使用rancher rke快速安装k8s集群 - ToB企服应用市场:ToB评测及商务社交产业平台

172.18.1.55 master
172.18.1.58 worker01
172.18.1.59 worker02
172.18.1.60 worker03

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$ wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo
$ yum -y install docker-ce-23.0.1 docker-ce-cli-23.0.1

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$ systemctl enable docker && systemctl start docker

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$ useradd rancher
$ usermod -aG docker rancher
$ echo 123|passwd --stdin rancher

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$ mv rke_linux-amd64 rke

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$ mv rke /usr/local/bin/
$ chmod +x rke

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$ ssh-keygen

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$ ssh-copy-id rancher@master
$ ssh-copy-id rancher@worker01
$ ssh-copy-id rancher@worker02
$ ssh-copy-id rancher@worker03

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$ ssh rancher@worker01

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nodes:
- address: 172.18.1.55
port: "22"
role:
- etcd
- controlplane
user: rancher
docker_socket: /var/run/docker.sock
- address: "172.18.1.58"
port: "22"
role:
- worker
user: rancher
docker_socket: /var/run/docker.sock
- address: "172.18.1.59"
port: "22"
role:
- worker
user: rancher
docker_socket: /var/run/docker.sock
- address: "172.18.1.60"
port: "22"
role:
- worker
user: rancher
docker_socket: /var/run/docker.sock
kubernetes_version: "v1.25.13-rancher1" # 指定k8s的版本
services:
kube-api:
service_cluster_ip_range: 10.43.0.0/16
service_node_port_range: "30000-32767"
pod_security_policy: false
always_pull_images: true
secrets_encryption_config:
enabled: true
kube-controller:
cluster_cidr: 10.42.0.0/16
service_cluster_ip_range: 10.43.0.0/16
kubelet:
cluster_domain: cluster.local
cluster_dns_server: 10.43.0.10
fail_swap_on: false
generate_serving_certificate: false
kubeproxy:
extra_args:
proxy-mode: ipvs
network:
plugin: flannel
options:
flannel_iface: eth0
flannel_backend_type: vxlan
ssh_key_path: ~/.ssh/id_rsa
authorization:
mode: rbac
ignore_docker_version: true
ingress:
provider: nginx
network_mode: "hostNetwork"
cluster_name: "rkecluster"
system_images:
etcd: rancher/mirrored-coreos-etcd:v3.5.6
alpine: rancher/rke-tools:v0.1.90
nginx_proxy: rancher/rke-tools:v0.1.90
cert_downloader: rancher/rke-tools:v0.1.90
kubernetes_services_sidecar: rancher/rke-tools:v0.1.90
kubedns: rancher/mirrored-k8s-dns-kube-dns:1.22.20
dnsmasq: rancher/mirrored-k8s-dns-dnsmasq-nanny:1.22.20
kubedns_sidecar: rancher/mirrored-k8s-dns-sidecar:1.22.20
kubedns_autoscaler: rancher/mirrored-cluster-proportional-autoscaler:1.8.6
coredns: rancher/mirrored-coredns-coredns:1.9.4
coredns_autoscaler: rancher/mirrored-cluster-proportional-autoscaler:1.8.6
nodelocal: rancher/mirrored-k8s-dns-node-cache:1.22.20
kubernetes: rancher/hyperkube:v1.25.13-rancher1
flannel: rancher/mirrored-flannel-flannel:v0.21.4
flannel_cni: rancher/flannel-cni:v0.3.0-rancher8
calico_node: rancher/mirrored-calico-node:v3.25.0
calico_cni: rancher/calico-cni:v3.25.0-rancher1
calico_controllers: rancher/mirrored-calico-kube-controllers:v3.25.0
calico_ctl: rancher/mirrored-calico-ctl:v3.25.0
calico_flexvol: rancher/mirrored-calico-pod2daemon-flexvol:v3.25.0
canal_node: rancher/mirrored-calico-node:v3.25.0
canal_cni: rancher/calico-cni:v3.25.0-rancher1
canal_controllers: rancher/mirrored-calico-kube-controllers:v3.25.0
canal_flannel: rancher/mirrored-flannel-flannel:v0.21.4
canal_flexvol: rancher/mirrored-calico-pod2daemon-flexvol:v3.25.0
weave_node: weaveworks/weave-kube:2.8.1
weave_cni: weaveworks/weave-npc:2.8.1
pod_infra_container: rancher/mirrored-pause:3.7
ingress: rancher/nginx-ingress-controller:nginx-1.7.0-rancher1
ingress_backend: rancher/mirrored-nginx-ingress-controller-defaultbackend:1.5-rancher1
ingress_webhook: rancher/mirrored-ingress-nginx-kube-webhook-certgen:v20230312-helm-chart-4.5.2-28-g66a760794
metrics_server: rancher/mirrored-metrics-server:v0.6.3
windows_pod_infra_container: rancher/mirrored-pause:3.7
aci_cni_deploy_container: noiro/cnideploy:6.0.3.1.81c2369
aci_host_container: noiro/aci-containers-host:6.0.3.1.81c2369
aci_opflex_container: noiro/opflex:6.0.3.1.81c2369
aci_mcast_container: noiro/opflex:6.0.3.1.81c2369
aci_ovs_container: noiro/openvswitch:6.0.3.1.81c2369
aci_controller_container: noiro/aci-containers-controller:6.0.3.1.81c2369
aci_gbp_server_container: ""
aci_opflex_server_container: ""

