如何对Kubernetes进行多节点部署

这篇文章给大家分享的是有关Kubernetes多节点部署的内容。小编觉得挺实用的，因此分享给大家学习。如下资料是关于Kubernetes多节点部署的内容。

环境准备

资源包链接:

https://pan.baidu.com/s/183G9ZzBNdcUUFV7Y8-K4CQ 提取码：6z0j 

一、部署Master2

1.远程复制master的相关目录

• 关闭防火墙及安全功能

systemctl stop firewalld.servicesetenforce 0

• 复制kubernetes目录到master2

scp -r /opt/kubernetes/ root@192.168.142.120:/opt

• 复制etcd目录到master2(内含证书)

scp -r /opt/etcd/ root@192.168.142.120:/opt

• 复制服务启动脚本到master2

scp /usr/lib/systemd/system/{kube-apiserver,kube-controller-manager,kube-scheduler}.service root@192.168.142.120:/usr/lib/systemd/system/

2.修改kube-apiserver配置文件

vim /opt/kubernetes/cfg/kube-apiserver#将第5和7行IP地址改为master2主机的地址--bind-address=192.168.142.120 \--advertise-address=192.168.142.120 \

3.启动服务并设定开机自启

systemctl start kube-apiserver.service systemctl enable kube-apiserver.servicesystemctl start kube-controller-manager.service systemctl enable kube-controller-manager.servicesystemctl start kube-scheduler.servicesystemctl enable kube-scheduler.service

4.追加环境变量并生效

vim /etc/profile#末尾追加export PATH=$PATH:/opt/kubernetes/bin/source /etc/profile

5.查看node节点

kubectl get node

NAME              STATUS   ROLES    AGE     VERSION192.168.142.130   Ready       10d12h   v1.12.3192.168.142.131   Ready       10d11h   v1.12.3

二、Nginx负载均衡部署-keeplived服务

1.在lbm&lbb端的操作,安装nginx服务

• 把nginx.sh和keepalived.conf脚本拷贝到家目录(后面会用到)

#nginx.shcat > /etc/yum.repos.d/nginx.repo << EOF[nginx]name=nginx repobaseurl=http://nginx.org/packages/centos/7/$basearch/gpgcheck=0EOFstream {   log_format  main  '$remote_addr $upstream_addr - [$time_local] $status $upstream_bytes_sent';    access_log  /var/log/nginx/k8s-access.log  main;    upstream k8s-apiserver {        server 10.0.0.3:6443;        server 10.0.0.8:6443;    }    server {                listen 6443;                proxy_pass k8s-apiserver;    }    }

#keepalived.conf! Configuration File for keepalived global_defs {    # 接收邮件地址    notification_email {      acassen@firewall.loc      failover@firewall.loc      sysadmin@firewall.loc    }    # 邮件发送地址    notification_email_from Alexandre.Cassen@firewall.loc     smtp_server 127.0.0.1    smtp_connect_timeout 30    router_id NGINX_MASTER } vrrp_script check_nginx {    script "/usr/local/nginx/sbin/check_nginx.sh"}vrrp_instance VI_1 {     state MASTER     interface eth0    virtual_router_id 51 # VRRP 路由 ID实例，每个实例是唯一的     priority 100    # 优先级，备服务器设置 90     advert_int 1    # 指定VRRP 心跳包通告间隔时间，默认1秒     authentication {         auth_type PASS              auth_pass 1111     }      virtual_ipaddress {         10.0.0.188/24     }     track_script {        check_nginx    } }mkdir /usr/local/nginx/sbin/ -pvim /usr/local/nginx/sbin/check_nginx.shcount=$(ps -ef |grep nginx |egrep -cv "grep|$$")if [ "$count" -eq 0 ];then    /etc/init.d/keepalived stopfichmod +x /usr/local/nginx/sbin/check_nginx.sh

• 编辑nginx.repo文件

vim /etc/yum.repos.d/nginx.repo[nginx]name=nginx repobaseurl=http://nginx.org/packages/centos/7/$basearch/gpgcheck=0

