varnish

How to inject environment variables in Varnish configuration

由 眉间皱痕 提交于 2021-02-08 13:32:05
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

Varnish ban is added but old object is returned

由 可紊 提交于 2021-02-08 06:32:49
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

Varnish: Purge says it works but doesn't remove old content

由 元气小坏坏 提交于 2021-02-07 18:32:23
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

Varnish: Purge says it works but doesn't remove old content

由 六月ゝ 毕业季﹏ 提交于 2021-02-07 18:32:13
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

regex issue sending BAN request to Varnish server via curl

由 心已入冬 提交于 2021-01-27 13:25:21
问题 I have been trying to send a BAN request via curl to the Varnish server to invalid cached content. The url contains some regex for Varnish to check against. I have been successfully sending this request: 1. curl -X BAN "https://oursite.com/product/item/(100|7|9||8|7|6|5|4|2|1)" <!DOCTYPE html> <html> <head> <title>200 Ban added</title> </head> <body> <h1>Error 200 Ban added</h1> <p>Ban added</p> <h3>Guru Meditation:</h3> <p>XID: 66211</p> <hr> <p>Varnish cache server</p> </body> </html> but

Inline C Varnish (VCL_deliver)

由 删除回忆录丶 提交于 2021-01-24 07:31:47
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

Inline C Varnish (VCL_deliver)

由 冷暖自知 提交于 2021-01-24 07:30:30
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

开发运维视角下，影响软件高可扩展性的6个因素

由 落花浮王杯 提交于 2021-01-08 11:41:52
<section id="nice" data-tool="mdnice编辑器" data-website="https://www.mdnice.com" style="font-size: 16px; color: black; padding: 0 10px; line-height: 1.6; word-spacing: 0px; letter-spacing: 0px; word-break: break-word; word-wrap: break-word; text-align: left; font-family: Optima-Regular, Optima, PingFangSC-light, PingFangTC-light, 'PingFang SC', Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;"><p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: black;">软件可扩展性是一个有趣的话题。实现软件可扩展性涉及很多因素，我们在本文将讨论一些与开发和运维方面相关的因素。</p> <p

用varnish做缓存服务器

由 ♀尐吖头ヾ 提交于 2021-01-01 05:42:35
一、目的 通过配置Varnish缓存服务器，实现如下目标： 使用Varnish加速后端Apache Web服务 使用varnishadm命令管理缓存页面 使用varnishstat命令查看Varnish状态 二、方案， 服务器规划见我的另外一篇笔记：squid反向代理，通过源码编译安装Varnish缓存服务器 三、实施：主要是部署varnish缓存服务器 1、安装软件依赖包 yum -y install gcc readline-devel pcre-devel 2、创建程序的启动账户：useradd -s /sbin/nologin varnish 3、编译安装软件 tar -xf varnish-3.0.6.tar.gz //解压源码包 cd varnish-3.0.6/ //进入到解压的目录 ./configure --prefix=/varnish //配置，指定安装路径为/varnish make && make install //编译安装 4、复制启动脚本及配置文件 cp redhat/varnish.initrc /etc/init.d/varnish cp redhat/varnish.sysconfig /etc/sysconfig/varnish cp redhat/varnish_reload_vcl /usr/bin/ ln -s /usr/local

varnish缓存服务器构建疑问

由 僤鯓⒐⒋嵵緔 提交于 2021-01-01 01:40:10
标题索引 追朔原因 实验分解 抓包分析 追朔原因【此文需要待续】 当下是互联网时代也是CDN缓存时代，缓存可以提供互联网80%流量，因此缓存的构建和提高缓存的命中率是互联网行业必不可少的方式和手段，另外在http1.1协议盛行的时代，需非常了解http协议才能对apache、nginx、haproxy等服务器原理了解更为透彻，互联网CDN内容发布商缓存命中率才能大大提供，用户才能得到好的体验。 实验分解 当客户端浏览器cache-control：max-age=0时，表示缓存服务器通常需要将请求转发给源服务器（具体可参考图解http协议书籍89页）； 当客户端浏览器cache-control：max-age>0时，表示客户端可以从缓存服务器端直接获取数据。 vcl 4.0; #------------------------------------------------------- #装载负载均衡模块 import directors; import std; #------------------------------------------------------- #在全局配置中配置acl，在recv函数中调用acl acl aclpurges { "192.168.40.2"/24; "127.0.0.1"/24; } #-----------------------
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