(一)kubernetes1.29.4离线部署之-安装文件准备
(二)kubernetes1.29.4离线部署之-镜像文件准备
(三)kubernetes1.29.4离线部署之-环境初始化
(四)kubernetes1.29.4离线部署之-组件安装
(五)kubernetes1.29.4离线部署之-初始化第一个控制平面
(六)kubernetes1.29.4离线部署之-加入Node节点
(七)kubernetes1.29.4离线部署之-网络插件
(八)kubernetes1.29.4离线部署之-测试验证
友情提示: 由于本文过长,不便于阅读,已经拆分为多个章节,可以点击上面的地址单独阅读
本文容器运行时采用的时Containerd
本文网络插件采用的时calico tigera-operator
本文涉及的所有脚本文件可以从如下地址获取:
https://gitee.com/qingplus/qingcloud-platform/tree/develop/qingcloud-deploy/service
前情提要:
本文不介绍K8S架构及细节,仅仅分享Kubernetes部署实施完整过程。
本文主要采用kubeadm方式安装部署。另外本文直接采用单控制平面方式快速完成版本部署,etcd的部署方式为堆叠方式,独立方式的切换后续完成文档说明。
高可用集群拓扑的两个选项介绍:
高可用集群拓扑的两个选项:
- 使用堆叠(stacked)控制平面节点,其中 etcd 节点与控制平面节点共存
- 使用外部 etcd 节点,其中 etcd 在与控制平面不同的节点上运行
本文主要采用第一种堆叠方式:
环境准备
硬件环境
服务器由6台ESXi虚拟化服务器组成,详情参考《ESXi网络配置与物理交换机VLAN ID规划》
本文为单控制平面部署,非高可用集群部署,并未用到规划中的所有节点。后续集群部署会继续使用。
主机名称 | ESXi 节点名 | 角色 | IP地址 | 资源配置 | 安装组件 |
---|---|---|---|---|---|
itserver-master1 | xenserver01 | master | 10.0.0.10 | 8C/16G/200G | |
itserver-master2 | xenserver02 | master | 10.0.0.13 | 8C/16G/200G | |
itserver-node01 | xenserver01 | node | 10.0.0.11 | 16C/64G/500G | |
itserver-node02 | xenserver01 | node | 10.0.0.12 | 16C/64G/500G | |
itserver-node03 | xenserver02 | node | 10.0.0.14 | 16C/64G/500G | |
itserver-node04 | xenserver02 | node | 10.0.0.15 | 16C/64G/500G |
物理服务器节点(安装ESXi)
三台物理服务器 | |||
---|---|---|---|
ESXi 节点名 | ip地址 | 用户名 | 备注 |
xenserver01 | 192.168.3.50 | root | |
xenserver02 | 192.168.3.60 | root | |
xenserver03 | 192.168.3.100 | root |
网络分配
角色 | IP地址 | 备注 |
---|---|---|
node网络 | 10.0.0.0/24 | |
Service 网络 | 10.96.0.0/16 | |
Pod网络 | 172.16.0.0/16 |
网络部署图
离线安装文件准备
需要准备如下几个必须的安装文件,可以离线下载后通过本地nginx代理供其他节点下载使用
- kubernetes_server
直接下载最新版二进制文件
- containerd
本文容器运行时采用containerd而非docker,如果容器运行时采用docker,需要另外的部署版本。本文直接下载三合一版本cri_containerd_cni
- cni_plugins
- crictl
命令行执行工具 。类似docker命令行
- runc
需要单独下载完整版,只是需要检查本地环境是否存在libcommp.so
- etcd
采用外部 etcd 节点部署时需要用到,如果使用的是堆叠的方式,直接用默认的etcd容器即可,可以不用下载。
完整的离线文件下载脚本:
shell
#!/bin/bash
ENV_CFG=./env.cfg
if [ -f ${ENV_CFG} ] ; then
chmod 777 ${ENV_CFG}
source ${ENV_CFG}
fi
# Internet URLs
kernel_url="http://mirrors.tuna.tsinghua.edu.cn/elrepo/kernel/el7/x86_64/RPMS/${kernel_name}"
cni_plugins_url="https://github.com/containernetworking/plugins/releases/download/${cni_plugins_version}/${cni_plugins_name}"
cri_containerd_cni_url="https://github.com/containerd/containerd/releases/download/v${cri_containerd_cni_version}/${cri_containerd_cni_name}"
crictl_url="https://github.com/kubernetes-sigs/cri-tools/releases/download/${crictl_version}/${crictl_name}"
runc_url="https://github.com/opencontainers/runc/releases/download/v${runc_version}/${runc_name}"
etcd_url="https://github.com/etcd-io/etcd/releases/download/${etcd_version}/${etcd_name}"
kubernetes_server_url="https://storage.googleapis.com/kubernetes-release/release/${KUBERNETES_VERSION}/${kubernetes_server_name}"
nginx_url="http://nginx.org/download/${nginx_name}"
# Download packages
packages=(
$kernel_url
$runc_url
$cni_plugins_url
$cri_containerd_cni_url
$crictl_url
$cri_dockerd_url
$etcd_url
$kubernetes_server_url
)
for package_url in "${packages[@]}"; do
filename=$(basename "$package_url")
if curl -k -L -C - -o "$filename" "$package_url"; then
echo "Downloaded $filename"
else
echo "Failed to download $filename"
exit 1
fi
done
离线镜像文件准备
注意:离线安装需要准备大量的镜像,这一步千万要仔细否则会出现各种意想不到的问题
需要准备的镜像文件
- kube-apiserver
- kube-controller-manager
- kube-scheduler
- kube-proxy
- kube-proxy
- coredns
- pause
- etcd
以上镜像文件可以从: registry.cn-hangzhou.aliyuncs.com/google_containers下载
- calico/node
- calico/kube-controllers
- calico/node
- calico/typha
- calico/node-driver-registrar
- calico/csi
- calico/cni
- calico/ctl
- calico/pod2daemon-flexvol
- calico/apiserver
以上可以直接从docker.io下载即可
注意: 以上所有的镜像文件务必准备到位。本文脚本中的几个版本便令注意修改到位:
KUBERNETES_VERSION=${KUBERNETES_VERSION:-"v1.29.4"}
COREDNS_VERSION=${COREDNS_VERSION:-'v1.11.1'}
PAUSE_VERSION=${PAUSE_VERSION:-'3.9'}
ETCD_VERSION=${ETCD_VERSION:-'3.5.12-0'}
REGISTRY_VERSION=${REGISTRY_VERSION:-'2.8.3'}
CALICO_VERSION=${CALICO_VERSION:-'v3.27.3'}
完整的镜像下载脚本
shell
#!/bin/bash
ENV_CFG=./env.cfg
if [ -f ${ENV_CFG} ] ; then
chmod 777 ${ENV_CFG}
source ${ENV_CFG}
fi
image_list="${IMAGE_DOMAIN}/${IMAGE_NAMESPACE}/kube-apiserver:${KUBERNETES_VERSION}
${IMAGE_DOMAIN}/${IMAGE_NAMESPACE}/kube-controller-manager:${KUBERNETES_VERSION}
${IMAGE_DOMAIN}/${IMAGE_NAMESPACE}/kube-scheduler:${KUBERNETES_VERSION}
${IMAGE_DOMAIN}/${IMAGE_NAMESPACE}/kube-proxy:${KUBERNETES_VERSION}
${IMAGE_DOMAIN}/${IMAGE_NAMESPACE}/coredns:${COREDNS_VERSION}
${IMAGE_DOMAIN}/${IMAGE_NAMESPACE}/pause:${PAUSE_VERSION}
${IMAGE_DOMAIN}/${IMAGE_NAMESPACE}/etcd:${ETCD_VERSION}
calico/node:${CALICO_VERSION}
calico/kube-controllers:${CALICO_VERSION}
calico/node:${CALICO_VERSION}
calico/typha:${CALICO_VERSION}
