k8s-01一键生成k8s证书

下面直接写成脚本就行 放在/root/ssl下面直接执行就行
备注：此为master节点生成的证书都在/opt/kubernetes/ssl下面，如果node节点想用 直接scp过去
  192.168.56.10 为master
  192.168.56.11  node01
  192.168.56.12  node02
  hosts也可以只写master节点的ip地址
 
mkdir -p /opt/kubernetes/{cfg,bin,ssl}
mkdir -p  /root/ssl
yum -y install wget
cd /root/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 cfssl_linux-amd64 cfssljson_linux-amd64 cfssl-certinfo_linux-amd64 
\mv cfssl_linux-amd64 /opt/kubernetes/bin/cfssl
\mv cfssljson_linux-amd64 /opt/kubernetes/bin/cfssljson
\mv cfssl-certinfo_linux-amd64 /opt/kubernetes/bin/cfssl-certinfo
echo "PATH=\$PATH:/opt/kubernetes/bin"  >>/etc/profile
source /etc/profile
cfssl=/opt/kubernetes/bin/cfssl
cfssl-certinfo=/opt/kubernetes/bin/cfssl-certinfo
cfssljson=/opt/kubernetes/bin/cfssljson
cat > ca-config.json <<EOF
{
  "signing": {
    "default": {
      "expiry": "87600h"
    },
    "profiles": {
      "kubernetes": {
         "expiry": "87600h",
         "usages": [
            "signing",
            "key encipherment",
            "server auth",
            "client auth"
        ]
      }
    }
  }
}
EOF

cat > ca-csr.json <<EOF
{
    "CN": "kubernetes",
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names
5b4
": [
        {
            "C": "CN",
            "L": "Beijing",
            "ST": "Beijing",
      	    "O": "k8s",
            "OU": "System"
        }
    ]
}
EOF

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

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

cat > server-csr.json <<EOF
{
    "CN": "kubernetes",
    "hosts": [
      "127.0.0.1",
      "192.168.56.10",
      "192.168.56.11",
      "192.168.56.12",
      "10.10.10.1",
      "kubernetes",
      "kubernetes.default",
     &nbs
5b4
p;"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

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

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

cat > admin-csr.json <<
60dc
EOF
{
  "CN": "admin",
  "hosts": [],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "L": "BeiJing",
      "ST": "BeiJing",
      "O": "system:masters",
      "OU": "System"
    }
  ]
}
EOF

cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes admin-csr.json | cfssljson -bare admin

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

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

cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy

rm -f  /opt/kubernetes/ssl/*.pem
ls -l|grep pem|awk  '{print $9}'|xargs  -i mv {}  /opt/kubernetes/ssl/

[root@k8s-master ssl]# ll  /opt/kubernetes/ssl/

total 32

-rw------- 1 root root 1679 Oct  2 10:57 admin-key.pem

-rw-r--r-- 1 root root 1399 Oct  2 10:57 admin.pem

-rw------- 1 root root 1675 Oct  2 10:57 ca-key.pem

-rw-r--r-- 1 root root 1359 Oct  2 10:57 ca.pem

-rw------- 1 root root 1675 Oct  2 10:57 kube-proxy-key.pem

-rw-r--r-- 1 root root 1403 Oct  2 10:57 kube-proxy.pem

-rw------- 1 root root 1675 Oct  2 10:57 server-key.pem

-rw-r--r-- 1 root root 1627 Oct  2 10:57 server.pem

[root@k8s-master ssl]# 

[root@k8s-master ~]# ll /opt/kubernetes/bin/

total 18808

-rwxr-xr-x 1 root root 10376657 Mar 30  2016 cfssl

-rwxr-xr-x 1 root root  6595195 Mar 30  2016 cfssl-certinfo

-rwxr-xr-x 1 root root  2277873 Mar 30  2016 cfssljson

[root@k8s-master ~]#