Kubeadm 1.18.17部署方案
1.提前准备镜像（有网机器下载）,提前导入
for k in `ls -l | awk '{print $9}'`
do
sudo docker load -i $k
done
2.提前准备calico kube-config 文件
#安装docker
有网安装
sudo yum install -y yum-utils
device-mapper-persistent-data
lvm2
sudo yum-config-manager
--add-repo
http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
sudo yum install docker-ce-20.10.08 docker-ce-cli-20.10.08 containerd.io
无网安装
sudo yum -y localinstall .#&/' /etc/fstab # 永久
根据规划设置主机名
hostnamectl set-hostname在master添加hosts#分别设置为master1、master2、master3、node1、node2、node3
cat >> /etc/hosts << EOF 192.168.xxx.xxx master.k8s.io k8s-vip 192.168.xxx.xxx master01.k8s.io master1 192.168.xxx.xxx master02.k8s.io master2 192.168.xxx.xxx master03.k8s.io master3 192.168.xxx.xxx node01.k8s.io node1 192.168.xxx.xxx node01.k8s.io node2 192.168.xxx.xxx node01.k8s.io node3 EOF ping node1或ping node01.k8s.io #确认配置生效将桥接的IPv4流量传递到iptables的链
cat > /etc/sysctl.conf<< EOF net.ipv4.ip_forward=1= 1 EOF sysctl -p # 生效
#所有master节点部署keepalived
yum install -y conntrack-tools libseccomp libtool-ltdl
yum install -y keepalived
#master1节点配置
! Configuration File for keepalived
global_defs {
router_id k8s
}
vrrp_script check_haproxy {
script "killall -0 haproxy"
interval 3
weight -2
fall 10
rise 2
}
vrrp_instance VI_1 {
state MASTER
interface ens33
virtual_router_id 51
priority 250
advert_int 1
authentication {
auth_type PASS
auth_pass ceb1b3ec013d66163d6ab
}
virtual_ipaddress {
192.168.78.99
}
track_script {
check_haproxy
}
}
#Master2节点配置
! Configuration File for keepalived
global_defs {
router_id k8s
}
vrrp_script check_haproxy {
script "killall -0 haproxy"
interval 3
weight -2
fall 10
rise 2
}
vrrp_instance VI_1 {
state BACKUP
interface ens33
virtual_router_id 51
priority 200
advert_int 1
authentication {
auth_type PASS
auth_pass ceb1b3ec013d66163d6ab
}
virtual_ipaddress {
192.168.78.99
}
track_script {
check_haproxy
}
}
#Master3节点配置
! Configuration File for keepalived
global_defs {
router_id k8s
}
vrrp_script check_haproxy {
script "killall -0 haproxy"
interval 3
weight -2
fall 10
rise 2
}
vrrp_instance VI_1 {
state BACKUP
interface ens33
virtual_router_id 51
priority 150
advert_int 1
authentication {
auth_type PASS
auth_pass ceb1b3ec013d66163d6ab
}
virtual_ipaddress {
192.168.78.99
}
track_script {
check_haproxy
}
}
启动keepalived
$ systemctl start keepalived.service 设置开机启动 $ systemctl enable keepalived.service查看启动状态
$ systemctl status keepalived.service
#部署haproxy
yum install -y haproxy
#master节点的配置均相同
cat > /etc/haproxy/haproxy.cfg << EOF
#---------------------------------------------------------------------
# Global settings
#---------------------------------------------------------------------
global
# to have these messages end up in /var/log/haproxy.log you will
# need to:
# 1) configure syslog to accept network log events. This is done
# by adding the '-r' option to the SYSLOGD_OPTIONS in
# /etc/sysconfig/syslog
# 2) configure local2 events to go to the /var/log/haproxy.log
# file. A line like the following can be added to
# /etc/sysconfig/syslog
#
# local2.* /var/log/haproxy.log
#
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
daemon
# turn on stats unix socket
stats socket /var/lib/haproxy/stats
#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
# use if not designated in their block
#---------------------------------------------------------------------
defaults
mode http
log global
option httplog
option dontlognull
option http-server-close
option forwardfor except 127.0.0.0/8
option redispatch
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
maxconn 3000
#---------------------------------------------------------------------
# kubernetes apiserver frontend which proxys to the backends
#---------------------------------------------------------------------
frontend kubernetes-apiserver
mode tcp
bind *:16443
option tcplog
default_backend kubernetes-apiserver
#---------------------------------------------------------------------
