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Update varnish config
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@robertdijk
robertdijk committed Oct 24, 2024
1 parent 8f6ac90 commit 310d192
Showing 1 changed file with 173 additions and 153 deletions.
326 changes: 173 additions & 153 deletions apps/varnish-proxy/configmap.yaml
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Expand Up @@ -5,197 +5,217 @@ metadata:
namespace: default
data:
default.vcl: |
vcl 4.0;
import directors;
vcl 4.1;
import std;
# Assumed 'wordpress' host, this can be docker servicename
backend default {
.host = "website";
.port = "80";
}
# Add hostnames, IP addresses and subnets that are allowed to purge content
acl purge {
"localhost";
"127.0.0.1";
"127.0.0.1";
"::1";
"10.20.0.0/16";
}
sub vcl_recv {
# Healthcheck
if(req.url == "/healthcheck") {
return(synth(200,"OK"));
sub vcl_recv {
# Remove empty query string parameters
# e.g.: www.example.com/index.html?
if (req.url ~ "\?$") {
set req.url = regsub(req.url, "\?$", "");
}
# Only a single backend
set req.backend_hint= default;
# Setting http headers for backend
set req.http.X-Forwarded-For = client.ip;
set req.http.X-Forwarded-Proto = "https";
# Unset headers that might cause us to cache duplicate infos
unset req.http.Accept-Language;
unset req.http.User-Agent;
# The purge...no idea if this works
if (req.method == "PURGE") {
if (!client.ip ~ purge) {
return(synth(405,"Not allowed."));
}
return (purge);
}
if ( std.port(server.ip) == 6080) {
# Remove port number from host header
set req.http.Host = regsub(req.http.Host, ":[0-9]+", "");
set req.http.x-redir = "https://" + req.http.host + req.url;
return (synth(750, "Moved permanently"));
}
# Sorts query string parameters alphabetically for cache normalization purposes
set req.url = std.querysort(req.url);
# drop cookies and params from static assets
if (req.url ~ "\.(gif|jpg|jpeg|swf|ttf|css|js|flv|mp3|mp4|pdf|ico|png)(\?.*|)$") {
unset req.http.cookie;
set req.url = regsub(req.url, "\?.*$", "");
}
# Remove the proxy header to mitigate the httpoxy vulnerability
# See https://httpoxy.org/
unset req.http.proxy;
# drop tracking params
if (req.url ~ "\?(utm_(campaign|medium|source|term)|adParams|client|cx|eid|fbid|feed|ref(id|src)?|v(er|iew))=") {
set req.url = regsub(req.url, "\?.*$", "");
}
# Only a single backend
set req.backend_hint= default;
# pass wp-admin urls
if (req.url ~ "(wp-login|wp-admin)" || req.url ~ "preview=true" || req.url ~ "xmlrpc.php") {
return (pass);
}
# Setting http headers for backend
set req.http.X-Forwarded-For = client.ip;
set req.http.X-Forwarded-Proto = "https";
# pass wp-admin cookies
if (req.http.cookie) {
if (req.http.cookie ~ "(wordpress_|wp-settings-)") {
return(pass);
# Unset headers that might cause us to cache duplicate infos
unset req.http.Accept-Language;
unset req.http.User-Agent;
# Healthcheck
if(req.url == "/healthcheck") {
return(synth(200,"OK"));
}
# Add X-Forwarded-Proto header when using https
if (!req.http.X-Forwarded-Proto) {
if(std.port(server.ip) == 443 || std.port(server.ip) == 8443) {
set req.http.X-Forwarded-Proto = "https";
} else {
unset req.http.cookie;
set req.http.X-Forwarded-Proto = "http";
}
}
}
sub vcl_backend_response {
# retry a few times if backend is down
if (beresp.status == 503 && bereq.retries < 3 ) {
return(retry);
}
if (bereq.http.Cookie ~ "(UserID|_session)") {
# if we get a session cookie...caching is a no-go
set beresp.http.X-Cacheable = "NO:Got Session";
set beresp.uncacheable = true;
return (deliver);
} elsif (beresp.ttl <= 0s) {
# Varnish determined the object was not cacheable
set beresp.http.X-Cacheable = "NO:Not Cacheable";
} elsif (beresp.http.set-cookie) {
# You don't wish to cache content for logged in users
set beresp.http.X-Cacheable = "NO:Set-Cookie";
set beresp.uncacheable = true;
return (deliver);
} elsif (beresp.http.Cache-Control ~ "private") {
# You are respecting the Cache-Control=private header from the backend
set beresp.http.X-Cacheable = "NO:Cache-Control=private";
set beresp.uncacheable = true;
return (deliver);
} else {
# Varnish determined the object was cacheable
set beresp.http.X-Cacheable = "YES";
# Remove Expires from backend, it's not long enough
unset beresp.http.expires;
}
# Set the clients TTL on this object
set beresp.http.cache-control = "max-age=900";