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$ rke up

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$ curl -LO https://dl.k8s.io/release/v1.24.0/bin/linux/amd64/kubectl

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$ sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl

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$ kubectl version --client

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$ mkdir ~/.kube

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$ mv kube_config_cluster.yml ~/.kube/config

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$ kubectl get nodes

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$ kubectl get pods -n kube-system

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$ wget https://get.helm.sh/helm-v3.7.2-linux-amd64.tar.gz

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$ tar -zxvf helm-v3.7.2-linux-amd64.tar.gz

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$ sudo cp linux-amd64/helm /usr/local/bin

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$ helm version

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$ helm repo add rancher-stable https://rancher-mirror.rancher.cn/server-charts/stable

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#!/bin/bash
help ()
{
echo ' ================================================================ '
echo ' --ssl-domain: 生成ssl证书需要的主域名，如不指定则默认为www.rancher.local，如果是ip访问服务，则可忽略；'
echo ' --ssl-trusted-ip: 一般ssl证书只信任域名的访问请求，有时候需要使用ip去访问server，那么需要给ssl证书添加扩展IP，多个IP用逗号隔开；'
echo ' --ssl-trusted-domain: 如果想多个域名访问，则添加扩展域名（SSL_TRUSTED_DOMAIN）,多个扩展域名用逗号隔开；'
echo ' --ssl-size: ssl加密位数，默认2048；'
echo ' --ssl-cn: 国家代码(2个字母的代号),默认CN;'
echo ' --ca-cert-recreate: 是否重新创建 ca-cert，ca 证书默认有效期 10 年，创建的 ssl 证书有效期如果是一年需要续签，那么可以直接复用原来的 ca 证书，默认 false;'
echo ' 使用示例:'
echo ' ./create_self-signed-cert.sh --ssl-domain=www.test.com --ssl-trusted-domain=www.test2.com \ '
echo ' --ssl-trusted-ip=1.1.1.1,2.2.2.2,3.3.3.3 --ssl-size=2048 --ssl-date=3650'
echo ' ================================================================'
}
case "$1" in
-h|--help) help; exit;;
esac
if [[ $1 == '' ]];then
help;
exit;
fi
CMDOPTS="$*"
for OPTS in $CMDOPTS;
do
key=$(echo ${OPTS} | awk -F"=" '{print $1}' )
value=$(echo ${OPTS} | awk -F"=" '{print $2}' )
case "$key" in
--ssl-domain) SSL_DOMAIN=$value ;;
--ssl-trusted-ip) SSL_TRUSTED_IP=$value ;;
--ssl-trusted-domain) SSL_TRUSTED_DOMAIN=$value ;;
--ssl-size) SSL_SIZE=$value ;;
--ssl-date) SSL_DATE=$value ;;
--ca-date) CA_DATE=$value ;;
--ssl-cn) CN=$value ;;
--ca-cert-recreate) CA_CERT_RECREATE=$value ;;
--ca-key-recreate) CA_KEY_RECREATE=$value ;;
esac
done
# CA相关配置
CA_KEY_RECREATE=${CA_KEY_RECREATE:-false}
CA_CERT_RECREATE=${CA_CERT_RECREATE:-false}
CA_DATE=${CA_DATE:-3650}
CA_KEY=${CA_KEY:-cakey.pem}
CA_CERT=${CA_CERT:-cacerts.pem}
CA_DOMAIN=cattle-ca
# ssl相关配置
SSL_CONFIG=${SSL_CONFIG:-$PWD/openssl.cnf}
SSL_DOMAIN=${SSL_DOMAIN:-'www.rancher.local'}
SSL_DATE=${SSL_DATE:-3650}
SSL_SIZE=${SSL_SIZE:-2048}
