1006 lines
32 KiB
Markdown
1006 lines
32 KiB
Markdown
<center><h1>基于二进制构建Kubernetes高可用集群</h1></center>
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作者：行癫（盗版必究）
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------
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## 一：环境介绍
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#### 1.主机规划
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| IP地址 | 主机名 | 主机配置 | 主机角色 | 软件列表 |
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| :---------: | :---------------------------: | :------: | :------: | :----------------------------------------------------------: |
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| 10.9.12.60 | xingdiancloud-native-master-a | 2C4G | master | kube-apiserver、kube-controller-manager、kube-scheduler、etcd、kubectl、haproxy、keepalive |
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| 10.9.12.64 | xingdiancloud-native-master-b | 2C4G | master | kube-apiserver、kube-controller-manager、kube-scheduler、etcd、kubectl、haproxy、keepalive |
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| 10.9.12.66 | xingdiancloud-native-node-a | 2C4G | worker | kubelet、kube-proxy、docker |
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| 10.9.12.65 | xingdiancloud-native-node-b | 2C4G | worker | kubelet、kube-proxy、docker |
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| 10.9.12.67 | xingdiancloud-native-node-c | 2C4G | worker | kubelet、kube-proxy、docker |
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| 10.9.12.100 | / | / | VIP | |
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#### 2.软件版本
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| 软件名称 | 版本 | 备注 |
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| :--------: | :-----: | :-------: |
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| CentOS | 7.9 | |
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| kubernetes | v1.28.0 | |
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| etcd | v3.5.11 | |
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| calico | v3.26.4 | |
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| coredns | v1.10.1 | |
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| docker | 24.0.7 | |
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| haproxy | 5.18 | YUM源默认 |
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| keepalived | 3.5 | YUM源默认 |
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#### 3.网络分配
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| 网络名称 | 网段 | 备注 |
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| :---------: | :-----------: | :--: |
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| Node网络 | 10.9.12.0/24 | |
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| Service网络 | 10.96.0.0/16 | |
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| Pod网络 | 10.244.0.0/16 | |
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## 二：集群准备
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#### 1.修改主机名
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```shell
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[root@xingdiancloud-native-master-a ~]# nmcli g hostname xingdiancloud-native-master-a
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```
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备注：
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所有节点按照规划一次修改
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#### 2.地址解析
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```shell
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[root@xingdiancloud-native-master-a ~]# cat >> /etc/hosts << EOF
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10.9.12.60 xingdiancloud-native-master-a
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10.9.12.64 xingdiancloud-native-master-b
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10.9.12.66 xingdiancloud-native-node-a
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10.9.12.65 xingdiancloud-native-node-b
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10.9.12.67 xingdiancloud-native-node-c
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EOF
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```
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备注：
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所有节点按照规划一次修改
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#### 3.防火墙和Selinux
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全部关闭及永久关闭
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此处略
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备注：
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所有节点按照规划一次修改
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#### 4.交换分区设置
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```shell
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[root@xingdiancloud-native-master-a ~]# swapoff -a
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[root@xingdiancloud-native-master-a ~]# sed -ri 's/.*swap.*/#&/' /etc/fstab
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[root@xingdiancloud-native-master-a ~]# echo "vm.swappiness=0" >> /etc/sysctl.conf
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[root@xingdiancloud-native-master-a ~]# sysctl -p
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```
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备注：
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所有节点按照规划一次修改
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#### 5.时间同步
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```shell
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[root@xingdiancloud-native-master-a ~]# yum -y install ntpdate
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[root@xingdiancloud-native-master-a ~]# ntpdate -b ntp.aliyun.com
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制定时间同步计划任务
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[root@xingdiancloud-native-master-a ~]# crontab -e
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0 */5 * * * /usr/sbin/ntpdate -b ntp.aliyun.com
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```
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备注：
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所有节点按照规划一次修改
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#### 6.ipvs管理工具安装及模块加载
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```shell
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[root@xingdiancloud-native-master-a ~]# yum -y install ipvsadm ipset sysstat conntrack libseccomp
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#配置ipvasdm模块加载方式
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#添加需要加载的模块
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[root@xingdiancloud-native-master-a ~]# cat > /etc/sysconfig/modules/ipvs.modules << EOF
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#!/bin/bash
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modprobe -- ip_vs
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modprobe -- ip_vs_rr
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modprobe -- ip_vs_wrr
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modprobe -- ip_vs_sh
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modprobe -- nf_conntrack
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EOF
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#授权，运行，检查是否加载
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[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
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```
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备注：
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所有节点按照规划一次修改
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#### 7.Linux内核优化