calico/node-driver-registrar:${CALICO_VERSION}
calico/csi:${CALICO_VERSION}
calico/cni:${CALICO_VERSION}
calico/ctl:${CALICO_VERSION}
calico/pod2daemon-flexvol:${CALICO_VERSION}
calico/apiserver:${CALICO_VERSION}
"
#${IMAGE_DOMAIN}/${IMAGE_NAMESPACE}/registry:${REGISTRY_VERSION}
newimage_list=()
for image in ${image_list}; do
docker pull "${image}"
newimage=$(echo $image | sed -e "s/calico/${LOCAL_IMAGE_DOMAIN}\/calico/")
newimage=$(echo $newimage | sed -e "s/${IMAGE_DOMAIN}\/${IMAGE_NAMESPACE}/${LOCAL_IMAGE_DOMAIN}\/${LOCAL_IMAGE_NAMESPACE}/")
newimage_list+="${newimage} "
docker tag $image $newimage
docker push $newimage
done
docker save -o qinghub-kube-"${VERSION}".tar ${newimage_list}
轻云官方下载
https:/qingplus.cn/pkg/kubernetes/v1.29.4/qinghub-kube-v1.29.4.tar
下载完成后再手动导入所有的镜像即可。详细过程不在细说。
环境初始化
检查步骤
- 关闭防火墙
- 关闭 swap partition permanently
- 配置检查时间同步
- 配置安装时间同步组件
- 配置检查 nfs-utils kubeadmin方式安装不需要检查
- 配置检查内核版本
- 配置检查资源情况
- 配置检查SSH
- 配置检查系统配置
- 配置检查转发 IPv4
- 配置检查Docker用户并添加ssh免密认证<authoirzed_keys> (建议手动执行)
- 配置检查Docker (容器运行时为Containerd时,不需要检查)
- 配置检查Docker用户权限 (容器运行时为Containerd时,不需要检查)
- 配置检查网络
完整的初始化脚本
shell
#!/bin/bash
###############################################
# QingHub K8S Install 版本: $VERSION
# 架构: $ARCH_TYPE 目前版本主要支持amd64,其他待敬请期待
# 操作系统: $os_type
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
ENV_CFG=./env.cfg
if [ -f ${ENV_CFG} ] ; then
chmod 777 ${ENV_CFG}
source ${ENV_CFG}
fi
export CONSOLE=${CONSOLE:-false}
os_type=$(cat /etc/os-release | grep "^ID=" | awk -F= '{print $2}' | tr -d [:punct:])
os_version_id=$(cat /etc/os-release | grep "VERSION_ID=" | awk -F= '{print $2}' | tr -d [:punct:])
if [ "$EUID" -ne 0 ]; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${RED}[ERROR] 当前用户不是 root 用户,请切换到 root 用户执行该脚本.${NC}"
exit 1
else
echo -e "${RED}[ERROR] Current user is not root user, please switch to root user to execute the script.${NC}"
exit 1
fi
fi
if [ -z "$SSH_RSA" ]; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${RED}[ERROR] 请设置环境变量 SSH_RSA, 该变量为 SSH 公钥.${NC}"
exit 1
else
echo -e "${RED}[ERROR] Please set the environment variable SSH_RSA, the variable is SSH public key.${NC}"
exit 1
fi
fi
###############################################
# 新增ubuntu 用户
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function add_user_in_ubuntu() {
useradd --create-home -s /bin/bash -g root "$1"
echo "$1":"$2" | chpasswd
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] 用户 $1 已经创建.${NC}"
else
echo -e "${GREEN}[INFO] User $1 has been created.${NC}"
fi
}
###############################################
# 新增redhat 用户
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function add_user_in_redhat() {
adduser -g root "$1"
echo "$1":"$2" | chpasswd
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] 用户 $1 已经创建.${NC}"
else
echo -e "${GREEN}[INFO] User $1 has been created.${NC}"
fi
}
###############################################
# 描述: 检查并新增用户, 有些版本可以不用检查,请使用时根据
# 情况自行注释掉
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function check_user() {
if ! grep -q docker /etc/group; then
groupadd --force docker
fi
if id -u "${DOCKER_USER}" >/dev/null 2>&1; then
if ! id -nG "${DOCKER_USER}" | grep -qw "docker"; then
gpasswd -a "${DOCKER_USER}" docker
fi
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] 用户 ${DOCKER_USER} 已经存在.${NC}"
else
echo -e "${GREEN}[INFO] User ${DOCKER_USER} already exists.${NC}"
fi
else
case $os_type in
centos|redhat|euleros|fusionos|anolis|kylin|rhel|rocky|fedora|openEuler)
add_user_in_redhat "${DOCKER_USER}" "${DOCKER_PASS}"
;;
ubuntu|debian)
add_user_in_ubuntu "${DOCKER_USER}" "${DOCKER_PASS}"
;;
*)
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${RED}[ERROR] 暂不支持 $os_type 操作系统.${NC}"
exit 1
else
echo -e "${RED}[ERROR] The $os_type operating system is temporarily not supported.${NC}"
exit 1
fi
;;
esac
fi
$CONSOLE
$CONSOLE || add_ssh_rsa "${DOCKER_USER}"
}
function add_ssh_rsa() {
if id -u "$user" >/dev/null 2>&1; then
if [ ! -d "/home/$1/.ssh" ]; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] 创建 /home/$1/.ssh 目录.${NC}"
else
echo -e "${GREEN}[INFO] Create /home/$1/.ssh directory.${NC}"
fi
mkdir -p /home/"$1"/.ssh
fi
if [ -f "/home/$1/.ssh/authorized_keys" ]; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] /home/$1/.ssh/authorized_keys 已经存在.${NC}"
else
echo -e "${GREEN}[INFO] /home/$1/.ssh/authorized_keys already exists.${NC}"
fi
chmod 777 /home/"$1"/.ssh/authorized_keys
if ! < /home/"$1"/.ssh/authorized_keys grep -q "$SSH_RSA"; then
echo "$SSH_RSA" >> /home/"$1"/.ssh/authorized_keys
fi
else
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] 创建 /home/$1/.ssh/authorized_keys.${NC}"
else
echo -e "${GREEN}[INFO] Create /home/$1/.ssh/authorized_keys.${NC}"
fi
touch /home/"$1"/.ssh/authorized_keys
chmod 777 /home/"$1"/.ssh/authorized_keys
