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ssl-generater.sh
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ssl-generater.sh
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#!/bin/bash
SHELLDIR=$(cd $(dirname $0); pwd)
chmod +x cfssl*
cp -n $SHELLDIR/cfssl_linux-amd64 /usr/local/bin/cfssl
cp -n $SHELLDIR/cfssljson_linux-amd64 /usr/local/bin/cfssljson
cp -n $SHELLDIR/cfssl-certinfo_linux-amd64 /usr/local/bin/cfssl-certinfo
#创建目录
KUBERNETES_HOME=/usr/local/kubernetes
mkdir -p $KUBERNETES_HOME/{bin,cfg,logs,ssl/etcd}
#hosts拼接函数
join_array(){
if [ "$1" != "" ]; then
ip_array=(${1//,/ })
result="\"${ip_array[0]}\""
for((i=1;i<=$((${#ip_array[*]}-1));i++));
do
result="$result,\"${ip_array[i]}\""
done
echo $result
fi
}
#生成etcd证书
generate_etcd_ssl(){
mkdir -p $SHELLDIR/{ssl/etcd,config/etcd}
if [ "`ls -A $SHELLDIR/ssl/etcd`" = "" ];then
cat >$SHELLDIR/config/etcd/ca-etcd-config.json <<EOF
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"etcd": {
"expiry": "87600h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
EOF
cat >$SHELLDIR/config/etcd/ca-etcd-csr.json << EOF
{
"CN": "etcd CA",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "SiChuan",
"ST": "ChengDu",
"O": "developer",
"OU": "java"
}
]
}
EOF
read -p "set etcd server ips or hostnames (设置etcd集群授权访问主机IP地址或hostname,多个用英文逗号分割)[defalut 127.0.0.1]:" etcd_server_ip
echo "etcd servers ip or hostnames:[${etcd_server_ip:=127.0.0.1}]"
fixed_etcd_server_ip=`join_array $etcd_server_ip`
if [ "$fixed_etcd_server_ip" != "" ]; then
fixed_etcd_server_ip=${fixed_etcd_server_ip}',"127.0.0.1","kubernetes","kubernetes.default","kubernetes.default.svc","kubernetes.default.svc.cluster","kubernetes.default.svc.cluster.local"'
else
fixed_etcd_server_ip='"127.0.0.1","kubernetes","kubernetes.default","kubernetes.default.svc","kubernetes.default.svc.cluster","kubernetes.default.svc.cluster.local"'
fi
cat >$SHELLDIR/config/etcd/server-etcd-csr.json << EOF
{
"CN": "etcd",
"hosts": [$fixed_etcd_server_ip],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "SiChuan",
"ST": "ChengDu",
"O": "developer",
"OU": "java"
}
]
}
EOF
#生成etcd ca证书和私钥 初始化ca
cfssl gencert -initca $SHELLDIR/config/etcd/ca-etcd-csr.json | cfssljson -bare $SHELLDIR/ssl/etcd/ca-etcd
#生成server证书
cfssl gencert -ca=$SHELLDIR/ssl/etcd/ca-etcd.pem -ca-key=$SHELLDIR/ssl/etcd/ca-etcd-key.pem -config=$SHELLDIR/config/etcd/ca-etcd-config.json -profile=etcd $SHELLDIR/config/etcd/server-etcd-csr.json | cfssljson -bare $SHELLDIR/ssl/etcd/server-etcd
fi
\cp -rf $SHELLDIR/ssl/etcd/* $KUBERNETES_HOME/ssl/etcd/
}
generate_etcd_ssl
#生成kubenetes证书
generate_k8s_ssl(){
mkdir -p $SHELLDIR/{ssl/k8s,config/k8s}
if [ "`ls -A $SHELLDIR/ssl/k8s`" = "" ];then
cat >$SHELLDIR/config/k8s/ca-k8s-config.json << EOF
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"kubernetes": {
"expiry": "87600h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
EOF
cat >$SHELLDIR/config/k8s/ca-k8s-csr.json << EOF
{
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "SiChuan",
"ST": "ChengDu",
"O": "k8s",
"OU": "System"
}
]
}
EOF
read -p "set k8s cluster ips or hostnames (设置k8s集群授权访问主机IP地址或hostname,多个用英文逗号分割)[defalut 127.0.0.1]:" k8s_server_ip
echo "k8s cluster ips or hostnames:[${k8s_server_ip:=127.0.0.1}]"
fixed_k8s_server_ip=`join_array $k8s_server_ip`
if [ "$fixed_k8s_server_ip" != "" ]; then