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添加网桥过滤及内核转发配置文件
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```shell
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[root@xingdiancloud-native-master-a ~]# cat > /etc/sysctl.d/k8s.conf <<EOF
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net.ipv4.ip_forward = 1
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net.bridge.bridge-nf-call-iptables = 1
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net.bridge.bridge-nf-call-ip6tables = 1
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EOF
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```
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加载br_netfilter模块
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```shell
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[root@xingdiancloud-native-master-a ~]# modprobe br_netfilter
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```
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查看验证
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```shell
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[root@xingdiancloud-native-master-a ~]# sysctl -p /etc/sysctl.d/k8s.conf
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net.ipv4.ip_forward = 1
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net.bridge.bridge-nf-call-iptables = 1
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net.bridge.bridge-nf-call-ip6tables = 1
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```
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永久性加载模块并设置为开机启动
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```shell
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[root@xingdiancloud-native-master-a ~]# cat > /etc/modules-load.d/containerd.conf << EOF
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overlay
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br_netfilter
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EOF
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[root@xingdiancloud-native-master-a ~]# systemctl enable --now systemd-modules-load.service
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```
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查看是否加载
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```shell
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[root@xingdiancloud-native-master-a ~]# lsmod | grep br_netfilter
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br_netfilter 28672 0
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```
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#### 8.配置免密
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在xingdiancloud-native-master-a上操作即可，复制公钥到其他节点
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```shell
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[root@xingdiancloud-native-master-a ~]# ssh-keygen
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Generating public/private rsa key pair.
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Enter file in which to save the key (/root/.ssh/id_rsa):
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Created directory '/root/.ssh'.
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Enter passphrase (empty for no passphrase):
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Enter same passphrase again:
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Your identification has been saved in /root/.ssh/id_rsa.
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Your public key has been saved in /root/.ssh/id_rsa.pub.
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The key fingerprint is:
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SHA256:40/tHc966yq63YQ8YK84udBoZMqkCeZB5XTj8QaSOZo root@k8s-master1
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The key's randomart image is:
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+---[RSA 2048]----+
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| +o= |
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| +++ = |
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| .o... o |
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|.E . |
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|.o . o So |
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|+ * + o...+.. |
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| + o + .o .=... |
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| . .o.ooo+. +.|
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| oo++.oo==+|
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+----[SHA256]-----+
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[root@xingdiancloud-native-master-a ~]# ssh-copy-id root@xingdiancloud-native-master-a
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[root@xingdiancloud-native-master-a ~]# ssh-copy-id root@xingdiancloud-native-node-b
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[root@xingdiancloud-native-master-a ~]# ssh-copy-id root@xingdiancloud-native-node-a
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[root@xingdiancloud-native-master-a ~]# ssh-copy-id root@xingdiancloud-native-node-c
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```
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## 三：部署负载均衡高可用
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#### 1.安装haproxy与keepalived
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在HA部署的节点上运行，本次HA部署在xingdiancloud-master-a,xingdiancloud-master-b上
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```
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[root@xingdiancloud-native-master-a ~]# yum -y install haproxy keepalived
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```
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#### 2.HAProxy配置
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在HA部署的节点上运行， HAProxy配置所有节点相同
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```shell
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[root@xingdiancloud-native-master-a ~]# cat >/etc/haproxy/haproxy.cfg<<"EOF"
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global
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maxconn 2000
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ulimit-n 16384
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log 127.0.0.1 local0 err
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stats timeout 30s
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defaults
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log global
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mode http
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option httplog
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timeout connect 5000
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timeout client 50000
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timeout server 50000
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timeout http-request 15s
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timeout http-keep-alive 15s
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frontend monitor-in
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bind *:33305
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mode http
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option httplog
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monitor-uri /monitor
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frontend xingdiancloud-master
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bind 0.0.0.0:6443
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bind 127.0.0.1:6443
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mode tcp