echo "$SSH_RSA" > /home/"$1"/.ssh/authorized_keys
fi
if < /home/"$1"/.ssh/authorized_keys grep -q "$SSH_RSA"; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] 成功将 SSH 公钥添加到 /home/$1/.ssh/authorized_keys.${NC}"
else
echo -e "${GREEN}[INFO] Successfully added ssh public key to /home/$1/.ssh/authorized_keys.${NC}"
fi
else
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${RED}[ERROR] 将 SSH 公钥添加到 /home/$1/.ssh/authorized_keys 失败.${NC}"
exit 1
else
echo -e "${RED}[ERROR] Add ssh public key to /home/$1/.ssh/authorized_keys failed.${NC}"
exit 1
fi
fi
chmod 600 /home/"$1"/.ssh/authorized_keys
chown -R "$1":"$1" /home/"$1"/.ssh
fi
}
function check_user_permission(){
if su ${DOCKER_USER} -c "docker ps" >/dev/null 2>&1; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] Docker 用户有权限执行 docker 命令.${NC}"
else
echo -e "${GREEN}[INFO] Docker users have the permission to execute docker commands.${NC}"
fi
else
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${RED}[ERROR] Docker 用户无权限执行 docker 命令, 请尝试重启docker 'systemctl restart docker'. 重启 docker 后, 再次执行该脚本.${NC}"
exit 1
else
echo -e "${RED}[ERROR] Docker users have no permission to execute docker commands, Please try to restart docker 'systemctl restart docker'. After restarting docker, execute the script again.${NC}"
exit 1
fi
fi
}
###############################################
# 描述: 关闭防火墙
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function disable_firewalld() {
if systemctl status firewalld | grep Active | grep -q running >/dev/null 2>&1; then
systemctl stop firewalld >/dev/null 2>&1
systemctl disable firewalld >/dev/null 2>&1
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] 检测到 Firewalld 服务已启动,正在将 Firewalld 服务关闭并禁用.${NC}"
else
echo -e "${GREEN}[INFO] The Firewalld service has been started, Firewalld service is being turned off and disabled.${NC}"
fi
else
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] Firewalld 服务已经停止或未安装.${NC}"
else
echo -e "${GREEN}[INFO] Firewalld service is not installed.${NC}"
fi
fi
}
###############################################
# 描述: 关闭swap
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function disable_swap() {
if swapoff -a; then
sed -i '/swap/s/^/#/' /etc/fstab
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] swap 已经禁用.${NC}"
else
echo -e "${GREEN}[INFO] swap has been disabled.${NC}"
fi
fi
}
function check_time_sync() {
if timedatectl status | grep "NTP synchronized" | grep -q "yes" >/dev/null 2>&1 || timedatectl show | grep "NTPSynchronized=yes" >/dev/null 2>&1; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] NTP 时间同步已经启用.${NC}"
else
echo -e "${GREEN}[INFO] NTP time synchronization has been enabled.${NC}"
fi
else
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${YELLOW}[WARN] NTP 时间同步未启用.${NC}"
else
echo -e "${YELLOW}[WARN] NTP time synchronization is not enabled.${NC}"
fi
fi
}
###############################################
# 描述: 安装时钟同步,请酌情修改并安装
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
install_chrony(){
case $os_type in
ubuntu|debian)
if dpkg -l | grep -q chrony >/dev/null 2>&1; then
echo -e "${GREEN}[INFO] chrony 已经安装在主机上.${NC}"
else
echo -e "${YELLOW}[WARN] chrony 未安装在主机上, 请执行命令安装 'apt -y install chrony'.${NC}"
apt -y install chrony &> /dev/null;
systemctl restart chronyd && systemctl enable --now chronyd &> /dev/null
systemctl is-active chronyd &> /dev/null
fi
;;
*)
if rpm -qa | grep -q chrony >/dev/null 2>&1; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] chrony 已经安装在主机上.${NC}"
else
echo -e "${GREEN}[INFO] chrony has been installed on the host.${NC}"
fi
else
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${YELLOW}[WARN] chrony 未安装在主机上, 请执行命令安装 'yum -y install chrony'.${NC}"
else
echo -e "${YELLOW}[WARN] chrony is not installed on the host, please execute the command install 'yum -y install chrony'.${NC}"
fi
yum -y install chrony
fi
;;
esac
if [ "${CHRONY_TYPE}" == 'server' ]; then
sudo bash -c 'cat > /etc/chrony.conf << EOF
pool ntp.aliyun.com iburst
driftfile /var/lib/chrony/drift
makestep 1.0 3
rtcsync
allow 10.0.0.0/24
local stratum 10
keyfile /etc/chrony.keys
leapsectz right/UTC
logdir /var/log/chrony
EOF'
else
sudo bash -c 'cat > /etc/chrony.conf << EOF
pool ${CHRONY_SERVER} iburst
driftfile /var/lib/chrony/drift
makestep 1.0 3
rtcsync
keyfile /etc/chrony.keys
leapsectz right/UTC
logdir /var/log/chrony
EOF'
fi
systemctl restart chronyd && systemctl enable --now chronyd &> /dev/null
systemctl is-active chronyd &> /dev/null
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] chrony 完成配置在主机上.${NC}"
else
echo -e "${GREEN}[INFO] chrony has been configured on the host.${NC}"
fi
}
###############################################
# 描述: 优化配置forwarding_ipv4
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function check_forwarding_ipv4() {
