如何将 Varnish 容器与 PHP-FPM + NGINX 容器连接起来？Docker 启动正确，站点正常运行，但 backendopen 日志为空。
后端健康（返回 HTTP 200 状态）。
varnishlog-g raw-i 后端健康
0 Backend_health - default Still healthy 4---X-RH 7 5 10 0.048069 0.065633 "HTTP/1.1 200 OK"
从 http（nginx）容器中，我看到了 docker 日志中的请求。
docker 日志 http
[10/Sep/2021:17:24:01 +0000] "GET /health_check.php HTTP/1.1" 200 5 "-" "-"
但后端连接没有打开连接，日志是空的，通过以下方式验证：varnishlog -i backendopen命令。我尝试过此站点的解决方案，但没有用：docker-compose、ubuntu18 上的 Php+Nginx+Varnish。
docker-compose.yml
http:
build:
context: docker/http
container_name: http
ports:
- 80:80
- 443:443
depends_on:
- php
volumes:
- ./project:/var/www/project
php:
build:
context: docker/php
container_name: php
working_dir: /var/www/project
volumes:
- ./project:/var/www/project
varnish:
build:
context: docker/varnish
container_name: varnish
ports:
- 6081:6081
- 6082:6082
VCL配置：
vcl 4.0;
import std;
backend default {
.host = "http";
.port = "80";
.first_byte_timeout = 600s;
.probe = {
#.url = "/health_check.php";
.request =
"GET /health_check.php HTTP/1.1"
"Host: http"
"Connection: close";
.timeout = 2s;
.interval = 5s;
.window = 10;
.threshold = 5;
}
}
acl purge {
"http";
}
sub vcl_recv {
if (req.restarts > 0) {
set req.hash_always_miss = true;
}
if (req.method == "PURGE") {
if (client.ip !~ purge) {
return (synth(405, "Method not allowed"));
}
# To use the X-Pool header for purging varnish during automated deployments, make sure the X-Pool header
# has been added to the response in your backend server config. This is used, for example, by the
# capistrano-magento2 gem for purging old content from varnish during it's deploy routine.
if (!req.http.X-Magento-Tags-Pattern && !req.http.X-Pool) {
return (synth(400, "X-Magento-Tags-Pattern or X-Pool header required"));
}
if (req.http.X-Magento-Tags-Pattern) {
ban("obj.http.X-Magento-Tags ~ " + req.http.X-Magento-Tags-Pattern);
}
if (req.http.X-Pool) {
ban("obj.http.X-Pool ~ " + req.http.X-Pool);
}
return (synth(200, "Purged"));
}
if (req.method != "GET" &&
req.method != "HEAD" &&
req.method != "PUT" &&
req.method != "POST" &&
req.method != "TRACE" &&
req.method != "OPTIONS" &&
req.method != "DELETE") {
/* Non-RFC2616 or CONNECT which is weird. */
return (pipe);
}
# We only deal with GET and HEAD by default
if (req.method != "GET" && req.method != "HEAD") {
return (pass);
}
# Bypass shopping cart and checkout
if (req.url ~ "/checkout") {
return (pass);
}
# Bypass health check requests
if (req.url ~ "/pub/health_check.php") {
return (pass);
}
# Set initial grace period usage status
set req.http.grace = "none";
# normalize url in case of leading HTTP scheme and domain
set req.url = regsub(req.url, "^http[s]?://", "");
# collect all cookies
std.collect(req.http.Cookie);
# Compression filter. See https://www.varnish-cache.org/trac/wiki/FAQ/Compression
if (req.http.Accept-Encoding) {
if (req.url ~ "\.(jpg|jpeg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|swf|flv)$") {
# No point in compressing these
unset req.http.Accept-Encoding;
} elsif (req.http.Accept-Encoding ~ "gzip") {
set req.http.Accept-Encoding = "gzip";
} elsif (req.http.Accept-Encoding ~ "deflate" && req.http.user-agent !~ "MSIE") {
set req.http.Accept-Encoding = "deflate";
} else {
# unknown algorithm
unset req.http.Accept-Encoding;
}
}
# Remove all marketing get parameters to minimize the cache objects
if (req.url ~ "(\?|&)(gclid|cx|ie|cof|siteurl|zanpid|origin|fbclid|mc_[a-z]+|utm_[a-z]+|_bta_[a-z]+)=") {
set req.url = regsuball(req.url, "(gclid|cx|ie|cof|siteurl|zanpid|origin|fbclid|mc_[a-z]+|utm_[a-z]+|_bta_[a-z]+)=[-_A-z0-9+()%.]+&?", "");