• 安装nginx服务

yum install nginx -y

• 添加四层转发

vim /etc/nginx/nginx.conf#在第12行下追加以下内容stream {   log_format  main  '$remote_addr $upstream_addr - [$time_local] $status $upstream_bytes_sent';    access_log  /var/log/nginx/k8s-access.log  main;    upstream k8s-apiserver {        server 192.168.142.129:6443;        #此处为master的ip地址        server 192.168.142.120:6443;        #此处为master2的ip地址    }    server {                listen 6443;                proxy_pass k8s-apiserver;    }    }

2.部署keeplived服务

#安装keepalivedyum install keepalived -y复制前面的keepalived.conf配置文件，覆盖安装后原有的配置文件cp keepalived.conf /etc/keepalived/keepalived.confvim /etc/keepalived/keepalived.confscript "/etc/nginx/check_nginx.sh"      #18行,目录改为/etc/nginx/，脚本后写interface ens33     #23行,eth0改为ens33，此处的网卡名称可以使用ifconfig命令查询virtual_router_id 51        #24行,vrrp路由ID实例，每个实例是唯一的priority 100            #25行,优先级，备服务器设置90virtual_ipaddress {     #31行,192.168.142.20/24   #32行,vip地址改为之前设定好的192.168.142.20#38行以下全部删除vim /etc/nginx/check_nginx.sh#统计数量       count=$(ps -ef |grep nginx |egrep -cv "grep|$$")    #统计数量#匹配为0，关闭keepalived服务if [ "$count" -eq 0 ];then    systemctl stop keepalivedfichmod +x /etc/nginx/check_nginx.sh#启动服务systemctl start keepalived

• 查看地址信息

ip a

# lbm地址信息2: ens33:  mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:0c:29:eb:11:2a brd ff:ff:ff:ff:ff:ff    inet 192.168.142.140/24 brd 192.168.142.255 scope global ens33       valid_lft forever preferred_lft forever    inet 192.168.142.20/24 scope global secondary ens33  //漂移地址在lb01中       valid_lft forever preferred_lft forever    inet6 fe80::53ba:daab:3e22:e711/64 scope link        valid_lft forever preferred_lft forever#lbb地址信息2: ens33:  mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:0c:29:c9:9d:88 brd ff:ff:ff:ff:ff:ff    inet 192.168.142.150/24 brd 192.168.142.255 scope global ens33       valid_lft forever preferred_lft forever    inet6 fe80::55c0:6788:9feb:550d/64 scope link        valid_lft forever preferred_lft forever

• 验证地址漂移

#停止lbm端的nginx服务pkill nginx#查看服务状态systemctl status nginxsystemctl status keepalived.service#此时判断条件若为0，keepalived服务则是停止的ps -ef |grep nginx |egrep -cv "grep|$$"

• 查看地址信息

ip a

# lbm地址信息2: ens33:  mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:0c:29:eb:11:2a brd ff:ff:ff:ff:ff:ff    inet 192.168.142.140/24 brd 192.168.142.255 scope global ens33       valid_lft forever preferred_lft forever    inet6 fe80::53ba:daab:3e22:e711/64 scope link        valid_lft forever preferred_lft forever#lbb地址信息2: ens33:  mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:0c:29:c9:9d:88 brd ff:ff:ff:ff:ff:ff    inet 192.168.142.150/24 brd 192.168.142.255 scope global ens33       valid_lft forever preferred_lft forever    inet 192.168.142.20/24 scope global secondary ens33  //漂移地址在lb01中       valid_lft forever preferred_lft forever    inet6 fe80::55c0:6788:9feb:550d/64 scope link        valid_lft forever preferred_lft forever

• 恢复操作

#在lbm端启动nginx和keepalived服务systemctl start nginxsystemctl start keepalived

• 漂移地址回归lbm端

ip a

# lbm地址信息2: ens33:  mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:0c:29:eb:11:2a brd ff:ff:ff:ff:ff:ff    inet 192.168.142.140/24 brd 192.168.142.255 scope global ens33       valid_lft forever preferred_lft forever    inet 192.168.142.20/24 scope global secondary ens33  //漂移地址在lb01中       valid_lft forever preferred_lft forever    inet6 fe80::53ba:daab:3e22:e711/64 scope link        valid_lft forever preferred_lft forever