# Purge logic to remove objects from the cache.
# Tailored to the Proxy Cache Purge WordPress plugin
# See https://wordpress.org/plugins/varnish-http-purge/
if(req.method == "PURGE") {
if(!client.ip ~ purge) {
return(synth(405,"PURGE not allowed for this IP address"));
}
if (req.http.X-Purge-Method == "regex") {
ban("obj.http.x-url ~ " + req.url + " && obj.http.x-host == " + req.http.host);
return(synth(200, "Purged"));
}
ban("obj.http.x-url == " + req.url + " && obj.http.x-host == " + req.http.host);
return(synth(200, "Purged"));
}
# Set how long Varnish will keep it
set beresp.ttl = 1w;
# Only handle relevant HTTP request methods
if (
req.method != "GET" &&
req.method != "HEAD" &&
req.method != "PUT" &&
req.method != "POST" &&
req.method != "PATCH" &&
req.method != "TRACE" &&
req.method != "OPTIONS" &&
req.method != "DELETE"
) {
return (pipe);
}
# marker for vcl_deliver to reset Age:
set beresp.http.magicmarker = "1";
# Remove tracking query string parameters used by analytics tools
if (req.url ~ "(\?|&)(utm_source|utm_medium|utm_campaign|utm_content|gclid|cx|ie|cof|siteurl)=") {
set req.url = regsuball(req.url, "&(utm_source|utm_medium|utm_campaign|utm_content|gclid|cx|ie|cof|siteurl)=([A-z0-9_\-\.%25]+)", "");
set req.url = regsuball(req.url, "\?(utm_source|utm_medium|utm_campaign|utm_content|gclid|cx|ie|cof|siteurl)=([A-z0-9_\-\.%25]+)", "?");
set req.url = regsub(req.url, "\?&", "?");
set req.url = regsub(req.url, "\?$", "");
}
# unset cookies from backendresponse
if (!(bereq.url ~ "(wp-login|wp-admin)")) {
set beresp.http.X-UnsetCookies = "TRUE";
unset beresp.http.set-cookie;
set beresp.ttl = 1h;
}
# Only cache GET and HEAD requests
if (req.method != "GET" && req.method != "HEAD") {
set req.http.X-Cacheable = "NO:REQUEST-METHOD";
return(pass);
}
# long ttl for assets
if (bereq.url ~ "\.(gif|jpg|jpeg|swf|ttf|css|js|flv|mp3|mp4|pdf|ico|png)(\?.*|)$") {
set beresp.ttl = 365d;
# Mark static files with the X-Static-File header, and remove any cookies
# X-Static-File is also used in vcl_backend_response to identify static files
if (req.url ~ "^[^?]*\.(7z|avi|bmp|bz2|css|csv|doc|docx|eot|flac|flv|gif|gz|ico|jpeg|jpg|js|less|mka|mkv|mov|mp3|mp4|mpeg|mpg|odt|ogg|ogm|opus|otf|pdf|png|ppt|pptx|rar|rtf|svg|svgz|swf|tar|tbz|tgz|ttf|txt|txz|wav|webm|webp|woff|woff2|xls|xlsx|xml|xz|zip)(\?.*)?$") {
set req.http.X-Static-File = "true";
unset req.http.Cookie;
return(hash);
}
}
set beresp.grace = 1w;
# No caching of special URLs, logged in users and some plugins
if (
req.http.Cookie ~ "wordpress_(?!test_)[a-zA-Z0-9_]+|wp-postpass|comment_author_[a-zA-Z0-9_]+|woocommerce_cart_hash|woocommerce_items_in_cart|wp_woocommerce_session_[a-zA-Z0-9]+|wordpress_logged_in_|comment_author|PHPSESSID" ||
req.http.Authorization ||
req.url ~ "add_to_cart" ||
req.url ~ "edd_action" ||
req.url ~ "nocache" ||
req.url ~ "^/addons" ||
req.url ~ "^/bb-admin" ||
req.url ~ "^/bb-login.php" ||
req.url ~ "^/bb-reset-password.php" ||
req.url ~ "^/cart" ||
req.url ~ "^/checkout" ||
req.url ~ "^/control.php" ||
req.url ~ "^/login" ||
req.url ~ "^/logout" ||
req.url ~ "^/lost-password" ||
req.url ~ "^/my-account" ||
req.url ~ "^/product" ||
req.url ~ "^/register" ||
req.url ~ "^/register.php" ||
req.url ~ "^/server-status" ||
