求助：关于 varnish 配置的问题

2014-05-30 16:07:55 +08:00
 solar
varnish 已安装并正确运行。


我在web服务器的8383端口上部署了一个网站。现在要用varnish为它提供缓存服务。不知道怎么配置。查了很多资料，但是我始终没能在Headers里看到X-Varnish。varnish和web服务在同一台服务器上。

/etc/varnish/default.vcl
<pre>
# This is a basic VCL configuration file for varnish. See the vcl(7)
# man page for details on VCL syntax and semantics.
#
# Default backend definition. Set this to point to your content
# server.
#
import std;

probe healthchk {
.url = "/";
.interval = 3s;
.timeout = 10ms;
.window = 3;
.threshold = 2;
.initial = 3;
.expected_response = 200;
}

backend default {
.host = "xx.xx.xx.xx";
.port = "8383";
.probe = healthchk;
}

#acl purge {
# "localhost";
# "127.0.0.1";
# "xx.xx.xx.xx"/24;
#}

#
# Below is a commented-out copy of the default VCL logic. If you
# redefine any of these subroutines, the built-in logic will be
# appended to your code.
sub vcl_recv {
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") {
/* Non-RFC2616 or CONNECT which is weird. */
return (pipe);
}
if (req.request != "GET" && req.request != "HEAD") {
/* We only deal with GET and HEAD by default */
return (pass);
}
if (req.http.Authorization || req.http.Cookie) {
/* Not cacheable by default */
return (pass);
}
return (lookup);
}

sub vcl_pipe {
# Note that only the first request to the backend will have
# X-Forwarded-For set. If you use X-Forwarded-For and want to
# have it set for all requests, make sure to have:
# set bereq.http.connection = "close";
# here. It is not set by default as it might break some broken web
# applications, like IIS with NTLM authentication.
return (pipe);
}

sub vcl_pass {
return (pass);
}

sub vcl_hash {
hash_data(req.url);
if (req.http.host) {
hash_data(req.http.host);
} else {
hash_data(server.ip);
}
return (hash);
}

sub vcl_hit {
return (deliver);
}

sub vcl_miss {
return (fetch);
}

sub vcl_fetch {
if (beresp.ttl <= 0s ||
beresp.http.Set-Cookie ||
beresp.http.Vary == "*") {
/*
* Mark as "Hit-For-Pass" for the next 2 minutes
*/
set beresp.ttl = 120 s;
return (hit_for_pass);
}
return (deliver);
}

sub vcl_deliver {
return (deliver);
}

sub vcl_error {
set obj.http.Content-Type = "text/html; charset=utf-8";
set obj.http.Retry-After = "5";
synthetic {"
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title>"} + obj.status + " " + obj.response + {"</title>
</head>
<body>
<h1>Error "} + obj.status + " " + obj.response + {"</h1>
<p>"} + obj.response + {"</p>
<h3>Guru Meditation:</h3>
<p>XID: "} + req.xid + {"</p>
<hr>
<p>Varnish cache server</p>
</body>
</html>
"};
return (deliver);
}

sub vcl_init {
return (ok);
}

sub vcl_fini {
return (ok);
}
</pre>
----------------------------------------------------------------------------
/etc/sysconfig/varnish
<pre>
# Configuration file for varnish
#
# /etc/init.d/varnish expects the variable $DAEMON_OPTS to be set from this
# shell script fragment.
#

# Maximum number of open files (for ulimit -n)
NFILES=131072

# Locked shared memory (for ulimit -l)
# Default log size is 82MB + header
MEMLOCK=82000

# Maximum number of threads (for ulimit -u)
NPROCS="unlimited"

# Maximum size of corefile (for ulimit -c). Default in Fedora is 0
# DAEMON_COREFILE_LIMIT="unlimited"

# Set this to 1 to make init script reload try to switch vcl without restart.
# To make this work, you need to set the following variables
# explicit: VARNISH_VCL_CONF, VARNISH_ADMIN_LISTEN_ADDRESS,
# VARNISH_ADMIN_LISTEN_PORT, VARNISH_SECRET_FILE, or in short,
# use Alternative 3, Advanced configuration, below
RELOAD_VCL=1

