed/serve.go:187","msg":"serving client traf...0.1:2379"}
Jan 04 11:21:03 xingdiancloud-native-master-a systemd[1]: Started Etcd Server.
Jan 04 11:21:03 xingdiancloud-native-master-a etcd[4515]: {"level":"info","ts":"2024-01-04T11:21:03.195005+0800","caller":"etcdmain/main.go:44","msg":"notifying init daemon"}
Jan 04 11:21:03 xingdiancloud-native-master-a etcd[4515]: {"level":"info","ts":"2024-01-04T11:21:03.195052+0800","caller":"etcdmain/main.go:50","msg":"successfully notif...t daemon"}
Jan 04 11:21:03 xingdiancloud-native-master-a etcd[4515]: {"level":"info","ts":"2024-01-04T11:21:03.196251+0800","caller":"embed/serve.go:250","msg":"serving client traf...146:2379"}
Jan 04 11:21:04 xingdiancloud-native-master-a etcd[4515]: {"level":"info","ts":"2024-01-04T11:21:04.065509+0800","caller":"membership/cluster.go:576","msg":"updated clus...to":"3.5"}
Hint: Some lines were ellipsized, use -l to show in full.
```
##### 5.7 验证集群状态
![image-20240616204328332](https://xingdian-home.oss-cn-beijing.aliyuncs.com/imagesimage-20240616204328332.png)
![image-20240616204354173](https://xingdian-home.oss-cn-beijing.aliyuncs.com/imagesimage-20240616204354173.png)
```
#IS LEADER 为true的为主节点
[xingdiancloud-native-master-a etcd]# ETCDCTL_API=3 /usr/local/bin/etcdctl --write-out=table --cacert=/etc/etcd/ssl/ca.pem --cert=/etc/etcd/ssl/etcd.pem --key=/etc/etcd/ssl/etcd-key.pem --endpoints=https://10.9.12.60:2379,https://10.9.12.64:2379 endpoint status
+------------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| ENDPOINT | ID | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS |
+------------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| https://10.9.12.60:2379 | f79986bfdb812e09 | 3.5.11 | 20 kB | true | false | 2 | 9 | 9 | |
| https://10.9.12.64:2379 | 3ed6f5bbee8d7853 | 3.5.11 | 20 kB | false | false | 2 | 9 | 9 | |
+------------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
```
## 五：Kubernetes集群部署
#### 1.Kubernetes软件包下载
```shell
[root@xingdiancloud-native-master-a k8s-work]# wget https://dl.k8s.io/v1.28.0/kubernetes-server-linux-amd64.tar.gz
```
#### 2.Kubernetes软件包安装
```shell
[root@xingdiancloud-native-master-a k8s-work]# tar -xvf kubernetes-server-linux-amd64.tar.gz
[root@xingdiancloud-native-master-a k8s-work]# cd kubernetes/server/bin/
[root@xingdiancloud-native-master-a bin]# cp kube-apiserver kube-controller-manager kube-scheduler kubectl /usr/local/bin/
```
#### 3.Kubernetes软件分发
```shell
[root@xingdiancloud-native-master-a bin]# scp kube-apiserver kube-controller-manager kube-scheduler kubectl xingdiancloud-native-master-b:/usr/local/bin/
```
#### 4.在集群节点上创建目录
注意：
​ Master节点创建
```shell
[root@xingdiancloud-native-master-a bin]# mkdir -p /etc/kubernetes/
[root@xingdiancloud-native-master-a bin]# mkdir -p /etc/kubernetes/ssl
[root@xingdiancloud-native-master-a bin]# mkdir -p /var/log/kubernetes
```
#### 5.部署api-server
##### 5.1 创建apiserver证书请求文件
```shell
[root@xingdiancloud-native-master-a k8s-work]# cat > kube-apiserver-csr.json << "EOF"
{
"CN": "kubernetes",
"hosts": [
"127.0.0.1",
"10.9.12.60",
"10.9.12.64",
"10.9.12.66",
"10.9.12.67",
"10.9.12.65",
"10.9.12.59",
"10.9.12.58",
"10.9.12.57",
"10.9.12.100",
"10.96.0.1",
"kubernetes",
"kubernetes.default",
"kubernetes.default.svc",
"kubernetes.default.svc.cluster",
"kubernetes.default.svc.cluster.local"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "kubemsb",
"OU": "CN"
}
]
}
EOF
```
##### 5.2 生成apiserver证书及token文件
注意：
​ 生成kube-apiserver.csr、kube-apiserver-key.pem、kube-apiserver.pem
```shell
[root@xingdiancloud-native-master-a k8s-work]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-apiserver-csr.json | cfssljson -bare kube-apiserver
```
生成token.csv
```shell
[root@xingdiancloud-native-master-a k8s-work]# cat > token.csv << EOF
