清漆503错误/没有后端连接
问题描述:
我目前正在使用清漆为我的网站,以前它工作正常,没有问题,但今天我得到的是503错误时试图访问我的网站的任何部分,这是我从varnishlog回来。清漆503错误/没有后端连接
3 VCL_return c pass
3 FetchError c no backend connection
3 VCL_call c error
3 VCL_return c deliver
3 VCL_call c deliver
3 VCL_return c deliver
3 TxProtocol c HTTP/1.1
3 TxStatus c 503
3 TxResponse c Service Unavailable
3 TxHeader c Server: Varnish
3 TxHeader c Retry-After: 0
3 TxHeader c Content-Type: text/html; charset=utf-8
3 TxHeader c Content-Length: 418
3 TxHeader c Date: Sat, 05 Mar 2016 15:25:44 GMT
3 TxHeader c X-Varnish: 765008569
3 TxHeader c Age: 0
3 TxHeader c Via: 1.1 varnish
3 TxHeader c Connection: close
3 Length c 418
3 ReqEnd c 765008569 1457191544.916952610 1457191544.917085171 0.000094652 0.000080585 0.000051975
3 SessionClose c error
3 StatSess c 185.106.92.245 33848 0 1 1 0 1 0 234 418
这里是我的VCL
backend default {
.host = "127.0.0.1";
.port = "8080";
.connect_timeout = 1.5s;
.first_byte_timeout = 45s;
.between_bytes_timeout = 30s;
.probe = {
.url ="/";
.timeout = 34ms;
.interval = 1s;
.window = 10;
.threshold = 8;
}
}
sub vcl_recv
{
# Set Grace Time to one hour
set req.grace = 1h;
}
sub vcl_fetch
{
# Set the TTL for cache object to five minutes
set beresp.ttl = 5m;
# Set Grace Time to one hour
set beresp.grace = 1h;
}
我曾尝试任何解决方案,我可以找到没有一个是有好转的情况下,我的这方面的知识只是到目前为止配置。任何帮助,将不胜感激。
答
在你探头设置你有一个非常短超时34ms
.probe = {
.url ="/";
.timeout = 34ms;
.interval = 1s;
.window = 10;
.threshold = 8;
}
你确定你的站点载入迅速?如果没有,那么Varnish会将该后端主机标记为关闭,因此也会返回错误no backend connection
您可以发布“netstat -ntlp”执行吗? –