k3s 集群搭建

一、环境准备

1、所有节点执行

setenforce 0
systemctl stop firewalld
systemctl disable firewalld

2、命名

vim /etc/hosts
192.168.1.31 k3s01
192.168.1.32 k3s02
192.168.1.33 k3s03

3、免密

.......

二、安装

1、创建目录

https://get.k3s.io/
https://github.com/k3s-io
k3s-airgap-images-amd64.tar
k3s

[root@k3s01-03 ~]# sudo mkdir -p /var/lib/rancher/k3s/agent/images/
[root@k3s01-03 ~]# sudo cp k3s-airgap-images-amd64.tar /var/lib/rancher/k3s/agent/images/
[root@k3s01-03 ~]# sudo cp k3s /usr/local/bin

二、安装

INSTALL_K3S_SKIP_DOWNLOAD=true ./install.sh

k3s server --help
--cluster-cidr  //pod ip
--service-cidr  //service ip
--cluster-dns   // cluster-dns
 --advertise-address //api-server

3、node节点加入集群

cat /var/lib/rancher/k3s/server/node-token
INSTALL_K3S_SKIP_DOWNLOAD=true K3S_URL=https://myserver:6443 K3S_TOKEN=mynodetoken ./install.sh

三、卸载

安装失败卸载

server节点卸载
sh /usr/local/bin/k3s-uninstall.sh
agent节点卸载
sh /usr/local/bin/k3s-agent-uninstall.sh

卸载k3s ingress
vim  /etc/systemd/system/k3s.service
ExecStart=/usr/local/bin/k3s \
    server \
    '--cluster-cidr' \
    '172.16.0.0/16' \
    '--service-cidr' \
    '172.16.252.0/22' \
    '--cluster-dns' \
    '172.16.253.254' \
        --disable traefik \                   //禁用
        --disable traefik-crd \             //禁用

systemctl daemon-reload && service k3s restart