Varnish 网站动静分离定义后端主机列表：
vim /etc/varnish/default.vcl
# Default backend definition. Set this to point toyour content server.
backend websrv1 {
.host ="192.168.2.223";
.port ="80";
.probe = {
.url ="/index.htm";
}
}
backend websrv2 {
.host ="192.168.2.224";
.port ="80";
.probe = {
.url ="/index.htm";
}
}
sub vcl_recv { #通过正则表达式进行读写分离
if (req.url~ "(?!)\.(jpg|png|gif|css|htm)$"){ #jpg等图片去访问websrv2,其它去访问websrv1
setreq.backend_hint = websrv2;
} else {
setreq.backend_hint = websrv1;
}
}
动态加载vcl文件：
[root@node230 ~]# varnishadm -S /etc/varnish/secret -T192.168.2.230:6082
vcl.list
200
active 0boot
vcl.load test1 test.vcl
200
VCL compiled.
vcl.use test1
200
VCL 'test1' now active
vcl.list
200
available 0boot
active 0test1
backend.list
200
Backend name Refs Admin Probe
default(192.168.2.223,,80) 1 probe Healthy (no probe)
websrv1(192.168.2.223,,80) 1 probe Healthy 5/8
websrv2(192.168.2.224,,80) 1 probe Healthy 5/8
通过浏览器查看动静分离效果
http://192.168.2.230:6081
+++++++++++++++++++++++++++++++++++++++++++
基于Varnish VCL实现动静分离
如果用户请求的是图片那么则发给静态服务器，反之，如果是动态内容则发送给动态服务器
首先需要定义两个backend
backendimg_server1{
.host="10.0.10.63";
.port="8080";
}
backendapp_server1{
.host="10.0.10.62";
.port="8080";
}
sub vcl_recv {
if(req.url ~"index.html$") {
return(pass);
}
if(req.url ~ "\.php$") {
set req.backend = app_server1;
} else {
set req.backend = img_eserver1;
}
}
sub vcl_deliver {
setreq.http.X-Forward-For = client.ip;
if (obj.hits > 0){
set resp.http.X-Cache= "HITfrom"+" "+ server.ip;
} else {
setresp.http.XCahche ="MISS";
}
}
varnish>vcl.loadtest6 ./test.vcl
200
VCL compiled.
varnish>vcl.usetest6
200