$(head -c 16 /dev/urandom | od -An -t x | tr -d ' '),kubelet-bootstrap,10001,"system:kubelet-bootstrap"
EOF
```
##### 5.3 创建apiserver服务配置文件
```shell
[root@xingdiancloud-native-master-a k8s-work]# cat > /etc/kubernetes/kube-apiserver.conf << "EOF"
KUBE_APISERVER_OPTS="--enable-admission-plugins=NamespaceLifecycle,NodeRestriction,LimitRanger,ServiceAccount,DefaultStorageClass,ResourceQuota \
--anonymous-auth=false \
--bind-address=10.9.12.60 \
--advertise-address=10.9.12.60 \
--secure-port=6442 \
--authorization-mode=Node,RBAC \
--runtime-config=api/all=true \
--enable-bootstrap-token-auth \
--service-cluster-ip-range=10.96.0.0/16 \
--token-auth-file=/etc/kubernetes/token.csv \
--service-node-port-range=30000-32767 \
--tls-cert-file=/etc/kubernetes/ssl/kube-apiserver.pem \
--tls-private-key-file=/etc/kubernetes/ssl/kube-apiserver-key.pem \
--client-ca-file=/etc/kubernetes/ssl/ca.pem \
--kubelet-client-certificate=/etc/kubernetes/ssl/kube-apiserver.pem \
--kubelet-client-key=/etc/kubernetes/ssl/kube-apiserver-key.pem \
--service-account-key-file=/etc/kubernetes/ssl/ca-key.pem \
--service-account-signing-key-file=/etc/kubernetes/ssl/ca-key.pem \
--service-account-issuer=api \
--etcd-cafile=/etc/etcd/ssl/ca.pem \
--etcd-certfile=/etc/etcd/ssl/etcd.pem \
--etcd-keyfile=/etc/etcd/ssl/etcd-key.pem \
--etcd-servers=https://10.9.12.60:2379,https://10.9.12.64:2379 \
--allow-privileged=true \
--apiserver-count=3 \
--audit-log-maxage=30 \
--audit-log-maxbackup=3 \
--audit-log-maxsize=100 \
--audit-log-path=/var/log/kube-apiserver-audit.log \
--event-ttl=1h \
--v=4"
EOF
```
##### 5.4 创建apiserver服务管理配置文件
```shell
[root@xingdiancloud-native-master-a k8s-work]# cat > /etc/systemd/system/kube-apiserver.service << "EOF"
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=etcd.service
Wants=etcd.service
[Service]
EnvironmentFile=-/etc/kubernetes/kube-apiserver.conf
ExecStart=/usr/local/bin/kube-apiserver $KUBE_APISERVER_OPTS
Restart=on-failure
RestartSec=5
Type=notify
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
EOF
```
##### 5.5 同步文件到集群master节点
```shell
[root@xingdiancloud-native-master-a k8s-work]# cp ca*.pem /etc/kubernetes/ssl/
[root@xingdiancloud-native-master-a k8s-work]# cp kube-apiserver*.pem /etc/kubernetes/ssl/
[root@xingdiancloud-native-master-a k8s-work]# cp token.csv /etc/kubernetes/
[root@xingdiancloud-native-master-a k8s-work]# scp /etc/kubernetes/ssl/ca*.pem xingdiancloud-native-master-b:/etc/kubernetes/ssl
[root@xingdiancloud-native-master-a k8s-work]# scp /etc/kubernetes/ssl/kube-apiserver*.pem xingdiancloud-native-master-b:/etc/kubernetes/ssl
[root@xingdiancloud-native-master-a k8s-work]# scp /etc/kubernetes/token.csv xingdiancloud-native-master-b:/etc/kubernetes
```
需要修改为对应主机的ip地址
```shell
[root@xingdiancloud-native-master-a k8s-work]# scp /etc/kubernetes/kube-apiserver.conf xingdiancloud-native-master-b:/etc/kubernetes/kube-apiserver.conf
```
拷贝启动文件
```shell
[root@xingdiancloud-native-master-a k8s-work]# scp /etc/systemd/system/kube-apiserver.service xingdiancloud-native-master-b:/etc/systemd/system/kube-apiserver.service
```
##### 5.6 启动apiserver服务
注意：
​ 依次启动 apiserver 服务
```shell
[root@xingdiancloud-native-master-a k8s-work]# systemctl daemon-reload
[root@xingdiancloud-native-master-a k8s-work]# systemctl enable --now kube-apiserver
[root@xingdiancloud-native-master-a k8s-work]# systemctl status kube-apiserver
# 测试
[root@xingdiancloud-native-master-a k8s-work]# curl --insecure https://110.9.12.60:6442/
[root@xingdiancloud-native-master-a k8s-work]# curl --insecure https://10.9.12.64:6442/
```
![image-20240616205911766](https://xingdian-home.oss-cn-beijing.aliyuncs.com/imagesimage-20240616205911766.png)
![image-20240616205923792](https://xingdian-home.oss-cn-beijing.aliyuncs.com/imagesimage-20240616205923792.png)