# This file contains 4 alternatives, please use only one.

## Alternative 1, Minimal configuration, no VCL
#
# Listen on port 6081, administration on localhost:6082, and forward to
# content server on localhost:8080. Use a fixed-size cache file.
#
#DAEMON_OPTS="-a :6081 \
# -T localhost:6082 \
# -b localhost:8080 \
# -u varnish -g varnish \
# -s file,/var/lib/varnish/varnish_storage.bin,1G"


## Alternative 2, Configuration with VCL
#
# Listen on port 6081, administration on localhost:6082, and forward to
# one content server selected by the vcl file, based on the request. Use a
# fixed-size cache file.
#
#DAEMON_OPTS="-a :6081 \
# -T localhost:6082 \
# -f /etc/varnish/default.vcl \
# -u varnish -g varnish \
# -S /etc/varnish/secret \
# -s file,/var/lib/varnish/varnish_storage.bin,1G"


## Alternative 3, Advanced configuration
#
# See varnishd(1) for more information.
#
# # Main configuration file. You probably want to change it :)
VARNISH_VCL_CONF=/etc/varnish/default.vcl
#
# # Default address and port to bind to
# # Blank address means all IPv4 and IPv6 interfaces, otherwise specify
# # a host name, an IPv4 dotted quad, or an IPv6 address in brackets.
# VARNISH_LISTEN_ADDRESS=
VARNISH_LISTEN_PORT=80
#
# # Telnet admin interface listen address and port
VARNISH_ADMIN_LISTEN_ADDRESS=127.0.0.1
VARNISH_ADMIN_LISTEN_PORT=6082
#
# # Shared secret file for admin interface
VARNISH_SECRET_FILE=/etc/varnish/secret
#
# # The minimum number of worker threads to start
VARNISH_MIN_THREADS=50
#
# # The Maximum number of worker threads to start
VARNISH_MAX_THREADS=1000
#
# # Idle timeout for worker threads
VARNISH_THREAD_TIMEOUT=120
#
# # Cache file location
VARNISH_STORAGE_FILE=/var/lib/varnish/varnish_storage.bin
#
# # Cache file size: in bytes, optionally using k / M / G / T suffix,
# # or in percentage of available disk space using the % suffix.
VARNISH_STORAGE_SIZE=1G
#
# # Backend storage specification
VARNISH_STORAGE="file,${VARNISH_STORAGE_FILE},${VARNISH_STORAGE_SIZE}"
#
# # Default TTL used when the backend does not specify one
VARNISH_TTL=120
#
# # DAEMON_OPTS is used by the init script. If you add or remove options, make
# # sure you update this section, too.
DAEMON_OPTS="-a ${VARNISH_LISTEN_ADDRESS}:${VARNISH_LISTEN_PORT} \
-f ${VARNISH_VCL_CONF} \
-T ${VARNISH_ADMIN_LISTEN_ADDRESS}:${VARNISH_ADMIN_LISTEN_PORT} \
-t ${VARNISH_TTL} \
-w ${VARNISH_MIN_THREADS},${VARNISH_MAX_THREADS},${VARNISH_THREAD_TIMEOUT} \
-u varnish -g varnish \
-S ${VARNISH_SECRET_FILE} \
-s ${VARNISH_STORAGE}"
#


## Alternative 4, Do It Yourself. See varnishd(1) for more information.
#
# DAEMON_OPTS=""
</pre>
6152 次点击
所在节点    Varnish
5 条回复
rails3
2014-05-30 16:39:16 +08:00
我们这边是 nginx --> varnish --> nginx
你也可以 varnish --> nginx

varnish 3.x配置

backend default {
.host = "172.x.x.x";
.port = "8080";
}

sub vcl_recv {

if (req.request == "CACHEPURGE") {
ban("req.http.host == " + regsub(req.http.host, ":6081", "") + " && req.url == " + req.url);
error 200 "Ban added";
}

if (req.request == "CACHEPURGEDIRECTORY") {
ban("req.http.host == " + regsub(req.http.host, ":6081", "") + " && req.url ~ " + req.url);
error 200 "Ban added";
}