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option tcplog
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tcp-request inspect-delay 5s
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default_backend xingdiancloud-master
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backend xingdiancloud-master
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mode tcp
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option tcplog
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option tcp-check
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balance roundrobin
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default-server inter 10s downinter 5s rise 2 fall 2 slowstart 60s maxconn 250 maxqueue 256 weight 100
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server xingdiancloud-master-a 10.9.12.60:6442 check
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server xingdiancloud-master-b 10.9.12.64:6442 check
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EOF
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```
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#### 3.KeepAlived配置
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主从配置不一致，需要注意
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Master：
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```shell
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[root@xingdiancloud-native-master-a ~]# cat >/etc/keepalived/keepalived.conf<<"EOF"
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! Configuration File for keepalived
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global_defs {
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router_id LVS_DEVEL
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script_user root
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enable_script_security
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}
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vrrp_script chk_apiserver {
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script "/etc/keepalived/check_apiserver.sh"
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interval 5
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weight -5
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fall 2
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rise 1
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}
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vrrp_instance VI_1 {
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state MASTER
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interface ens3
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mcast_src_ip 10.9.12.60
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virtual_router_id 51
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priority 100
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advert_int 2
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authentication {
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auth_type PASS
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auth_pass K8SHA_KA_AUTH
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}
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virtual_ipaddress {
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10.9.12.100
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}
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track_script {
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chk_apiserver
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}
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}
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EOF
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```
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Backup：
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```shell
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[root@xingdiancloud-native-master-b ~]# cat >/etc/keepalived/keepalived.conf<<"EOF"
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! Configuration File for keepalived
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global_defs {
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router_id LVS_DEVEL
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script_user root
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enable_script_security
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}
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vrrp_script chk_apiserver {
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script "/etc/keepalived/check_apiserver.sh"
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interval 5
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weight -5
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fall 2
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rise 1
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}
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vrrp_instance VI_1 {
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state BACKUP
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interface ens3
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mcast_src_ip 10.9.12.64
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virtual_router_id 51
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priority 99
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advert_int 2
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authentication {
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auth_type PASS
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auth_pass K8SHA_KA_AUTH
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}
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virtual_ipaddress {
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10.9.12.100
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}
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track_script {
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chk_apiserver
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}
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}
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EOF
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```
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#### 4.健康检测脚本
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Master和Backup节点均要有
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```shell
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[root@xingdiancloud-native-master-a ~]# cat > /etc/keepalived/check_apiserver.sh <<"EOF"
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#!/bin/bash
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err=0
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for k in $(seq 1 2)
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do
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check_code=$(pgrep haproxy)
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if [[ $check_code == "" ]]; then
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err=$(expr $err + 1)
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sleep 1
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continue
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else
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err=0
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break
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fi
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done
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if [[ $err != "0" ]]; then
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echo "systemctl stop keepalived"
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/usr/bin/systemctl stop keepalived
