varnish-vcl

问题 I have 2 environments variables : echo $FRONT1_PORT_8080_TCP_ADDR # 172.17.1.80 echo $FRONT2_PORT_8081_TCP_ADDR # 172.17.1.77 I want to inject them in a my default.vcl like : backend front1 { .host = $FRONT1_PORT_8080_TCP_ADDR; } But I got an syntax error on the $ char. I've also tried with user variables but I can't define them outside vcl_recv . How can I retrieve my 2 values in the VCL ? 回答1: I've managed to parse my vcl backend front1 { .host = ${FRONT1_PORT_8080_TCP_ADDR}; } With a

问题 I'm using varnish in front of a tile server to cache mapbox tiles. To remove old tiles, I intended to use bans to effectively remove a large number of cached tiles. My problem is that varnish still uses the cached objects (at least the age in the response indicates this) and doesn't contact the backend. I'm first requesting http://varnish/5/3/4.pbf, then adding a ban with curl -X BAN -H 'X-Purge-Regex: 5/3/4.pbf' varnish or alternatively varnishadm and then ban obj.http.url ~ 5/3/4.pbf and

问题 I'm running a stand alone instance of varnish on a Digital Ocean Ubuntu VM which basically works fine. The setup is used to take load of an older wordpress server that sits anyhwere else. That works quite well but i'm having a hard time getting content purged. And when talking about purge i mean to invalidate the cache for a URL to force varnish to fetch a fresh version from the backend (just to make sure as i've seen some irritation about purge/ban). I have setup an ACL for purge and as far

问题 I'm running a stand alone instance of varnish on a Digital Ocean Ubuntu VM which basically works fine. The setup is used to take load of an older wordpress server that sits anyhwere else. That works quite well but i'm having a hard time getting content purged. And when talking about purge i mean to invalidate the cache for a URL to force varnish to fetch a fresh version from the backend (just to make sure as i've seen some irritation about purge/ban). I have setup an ACL for purge and as far

问题 I am using Varnish 4.0. My backend is adding to some responses an http header "x-count" I would like to log the value of "x-count" into a file with a line break. I assumed i should do it in VCL deliver. Here is what i have so far : sub vcl_deliver { if (resp.http.x-count-this:) { set resp.http.X-infodbg = "xx"; C{ FILE *fp; fp = fopen("/tmp/test.txt", "w+"); fputs(VRT_GetHdr(sp, HDR_OBJ, "\013x-count-this:"), fp); fputs("\n", fp); fclose(fp); }C } } Of course it doesnt work and there is a

问题 I am using Varnish 4.0. My backend is adding to some responses an http header "x-count" I would like to log the value of "x-count" into a file with a line break. I assumed i should do it in VCL deliver. Here is what i have so far : sub vcl_deliver { if (resp.http.x-count-this:) { set resp.http.X-infodbg = "xx"; C{ FILE *fp; fp = fopen("/tmp/test.txt", "w+"); fputs(VRT_GetHdr(sp, HDR_OBJ, "\013x-count-this:"), fp); fputs("\n", fp); fclose(fp); }C } } Of course it doesnt work and there is a

问题 I'm curious if there is a way rewrite a URL if response is a 404, in Varnish 2.1.5? For example. I'd like to pull up a URL, which may or may not exist. If the URL doesn't exist, I'd like to do a URL rewrite and try the new URL instead. I'm new to Varnish and don't completely understand the lifecycle of a request (if anyone knows a guy of article explaining this, please share). I've tried setting some variables and request headers, and checking res.status but they seem to get lost someplace in

问题 I have the following regular expression in Varnish configuration language ^/abc/([a-zA-Z0-9\-\ ]*)-([0-9]+) Now , I want fetch the value $2 part(i.e [0-9]+ ) of regular expression in Varnish. How can I get this value? 回答1: You may use regsub in this case: set req.url = regsub(req.url, "^/abc/([a-zA-Z0-9 -]*)-([0-9]+).*", "\2"); You match the whole string, capture the part you need, and replace with the appropriate backreference. 来源： https://stackoverflow.com/questions/44179243/extracting

问题 Good day. I need some help, I cant get any HIT/MISS response in varnish. please help me.. thanks in advance.. Here is my default.vcl configuration. backend default { .host = "00.00.00.00"; .port = "80"; } sub vcl_recv { if (req.http.host == "www.example.com") { unset req.http.cookie; unset req.http.Vary; } else { return (pass); } } sub vcl_backend_response { set beresp.do_gzip = true; unset beresp.http.Cache-Control; set beresp.ttl = 1h; set beresp.grace = 1w; } sub vcl_deliver { if (obj.hits

问题 I need some help. How can I do this in new version? since vcl_fetch is old and it is not accepeed now in Varnish 4. sub vcl_fetch{ if (beresp.http.set-cookie ~ "sessionid" || beresp.http.set-cookie ~ "csrftoken") { return (pass); } else { return (deliver); } } 回答1: Vcl_fetch has been moved to vcl_backend_response. That said it's not a good idea to return pass from vcl_backend_response. You should rewrite your return (pass) to set beresp.uncacheable = true; set beresp.ttl = 120s; return