Hello
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Rancher standard architecture
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three rancher server
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Nginx as a ssl proxy forward traffic to rancher server. rancher server ssl cert is generated with this nginx,the ssl generate script as following:
vi auto_ssl.sh
#######################################以下为文件内容############################################################
#!/bin/bash -e
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-date: ssl有效期,默认10年;'
echo ' --ca-date: ca有效期,默认10年;'
echo ' --ssl-cn: 国家代码(2个字母的代号),默认CN;'
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=$value ;;
esac
done
# CA相关配置
CA_DATE=${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=$SSL_DOMAIN.crt
echo -e "\033[32m ---------------------------- \033[0m"
echo -e "\033[32m | 生成 SSL Cert | \033[0m"
echo -e "\033[32m ---------------------------- \033[0m"
if [[ -e ./${CA_KEY} ]]; then
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
openssl genrsa -out ${CA_KEY} ${SSL_SIZE}
else
echo -e "\033[32m ====> 1. 生成新的CA私钥 ${CA_KEY} \033[0m"
openssl genrsa -out ${CA_KEY} ${SSL_SIZE}
fi
if [[ -e ./${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
openssl req -x509 -sha256 -new -nodes -key ${CA_KEY} -days ${CA_DATE} -out ${CA_CERT} -subj "/C=${CN}/CN=${CA_DOMAIN}"
else
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
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} ]]; 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
This script will generate the below files:
tls.key is cert key file,tls.crt is the rancher server cert, and the caserts.pem is the privateca.
rancher ui access normal when use nginx as ssl proxy, and nginx configuration as following:
# cat /root/nginx/nginx.conf
worker_processes 4;
worker_rlimit_nofile 40000;
events {
worker_connections 8192;
}
http {
upstream rancher {
ip_hash;
server 192.168.1.12:30080;
server 192.168.1.13:30080;
server 192.168.1.14:30080;
}
map $http_upgrade $connection_upgrade {
default Upgrade;
'' close;
}
server {
listen 443 ssl ;
server_name rancher.xxxx.com;
ssl_certificate /etc/nginx/ssl/tls.crt;
ssl_certificate_key /etc/nginx/ssl/tls.key;
proxy_read_timeout 86400;
proxy_connect_timeout 86400;
proxy_send_timeout 86400;
location / {
proxy_set_header Host $host;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Port $server_port;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://rancher;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
# This allows the ability for the execute shell window to remain open for up to 15 minutes.
## Without this parameter, the default is 1 minute and will automatically close.
proxy_read_timeout 900s;
proxy_buffering off;
}
}
server {
listen 80;
server_name rancher.xxxx.com;
return 301 https://$server_name$request_uri;
}
}
I want to migrate ssl proxy to load balance device,such as: radware alteon,but i can not access the rancher ui, rancher ui like this:
I just import the tls.key and tls.crt(this file include cacerts.pem) file to radware alteon,and then configure the ssl proxy on alteon, Unfortunately,i can not access rancher ui.
Has anyone done a case of replacing nginx with others load balancing(such as: f5 or radware or A10)?