RKE摆设k8s

移除docker（非须要）

1. rm -rf /etc/docker
2. rm -rf /run/docker
3. rm -rf /var/lib/dockershim
4. rm -rf /var/lib/docker
5. yum list installed | grep docker
6. yum remove ***

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rke摆设k8s集群

1. cat > /etc/sysctl.conf << EFO
2. net.ipv4.ip_forward = 1
3. net.bridge.bridge-nf-call-ip6tables = 1
4. net.bridge.bridge-nf-call-iptables = 1
5. EFO
6. modprobe br_netfilter
7. sysctl -p
8. yum-config-manager  --add-repo  http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
9. yum install -y docker-ce-20.10.9-3.el7
10. useradd rke && usermod -aG docker rke
11. ./rke_linux-amd64 config --name cluster.yml
12. ./rke_linux-amd64 up

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假如必要增长node节点大概etcd节点，只必要更改cluster.yml后rke up --update-only即可
安装kubectl

1. cat > /etc/yum.repos.d/kubenetes.repo <<EOF
3. [kubernetes]
4. name=Kubernetes
5. baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
6. gpgcheck=1
7. gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
8. enabled=1
9. EOF

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安装乐成之后会在当前目次天生kube_config_cluster.yml文件，此为k8s的kube_config文件，必要设置kubectl默认读取文件才可实行kubectl下令举行查询

1. kubectl --kubeconfig kube_config_cluster.yml get node

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1. yum install -y kubectl
2. kubectl get node

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安装helm

1. wget https://get.helm.sh/helm-v3.11.3-linux-amd64.tar.gz
2. cd linux-amd64
3. cp helm /usr/bin/

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新增节点

1. 更改文件并只更新即可
2. ./rke_linux-amd64 up --update-only

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安装rancher

1. helm repo add rancher-latest https://releases.rancher.com/server-charts/latest
3. kubectl create namespace cattle-system
5. kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.11.0/cert-manager.crds.yaml
7. helm repo add jetstack https://charts.jetstack.io
9. helm repo update
11. helm install cert-manager jetstack/cert-manager \
12.   --namespace cert-manager \
13.   --create-namespace \
14.   --version v1.11.0

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1. helm install rancher rancher-latest/rancher \
2.   --namespace cattle-system \
3.   --set hostname=<IP_OF_LINUX_NODE>.sslip.io \
4.   --set replicas=1 \
5.   --set bootstrapPassword=<PASSWORD_FOR_RANCHER_ADMIN>

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此处暗码最少12个字符
FAQ

假如出现错误Error: INSTALLATION FAILED: execution error at (rancher/templates/validate-psp-install.yaml:4:5): The target cluster does not have the PodSecurityPolicy API resource. Please disable PSPs in this chart before proceeding.
则在install的时间加上--set global.cattle.psp.enabled=false选项
FATA[0001] Cluster must have at least one etcd plane host: failed to connect to the following etcd host(s) []

1. yum update openssh -y
2. vim /etc/ssh/sshd_config
3.         AllowTcpForwarding yes

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