[root@localhost /]# cat k8s.master.conf
1 吃的/
2 cd /
3 hostnamectl set-hostname master
4 cat <>/etc/hosts
192.168.27.32 master
192.168.27.34 node1
192.168.27.35 node2
EOF
5 systemctl stop firewalld
6 systemctl disable firewalld
7 setenforce 0
8 sed -i "s/^SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
9 swapoff -a
10 sed -i 's/.*swap.*/#&/' /etc/fstab
11 cat > /etc/sysctl.d/k8s.conf <
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
12 sysctl --system
13 yum install -y wget
14 cd etc/yum.repos.d/
15 ls
16 ip route add default via 192.168.27.1
17 echo "nameserver 114.114.114.114" >> /etc/resolv.conf
18 echo "nameserver 8.8.8.8" >> /etc/resolv.conf
19 ping
20 yum install -y wget
21 mkdir /etc/yum.repos.d/bak && mv /etc/yum.repos.d/*.repo /etc/yum.repos.d/bak
22 wget -O /etc/yum.repos.d/CentOS-Base.repo
23 wget -O /etc/yum.repos.d/epel.repo
24 yum clean all && yum makecache
25 cat < /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=
EOF
26 wget -O /etc/yum.repos.d/docker-ce.repo
27 yum install -y docker-ce-18.06.1.ce-3.el7
28 systemctl enable docker && systemctl start docker
29 yum install -y kubelet kubeadm kubectl
30 systemctl enable kubelet
31 kubelet --version
32 kubeadm init --kubernetes-version=1.17.0 --apiserver-advertise-address=192.168.27.32 --image-repository registry.aliyuncs.com/google_containers --service-cidr=10.1.0.0/16 --pod-network-cidr=10.244.0.0/16
33 mkdir -p /root/.kube
34 cp /etc/kubernetes/admin.conf /root/.kube/config
35 kubectl get nodes
36 kubectl get cs
37 cd /
38 kubectl get cs
39 kubectl get nodes
40 history > k8s.master.conf
[root@localhost /]#
k8s node
[root@localhost /]# cat k8s.node1.conf
1 吃的/
2 cd /
3 hostnamectl set-hostname node1
4 cat <>/etc/hosts
192.168.27.32 master
192.168.27.34 node1
192.168.27.35 node2
EOF
5 systemctl stop firewalld
6 systemctl disable firewalld
7 setenforce 0
8 sed -i "s/^SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
9 swapoff -a
10 sed -i 's/.*swap.*/#&/' /etc/fstab
11 cat > /etc/sysctl.d/k8s.conf <
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
12 sysctl --system
13 ip route add default via 192.168.27.1
14 echo "nameserver 114.114.114.114" >> /etc/resolv.conf
15 echo "nameserver 8.8.8.8" >> /etc/resolv.conf
16 yum install -y wget
17 mkdir /etc/yum.repos.d/bak && mv /etc/yum.repos.d/*.repo /etc/yum.repos.d/bak
18 wget -O /etc/yum.repos.d/CentOS-Base.repo
19 wget -O /etc/yum.repos.d/epel.repo
20 yum clean all && yum makecache
21 cat < /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=
EOF
22 wget -O /etc/yum.repos.d/docker-ce.repo
23 yum install -y docker-ce-18.06.1.ce-3.el7
24 systemctl enable docker && systemctl start docker
25 yum install -y kubelet kubeadm kubectl
26 systemctl enable kubelet
27 kubelet version
28 kubelet -version
29 kubelet --version
30 kubeadm join 192.168.27.32:6443 --token 74rsnp.l2nhrg6fqhhhwkc9 --discovery-token-ca-cert-hash sha256:d932705b20da0d7783b389827827f39273bf3e27db5633d469f762e425826ad0
31 history > k8s.node1.conf
[root@localhost /]#
容器网络 docker network / DNS
k8s网络之Calico网络 IPIP及BGP两种模式
https://www.cnblogs.com/goldsunshine/p/10701242.html
k8s卸载flannel网络
https://blog.csdn.net/weixin_34409741/article/details/92513036
#第一步，在master节点删除flannel
kubectl delete -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
#第二步，在node节点清理flannel网络留下的文件
ifconfig cni0 down
ip link delete cni0
ifconfig flannel.1 down
ip link delete flannel.1
rm -rf /var/lib/cni/
rm -f /etc/cni/net.d/*
注：执行完上面的操作，重启kubelet
#第三步，应用calico相关的yaml文件
调试
kubectl describe
kubectl logs
systemctl status
journal -u
yum的repo问题
kubeadm init 后master一直处于notready状态
查看日志定位问题 journalctl -f -u kubelet.service
Unable to update cni config: no networks found in /etc/cni/net.d
查看pod的日志kubectl describe pod ku
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