req.url ~ "^/signin" ||
req.url ~ "^/signup" ||
req.url ~ "^/stats" ||
req.url ~ "^/wc-api" ||
req.url ~ "^/wp-admin" ||
req.url ~ "^/wp-comments-post.php" ||
req.url ~ "^/wp-cron.php" ||
req.url ~ "^/wp-login.php" ||
req.url ~ "^/wp-activate.php" ||
req.url ~ "^/wp-mail.php" ||
req.url ~ "^/wp-login.php" ||
req.url ~ "^\?add-to-cart=" ||
req.url ~ "^\?wc-api=" ||
req.url ~ "^/preview=" ||
req.url ~ "^/\.well-known/acme-challenge/"
) {
set req.http.X-Cacheable = "NO:Logged in/Got Sessions";
if(req.http.X-Requested-With == "XMLHttpRequest") {
set req.http.X-Cacheable = "NO:Ajax";
}
return(pass);
}
# Remove any cookies left
unset req.http.Cookie;
return(hash);
}
sub vcl_hash {
if ( req.http.X-Forwarded-Proto ) {
hash_data( req.http.X-Forwarded-Proto );
}
}
sub vcl_backend_error {
# display custom error page if backend down
if (beresp.status == 503 && bereq.retries == 3) {
synthetic(std.fileread("/etc/varnish/error503.html"));
return(deliver);
}
}
sub vcl_synth {
# redirect for http
if (resp.status == 750) {
set resp.status = 301;
set resp.http.Location = req.http.x-redir;
return(deliver);
}
# display custom error page if backend down
if (resp.status == 503) {
synthetic(std.fileread("/etc/varnish/error503.html"));
return(deliver);
if(req.http.X-Forwarded-Proto) {
# Create cache variations depending on the request protocol
hash_data(req.http.X-Forwarded-Proto);
}
}
sub vcl_backend_response {
# Inject URL & Host header into the object for asynchronous banning purposes
set beresp.http.x-url = bereq.url;
set beresp.http.x-host = bereq.http.host;
sub vcl_deliver {
# oh noes backend is down
if (resp.status == 503) {
return(restart);
# If we dont get a Cache-Control header from the backend
# we default to 1h cache for all objects
if (!beresp.http.Cache-Control) {
set beresp.ttl = 1h;
set beresp.http.X-Cacheable = "YES:Forced";
}
if (resp.http.magicmarker) {
# Remove the magic marker
unset resp.http.magicmarker;
# By definition we have a fresh object
set resp.http.age = "0";
# If the file is marked as static we cache it for 1 day
if (bereq.http.X-Static-File == "true") {
unset beresp.http.Set-Cookie;
set beresp.http.X-Cacheable = "YES:Forced";
set beresp.ttl = 1d;
}
if (obj.hits > 0) {
set resp.http.X-Cache = "HIT";
} else {
set resp.http.X-Cache = "MISS";
}
set resp.http.Access-Control-Allow-Origin = "*";
}
sub vcl_hit {
if (req.method == "PURGE") {
return(synth(200,"OK"));
# Remove the Set-Cookie header when a specific Wordfence cookie is set
if (beresp.http.Set-Cookie ~ "wfvt_|wordfence_verifiedHuman") {
unset beresp.http.Set-Cookie;
}
if (beresp.http.Set-Cookie) {
set beresp.http.X-Cacheable = "NO:Got Cookies";
} elseif(beresp.http.Cache-Control ~ "private") {
set beresp.http.X-Cacheable = "NO:Cache-Control=private";
}
}
sub vcl_miss {
if (req.method == "PURGE") {
return(synth(404,"Not cached"));
}
}
sub vcl_deliver {
# Debug header
if(req.http.X-Cacheable) {
set resp.http.X-Cacheable = req.http.X-Cacheable;
} elseif(obj.uncacheable) {
if(!resp.http.X-Cacheable) {
set resp.http.X-Cacheable = "NO:UNCACHEABLE";
}
} elseif(!resp.http.X-Cacheable) {
set resp.http.X-Cacheable = "YES";
}
# Cleanup of headers
unset resp.http.x-url;
unset resp.http.x-host;
}

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