├── LICENSE ├── README.md ├── README_EN.md └── install.sh /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # k8s-install 2 | ## [中文](README.md) [English](README_EN.md) 3 | 4 | 最新版 k8s 快速搭建脚本, 自适应国内外网络环境, 无法连接谷歌源自动切换成国内源(aliyun)来安装 5 | 支持 **CentOS 7+/Debian 9+/Ubuntu 16+** 6 | 7 | 三步即可快速搭建k8s集群 8 | 9 | ## 1. master节点初始化 10 | master 节点服务器运行: 11 | ``` 12 | # use flannel network 13 | source <(curl -sL https://k8s-install.netlify.app/install.sh) --flannel 14 | ``` 15 | 或者 16 | 17 | ``` 18 | # use calico network 19 | source <(curl -sL https://k8s-install.netlify.app/install.sh) --calico 20 | ``` 21 | 22 | 运行脚本会自动初始化(kubeadm init), 最后生成 'kubeadm join'命令 23 | 24 | ## 2. slave节点安装 25 | slave 节点服务器运行: 26 | ``` 27 | source <(curl -sL https://k8s-install.netlify.app/install.sh) 28 | ``` 29 | 30 | ## 3. 加入集群 31 | slave 节点运行第一步生成的 'kubeadm join xxx' 32 | 33 | --- 34 | 35 | 可以加入参数'--hostname xxx'来同时设置服务器的hostname, 举个栗子: 36 | ``` 37 | source <(curl -sL https://k8s-install.netlify.app/install.sh) --flannel --hostname master_test 38 | ``` 39 | PS: 所有机器的hostname不一样集群才能搭建成功 40 | 41 | ## 验证结果 42 | 在master服务器上运行: 43 | 1. `kubectl get nodes`, 所有节点都是ready 44 | 2. `kubectl get pods -n kube-system`, 所有Pod READY状态都是1/1 45 | 46 | 同时符合以上两点即代表k8s集群搭建成功! 47 | 48 | ## 命令行参数列表 49 | ``` 50 | k8s_install.sh [-h|--help] [options] 51 | --flannel 使用flannel网络, 同时设置当前服务器为Master节点 52 | --calico 使用calico网络, 同时设置当前服务器为Master节点 53 | --hostname [hostname] 设置服务器hostname 54 | -v, --version [version] 安装特定版本的k8s 55 | ``` 56 | 57 | ## 注意 58 | k8s 从1.24版本开始默认不支持docker, 得使用[cri-dockerd](https://github.com/Mirantis/cri-dockerd)才能支持, 因为cri-dockerd国内vps不好安装(从github下载文件), 所以从k8s 1.24版本开始改为用containerd来起k8s(还是会安装docker, 只不过用的containerd是用docker安装后带来的版本) 59 | -------------------------------------------------------------------------------- /README_EN.md: -------------------------------------------------------------------------------- 1 | # k8s-install 2 | ## [中文](README.md) [English](README_EN.md) 3 | 4 | auto install latest docker && k8s 5 | support **CentOS 7+/Debian 9+/Ubuntu 16+** 6 | 7 | three step to quickly create k8s Cluster 8 | 9 | ## 1. init master node 10 | master node run: 11 | ``` 12 | # use flannel network 13 | source <(curl -sL https://k8s-install.netlify.app/install.sh) --flannel 14 | ``` 15 | or 16 | 17 | ``` 18 | # use calico network 19 | source <(curl -sL https://k8s-install.netlify.app/install.sh) --calico 20 | ``` 21 | 22 | it will init master node and create 'kubeadm join xxx' command 23 | 24 | ## 2. install slave node 25 | slave node run 26 | ``` 27 | source <(curl -sL https://k8s-install.netlify.app/install.sh) 28 | ``` 29 | 30 | ## 3. join cluster 31 | slave node run first step left command 'kubeadm join xxx' 32 | 33 | --- 34 | u can also set machine hostname by pass '--hostname xxx' param, for example: 35 | ``` 36 | source <(curl -sL https://k8s-install.netlify.app/install.sh) --flannel --hostname master_test 37 | ``` 38 | tip: every machine must have different hostname to create cluster 39 | 40 | ## check result 41 | master node run: 42 | 1. `kubectl get nodes`, all node status is ready 43 | 2. `kubectl get pods -n kube-system`, all pod status is 1/1 44 | 45 | all check pass means create k8s cluster success! 