Kubeadm安装K8s失败记录

在我部署 k8s 的时候，最近会遇到 flannel 一直重启的情况（报错 pod cidr not assigne）

vim /etc/kubernetes/manifests/kube-controller-manager.yaml

- --allocate-node-cidrs=true
- --cluster-cidr=10.244.0.0/16

systemctl restart kubelet

k8s-kubeadm单节点搭建导致主节点污点禁止pod运行

#查看污点
kubectl describe nodes master | grep -A 3 Taints
#删除
kubectl taint nodes <node> <taints>-
#一次删除多个
kubectl taint nodes --all node-role.kubernetes.io/control-plane- node-role.kubernetes.io/master-

k8s-kubeadm-containerd搭建网络通讯问题

vim /etc/kubernetes/manifests/kube-controller-manager.yaml
增加参数：

- --allocate-node-cidrs=true
- --cluster-cidr=10.244.0.0/16

systemctl restart kubelet

K8s "tab" 报错

yum install bash-completion -y
source /usr/share/bash-completion/bash_completion
source <(kubectl completion bash)

安装 K8s 失败，发现缺少一下模块

添加模块

cat > /etc/sysconfig/modules/ipvs.modules <<EOF    
#!/bin/bash
modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack
EOF

加载

modprobe br_netfilter
lsmod | grep netfilter
sysctl -p /etc/sysctl.d/k8s.conf
sysctl --system

替换镜像源

sed -i 's#sandbox_image = "k8s.gcr.io/pause:3.6"#sandbox_image = "registry.aliyuncs.com/google_containers/pause:3.6"#' /etc/containerd/config.toml

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Kubeadm安装K8s失败记录

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