proxy_next_upstream配置对使用balancer_by_lua_block后的集群无效

[onlonely]

如下配置,当访问http://127.0.0.1:8800/test2时出现404
`
proxy_next_upstream error timeout invalid_header http_504 http_404;#什么样的错误分发自动重试
proxy_http_version 1.1;
proxy_set_header Connection "";

server {access_log logs/access.log;server_name up_1;listen 8801;
location /test1 {content_by_lua 'ngx.say(ngx.var.server_port,":",ngx.var.uri)';}
}
server {access_log logs/access.log;server_name up_2;listen 8802;
location /test2 {content_by_lua 'ngx.say(ngx.var.server_port,":",ngx.var.uri)';}
}
server {server_name up_0;listen 8800;
location =/favicon.ico { return 200;}
location / {
proxy_pass http://up_test;
log_by_lua '
ngx.log(ngx.ERR,"\nuri=",ngx.var.uri,"upstream_addr:",ngx.var.upstream_addr,"upstream_status:",ngx.var.upstream_status)
';
}
}
upstream up_test {
server 0.0.0.1; # just an invalid address as a place holder
balancer_by_lua_block {
local balancer = require "ngx.balancer"
local upservers={3,
{"127.0.0.1",8801},
{"127.0.0.1",8802},
{"127.0.0.1",8803}
}
local state_name, status_code = balancer.get_last_failure()
ngx.log(ngx.ERR,"\nstate_name:",state_name, "status_code:",status_code)

local ibf=require "randombuff"
local index=ibf.index()--每次递增+1,模拟轮询负载均衡策略
index=math.mod(index,upservers[1])+2
local ok, err = balancer.set_current_peer(upservers[index][1], upservers[index][2])
ngx.log(ngx.ERR,"n\uri:",ngx.var.uri,"index;",index,"ok:",ok, err)
if not ok then
    ngx.log(ngx.ERR, "failed to set the current peer: ", err)
    return ngx.exit(500)
end          
}
keepalive 10;  # connection pool

}`
如果是如下集群配置则不会404
upstream up_test2 {
server 127.0.0.1:8801;
server 127.0.0.1:8802;
server 127.0.0.1:8803;
keepalive 10;
}
请问是BUG还是我写法不对呢

[agentzh]

@onlonely First of all, please do not use Chinese here. This place is considered English ONLY.

Regarding your problem, you should call the set_more_tries lua method explicitly:

https://github.com/openresty/lua-resty-core/blob/master/lib/ngx/balancer.md#set_more_tries