## 国家代码(2个字母的代号),默认CN;
CN=${CN:-CN}
SSL_KEY=$SSL_DOMAIN.key
SSL_CSR=$SSL_DOMAIN.csr
SSL_CERT=$SSL_DOMAIN.crt
echo -e "\033[32m ---------------------------- \033[0m"
echo -e "\033[32m | 生成 SSL Cert | \033[0m"
echo -e "\033[32m ---------------------------- \033[0m"
# 如果存在 ca-key，并且需要重新创建 ca-key
if [[ -e ./${CA_KEY} ]] && [[ ${CA_KEY_RECREATE} == 'true' ]]; then
# 先备份旧 ca-key，然后重新创建 ca-key
echo -e "\033[32m ====> 1. 发现已存在 CA 私钥，备份 "${CA_KEY}" 为 "${CA_KEY}"-bak，然后重新创建 \033[0m"
mv ${CA_KEY} "${CA_KEY}"-bak-$(date +"%Y%m%d%H%M")
openssl genrsa -out ${CA_KEY} ${SSL_SIZE}
# 如果存在 ca-cert，因为 ca-key 重新创建，则需要重新创建 ca-cert。先备份然后重新创建 ca-cert
if [[ -e ./${CA_CERT} ]]; then
echo -e "\033[32m ====> 2. 发现已存在 CA 证书，先备份 "${CA_CERT}" 为 "${CA_CERT}"-bak，然后重新创建 \033[0m"
mv ${CA_CERT} "${CA_CERT}"-bak-$(date +"%Y%m%d%H%M")
openssl req -x509 -sha256 -new -nodes -key ${CA_KEY} -days ${CA_DATE} -out ${CA_CERT} -subj "/C=${CN}/CN=${CA_DOMAIN}"
else
# 如果不存在 ca-cert，直接创建 ca-cert
echo -e "\033[32m ====> 2. 生成新的 CA 证书 ${CA_CERT} \033[0m"
openssl req -x509 -sha256 -new -nodes -key ${CA_KEY} -days ${CA_DATE} -out ${CA_CERT} -subj "/C=${CN}/CN=${CA_DOMAIN}"
fi
# 如果存在 ca-key，并且不需要重新创建 ca-key
elif [[ -e ./${CA_KEY} ]] && [[ ${CA_KEY_RECREATE} == 'false' ]]; then
# 存在旧 ca-key，不需要重新创建，直接复用
echo -e "\033[32m ====> 1. 发现已存在 CA 私钥，直接复用 CA 私钥 "${CA_KEY}" \033[0m"
# 如果存在 ca-cert，并且需要重新创建 ca-cert。先备份然后重新创建
if [[ -e ./${CA_CERT} ]] && [[ ${CA_CERT_RECREATE} == 'true' ]]; then
echo -e "\033[32m ====> 2. 发现已存在 CA 证书，先备份 "${CA_CERT}" 为 "${CA_CERT}"-bak，然后重新创建 \033[0m"
mv ${CA_CERT} "${CA_CERT}"-bak-$(date +"%Y%m%d%H%M")
openssl req -x509 -sha256 -new -nodes -key ${CA_KEY} -days ${CA_DATE} -out ${CA_CERT} -subj "/C=${CN}/CN=${CA_DOMAIN}"
# 如果存在 ca-cert，并且不需要重新创建 ca-cert，直接复用
elif [[ -e ./${CA_CERT} ]] && [[ ${CA_CERT_RECREATE} == 'false' ]]; then
echo -e "\033[32m ====> 2. 发现已存在 CA 证书，直接复用 CA 证书 "${CA_CERT}" \033[0m"
else
# 如果不存在 ca-cert ，直接创建 ca-cert
echo -e "\033[32m ====> 2. 生成新的 CA 证书 ${CA_CERT} \033[0m"
openssl req -x509 -sha256 -new -nodes -key ${CA_KEY} -days ${CA_DATE} -out ${CA_CERT} -subj "/C=${CN}/CN=${CA_DOMAIN}"
fi
# 如果不存在 ca-key
else
# ca-key 不存在，直接生成
echo -e "\033[32m ====> 1. 生成新的 CA 私钥 ${CA_KEY} \033[0m"
openssl genrsa -out ${CA_KEY} ${SSL_SIZE}
# 如果存在旧的 ca-cert，先做备份，然后重新生成 ca-cert
if [[ -e ./${CA_CERT} ]]; then
echo -e "\033[32m ====> 2. 发现已存在 CA 证书，先备份 "${CA_CERT}" 为 "${CA_CERT}"-bak，然后重新创建 \033[0m"
mv ${CA_CERT} "${CA_CERT}"-bak-$(date +"%Y%m%d%H%M")
openssl req -x509 -sha256 -new -nodes -key ${CA_KEY} -days ${CA_DATE} -out ${CA_CERT} -subj "/C=${CN}/CN=${CA_DOMAIN}"
else
# 不存在旧的 ca-cert，直接生成 ca-cert
echo -e "\033[32m ====> 2. 生成新的 CA 证书 ${CA_CERT} \033[0m"
openssl req -x509 -sha256 -new -nodes -key ${CA_KEY} -days ${CA_DATE} -out ${CA_CERT} -subj "/C=${CN}/CN=${CA_DOMAIN}"
fi
fi
echo -e "\033[32m ====> 3. 生成 Openssl 配置文件 ${SSL_CONFIG} \033[0m"
cat > ${SSL_CONFIG} <<EOM
[req]
req_extensions = v3_req
distinguished_name = req_distinguished_name
[req_distinguished_name]
[ v3_req ]
basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
extendedKeyUsage = clientAuth, serverAuth
EOM
if [[ -n ${SSL_TRUSTED_IP} || -n ${SSL_TRUSTED_DOMAIN} || -n ${SSL_DOMAIN} ]]; then
cat >> ${SSL_CONFIG} <<EOM
subjectAltName = @alt_names
[alt_names]
EOM
IFS=","
dns=(${SSL_TRUSTED_DOMAIN})
dns+=(${SSL_DOMAIN})
for i in "${!dns[@]}"; do
echo DNS.$((i+1)) = ${dns[$i]} >> ${SSL_CONFIG}
done
if [[ -n ${SSL_TRUSTED_IP} ]]; then
ip=(${SSL_TRUSTED_IP})
for i in "${!ip[@]}"; do
echo IP.$((i+1)) = ${ip[$i]} >> ${SSL_CONFIG}
done
fi
fi
echo -e "\033[32m ====> 4. 生成服务 SSL KEY ${SSL_KEY} \033[0m"
openssl genrsa -out ${SSL_KEY} ${SSL_SIZE}
echo -e "\033[32m ====> 5. 生成服务 SSL CSR ${SSL_CSR} \033[0m"
openssl req -sha256 -new -key ${SSL_KEY} -out ${SSL_CSR} -subj "/C=${CN}/CN=${SSL_DOMAIN}" -config ${SSL_CONFIG}
echo -e "\033[32m ====> 6. 生成服务 SSL CERT ${SSL_CERT} \033[0m"
openssl x509 -sha256 -req -in ${SSL_CSR} -CA ${CA_CERT} \
-CAkey ${CA_KEY} -CAcreateserial -out ${SSL_CERT} \
-days ${SSL_DATE} -extensions v3_req \
-extfile ${SSL_CONFIG}
echo -e "\033[32m ====> 7. 证书制作完成 \033[0m"
echo
echo -e "\033[32m ====> 8. 以 YAML 格式输出结果 \033[0m"
echo "----------------------------------------------------------"
echo "ca_key: |"
cat $CA_KEY | sed 's/^/ /'
echo
echo "ca_cert: |"
cat $CA_CERT | sed 's/^/ /'
echo
echo "ssl_key: |"
cat $SSL_KEY | sed 's/^/ /'
echo
echo "ssl_csr: |"
cat $SSL_CSR | sed 's/^/ /'
echo
echo "ssl_cert: |"
cat $SSL_CERT | sed 's/^/ /'
echo
echo -e "\033[32m ====> 9. 附加 CA 证书到 Cert 文件 \033[0m"
cat ${CA_CERT} >> ${SSL_CERT}
echo "ssl_cert: |"
cat $SSL_CERT | sed 's/^/ /'
echo
echo -e "\033[32m ====> 10. 重命名服务证书 \033[0m"
echo "cp ${SSL_DOMAIN}.key tls.key"
cp ${SSL_DOMAIN}.key tls.key
echo "cp ${SSL_DOMAIN}.crt tls.crt"
cp ${SSL_DOMAIN}.crt tls.crt

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$ ./create_self-signed-cert.sh --ssl-domain=test-rancher.com --ssl-size=2048 --ssl-date=3650

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$ kubectl create namespace cattle-system
#创建secret tls-rancher-ingress
$ kubectl -n cattle-system create secret tls tls-rancher-ingress --cert=./cert/tls.crt --key=./cert/tls.key
# 创建secret tls-ca
$ kubectl -n cattle-system create secret generic tls-ca --from-file=./cert/cacerts.pem

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# 安装rancher
$ helm install rancher rancher-stable/rancher \
--version=2.7.6 \
--namespace cattle-system \
--set hostname=test-rancher.com \
--set ingress.tls.source=secret \
--set privateCA=true

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$ kubectl get ingress -n cattle-system

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$ 172.18.1.58 test.rancher.com

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$ kubectl -n cattle-system exec $(kubectl -n cattle-system get pods -l app=rancher | grep '1/1' | head -1 | awk '{ print $1 }') -- reset-password

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kubectl get svc -n istio-system

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