错误499：Varnish正在如何负载均衡Nginx Web服务器

我创build了一个解决scheme来托pipeAWS上具有高stream量（> 500个用户）的magento商店。 在access.log中出现HTTP 499错误通常是Varnish。 发生这种情况时，有这种访问权限的用户将面临503。

我不知道什么可能会导致错误499，但我明白它的意义。 我改变了几个参数，但没有成功。 任何想法？

我的/etc/varnish/default.vcl：

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• 在添加第二个后端之后，清漆VCL重新加载失败

backend webserver01 { .host = "172.31.30.167"; .port = "80"; .connect_timeout = 10s; .first_byte_timeout = 90s; # .probe = { # .url = "/heartbeat/index.php"; # .timeout = 30 s; # .interval = 15 s; # .window = 6; # .threshold = 3; # } } backend webserver02 { .host = "172.31.24.128"; .port = "80"; .connect_timeout = 10s; .first_byte_timeout = 90s; # .probe = { # .url = "/heartbeat/index.php"; # .timeout = 30 s; # .interval = 15 s; # .window = 6; # .threshold = 3; # } } director webnodes round-robin { { .backend = webserver01; } { .backend = webserver02; } } # add your Magento server IP to allow purges from the backend acl purge { "<ips-server-not-display-for-safety>"; "<ips-server-not-display-for-safety>"; "127.0.0.1"; "172.31.30.167"; "172.31.16.231"; "172.31.17.47"; "<ips-server-not-display-for-safety>"; "172.31.16.140"; } sub vcl_recv { if (req.http.host ~ "^(www.)?kaisan.com.br$") { set req.backend = webnodes; } if (req.restarts == 0) { if (req.http.x-forwarded-for) { set req.http.X-Forwarded-For = req.http.X-Forwarded-For + ", " + client.ip; } else { set req.http.X-Forwarded-For = client.ip; } } if (req.request != "GET" && req.request != "HEAD" && req.request != "PUT" && req.request != "POST" && req.request != "TRACE" && req.request != "OPTIONS" && req.request != "DELETE" && req.request != "PURGE") { /* Non-RFC2616 or CONNECT which is weird. */ return (pipe); } # purge request if (req.request == "PURGE") { if (!client.ip ~ purge) { error 405 "Not allowed."; } ban("obj.http.X-Purge-Host ~ " + req.http.X-Purge-Host + " && obj.http.X-Purge-URL ~ " + req.http.X-Purge-Regex + " && obj.http.Content-Type ~ " + req.http.X-Purge-Content-Type); error 200 "Purged."; } # switch to admin backend configuration # if (req.http.cookie ~ "adminhtml=") { # set req.backend = admin; # } # we only deal with GET and HEAD by default if (req.request != "GET" && req.request != "HEAD") { return (pass); } # normalize url in case of leading HTTP scheme and domain set req.url = regsub(req.url, "^http[s]?://[^/]+", ""); # static files are always cacheable. remove SSL flag and cookie if (req.url ~ "^/(media|js|skin)/.*\.(png|jpg|jpeg|gif|css|js|swf|ico)$") { unset req.http.Https; unset req.http.Cookie; } # not cacheable by default if (req.http.Authorization || req.http.Https) { return (pass); } # do not cache any page from # - index files # - ... if (req.url ~ "^/(index)") { return (pass); } # as soon as we have a NO_CACHE cookie pass request if (req.http.cookie ~ "NO_CACHE=") { return (pass); } # normalize Aceept-Encoding header # http://varnish.projects.linpro.no/wiki/FAQ/Compression if (req.http.Accept-Encoding) { if (req.url ~ "\.(jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|swf|flv)$") { # No point in compressing these remove req.http.Accept-Encoding; } elsif (req.http.Accept-Encoding ~ "gzip") { set req.http.Accept-Encoding = "gzip"; } elsif (req.http.Accept-Encoding ~ "deflate" && req.http.user-agent !~ "MSIE") { set req.http.Accept-Encoding = "deflate"; } else { # unkown algorithm remove req.http.Accept-Encoding; } } # remove Google gclid parameters set req.url = regsuball(req.url,"\?gclid=[^&]+$",""); # strips when QS = "?gclid=AAA" set req.url = regsuball(req.url,"\?gclid=[^&]+&","?"); # strips when QS = "?gclid=AAA&foo=bar" set req.url = regsuball(req.url,"&gclid=[^&]+",""); # strips when QS = "?foo=bar&gclid=AAA" or QS = "?foo=bar&gclid=AAA&bar=baz" return (lookup); } sub vcl_hash { hash_data(req.url); if (req.http.host) { hash_data(req.http.host); } else { hash_data(server.ip); } if (!(req.url ~ "^/(media|js|skin)/.*\.(png|jpg|jpeg|gif|css|js|swf|ico)$")) { call design_exception; } return (hash); } sub vcl_fetch { if (beresp.status == 503 || beresp.status == 502 || beresp.status == 501 || beresp.status == 500) { set beresp.saintmode = 8s; return (restart); } if (beresp.status == 404) { set beresp.ttl = 20s; } set beresp.grace = 5m; # add ban-lurker tags to object set beresp.http.X-Purge-URL = req.url; set beresp.http.X-Purge-Host = req.http.host; if (beresp.status == 200 || beresp.status == 301 || beresp.status == 404) { if (beresp.http.Content-Type ~ "text/html" || beresp.http.Content-Type ~ "text/xml") { if ((beresp.http.Set-Cookie ~ "NO_CACHE=") || (beresp.ttl < 1s)) { set beresp.ttl = 0s; return (hit_for_pass); } # marker for vcl_deliver to reset Age: set beresp.http.magicmarker = "1"; # Don't cache cookies unset beresp.http.set-cookie; } else { # set default TTL value for static content set beresp.ttl = 4h; } return (deliver); } return (hit_for_pass); } sub vcl_deliver { # debug info if (resp.http.X-Cache-Debug) { if (obj.hits > 0) { set resp.http.X-Cache = "HIT"; set resp.http.X-Cache-Hits = obj.hits; } else { set resp.http.X-Cache = "MISS"; } set resp.http.X-Cache-Expires = resp.http.Expires; } else { # remove Varnish/proxy header remove resp.http.X-Varnish; remove resp.http.Via; remove resp.http.Age; remove resp.http.X-Purge-URL; remove resp.http.X-Purge-Host; } if (resp.http.magicmarker) { # Remove the magic marker unset resp.http.magicmarker; set resp.http.Cache-Control = "no-store, no-cache, must-revalidate, post-check=0, pre-check=0"; set resp.http.Pragma = "no-cache"; set resp.http.Expires = "Mon, 31 Mar 2008 10:00:00 GMT"; set resp.http.Age = "0"; } } sub design_exception { }