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exit 1
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else
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exit 0
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fi
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EOF
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[root@xingdiancloud-native-master-a ~]# chmod +x /etc/keepalived/check_apiserver.sh
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```
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#### 5.启动服务并验证
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```shell
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[root@xingdiancloud-native-master-a ~]# systemctl daemon-reload
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[root@xingdiancloud-native-master-a ~]# systemctl enable --now haproxy
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[root@xingdiancloud-native-master-a ~]# systemctl enable --now keepalived
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```
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注意：
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依次启动Master节点和Backup节点
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验证VIP：
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```shell
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[root@xingdiancloud-native-master-a ~]# ip a s
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1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
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link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
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inet 127.0.0.1/8 scope host lo
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valid_lft forever preferred_lft forever
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inet6 ::1/128 scope host
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valid_lft forever preferred_lft forever
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2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
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link/ether 00:0c:29:09:7a:32 brd ff:ff:ff:ff:ff:ff
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inet 10.9.12.60/24 brd 192.168.198.255 scope global noprefixroute ens33
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valid_lft forever preferred_lft forever
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inet 10.9.12.100/32 scope global ens33
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valid_lft forever preferred_lft forever
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inet6 fe80::6d0d:5af:b421:6829/64 scope link noprefixroute
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valid_lft forever preferred_lft forever
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inet6 fe80::2dcd:beb6:b077:827d/64 scope link tentative noprefixroute dadfailed
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valid_lft forever preferred_lft forever
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```
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测试网页是否正常显示：
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## 四：ETCD集群部署
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注意：
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以下操作在xingdiancloud-native-master-a上操作
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#### 1.创建工作目录
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```shell
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[root@xingdiancloud-native-master-a ~]# mkdir -p /data/k8s-work
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```
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#### 2.安装cfssl工具
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https://github.com/cloudflare/cfssl/releases
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```shell
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[root@xingdiancloud-native-master-a k8s-work]# ll
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total 40232
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-rw-r--r-- 1 root root 16659824 Mar 9 2022 cfssl_1.6.1_linux_amd64
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-rw-r--r-- 1 root root 13502544 Mar 9 2022 cfssl-certinfo_1.6.1_linux_amd64
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-rw-r--r-- 1 root root 11029744 Mar 9 2022 cfssljson_1.6.1_linux_amd64
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# 授权可执行权限
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[root@xingdiancloud-native-master-a k8s-work]# chmod +x cfssl*
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[root@xingdiancloud-native-master-a k8s-work]# ll
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total 40232
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-rwxr-xr-x 1 root root 16659824 Mar 9 2022 cfssl_1.6.1_linux_amd64
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-rwxr-xr-x 1 root root 13502544 Mar 9 2022 cfssl-certinfo_1.6.1_linux_amd64
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-rwxr-xr-x 1 root root 11029744 Mar 9 2022 cfssljson_1.6.1_linux_amd64
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# 修改名称，放到/usr/local/bin目录下
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[root@xingdiancloud-native-master-a k8s-work]# mv cfssl_1.6.1_linux_amd64 /usr/local/bin/cfssl
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[root@xingdiancloud-native-master-a k8s-work]# mv cfssl-certinfo_1.6.1_linux_amd64 /usr/local/bin/cfssl-certinfo
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[root@xingdiancloud-native-master-a k8s-work]# mv cfssljson_1.6.1_linux_amd64 /usr/local/bin/cfssljson
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# 安装完成，查看cfssl版本
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[root@k8s-master1 k8s-work]# cfssl version
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Version: 1.6.1
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Runtime: go1.12.12
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```
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#### 3.创建CA证书
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注意：
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CA作为证书颁发机构
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xingdiancloud-native-master-a 节点
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##### 3.1 配置ca证书请求文件
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```shell
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[root@xingdiancloud-native-master-a k8s-work]# cat > ca-csr.json <<"EOF"
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{
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"CN": "kubernetes",
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"key": {
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"algo": "rsa",
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"size": 2048
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},
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"names": [
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{
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"C": "CN",
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"ST": "Beijing",
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"L": "Beijing",
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"O": "kubemsb",
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"OU": "CN"
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||
}
|
||
],
|
||
"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
|
||
|
||
|
||
|
||
|
||
|
||
```
|
||
#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/
|
||
```
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|