sudo bash -c 'cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
overlay
br_netfilter
EOF'
sudo modprobe overlay
sudo modprobe br_netfilter
sudo bash -c 'cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1
EOF'
sudo sysctl --system
#加载ipvs模块
sudo bash -c 'cat <<EOF | sudo tee /etc/modules-load.d/ipvs.conf <<EOF
ip_vs
ip_vs_rr
ip_vs_wrr
ip_vs_sh
nf_conntrack
ip_tables
ip_set
xt_set
ipt_set
ipt_rpfilter
ipt_REJECT
ipip
EOF'
systemctl restart systemd-modules-load.service
}
###############################################
# 描述: 检查服务器资源状况
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function check_resource(){
cpu=$(grep -c 'processor' /proc/cpuinfo)
mem=$(free -g | awk '/^Mem/{print $2}')
DISK_SPACE=$(df /|sed -n '2p'|awk '{print $2}')
# check cpu
if [ "${cpu}" -lt 2 ]; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${YELLOW}[WARN] CPU核数建议至少为2核.${NC}"
else
echo -e "${YELLOW}[WARN] The cpu is recommended to be at least 2C.${NC}"
fi
fi
# check memory
if [ "${mem}" -lt 3 ]; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${YELLOW}[WARN] 内存建议至少为8G.${NC}"
else
echo -e "${YELLOW}[WARN] The Memory is recommended to be at least 8G.${NC}"
fi
fi
# check disk space
if [ "${DISK_SPACE}" -lt 47185920 ];then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${YELLOW}[WARN] 根分区空间需大于 50G.${NC}"
else
echo -e "${YELLOW}[WARN] The root partition space must be greater than 50G.${NC}"
fi
fi
}
###############################################
# 描述: 检查内核版本
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function check_kernel() {
kernel_version=$(uname -r | awk -F. '{print $1}')
if [ "$kernel_version" -lt "4" ]; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${YELLOW}[WARN] 内核版本必须高于4.0, 请尽快升级内核到4.0+.${NC}"
else
echo -e "${YELLOW}[WARN] Kernel version must be higher than 4.0, Please upgrade the kernel to 4.0+ as soon as possible.${NC}"
fi
fi
}
###############################################
# 描述: 检查 nfs是否安装,这里并未自动安装
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function check_nfscli(){
case $os_type in
ubuntu|debian)
if dpkg -l | grep -q nfs-common >/dev/null 2>&1; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] nfs-common 已经安装在主机上.${NC}"
else
echo -e "${GREEN}[INFO] nfs-common has been installed on the host.${NC}"
fi
else
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${YELLOW}[WARN] nfs-common 未安装在主机上, 请执行命令安装 'apt -y install nfs-common'.${NC}"
else
echo -e "${YELLOW}[WARN] nfs-common is not installed on the host, please execute the command install 'apt-get update && apt -y install nfs-common'.${NC}"
fi
fi
;;
*)
if rpm -qa | grep -q nfs-utils >/dev/null 2>&1; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] nfs-utils 已经安装在主机上.${NC}"
else
echo -e "${GREEN}[INFO] nfs-utils has been installed on the host.${NC}"
fi
else
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${YELLOW}[WARN] nfs-utils 未安装在主机上, 请执行命令安装 'yum -y install nfs-utils'.${NC}"
else
echo -e "${YELLOW}[WARN] nfs-utils is not installed on the host, please execute the command install 'yum -y install nfs-utils'.${NC}"
fi
fi
;;
esac
}
function check_openssh(){
if ssh -V >/dev/null 2>&1; then
OPENSSH_VERSION=$(ssh -V |& awk -F[_.] '{print $2}')
if [ "${OPENSSH_VERSION}" -lt "7" ];then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${YELLOW}[WARN] Openssh 版本必须高于 7.0.${NC}"
else
echo -e "${YELLOW}[WARN] Openssh version must be higher than 7.0 ${NC}"
fi
fi
else
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${RED}[ERROR] 需要安装 7.0+ 版本的openssh.${NC}"
exit 1
else
echo -e "${RED}[ERROR] Need to install 7.0+ version of openssh.${NC}"
exit 1
fi
fi
if grep -v "^\s*#" /etc/ssh/sshd_config | grep "AllowTcpForwarding yes" >/dev/null 2>&1; then
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${GREEN}[INFO] /etc/ssh/sshd_config 已经配置 AllowTcpForwarding yes.${NC}"
else
echo -e "${GREEN}[INFO] /etc/ssh/sshd_config has been configured AllowTcpForwarding yes.${NC}"
fi
else
if grep "AllowTcpForwarding no" /etc/ssh/sshd_config >/dev/null 2>&1; then
sed -i '/AllowTcpForwarding/s/^/#/' /etc/ssh/sshd_config
sed -i '$a\AllowTcpForwarding yes' /etc/ssh/sshd_config
else
sed -i '$a\AllowTcpForwarding yes' /etc/ssh/sshd_config
fi
if [ "$LANG" == "zh_CN.UTF-8" ]; then
echo -e "${YELLOW}[WARN] /etc/ssh/sshd_config 配置 AllowTcpForwarding yes 成功, 请执行命令重启 sshd 服务生效, 'systemctl restart sshd'.${NC}"
else
echo -e "${YELLOW}[WARN] /etc/ssh/sshd_config AllowTcpForwarding yes is successfully configured, Run the following command to restart the sshd service to take effect, 'systemctl restart sshd'.${NC}"
fi
fi
}
###############################################
# 描述: 优化参数
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function optimize_linux() {