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;
}
}

set req.backend = default;

if (req.http.host == "xxxx.com") {
set req.http.host = "www.xxxx.com";
}

if (req.url ~ "\.(jsp|action)$") {
return (pass);
}

if (req.url ~ "(.*)/(\?.*)?$") {
set req.url = regsub(req.url, "(.*)/(\?.*)?$", "\1/");
}

if (req.url ~ "\.html?.*") {
set req.url = regsub(req.url, "\.html?.*", "\.html");
}

if (req.url ~ "/index.html$") {
set req.url = regsub(req.url, "/index.html", "/");
}

if (req.http.Accept-Encoding) {
if (req.url ~ "\.(jpg|jpeg|gif|png|ico|css|zip|tgz|gz|rar|bz2|pdf|txt|tar|wav|bmp|rtf|js|flv|swf|htm|html)$") {
remove req.http.Accept-Encoding;
unset req.http.Cookie;
unset req.http.Vary;
} elsif (req.http.Accept-Encoding ~ "gzip") {
set req.http.Accept-Encoding = "gzip";
} elsif (req.http.Accept-Encoding ~ "deflate") {
set req.http.Accept-Encoding = "deflate";
} else {
remove req.http.Accept-Encoding;
}
}


return (lookup);
}

sub vcl_pipe {
return (pipe);
}

sub vcl_pass {
return (pass);
}

sub vcl_hash {
hash_data(req.url);
if (req.http.host) {
hash_data(req.http.host);
} else {
hash_data(server.ip);
}
return (hash);
}

sub vcl_hit {
if (req.request == "xxx" || req.request == "xxx_directory") {
purge;
error 200 "Purged.";
}
return (deliver);
}

sub vcl_miss {
if (req.request == "xxx" || req.request == "xxx_directory") {
purge;
error 200 "Purged.";
}
return (fetch);
}

sub vcl_fetch {

if (req.http.host == "x.xxxx.com") {
unset beresp.http.set-cookie;
set beresp.ttl = 7d;
}

if (beresp.ttl <= 0s ||
beresp.http.Set-Cookie ||
beresp.http.Vary == "*") {
set beresp.ttl = 120 s;
return (hit_for_pass);
}

if (beresp.status == 404 || beresp.status == 503 || beresp.status == 500 || beresp.status == 502) {
set beresp.http.X-Cacheable = "NO: beresp.status";
set beresp.http.X-Cacheable-status = beresp.status;
return (hit_for_pass);
}

if (req.url ~ "\.(html|htm)$") {
set beresp.do_gzip = true;
if (req.url ~ "/list_") {
set beresp.ttl = 600s;
} else {
set beresp.ttl = 8h;
}
} else if (req.url ~ "\.(jpg|jpeg|gif|png|ico|css|zip|tgz|gz|rar|bz2|pdf|txt|tar|wav|bmp|rtf|js|flv|swf)$") {
set beresp.ttl = 8h;
} else {
set beresp.ttl = 8h;
}

return (deliver);
}

sub vcl_deliver {
set resp.http.x-hits = obj.hits ;
if (obj.hits > 0) {
set resp.http.X-Cache = "HIT From Server!";
} else {
set resp.http.X-Cache = "MISS Me!";
}

remove resp.http.X-Varnish;
remove resp.http.Via;
remove resp.http.Age;
remove resp.http.Server;
remove resp.http.X-Powered-By;

return (deliver);
}

sub vcl_error {
set obj.http.Content-Type = "text/html; charset=utf-8";
set obj.http.Retry-After = "5";
synthetic {"
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title>"} + obj.status + " " + obj.response + {"</title>
</head>
<body>
<h1>Error "} + obj.status + " " + obj.response + {"</h1>
<p>"} + obj.response + {"</p>
<h3>Guru Meditation:</h3>
<p>XID: "} + req.xid + {"</p>
<hr>
<p>xxxx cache server</p>
</body>
</html>
"};
return (deliver);
}

sub vcl_init {
return (ok);
}

sub vcl_fini {
return (ok);
}
solar
2014-05-30 17:08:17 +08:00
@rails3 那你看我的配置文件有啥毛病没？感谢。
rails3
2014-05-30 17:19:47 +08:00
@solar 没有问题，我用你的配置测试了
rails3
2014-05-30 17:25:55 +08:00
@solar http://momoniu.qiniudn.com/varnish-test.png 测试截图
solar
2014-05-30 18:10:29 +08:00
@rails3 我大概知道是啥意思。刚测试可以的。是我没搞清楚配置文件的意思。我自己在折腾吧。

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