fixed_k8s_server_ip=${fixed_k8s_server_ip}',"127.0.0.1","10.253.0.1","kubernetes","kubernetes.default","kubernetes.default.svc","kubernetes.default.svc.cluster","kubernetes.default.svc.cluster.local"'
else
fixed_k8s_server_ip='"127.0.0.1","10.253.0.1","kubernetes","kubernetes.default","kubernetes.default.svc","kubernetes.default.svc.cluster","kubernetes.default.svc.cluster.local"'
fi
#apiserver证书
cat >$SHELLDIR/config/k8s/server-k8s-csr.json << EOF
{
"CN": "kubernetes",
"hosts": [$fixed_k8s_server_ip],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "SiChuan",
"ST": "ChengDu",
"O": "k8s",
"OU": "System"
}
]
}
EOF
#kube-proxy证书
cat >$SHELLDIR/config/k8s/kube-proxy-csr.json << EOF
{
"CN": "system:kube-proxy",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "SiChuan",
"ST": "ChengDu",
"O": "system:kube-proxy",
"OU": "System"
}
]
}
EOF
#kube-controller-manager证书
cat >$SHELLDIR/config/k8s/kube-controller-manager-csr.json << EOF
{
"CN": "system:kube-controller-manager",
"hosts": [$fixed_k8s_server_ip],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "SiChuan",
"ST": "ChengDu",
"O": "system:kube-controller-manager",
"OU": "System"
}
]
}
EOF
#kube-scheduler证书
cat >$SHELLDIR/config/k8s/kube-scheduler-csr.json << EOF
{
"CN": "system:kube-scheduler",
"hosts": [$fixed_k8s_server_ip],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "SiChuan",
"ST": "ChengDu",
"O": "system:kube-scheduler",
"OU": "System"
}
]
}
EOF
#admin kubectl证书
cat >$SHELLDIR/config/k8s/admin-k8s-csr.json << EOF
{
"CN": "admin",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "SiChuan",
"ST": "ChengDu",
"O": "system:master",
"OU": "System"
}
]
}
EOF
cfssl gencert -initca $SHELLDIR/config/k8s/ca-k8s-csr.json | cfssljson -bare $SHELLDIR/ssl/k8s/ca-k8s
cfssl gencert -ca=$SHELLDIR/ssl/k8s/ca-k8s.pem -ca-key=$SHELLDIR/ssl/k8s/ca-k8s-key.pem -config=$SHELLDIR/config/k8s/ca-k8s-config.json -profile=kubernetes $SHELLDIR/config/k8s/server-k8s-csr.json | cfssljson -bare $SHELLDIR/ssl/k8s/server-k8s
cfssl gencert -ca=$SHELLDIR/ssl/k8s/ca-k8s.pem -ca-key=$SHELLDIR/ssl/k8s/ca-k8s-key.pem -config=$SHELLDIR/config/k8s/ca-k8s-config.json -profile=kubernetes $SHELLDIR/config/k8s/kube-proxy-csr.json | cfssljson -bare $SHELLDIR/ssl/k8s/kube-proxy
cfssl gencert -ca=$SHELLDIR/ssl/k8s/ca-k8s.pem -ca-key=$SHELLDIR/ssl/k8s/ca-k8s-key.pem -config=$SHELLDIR/config/k8s/ca-k8s-config.json -profile=kubernetes $SHELLDIR/config/k8s/kube-controller-manager-csr.json | cfssljson -bare $SHELLDIR/ssl/k8s/kube-controller-manager
cfssl gencert -ca=$SHELLDIR/ssl/k8s/ca-k8s.pem -ca-key=$SHELLDIR/ssl/k8s/ca-k8s-key.pem -config=$SHELLDIR/config/k8s/ca-k8s-config.json -profile=kubernetes $SHELLDIR/config/k8s/kube-scheduler-csr.json | cfssljson -bare $SHELLDIR/ssl/k8s/kube-scheduler
cfssl gencert -ca=$SHELLDIR/ssl/k8s/ca-k8s.pem -ca-key=$SHELLDIR/ssl/k8s/ca-k8s-key.pem -config=$SHELLDIR/config/k8s/ca-k8s-config.json -profile=kubernetes $SHELLDIR/config/k8s/admin-k8s-csr.json | cfssljson -bare $SHELLDIR/ssl/k8s/admin-k8s
fi
\cp -rf $SHELLDIR/ssl/k8s/* $KUBERNETES_HOME/ssl/
}
generate_k8s_ssl
generate_k8s_token(){
if [ ! -f "$SHELLDIR/token.csv" ];then
token_uuid=`head -c 16 /dev/urandom | od -An -t x | tr -d ' '`
echo "$token_uuid,kubelet-bootstrap,10001,\"system:kubelet-bootstrap\"" >$SHELLDIR/token.csv
fi
\cp -rf $SHELLDIR/token.csv $KUBERNETES_HOME/cfg/
}
generate_k8s_token