三、node节点修改配置文件统一VIP（bootstrap.kubeconfig,kubelet.kubeconfig）

cd /opt/kubernetes/cfg/#配置文件统一修改为VIPvim /opt/kubernetes/cfg/bootstrap.kubeconfigserver: https://192.168.142.20:6443     #第5行改为Vip的地址vim /opt/kubernetes/cfg/kubelet.kubeconfigserver: https://192.168.142.20:6443 #第5行改为Vip的地址vim /opt/kubernetes/cfg/kube-proxy.kubeconfigserver: https://192.168.142.20:6443     #第5行改为Vip的地址

• 替换完成后自检

grep 20 *

bootstrap.kubeconfig:    server: https://192.168.142.20:6443kubelet.kubeconfig:    server: https://192.168.142.20:6443kube-proxy.kubeconfig:    server: https://192.168.142.20:6443

• 在lb01上查看nginx的k8s日志

tail /var/log/nginx/k8s-access.log

192.168.142.140 192.168.142.129:6443 - [08/Feb/2020:19:20:40 +0800] 200 1119192.168.142.140 192.168.142.120:6443 - [08/Feb/2020:19:20:40 +0800] 200 1119192.168.142.150 192.168.142.129:6443 - [08/Feb/2020:19:20:44 +0800] 200 1120192.168.142.150 192.168.142.120:6443 - [08/Feb/2020:19:20:44 +0800] 200 1120

四、创建Pod

• 测试创建Pod

kubectl run nginx --image=nginx

• 查看状态

kubectl get pods

• 绑定群集中的匿名用户赋予管理员权限(解决日志不可看问题)

kubectl create clusterrolebinding cluster-system-anonymous --clusterrole=cluster-admin --user=system:anonymous

• 查看Pod网络

kubectl get pods -o wid

五、创建UI显示界面

• 在master1上创建dashborad工作目录

mkdir /k8s/dashboardcd /k8s/dashboard#上传官方的文件到该目录中

• 创建页面，注意顺序

#授权访问apikubectl create -f dashboard-rbac.yaml#进行加密kubectl create -f dashboard-secret.yaml#配置应用kubectl create -f dashboard-configmap.yaml#控制器kubectl create -f dashboard-controller.yaml#发布出去进行访问kubectl create -f dashboard-service.yaml

• 完成后查看创建在指定的kube-system命名空间下

kubectl get pods -n kube-system

• 查看如何访问

kubectl get pods,svc -n kube-system

• 在浏览器中输入nodeIP地址就可以访问(谷歌浏览器无法访问题解决方法)

1.在master端操作,编写进行证书自签

vim dashboard-cert.shcat > dashboard-csr.json <

2.重新应用新的自签证书

bash dashboard-cert.sh /root/k8s/apiserver/

3.修改yaml文件

vim dashboard-controller.yaml#在47行下追加以下内容          - --tls-key-file=dashboard-key.pem          - --tls-cert-file=dashboard.pem

4.重新进行部署

kubectl apply -f dashboard-controller.yaml

5.生成登录令牌

• 生成令牌

kubectl create -f k8s-admin.yaml

• 将令牌保存

kubectl get secret -n kube-system

NAME                               TYPE                                  DATA   AGEdashboard-admin-token-drs7c        kubernetes.io/service-account-token   3      60sdefault-token-mmvcg                kubernetes.io/service-account-token   3      55mkubernetes-dashboard-certs         Opaque                                10     10mkubernetes-dashboard-key-holder    Opaque                                2      23mkubernetes-dashboard-token-crqvs   kubernetes.io/service-account-token   3      23m

• 查看令牌

kubectl describe secret dashboard-admin-token-drs7c -n kube-system

6.复制粘贴令牌后,登录到UI界面

看完这篇文章，你们学会Kubernetes多节点部署的方法了吗？如果还想学到更多技能或想了解更多相关内容，欢迎关注行业资讯频道，感谢各位的阅读！