nginx子域名共享cookie

Question

假设有两个域名：a.com.cn；b.a.com.cn；两个域名如何共享cookie？

server {
    listen       80;
    server_name  a.com.cn;
    location / {
        proxy_pass http://ip1:port1;
    }
}

server {
    listen       80;
    server_name  b.a.com.cn;
    location / {
        proxy_pass http://ip2:port2;
    }
}

Answer 1

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