46 | 47 | ## command line 48 | ``` 49 | k8s_install.sh [-h|--help] [options] 50 | --flannel use flannel network, and set this node as master 51 | --calico use calico network, and set this node as master 52 | --hostname [HOSTNAME] set hostname 53 | -v, --version [VERSION] install special version k8s 54 | ``` 55 | 56 | ## attentions 57 | begin with k8s 1.24, k8s cri will use containerd to replace docker 58 | -------------------------------------------------------------------------------- /install.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | # Author: Jrohy 3 | # Github: https://github.com/Jrohy/k8s-install 4 | 5 | # cancel centos alias 6 | [[ -f /etc/redhat-release ]] && unalias -a 7 | 8 | #######color code######## 9 | red="31m" 10 | green="32m" 11 | yellow="33m" 12 | blue="36m" 13 | fuchsia="35m" 14 | 15 | google_urls=( 16 | packages.cloud.google.com 17 | k8s.gcr.io 18 | gcr.io 19 | ) 20 | 21 | mirror_source="registry.cn-hangzhou.aliyuncs.com/google_containers" 22 | 23 | can_google=1 24 | 25 | is_master=0 26 | 27 | network="" 28 | 29 | k8s_version="" 30 | 31 | color_echo(){ 32 | echo -e "\033[$1${@:2}\033[0m" 33 | } 34 | 35 | ip_is_connect(){ 36 | ping -c2 -i0.3 -W1 $1 &>/dev/null 37 | if [ $? -eq 0 ];then 38 | return 0 39 | else 40 | return 1 41 | fi 42 | } 43 | 44 | run_command(){ 45 | echo "" 46 | local command=$1 47 | echo -e "\033[32m$command\033[0m" 48 | echo $command|bash 49 | } 50 | 51 | set_hostname(){ 52 | local hostname=$1 53 | if [[ $hostname =~ '_' ]];then 54 | color_echo $yellow "hostname can't contain '_' character, auto change to '-'.." 55 | hostname=`echo $hostname|sed 's/_/-/g'` 56 | fi 57 | echo "set hostname: `color_echo $blue $hostname`" 58 | echo "127.0.0.1 $hostname" >> /etc/hosts 59 | run_command "hostnamectl --static set-hostname $hostname" 60 | } 61 | 62 | #######get params######### 63 | while [[ $# > 0 ]];do 64 | case "$1" in 65 | --hostname) 66 | set_hostname $2 67 | shift 68 | ;; 69 | -v|--version) 70 | k8s_version=`echo "$2"|sed 's/v//g'` 71 | echo "prepare install k8s version: $(color_echo $green $k8s_version)" 72 | shift 73 | ;; 74 | --flannel) 75 | echo "use flannel network, and set this node as master" 76 | network="flannel" 77 | is_master=1 78 | ;; 79 | --calico) 80 | echo "use calico network, and set this node as master" 81 | network="calico" 82 | is_master=1 83 | ;; 84 | -h|--help) 85 | echo "Usage: $0 [options]" 86 | echo "Options:" 87 | echo " --flannel use flannel network, and set this node as master" 88 | echo " --calico use calico network, and set this node as master" 89 | echo " --hostname [hostname] set hostname" 90 | echo " -v, --version [version]: install special version k8s" 91 | echo " -h, --help: find help" 92 | echo "" 93 | exit 0 94 | shift # past argument 95 | ;; 96 | *) 97 | # unknown option 98 | ;; 99 | esac 100 | shift # past argument or value 101 | done 102 | ############################# 103 | 104 | check_sys() { 105 | #检查是否为Root 106 | [ $(id -u) != "0" ] && { color_echo ${red} "Error: You must be root to run this script"; exit 1; } 107 | 108 | #检查CPU核数 109 | [[ `cat /proc/cpuinfo |grep "processor"|wc -l` == 1 && $is_master == 1 ]] && { color_echo ${red} "master node cpu number should be >= 2!"; exit 1;} 110 | 111 | #检查系统信息 112 | if [[ -e /etc/redhat-release ]];then 113 | if [[ $(cat /etc/redhat-release | grep Fedora) ]];then 114 | os='Fedora' 115 | package_manager='dnf' 116 | else 117 | os='CentOS' 118 | package_manager='yum' 119 | fi 120 | elif [[ $(cat /etc/issue | grep Debian) ]];then 121 | os='Debian' 122 | package_manager='apt-get' 123 | elif [[ $(cat /etc/issue | grep Ubuntu) ]];then 124 | os='Ubuntu' 125 | package_manager='apt-get' 126 | else 127 | color_echo ${red} "Not support os, Please reinstall os and retry!" 