sudo bash -c 'cat > /etc/sysctl.conf << EOF
net.bridge.bridge-nf-call-ip6tables=1
net.bridge.bridge-nf-call-iptables=1
net.ipv4.ip_forward=1
net.ipv4.conf.all.forwarding=1
net.ipv4.neigh.default.gc_thresh1=4096
net.ipv4.neigh.default.gc_thresh2=6144
net.ipv4.neigh.default.gc_thresh3=8192
net.ipv4.neigh.default.gc_interval=60
net.ipv4.neigh.default.gc_stale_time=120
kernel.perf_event_paranoid=-1
#sysctls for k8s node config
net.ipv4.tcp_slow_start_after_idle=0
net.core.rmem_max=16777216
fs.inotify.max_user_watches=524288
kernel.softlockup_all_cpu_backtrace=1
kernel.softlockup_panic=0
kernel.watchdog_thresh=30
fs.file-max=2097152
fs.inotify.max_user_instances=8192
fs.inotify.max_queued_events=16384
vm.max_map_count=262144
fs.may_detach_mounts=1
net.core.netdev_max_backlog=16384
net.ipv4.tcp_wmem=4096 12582912 16777216
net.core.wmem_max=16777216
net.core.somaxconn=32768
net.ipv4.ip_forward=1
net.ipv4.tcp_max_syn_backlog=8096
net.ipv4.tcp_rmem=4096 12582912 16777216
net.ipv6.conf.all.disable_ipv6=1
net.ipv6.conf.default.disable_ipv6=1
net.ipv6.conf.lo.disable_ipv6=1
kernel.yama.ptrace_scope=0
vm.swappiness=0
kernel.core_uses_pid=1
# Do not accept source routing
net.ipv4.conf.default.accept_source_route=0
net.ipv4.conf.all.accept_source_route=0
# Promote secondary addresses when the primary address is removed
net.ipv4.conf.default.promote_secondaries=1
net.ipv4.conf.all.promote_secondaries=1
# Enable hard and soft link protection
fs.protected_hardlinks=1
fs.protected_symlinks=1
net.ipv4.conf.all.rp_filter=0
net.ipv4.conf.default.rp_filter=0
net.ipv4.conf.default.arp_announce = 2
net.ipv4.conf.lo.arp_announce=2
net.ipv4.conf.all.arp_announce=2
net.ipv4.tcp_max_tw_buckets=5000
net.ipv4.tcp_syncookies=1
net.ipv4.tcp_fin_timeout=30
net.ipv4.tcp_synack_retries=2
kernel.sysrq=1
EOF'
sudo sysctl -p >/dev/null 2>&1
echo -e "${GREEN}[INFO] 优化kernel参数成功${NC}"
}
function optimize_limits() {
sudo bash -c 'cat >> /etc/security/limits.conf <<EOF
* soft nofile 1024000
* hard nofile 1024000
EOF'
echo -e "${GREEN}[INFO] 优化limits参数成功${NC}"
}
function check_syscfg(){
sudo chmod 777 /etc/sysctl.conf
sudo chmod 777 /sbin/sysctl
sudo chmod 777 /etc/security/limits.conf
optimize_linux
optimize_limits
sudo chmod 644 /etc/sysctl.conf
sudo chmod 755 /sbin/sysctl
sudo chmod 644 /etc/security/limits.conf
}
###############################################
# 描述: calico 网络配置初始化
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function check_network() {
sudo bash -c 'cat >> /etc/NetworkManager/conf.d/calico.conf << EOF
[keyfile]
unmanaged-devices=interface-name:cali*;interface-name:tunl*
unmanaged-devices=interface-name:cali*;interface-name:tunl*;interface-name:vxlan.calico;interface-name:wireguard.cali
EOF'
systemctl restart NetworkManager
}
###############################################
# 描述: 主入口函数
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function main {
echo -e "${GREEN}[INFO] ==========开始检查并配置初始化========= ${NC}"
# 停止 friewalld
disable_firewalld
# 关闭 swap partition permanently
disable_swap
# 配置检查时间同步
check_time_sync
# 配置安装时间同步组件
install_chrony
# 配置检查 nfs-utils kubeadmin方式安装不需要检查
#check_nfscli
# 配置检查内核版本
check_kernel
# 配置检查资源情况
check_resource
# 配置检查SSH
check_openssh
# 配置检查系统配置
check_syscfg
# 转发 IPv4
check_forwarding_ipv4
# 配置检查Docker用户并添加ssh免密认证<authoirzed_keys>
check_user
# 配置检查Docker 容器运行时为Containerd时,不需要检查
#check_docker
# 配置检查Docker用户权限 容器运行时为Containerd时,不需要检查
#check_user_permission
# 配置检查网络
check_network
echo -e "${GREEN}[INFO] ==========成功完成检查并配置初始化========= ${NC}"
}
main
组件安装
需要安装的组件列表
- 安装containerd
- 部署containerd 配置文件
- 安装cni plugin
- 安装crictl
- 安装runc
- 安装部署kubeadm、kubelet、kubectl
特别关注:
再拷贝kubeadm、kubelet、kubectl文件后,务必记得要创建必须要的几个目录,否则会导致后面初始化控制平面时会出错,详情见完整的安装脚本
sudo mkdir -p /var/lib/kubelet
sudo mkdir -p /etc/kubernetes/manifests
yum 自动从网络安装不会出现该问题,会自动创建。
- 初始化集群第一控制平面节点
安装完整的脚本
shell
#!/bin/bash
###############################################
# QingHub K8S Install 版本: $VERSION
# 架构: $ARCH_TYPE 目前版本主要支持amd64,其他待敬请期待
# 操作系统: $os_type
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
ENV_CFG=./env.cfg
if [ -f ${ENV_CFG} ] ; then
chmod 777 ${ENV_CFG}
source ${ENV_CFG}
fi
os_type=$(uname -s)
if [ $(arch) = "x86_64" ] || [ $(arch) = "amd64" ]; then
arch_type=amd64
elif [ $(arch) = "aarch64" ] || [ $(arch) = "arm64" ]; then
arch_type=arm64
elif [ $(arch) = "i386" ]; then
arch_type=amd64
echo -e "${YELLOW}[WAIN] 检测到 i386, 我们暂时把它当做 x86_64(amd64) ${NC}"
else
echo -e "${RED}[ERROR] QingHub Studio 目前还不支持 $(arch) 架构 ${NC}"
exit 1
fi
###############################################
# 复制并安装cri_containerd_cni 包括:cri, containerd,cni三合一,后续会覆盖安装
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function install_cri_containerd_cni(){
echo -e "${GREEN}[INFO] 下载并安装cri_containerd_cni二级制文件 ${cri_containerd_cni_name} ${NC}"
