nginx still use the down peer

[ensonz]

I use ngx.upstream.get_primary_peers and find a peer is down。But nginx still use the bad peer。

log： 2018/10/12 16:14:36 [debug] 1998#1998: *508497 [lua] test.lua:21: gen_peers_status_info(): name:123.157.76.2:80stat: up

2018/10/12 16:14:36 [debug] 1998#1998: *508497 [lua] test.lua:21: gen_peers_status_info(): name:123.157.76.5:80stat: DOWN

2018/10/12 16:14:36 [debug] 1998#1998: *508497 [lua] test.lua:21: gen_peers_status_info(): name:60.217.244.95:80stat: up

2018/10/12 16:14:36 [debug] 1998#1998: *508497 http cleanup add: 0000000003439608 2018/10/12 16:14:36 [debug] 1998#1998: *508497 http script var: "/a64/0/ads11euyc1dsa0pb.dsaudio" 2018/10/12 16:14:36 [debug] 1998#1998: *508497 consistent hash [peer name]:123.157.76.5:80 4170160978 2018/10/12 16:14:36 [debug] 1998#1998: *508497 stream socket 18

lua file: local u = "test.domain.com" local ok, upstream = pcall(require, "ngx.upstream") if not ok then error("ngx_upstream_lua module required") end local set_peer_down = upstream.set_peer_down local get_primary_peers = upstream.get_primary_peers local get_backup_peers = upstream.get_backup_peers local get_upstreams = upstream.get_upstreams

local function gen_peers_status_info(peers) local npeers = #peers for i = 1, npeers do local peer = peers[i] local stat = "" if peer.down then stat = " DOWN\n" else stat = " up\n" end ngx.log(ngx.DEBUG,"name:",peer.name,"stat:",stat) end return idx end

local peers, err = get_primary_peers(u) if not peers then return "failed to get primary peers in upstream " .. u .. ": " .. err end gen_peers_status_info(peers) peers, err = get_backup_peers(u) if not peers then return "failed to get backup peers in upstream " .. u .. ": " .. err end gen_peers_status_info(peers)

upstream config ： upstream test.domain.com { consistent_hash $uri; #server 123.157.76.2:80 id=1001 weight=1 max_fails=2 fail_timeout=30s; #server 123.157.76.5:80 id=1002 weight=1 max_fails=2 fail_timeout=30s; server 123.157.76.2:80; server 123.157.76.5:80;

    server 60.217.244.95:80 backup;
}