128 | exit 1 129 | fi 130 | 131 | [[ `cat /etc/hostname` =~ '_' ]] && set_hostname `cat /etc/hostname` 132 | 133 | echo "Checking machine network(access google)..." 134 | for ((i=0;i<${#google_urls[*]};i++)) 135 | do 136 | ip_is_connect ${google_urls[$i]} 137 | if [[ ! $? -eq 0 ]]; then 138 | color_echo ${yellow} "server can't access google source, switch to chinese source(aliyun).." 139 | can_google=0 140 | break 141 | fi 142 | done 143 | } 144 | 145 | #安装依赖 146 | install_dependent(){ 147 | if [[ ${os} == 'CentOS' || ${os} == 'Fedora' ]];then 148 | ${package_manager} install bash-completion -y 149 | else 150 | ${package_manager} update 151 | ${package_manager} install bash-completion apt-transport-https -y 152 | fi 153 | } 154 | 155 | setup_docker(){ 156 | ## 修改cgroupdriver 157 | if [[ ! -e /etc/docker/daemon.json || -z `cat /etc/docker/daemon.json|grep systemd` ]];then 158 | ## see https://kubernetes.io/docs/setup/production-environment/container-runtimes/ 159 | mkdir -p /etc/docker 160 | if [[ ${os} == 'CentOS' || ${os} == 'Fedora' ]];then 161 | if [[ $can_google == 1 ]];then 162 | cat > /etc/docker/daemon.json < /etc/docker/daemon.json < /etc/docker/daemon.json < /etc/docker/daemon.json < /etc/docker/daemon.json < /etc/containerd/config.toml 246 | sed -i 's/SystemdCgroup = false/SystemdCgroup = true/g' /etc/containerd/config.toml 247 | systemctl restart containerd 248 | systemctl enable containerd 249 | } 250 | 251 | prepare_work() { 252 | ## Centos设置 253 | if [[ ${os} == 'CentOS' || ${os} == 'Fedora' ]];then 254 | if [[ `systemctl list-units --type=service|grep firewalld` ]];then 255 | systemctl disable firewalld.service 256 | systemctl stop firewalld.service 257 | fi 258 | cat < /etc/sysctl.d/k8s.conf 259 | net.bridge.bridge-nf-call-ip6tables = 1 260 | net.bridge.bridge-nf-call-iptables = 1 261 | EOF 262 | sysctl --system 263 | fi 264 | ## 禁用SELinux 265 | if [ -s /etc/selinux/config ] && grep 'SELINUX=enforcing' /etc/selinux/config; then 266 | sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config 267 | setenforce 0 268 | fi 269 | ## 关闭swap 270 | swapoff -a 271 | sed -i 's/.*swap.*/#&/' /etc/fstab 272 | 273 | ## 安装最新版docker 274 | if [[ ! $(type docker 2>/dev/null) ]];then 275 | color_echo ${yellow} "docker no install, auto install latest docker..." 276 | source <(curl -sL https://docker-install.netlify.app/install.sh) -s 277 | fi 278 | 279 | setup_docker 280 | 281 | setup_containerd 282 | } 283 | 284 | install_k8s_base() { 285 | if [[ $os == 'Fedora' || $os == 'CentOS' ]];then 286 | cat>>/etc/yum.repos.d/kubernetes.repo<> ~/.bashrc 313 | [[ -z $(grep kubeadm ~/.bashrc) ]] && echo "source <(kubeadm completion bash)" >> ~/.bashrc 314 | source ~/.bashrc 315 | k8s_version=$(kubectl version --output=yaml|grep gitVersion|awk 'NR==1{print $2}') 316 | k8s_minor_version=`kubectl version --output=yaml|grep minor|head -n 1|tr -cd '[0-9]'` 317 | echo "k8s version: $(color_echo $green $k8s_version)" 318 | } 319 | 320 | download_images() { 321 | color_echo $yellow "auto download $k8s_version all k8s.gcr.io images..." 