if [[ -e /usr/bin/curl ]]; then
# 离线下载文件请修改TODO
curl -L ${cri_containerd_cni_url} | sudo tar -C / -xz || {
echo -e "${RED}[ERROR] 下载并安装cri_containerd_cni二进制文件失败 ${NC}"
exit 1
}
else
wget -c "$cri_containerd_cni_url" | sudo tar -C / -xz || {
echo -e "${RED}[ERROR] 下载cri_containerd_cni二进制文件失败 ${NC}"
exit 1
}
fi
echo -e "${GREEN}[INFO] 创建containerd.service 文件 ${NC}"
sudo systemctl enable --now containerd
echo -e "${GREEN}[INFO] 安装containerd成功${NC}"
}
###############################################
# 描述: 初始化containerd 配置文件,添加修改仓库信息,请酌情修改
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function install_containerd_config(){
mkdir -p /etc/containerd
sudo /usr/local/bin/containerd config default | tee /etc/containerd/config.toml
# 修改Containerd的配置文件
sudo sed -i "s#SystemdCgroup\ \=\ false#SystemdCgroup\ \=\ true#g" /etc/containerd/config.toml
cat /etc/containerd/config.toml | grep SystemdCgroup
sudo sed -i "s#registry.k8s.io\/pause:3.8#qinghub.net:5000\/qingcloudtech\/pause:3.9#g" /etc/containerd/config.toml
cat /etc/containerd/config.toml | grep sandbox_image
sudo sed -i "s#config_path\ \=\ \"\"#config_path\ \=\ \"/etc/containerd/certs.d\"#g" /etc/containerd/config.toml
cat /etc/containerd/config.toml | grep certs.d
mkdir /etc/containerd/certs.d/qinghub.net:5000 -pv
sudo bash -c 'cat > /etc/containerd/certs.d/qinghub.net:5000/hosts.toml << EOF
server = "qinghub.net:5000"
[host."qinghub.net:5000"]
capabilities = ["pull", "resolve"]
EOF'
mkdir /etc/containerd/certs.d/docker.io -pv
sudo bash -c 'cat > /etc/containerd/certs.d/docker.io/hosts.toml << EOF
server = "https://docker.io"
[host."https://qinghub.net:5000"]
capabilities = ["pull", "resolve"]
[host."https://dockerproxy.com"]
capabilities = ["pull", "resolve"]
[host."https://docker.m.daocloud.io"]
capabilities = ["pull", "resolve"]
[host."https://reg-mirror.qiniu.com"]
capabilities = ["pull", "resolve"]
[host."http://hub-mirror.c.163.com"]
capabilities = ["pull", "resolve"]
EOF'
systemctl daemon-reload
systemctl restart containerd.service
}
###############################################
# 描述: 安装cni文件
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function install_cni_plugins(){
DEST="/opt/cni/bin"
sudo mkdir -p "$DEST"
echo -e "${GREEN}[INFO] 下载并安装cni_plugins二级制文件 ${cni_plugins_name} ${NC}"
if [[ -e /usr/bin/curl ]]; then
# 离线下载文件请修改TODO
curl -L ${cni_plugins_url} | sudo tar -C "$DEST" -xz || {
echo -e "${RED}[ERROR] 下载cni_plugins二进制文件失败 ${NC}"
exit 1
}
else
wget -c "$cni_plugins_url" | sudo tar -C "$DEST" -xz || {
echo -e "${RED}[ERROR] 下载cni_plugins二进制文件失败 ${NC}"
exit 1
}
fi
echo -e "${GREEN}[INFO] 安装cni_plugins成功${NC}"
}
###############################################
# 描述: 拷贝runc文件
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function install_runc(){
DEST="/usr/bin"
sudo mkdir -p "$DEST"
cd "$DEST"
echo -e "${GREEN}[INFO] 下载并安装runc二级制文件 ${runc_name} ${NC}"
if [[ -e /usr/bin/curl ]]; then
# 离线下载文件请修改TODO
curl -L -O ${runc_url} || {
echo -e "${RED}[ERROR] 下载并安装runc二进制文件失败 ${NC}"
exit 1
}
else
wget -c "$runc_url" || {
echo -e "${RED}[ERROR] 下载runc二进制文件失败 ${NC}"
exit 1
}
fi
if [ -f $DEST/runc.amd64 ]; then
chmod +x $DEST/runc.amd64
mv $DEST/runc.amd64 $DEST/runc
fi
echo -e "${GREEN}[INFO] 安装runc成功${NC}"
}
###############################################
# 描述: 拷贝crictl工具文件
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function install_crictl(){
DEST="/usr/local/bin"
sudo mkdir -p "$DEST"
echo -e "${GREEN}[INFO] 下载并安装crictl二级制文件 ${crictl_name} ${NC}"
if [[ -e /usr/bin/curl ]]; then
# 离线下载文件请修改TODO
sudo curl -L ${crictl_url} | sudo tar -C $DEST -xz || {
echo -e "${RED}[ERROR] 下载crictl二进制文件失败 ${NC}"
exit 1
}
else
sudo wget -c "$crictl_url" | sudo tar -C "$DEST" -xz || {
echo -e "${RED}[ERROR] 下载crictl二进制文件失败 ${NC}"
exit 1
}
fi
echo -e "${GREEN}[INFO] 安装crictl成功${NC}"
#生成配置文件
sudo bash -c "cat > /etc/crictl.yaml <<EOF
runtime-endpoint: unix:///run/containerd/containerd.sock
image-endpoint: unix:///run/containerd/containerd.sock
timeout: 10
EOF"
systemctl restart containerd
}
###############################################
# 描述: 安装kubeadmin,kubelet,kubectl,在每个节点都需要安装kubeadmin,kubelet,
# kubectl根据情况在合适的控制平台节点安装,可以修改参数$QINGCLOUD_KUBECTL_FLAG=no关闭安装
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function install_kubeadm(){
TEMP="/tmp"
echo -e "${GREEN}[INFO] 下载Kubernetes二级制文件 ${KUBERNETES_VERSION} ${NC}"
if [[ -e /usr/bin/curl ]]; then
# 离线下载文件请修改TODO
sudo curl -L "${kubernetes_server_url}" | sudo tar -C "$TEMP" -xz || {
echo -e "${RED}[ERROR] 下载Kubernetes二进制文件失败 ${NC}"
exit 1
}
else
sudo wget -c "$kubernetes_server_url" | sudo tar -C "$TEMP" -xz || {
echo -e "${RED}[ERROR] 下载Kubernetes二进制文件失败 ${NC}"
exit 1
}
fi
DEST="/usr/bin"
cd $DEST
sudo cp $TEMP/kubernetes/server/bin/{kubeadm,kubelet} .