# round robin balancing between the various backends
#---------------------------------------------------------------------
backend kubernetes-apiserver
mode tcp
balance roundrobin
server master01.k8s.io 192.168.xxx.xxx:6443 check
server master02.k8s.io 192.168.xxx.xxx:6443 check
server master02.k8s.io 192.168.xxx.xxx:6443 check
#---------------------------------------------------------------------
# collection haproxy statistics message
#---------------------------------------------------------------------
listen stats
bind *:1080
stats auth admin:awesomePassword
stats refresh 5s
stats realm HAProxy Statistics
stats uri /admin?stats
EOF
设置开机启动
$ systemctl enable haproxy # 开启haproxy $ systemctl start haproxy
#添加阿里云YUM软件源
cat > /etc/yum.repos.d/kubernetes.repo << EOF [kubernetes] name=Kubernetes baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64 enabled=1 gpgcheck=0 repo_gpgcheck=0 gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg EOF
#安装kubeadm，kubelet和kubectl
$ yum install -y kubelet-1.18.17.3 kubeadm-1.18.17 kubectl-1.18.17 $ systemctl enable kubelet
#部署Kubernetes Master
#在具有vip的master上操作
$ mkdir /usr/local/kubernetes/manifests -p
$ cd /usr/local/kubernetes/manifests/
$ vi kubeadm-config.yaml
apiServer:
certSANs:
- master1
- master2
- master3
- master.k8s.io
- 192.168.xxx.xxx
- 192.168.xxx.xxx
- 192.168.xxx.xxx
- 192.168.xxx.xxx
- 127.0.0.1
extraArgs:
authorization-mode: Node,RBAC
timeoutForControlPlane: 24m0s
apiVersion: kubeadm.k8s.io/v1beta1
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controlPlaneEndpoint: "master.k8s.io:16443"
controllerManager: {}
dns:
type: CoreDNS
etcd:
local:
dataDir: /var/lib/etcd
imageRepository: k8s.gcr.io
kind: ClusterConfiguration
kubernetesVersion: v1.18.17
networking:
dnsDomain: cluster.local
podSubnet: 10.244.0.0/16
serviceSubnet: 10.96.0.0/16
scheduler: {}
#在master1节点执行
$ kubeadm init --config kubeadm-config.yaml
#按照提示保存以下内容，一会要使用（kubeadm init中的回显内容）：
$ kubeadm join master.k8s.io:16443 --token so98j9.uv20vfmsmaffx3fz
--discovery-token-ca-cert-hash sha256:9233a9cdc38366a708f9bfaacabdc6626a606c36f973cca6c65924dc4b87d013
--control-plane
#按照提示配置环境变量，使用kubectl工具：
$ mkdir -p $HOME/.kube $ sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config $ sudo chown $(id -u):$(id -g) $HOME/.kube/config
#安装集群网络
$ curl https://docs.projectcalico.org/v3.11/manifests/calico-typha.yaml -o calico.yaml
#修改集群网络
$ Kubectl apply -f calico.yml
#master2节点加入集群
$ ssh root@192.168.xxx.xxx mkdir -p /etc/kubernetes/pki/etcd
$ scp /etc/kubernetes/admin.conf root@192.168.xxx.xxx:/etc/kubernetes
$ scp /etc/kubernetes/pki/{ca.*,sa.*,front-proxy-ca.*} root@192.168.xxx.xxx:/etc/kubernetes/pki
$ scp /etc/kubernetes/pki/etcd/ca.* root@192.168.xxx.xxx:/etc/kubernetes/pki/etcd
$ kubeadm join master.k8s.io:16443 --token a8r4cl.ipnc8uwnwg35alhn
--discovery-token-ca-cert-hash sha256:2686517c55d2093a7e59ca34ecf72a1a44b36b416e1c2d9ac15565e5b2affb39
--control-plane
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
#Master3节点加入集群
$ ssh root@192.168.xxx.xxx mkdir -p /etc/kubernetes/pki/etcd
$ scp /etc/kubernetes/admin.conf root@192.168.xxx.xxx:/etc/kubernetes
$ scp /etc/kubernetes/pki/{ca.*,sa.*,front-proxy-ca.*} root@192.168.xxx.xxx:/etc/kubernetes/pki
$ scp /etc/kubernetes/pki/etcd/ca.* root@192.168.xxx.xxx:/etc/kubernetes/pki/etcd
$ kubeadm join master.k8s.io:16443 --token a8r4cl.ipnc8uwnwg35alhn
--discovery-token-ca-cert-hash sha256:2686517c55d2093a7e59ca34ecf72a1a44b36b416e1c2d9ac15565e5b2affb39
--control-plane
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Kubernetes Node
在node1上执行
向集群添加新节点，执行在kubeadm init输出的kubeadm join命令（之前kubeadm init回显内容，注意不加--control-plane）：
$ kubeadm join master.k8s.io:16443 --token a8r4cl.ipnc8uwnwg35alhn
--discovery-token-ca-cert-hash sha256:2686517c55d2093a7e59ca34ecf72a1a44b36b416e1c2d9ac15565e5b2affb39
$ kubectl get nodes
$ kubectl get pods -n kube-system
$ kubectl get cs
附相关包和组件
QQ:1279971605 获取，阿里云盘无法分享
