chash-nginx.conf

events {
    worker_connections  1024;
}

http {
    error_log /var/log/nginx/error.log info;
    access_log /var/log/nginx/access.log;

    lua_package_path '/usr/local/lib/lua/?.lua;;';
    lua_package_cpath '/usr/local/lib/lua/?.so;;';

    client_max_body_size           0;
    server {
        listen 81;

        location /ip-test {
             content_by_lua_block {
                 local resty_chash = require "resty.chash"
                 local servers={
                 }

              	 servers["10.244.1.10:80"]=25
              	 servers["10.244.1.11:80"]=25
              	 servers["10.244.1.12:80"]=25
              	 servers["10.244.1.13:80"]=25

                 local keys={
                    "10.244.0.17",
                    "10.244.0.16",
                    "10.244.0.20",
                    "10.244.0.14",
                    "10.244.0.19",
                    "10.244.0.24",
                    "10.244.0.21",
                    "10.244.0.28",
                    "10.244.0.25",
                    "10.244.0.3",
                    "10.244.0.23",
                    "10.244.0.27",
                    "10.244.0.2",
                    "10.244.0.22",
                    "10.244.0.29",
                    "10.244.0.26",
                    "10.244.0.7",
                    "10.244.0.15",
                    "10.244.0.13",
                    "10.244.0.61"
                 }

                 local counter={}
                 local chash = resty_chash:new(servers)
                 for i,key in ipairs(keys) do
                     local backend, idx = chash:find(key)
                     ngx.log(ngx.NOTICE,"key "..key.. " backend " ..backend.. "idx " ..idx)
                     if counter[backend] ==nil then
                        counter[backend]=1
                     else 
                       counter[backend]=counter[backend]+1
                     end
                 end

                 for b,c in pairs(counter) do
                      ngx.log(ngx.NOTICE," backend " ..b.. " count " ..c)
                 end

                 ngx.log(ngx.NOTICE," len " ..#keys)
                 ngx.say("ok")
             }
        }
    }
}