sudo chmod +x {kubeadm,kubelet}
echo -e "${GREEN}[INFO] 成功安装kubeadm,kubelet到${DEST}目录 ${NC}"
echo -e "${GREEN}[INFO] 创建kubelet.service 文件 ${NC}"
sudo bash -c "cat > /usr/lib/systemd/system/kubelet.service <<EOF
[Unit]
Description=kubelet: The Kubernetes Node Agent
Documentation=https://kubernetes.io/docs/
Wants=network-online.target
After=network-online.target
[Service]
ExecStart=${DEST}/kubelet
Restart=always
StartLimitInterval=0
RestartSec=10
[Install]
WantedBy=multi-user.target
EOF"
sudo mkdir -p /usr/lib/systemd/system/kubelet.service.d
echo -e "${GREEN}[INFO] 创建10-kubeadm.conf 文件 ${NC}"
sudo bash -c "cat > /usr/lib/systemd/system/kubelet.service.d/10-kubeadm.conf <<EOF
[Service]
Environment=\"KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf\"
Environment=\"KUBELET_CONFIG_ARGS=--config=/var/lib/kubelet/config.yaml\"
EnvironmentFile=-/var/lib/kubelet/kubeadm-flags.env
EnvironmentFile=-/etc/sysconfig/kubelet
ExecStart=
ExecStart=$DEST/kubelet \\\$KUBELET_KUBECONFIG_ARGS \\\$KUBELET_CONFIG_ARGS \\\$KUBELET_KUBEADM_ARGS \\\$KUBELET_EXTRA_ARGS
EOF"
sudo bash -c "cat > /etc/sysconfig/kubelet <<EOF
KUBELET_EXTRA_ARGS=
EOF"
#创建必须要的几个目录
sudo mkdir -p /var/lib/kubelet
sudo mkdir -p /etc/kubernetes/manifests
sudo systemctl enable kubelet
if [ "$QINGCLOUD_KUBECTL_FLAG" == "yes" ]; then
cd $DEST
sudo cp ${TEMP}/kubernetes/server/bin/kubectl .
sudo chmod +x kubectl
echo -e "${GREEN}[INFO] 成功安装kubectl到${DEST}目录 ${NC}"
fi
if [[ -d "${TEMP}/kubernetes" ]]; then
sudo rm -rf "${TEMP}/kubernetes-server-linux-amd64"
echo -e "${GREEN}[INFO] 临时安装文件${TEMP}/kubernetes-server-linux-amd64正常删除 ${NC}"
fi
}
###############################################
# 描述: 初始化控制平面节点。
# ${QINGCLOUD_ADVERTISE_ADDRESS} ApiServer地址,请根据情况填写,可以是配置的高可用地址
# ${LOCAL_IMAGE_DOMAIN} 本地容器镜像仓库地址
# ${LOCAL_IMAGE_NAMESPACE} 本地容器镜像命名空间
# ${KUBERNETES_VERSION} K8S版本
# QingHub Studio官网: https://qinghub.net
# 如过您安装遇到问题,请到官网查找官方联系方式或加支持群:
# https://qinghub.net
###############################################
function init_cluster(){
echo -e "${GREEN}[INFO] ==========初始化第一个控制平面,请根据输出结果初始其他他节点========= ${NC}"
kubeadm init \
--apiserver-advertise-address="${QINGCLOUD_ADVERTISE_ADDRESS}" \
--image-repository "${LOCAL_IMAGE_DOMAIN}/${LOCAL_IMAGE_NAMESPACE}" \
--kubernetes-version "${KUBERNETES_VERSION}" \
--cri-socket=unix:///run/containerd/containerd.sock \
--service-cidr=10.96.0.0/16 \
--pod-network-cidr=172.16.0.0/16
}
# 主入口地址,根据实际可以手动执行相关内容
function main {
echo -e "${GREEN}[INFO] ==========开始安装kubernetes========= ${NC}"
#安装containerd
install_cri_containerd_cni
#安装cni plugin
install_cni_plugins
#安装containerd 配置文件
install_containerd_config
#安装crictl
install_crictl
#安装runc
install_runc
#安装kubeadm
install_kubeadm
#初始化集群master节点
if [ "$QINGCLOUD_KUBECTL_FLAG" == "yes" ] ;then
init_cluster
fi
echo -e "${GREEN}[INFO] ==========完成安装kubernetes========= ${NC}"
}
main
执行命令初始化第一个控制平面节点
在上节的安装过程中,实际以及包含了初始化第一个控制平面的脚本,由于其重要性,这里单独提出来详细说明。
通过执行kubeadm init 指令快速初始化控制平面,可以通过直接待参数的方式或通过--config加配置文件的方式实现:
配置参数形式
shell
kubeadm init \
--apiserver-advertise-address="${QINGCLOUD_ADVERTISE_ADDRESS}" \
--image-repository "${LOCAL_IMAGE_DOMAIN}/${LOCAL_IMAGE_NAMESPACE}" \
--kubernetes-version "${KUBERNETES_VERSION}" \
--cri-socket=unix:///run/containerd/containerd.sock \
--service-cidr=10.96.0.0/16 \
--pod-network-cidr=172.16.0.0/16
配置文件形式
第一步:如下命令生成默认配置文件并作修改
shell
kubeadm config print init-defaults > initConfig.yaml
第二步:执行命令
shell
kubeadm init --config=initConfig.yaml
准备kubectl配置文件
根据上面的指令生成的结果,拷贝如下命令后直接执行,使得kubectl后面可以直接运行
shell
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
加入Node节点
根据执行命令生成第一个控制平面的结果,拷贝如下类似的文件到node节点。直接执行:
shell
kubeadm join x.x.x.x:6443 --token picxyk.su53y03l1z0jh333e \
--discovery-token-ca-cert-hash sha256:01fecbd4bdc0513811f7b65a43e41820d703a91c631e262b1ad4634e12cd0205
--cri-socket=unix:///run/containerd/containerd.sock
执行kubectl get nodes 查看node节点执行结果
shell
[root@itserver-master2 kube]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
itserver-master2 Ready control-plane 2h v1.29.4
itserver-node4 Ready <none> 1m v1.29.4
[root@itserver-master2 kube]#
部署网络插件
我们采用calico作为网络插件,calico最新版建议的部署方式为两个步骤,执行两个文件即可:
tigera-operator.yaml、custom-resources.yaml
下载tigera-operator.yaml
https://github.com/projectcalico/calico/blob/v3.27.3/manifests/tigera-operator.yaml
https://github.com/projectcalico/calico/blob/v3.27.3/manifests/custom-resources.yaml
修改tigera-operator.yaml文件内容(离线版)
注意:修改镜像地址,请根据自己保存镜像的实际地址修改
shell
[root@web02 v1.29.4]# cat tigera-operator.yaml | grep image:
image:
image: quay.io/tigera/operator:v1.32.7
[root@web02 v1.29.4]#
[root@web02 v1.29.4]# sudo sed -i "s#quay.io\/tigera#qinghub.net:5000\/qingcloudtech#g" tigera-operator.yaml
[root@web02 v1.29.4]# cat tigera-operator.yaml | grep image:
image:
image: qinghub.net:5000/qingcloudtech/operator:v1.32.7
[root@web02 v1.29.4]# ll
执行kubectl create -f tigera-operator.yaml
shell
[root@itserver-master2 kube]# kubectl create -f tigera-operator.yaml
namespace/tigera-operator created