322 | pause_version=`cat /etc/containerd/config.toml|grep k8s.gcr.io/pause|grep -Po '\d\.\d'` 323 | k8s_images=(`kubeadm config images list 2>/dev/null|grep 'k8s.gcr.io'|xargs -r` "k8s.gcr.io/pause:$pause_version") 324 | for image in ${k8s_images[@]} 325 | do 326 | if [ $k8s_minor_version -ge 24 ];then 327 | if [[ `ctr -n k8s.io i ls -q|grep -w $image` ]];then 328 | echo " already download image: $(color_echo $green $image)" 329 | continue 330 | fi 331 | else 332 | if [[ `docker images $image|awk 'NR!=1'` ]];then 333 | echo " already download image: $(color_echo $green $image)" 334 | continue 335 | fi 336 | fi 337 | if [[ $can_google == 0 ]];then 338 | core_name=${image#*/} 339 | if [[ $core_name =~ "coredns" ]];then 340 | mirror_name="$mirror_source/coredns:`echo $core_name|egrep -o "[0-9.]+"`" 341 | else 342 | mirror_name="$mirror_source/$core_name" 343 | fi 344 | if [ $k8s_minor_version -ge 24 ];then 345 | ctr -n k8s.io i pull $mirror_name 346 | ctr -n k8s.io i tag $mirror_name $image 347 | ctr -n k8s.io i del $mirror_name 348 | else 349 | docker pull $mirror_name 350 | docker tag $mirror_name $image 351 | docker rmi $mirror_name 352 | fi 353 | else 354 | [ $k8s_minor_version -ge 24 ] && ctr -n k8s.io i pull $image || docker pull $image 355 | fi 356 | 357 | if [ $? -eq 0 ];then 358 | echo "Downloaded image: $(color_echo $blue $image)" 359 | else 360 | echo "Failed download image: $(color_echo $red $image)" 361 | fi 362 | echo "" 363 | done 364 | } 365 | 366 | run_k8s(){ 367 | if [[ $is_master == 1 ]];then 368 | if [[ $network == "flannel" ]];then 369 | run_command "kubeadm init --pod-network-cidr=10.244.0.0/16 --kubernetes-version=`echo $k8s_version|sed "s/v//g"`" 370 | run_command "mkdir -p $HOME/.kube" 371 | run_command "cp -i /etc/kubernetes/admin.conf $HOME/.kube/config" 372 | run_command "chown $(id -u):$(id -g) $HOME/.kube/config" 373 | run_command "kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml" 374 | elif [[ $network == "calico" ]];then 375 | run_command "kubeadm init --pod-network-cidr=192.168.0.0/16 --kubernetes-version=`echo $k8s_version|sed "s/v//g"`" 376 | run_command "mkdir -p $HOME/.kube" 377 | run_command "cp -i /etc/kubernetes/admin.conf $HOME/.kube/config" 378 | run_command "chown $(id -u):$(id -g) $HOME/.kube/config" 379 | run_command "kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml" 380 | fi 381 | else 382 | echo "this node is slave, please manual run 'kubeadm join' command. if forget join command, please run `color_echo $green "kubeadm token create --print-join-command"` in master node" 383 | fi 384 | if [[ `command -v crictl` ]];then 385 | crictl config --set runtime-endpoint=unix:///run/containerd/containerd.sock 386 | [[ -z $(grep crictl ~/.bashrc) ]] && echo "source <(crictl completion bash)" >> ~/.bashrc 387 | fi 388 | color_echo $yellow "kubectl and kubeadm command completion must reopen ssh to affect!" 389 | } 390 | 391 | main() { 392 | check_sys 393 | prepare_work 394 | install_dependent 395 | install_k8s_base 396 | download_images 397 | run_k8s 398 | } 399 | 400 | main --------------------------------------------------------------------------------