机加工外贸网站,c网站制作,thinkphp 网站开发,c 网站开发 视频k8s集群部署的时候会遇到很多的坑#xff0c;即使看网上的文档也可能遇到各种的坑。
安装准备
1、虚拟机两台#xff08;ip按自己的网络环境相应配置#xff09;(master/node)
192.168.100.215 k8s-master 192.168.100.216 k8s-node1 2、关闭防火墙(master/node)
system…k8s集群部署的时候会遇到很多的坑即使看网上的文档也可能遇到各种的坑。
安装准备
1、虚拟机两台ip按自己的网络环境相应配置(master/node)
192.168.100.215 k8s-master 192.168.100.216 k8s-node1 2、关闭防火墙(master/node)
systemctl stop firewalld systemctl disable firewalld 3、关闭selinux(master/node) setenforce 0 # 临时关闭 sed -i ‘s/SELINUXenforcing/SELINUXdisabled/g’ /etc/selinux/config # 永久关闭 4、关闭swap(master/node) swapoff -a # 临时关闭关闭swap主要是为了性能考虑 free # 可以通过这个命令查看swap是否关闭了 sed -ri ‘s/.swap./#/’ /etc/fstab # 永久关闭 5、添加主机名与IP对应的关系(master/node) $ vim /etc/hosts #添加如下内容 192.168.100.215 k8s-master 192.168.100.216 k8s-node1 #保存退出 6、修改主机名(master/node) #k8s-master [rootlocalhost ~] hostname localhost.localdomain [rootlocalhost ~] hostname k8s-master ##临时生效 [rootlocalhost ~] hostnamectl set-hostname k8s-master ##重启后永久生效 #k8s-node1 [rootlocalhost ~] hostname localhost.localdomain [rootlocalhost ~] hostname k8s-node1 ##临时生效 [rootlocalhost ~] hostnamectl set-hostname k8s-node1 ##重启后永久生效 7、桥接设置(master/node) $ cat /etc/sysctl.d/k8s.conf EOF net.bridge.bridge-nf-call-ip6tables 1 net.bridge.bridge-nf-call-iptables 1 EOF $ sysctl --system p.s.
以上几步最好照着都执行一下以免后面报一大堆错。
安装docker
这一步需要注意docker版本与k8s版本对照关系否则执行master初始化的时候会报错。
部署Kubernetes (master)
kubeadm init kubeadm init –apiserver-advertise-address192.168.100.215 –image-repository registry.aliyuncs.com/google_containers –kubernetes-version v1.18.0 –service-cidr10.1.0.0/16 –pod-network-cidr10.244.0.0/16
执行命令会出现可能一些告警需要处理一下
cgroupfs切换为systemd
[WARNING IsDockerSystemdCheck]: detected “cgroupfs” as the Docker cgroup driver. The recommended driver is “systemd”. Please follow the guide at https://kubernetes.io/docs/setup/cri/
解决方案 新建daemon.json切换为systemd
mkdir /etc/docker/ cat /etc/docker/daemon.json EOF { “registry-mirrors”: [“https://gqs7xcfd.mirror.aliyuncs.com”,“https://hub-mirror.c.163.com”], “exec-opts”: [“native.cgroupdriversystemd”], “log-driver”: “json-file”, “log-opts”: { “max-size”: “100m” }, “storage-driver”: “overlay2” } EOF
Docker 与k8s版本不兼容
[WARNING SystemVerification]: this Docker version is not on the list of validated versions: 24.0.7. Latest validated version: 19.03
解决方案 删除旧版本的docker sudo yum remove docker-ce sudo rm -rf /var/lib/docker
安装兼容版本的docker yum -y install docker-ce-19.03.9-3.el7 docker-ce-cli-19.03.9-3.el7 systemctl enable docker systemctl start docker
在两台Node节点上执行join命令
kubeadm join 192.168.200.128:6443 --token 29f2jw.4lczl18ymfnzcax7 –discovery-token-ca-cert-hash sha256:57e05025b3a40415cd9297e089f0439f265a6e5df46ff1b431e017f326b313
cannot stat ‘/etc/kubernetes/admin.conf’
从master节点拷贝过来。
# master节点执行
[rootmaster ~]# scp /etc/kubernetes/admin.conf root192.168.247.137:/etc/kubernetes/admin.conf
The authenticity of host 192.168.247.137 (192.168.247.137) cant be established.
ECDSA key fingerprint is SHA256:oj2gGnDvkzbSIggsOxKVwMTVP2zxClBoNEPXmHvzk.
ECDSA key fingerprint is MD5:fa:f6:9a:89:1a:4a:54:63:fe:3d:70:88:c4:a4:4d:ea.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 192.168.247.137 (ECDSA) to the list of known hosts.
root192.168.247.137s password:
admin.conf 100% 5451 3.5MB/s 00:00 # node节点执行
[rootslave2 ~]# echo export KUBECONFIG/etc/kubernetes/admin.conf ~/.bash_profile
[rootslave2 ~]# source ~/.bash_profile
[rootslave2 ~]# chown $(id -u):$(id -g) $HOME/.kube/config# 验证
[rootslave2 ~]# kubectl get pod
NAME READY STATUS RESTARTS AGE
nginx-6867cdf567-vkf99 1/1 Running 0 6m38snode节点 kubectl get nodes 报错
error: no configuration has been provided, try setting KUBERNETES_MASTER environment variable
[rootlocalhost ~]# kubectl get nodes
error: no configuration has been provided, try setting KUBERNETES_MASTER environment variable解决方案
[rootlocalhost ~]# find / -name admin.conf
/etc/kubernetes/admin.conf
[rootlocalhost ~]# mkdir -p $HOME/.kube
[rootlocalhost ~]# sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
[rootlocalhost ~]# sudo chown $(id -u):$(id -g) $HOME/.kube/config
删除pod service deployment
删除service
kubectl delete deployment grafana -n kube-system
kubectl delete service grafana -n kube-system
kubectl delete serviceaccount grafana -n kube-system
kubectl delete serviceaccount grafana -n kube-system --force --grace-period0查看
kubectl get pods,deployments,services,serviceaccounts -n kube-system | grep grafana删除 deployment
kubectl delete deployment monitoring-grafana -n kube-system
kubectl delete pod monitoring-grafana-b46f4c778-z74wg -n kube-system