customresourcedefinition.apiextensions.k8s.io/bgpconfigurations.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/bgpfilters.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/bgppeers.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/blockaffinities.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/caliconodestatuses.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/clusterinformations.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/felixconfigurations.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/globalnetworkpolicies.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/globalnetworksets.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/hostendpoints.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/ipamblocks.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/ipamconfigs.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/ipamhandles.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/ippools.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/ipreservations.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/kubecontrollersconfigurations.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/networkpolicies.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/networksets.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/apiservers.operator.tigera.io created
customresourcedefinition.apiextensions.k8s.io/imagesets.operator.tigera.io created
customresourcedefinition.apiextensions.k8s.io/installations.operator.tigera.io created
customresourcedefinition.apiextensions.k8s.io/tigerastatuses.operator.tigera.io created
serviceaccount/tigera-operator created
clusterrole.rbac.authorization.k8s.io/tigera-operator created
clusterrolebinding.rbac.authorization.k8s.io/tigera-operator created
deployment.apps/tigera-operator created
[root@itserver-master2 kube]#
查看结果
shell
[root@itserver-master2 kube]# kubectl get pods -n tigera-operator
NAME READY STATUS RESTARTS AGE
tigera-operator-6779dc6889-zd4zt 1/1 Running 0 55s
[root@itserver-master2 kube]#
修改custom-resources.yaml
注意: 主要修改内容:cidr: 172.16.0.0/16,需要与控制平面初始化时的地址填写的地址一直
shell
spec:
# Configures Calico networking.
calicoNetwork:
# Note: The ipPools section cannot be modified post-install.
ipPools:
- blockSize: 26
cidr: 172.16.0.0/12
encapsulation: VXLANCrossSubnet
natOutgoing: Enabled
nodeSelector: all()
执行kubectl create -f custom-resources.yaml
shell
[root@itserver-master2 kube]# kubectl create -f custom-resources.yaml
installation.operator.tigera.io/default created
apiserver.operator.tigera.io/default created
[root@itserver-master2 kube]# kubectl get ns
NAME STATUS AGE
calico-system Active 48s
default Active 3h5m
kube-node-lease Active 3h5m
kube-public Active 3h5m
kube-system Active 3h5m
tigera-operator Active 6m35s
[root@itserver-master2 kube]# kubectl get pods -n calico-system
NAME READY STATUS RESTARTS AGE
calico-kube-controllers-68bf945ffc-mf7t2 0/1 ContainerCreating 0 75s
calico-node-27fgm 0/1 Init:ImagePullBackOff 0 75s
calico-typha-5886b45b65-pmsm7 0/1 ErrImagePull 0 75s
csi-node-driver-9b29j 0/2 ContainerCreating 0 75s
[root@itserver-master2 kube]#
calico网络安装后,检查所有空间众的pod:
shell
[root@itserver-master2 certs.d]# kubectl get pods --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE
calico-apiserver calico-apiserver-864697c659-2sdhd 1/1 Running 0 4m18s
calico-apiserver calico-apiserver-864697c659-c2vp9 1/1 Running 0 4m18s
calico-system calico-kube-controllers-68bf945ffc-dvrlf 1/1 Running 0 63m
calico-system calico-node-27fgm 1/1 Running 0 18h
calico-system calico-node-zwpls 1/1 Running 0 17h
calico-system calico-typha-5886b45b65-pmsm7 1/1 Running 0 18h
calico-system csi-node-driver-9b29j 2/2 Running 0 18h
calico-system csi-node-driver-mrtq5 2/2 Running 0 17h
kube-system coredns-67bd986d4c-67fvl 1/1 Running 0 16m
kube-system coredns-67bd986d4c-x7vk7 1/1 Running 0 56m
kube-system etcd-itserver-master2 1/1 Running 1 21h
kube-system kube-apiserver-itserver-master2 1/1 Running 1 21h
kube-system kube-controller-manager-itserver-master2 1/1 Running 1 21h
kube-system kube-proxy-9rv85 1/1 Running 0 21h
kube-system kube-proxy-l9rht 1/1 Running 1 17h
kube-system kube-scheduler-itserver-master2 1/1 Running 1 21h
tigera-operator tigera-operator-6779dc6889-zd4zt 1/1 Running 0 18h
[root@itserver-master2 certs.d]#
看到如上几个空间中的状态都变为runging时,网络部署成功
测试验证
部署nginx
第一步、部署文件准备nginx.yaml
shell
apiVersion: v1
kind: Service
metadata:
name: nginx
labels:
app: nginx
spec:
ports:
- port: 80
name: web
selector:
app: nginx
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
spec:
replicas: 1
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: qingcloudtech/nginx:1.25.4
ports:
- containerPort: 80
name: web
第二部、执行命令
shell
kubectl apply -f nginx.yaml
第三步、检查service及deployment
shell
[root@itserver-master2 kube]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 22h
nginx ClusterIP 10.101.221.253 <none> 80/TCP 17s
[root@itserver-master2 kube]# kubectl get deploy -o wide
NAME READY UP-TO-DATE AVAILABLE AGE CONTAINERS IMAGES SELECTOR
nginx-deployment 1/1 1 1 35s nginx qingcloudtech/nginx:1.25.4 app=nginx
[root@itserver-master2 kube]#
[root@itserver-master2 kube]# curl http://172.24.128.130
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
[root@itserver-master2 kube]#
至此,完成整个部署过程
你可以通过【QingHub Studio】) 套件直接安装部署,也可以手动按如下文档操作,该项目已经全面开源,完整的脚本可以从如下开源地址获取:
开源地址: https://gitee.com/qingplus/qingcloud-platform
【QingHub Studio集成开发套件】