Kubernetes多master部署（2）---证书制作

 在master01(10.50.182.65)操作：

#安装证书生成工具cfssl      

mkdir -p  /opt/ssl

cd /opt/ssl
wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 
wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64
chmod +x *
mv cfssl_linux-amd64 /usr/local/bin/cfssl
mv cfssljson_linux-amd64 /usr/local/bin/cfssljson
mv cfssl-certinfo_linux-amd64 /usr/bin/cfssl-certinfo

证书脚本 certificate.sh：

　　其中hosts地址要根据实际使用地址进行调整，内网网段也要加进去，其余不用动。

#证书根机构
cat > ca-config.json <<EOF
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"kubernetes": {
"expiry": "87600h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
EOF

#生成根证书的具体信息
cat > ca-csr.json <<EOF
{
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "hangzhou",
"ST": "hangzhou",
"O": "k8s",
"OU": "System"
}
]
}
EOF

#用cfssl生成证书

cfssl gencert -initca ca-csr.json | cfssljson -bare ca -

#-----------------------

#用于api http通信的证书信息
cat > server-csr.json <<EOF
{
"CN": "kubernetes",
"hosts": [
"127.0.0.1",
"10.50.182.65",
"10.50.182.66",
"10.50.182.67",
"10.50.182.69",
"10.10.10.1",
"kubernetes",
"kubernetes.default",
"kubernetes.default.svc",
"kubernetes.default.svc.cluster",
"kubernetes.default.svc.cluster.local"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "k8s",
"OU": "System"
}
]
}
EOF

#生成server证书
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes server-csr.json | cfssljson -bare server

#-----------------------

#集群管理员证书，权限
cat > admin-csr.json <<EOF
{
"CN": "admin",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "system:masters",
"OU": "System"
}
]
}
EOF

#生成管理员证书
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes admin-csr.json | cfssljson -bare admin

#-----------------------

#关于网络策略的证书
cat > kube-proxy-csr.json <<EOF
{
"CN": "system:kube-proxy",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "k8s",
"OU": "System"
}
]
}
EOF

#生成网络策略证书
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy

cp server* ca* /opt/kubernetes/ssl/

标签：bin,amd64,Kubernetes,证书,json,cfssl,master,linux,csr
来源： https://www.cnblogs.com/litzhiai/p/10813877.html