sdkman install慢，采用squid代理

(1)A机器,IP:yy.yy.yy.yy 安装squid

yum install squidvi /etc/squid/squid.conf

acl allowed_ip src xx.xx.xx.xx
http_access allow allowed_ip
http_access deny all

systemctl restart squid

开放3128端口

(2)B机器，IP:xx.xx.xx.xx,
export http_proxy=http://yy.yy.yy.yy:3128
export https_proxy=http://yy.yy.yy.yy:3128

sdk install