操作系统：centos7.9
1、在每个节点安装python环境yum update #安装python2.7 yum install -y python python2、安装ansible
yum install -y ansible3、在部署节点编排K8s安装
3.1 下载工具脚本ezdown，使用kubeasz版本3.0.0
export release=3.0.0
wget https://github.com/easzlab/kubeasz/releases/download/${release}/ezdown
chmod +x ./ezdown
# 使用工具脚本下载
./ezdown -D
#上述脚本运行成功后，所有文件（kubeasz代码、二进制、离线镜像）均已整理好放入目录/etc/kubeasz
3.2 创建集群配置实例
cd /etc/kubeasz/ ln -sv /etc/kubeasz/ezctl /usr/bin/ezctl [root@k8s-master kubeasz]$ezctl new k8s-01 2022-05-23 00:41:54 DEBUG generate custom cluster files in /etc/kubeasz/clusters/k8s-01 2022-05-23 00:41:54 DEBUG set version of common plugins 2022-05-23 00:41:54 DEBUG cluster k8s-01: files successfully created. 2022-05-23 00:41:54 INFO next steps 1: to config '/etc/kubeasz/clusters/k8s-01/hosts' 2022-05-23 00:41:54 INFO next steps 2: to config '/etc/kubeasz/clusters/k8s-01/config.yml' #然后根据提示配置'/etc/kubeasz/clusters/k8s-01/hosts' 和 '/etc/kubeasz/clusters/k8s-01/config.yml'：根据前面节点规划修改hosts 文件和其他集群层面的主要配置选项；其他集群组件等配置项可以在config.yml 文件中修改 #开始安装 如果你对集群安装流程不熟悉，请阅读项目首页 安装步骤 讲解后分步安装，并对 每步都进行验证 # 一键安装 ezctl setup k8s-01 all # 或者分步安装，具体使用 ezctl help setup 查看分步安装帮助信息 # ezctl setup k8s-01 01 # ezctl setup k8s-01 02 # ezctl setup k8s-01 03 # ezctl setup k8s-01 04 ...
[root@k8s-master kubeasz]$cd clusters/k8s-01/
[root@k8s-master kubeasz]$cat clusters/k8s-01/hosts
# 'etcd' cluster should have odd member(s) (1,3,5,...)
[etcd]
10.0.7.1
10.0.7.2
10.0.7.3
# master node(s)
[kube_master]
10.0.7.1
# work node(s)
[kube_node]
10.0.7.2
10.0.7.3
# [optional] harbor server, a private docker registry
# 'NEW_INSTALL': 'yes' to install a harbor server; 'no' to integrate with existed one
# 'SELF_SIGNED_CERT': 'no' you need put files of certificates named harbor.pem and harbor-key.pem in directory 'down'
[harbor]
10.0.7.1 HARBOR_DOMAIN="harbor.yzl.com" NEW_INSTALL=no SELF_SIGNED_CERT=yes
# [optional] loadbalance for accessing k8s from outside
[ex_lb]
10.0.7.6 LB_ROLE=backup EX_APISERVER_VIP=192.168.1.250 EX_APISERVER_PORT=8443
10.0.7.7 LB_ROLE=master EX_APISERVER_VIP=192.168.1.250 EX_APISERVER_PORT=8443
# [optional] ntp server for the cluster
[chrony]
#192.168.1.1
[all:vars]
# --------- Main Variables ---------------
# Cluster container-runtime supported: docker, containerd
CONTAINER_RUNTIME="docker"
# Network plugins supported: calico, flannel, kube-router, cilium, kube-ovn
CLUSTER_NETWORK="calico"
# Service proxy mode of kube-proxy: 'iptables' or 'ipvs'
PROXY_MODE="ipvs"
# K8S Service CIDR, not overlap with node(host) networking
SERVICE_CIDR="10.68.0.0/16"
# Cluster CIDR (Pod CIDR), not overlap with node(host) networking
CLUSTER_CIDR="172.20.0.0/16"
# NodePort Range
NODE_PORT_RANGE="30000-32767"
# Cluster DNS Domain
CLUSTER_DNS_DOMAIN="cluster.local."
# -------- Additional Variables (don't change the default value right now) ---
# Binaries Directory
bin_dir="/opt/kube/bin"
# Deploy Directory (kubeasz workspace)
base_dir="/etc/kubeasz"
# Directory for a specific cluster
cluster_dir="{{ base_dir }}/clusters/k8s-01"
# CA and other components cert/key Directory
ca_dir="/etc/kubernetes/ssl"
[root@k8s-master kubeasz]$
[root@k8s-master kubeasz]$./ezctl setup k8s-01 all
4、验证集群
[root@k8s-master ~]$kubectl get pods -A NAMESPACE NAME READY STATUS RESTARTS AGE kube-system calico-kube-controllers-5677ffd49-rcpz2 1/1 Running 0 6m41s kube-system calico-node-5jfpk 1/1 Running 3 6m41s kube-system calico-node-qhqrk 1/1 Running 0 6m41s kube-system calico-node-sddx9 1/1 Running 0 6m41s kube-system coredns-5787695b7f-84jt8 1/1 Running 0 5m49s kube-system dashboard-metrics-scraper-79c5968bdc-mzwms 1/1 Running 0 3m36s kube-system kubernetes-dashboard-c4c6566d6-7n4b6 1/1 Running 1 3m36s kube-system metrics-server-8568cf894b-z4r54 1/1 Running 0 5m38s kube-system node-local-dns-8sqsw 1/1 Running 0 5m49s kube-system node-local-dns-96fqr 1/1 Running 0 5m49s kube-system node-local-dns-kjf4f 1/1 Running 0 5m49s [root@k8s-master ~]$kubectl get nodes NAME STATUS ROLES AGE VERSION 10.0.7.1 Ready,SchedulingDisabled master 11m v1.20.2 10.0.7.2 Ready node 10m v1.20.2 10.0.7.3 Ready node 10m v1.20.2