set req.url = regsub(req.url, "[?|&]+$", "");
}
# Static files caching
if (req.url ~ "^/(pub/)?(media|static)/") {
# Static files should not be cached by default
return (pass);
# But if you use a few locales and don't use CDN you can enable caching static files by commenting previous line (#return (pass);) and uncommenting next 3 lines
#unset req.http.Https;
#unset req.http.X-Forwarded-Proto;
#unset req.http.Cookie;
}
# Authenticated GraphQL requests should not be cached by default
if (req.url ~ "/graphql" && req.http.Authorization ~ "^Bearer") {
return (pass);
}
return (hash);
}
sub vcl_hash {
if (req.http.cookie ~ "X-Magento-Vary=") {
hash_data(regsub(req.http.cookie, "^.*?X-Magento-Vary=([^;]+);*.*$", "\1"));
}
# To make sure http users don't see ssl warning
if (req.http.X-Forwarded-Proto) {
hash_data(req.http.X-Forwarded-Proto);
}
if (req.url ~ "/graphql") {
call process_graphql_headers;
}
}
sub process_graphql_headers {
if (req.http.Store) {
hash_data(req.http.Store);
}
if (req.http.Content-Currency) {
hash_data(req.http.Content-Currency);
}
}
sub vcl_backend_response {
set beresp.grace = 3d;
if (beresp.http.content-type ~ "text") {
set beresp.do_esi = true;
}
if (bereq.url ~ "\.js$" || beresp.http.content-type ~ "text") {
set beresp.do_gzip = true;
}
if (beresp.http.X-Magento-Debug) {
set beresp.http.X-Magento-Cache-Control = beresp.http.Cache-Control;
}
# cache only successfully responses and 404s
if (beresp.status != 200 && beresp.status != 404) {
set beresp.ttl = 0s;
set beresp.uncacheable = true;
return (deliver);
} elsif (beresp.http.Cache-Control ~ "private") {
set beresp.uncacheable = true;
set beresp.ttl = 86400s;
return (deliver);
}
# validate if we need to cache it and prevent from setting cookie
if (beresp.ttl > 0s && (bereq.method == "GET" || bereq.method == "HEAD")) {
unset beresp.http.set-cookie;
}
# If page is not cacheable then bypass varnish for 2 minutes as Hit-For-Pass
if (beresp.ttl <= 0s ||
beresp.http.Surrogate-control ~ "no-store" ||
(!beresp.http.Surrogate-Control &&
beresp.http.Cache-Control ~ "no-cache|no-store") ||
beresp.http.Vary == "*") {
# Mark as Hit-For-Pass for the next 2 minutes
set beresp.ttl = 120s;
set beresp.uncacheable = true;
}
return (deliver);
}
sub vcl_deliver {
if (resp.http.X-Magento-Debug) {
if (resp.http.x-varnish ~ " ") {
set resp.http.X-Magento-Cache-Debug = "HIT";
set resp.http.Grace = req.http.grace;
} else {
set resp.http.X-Magento-Cache-Debug = "MISS";
}
} else {
unset resp.http.Age;
}
# Not letting browser to cache non-static files.
if (resp.http.Cache-Control !~ "private" && req.url !~ "^/(pub/)?(media|static)/") {
set resp.http.Pragma = "no-cache";
set resp.http.Expires = "-1";
set resp.http.Cache-Control = "no-store, no-cache, must-revalidate, max-age=0";
}
unset resp.http.X-Magento-Debug;
unset resp.http.X-Magento-Tags;
unset resp.http.X-Powered-By;
unset resp.http.Server;
unset resp.http.X-Varnish;
unset resp.http.Via;
unset resp.http.Link;
}
sub vcl_hit {
if (obj.ttl >= 0s) {
# Hit within TTL period
return (deliver);
}
if (std.healthy(req.backend_hint)) {
if (obj.ttl + 300s > 0s) {
# Hit after TTL expiration, but within grace period
set req.http.grace = "normal (healthy server)";
return (deliver);
} else {
# Hit after TTL and grace expiration
return (restart);
}
} else {
# server is not healthy, retrieve from cache
set req.http.grace = "unlimited (unhealthy server)";
return (deliver);
}
}
答案1
尝试运行一下varnishlog -g request -q "ReqUrl eq '/'"，看看请求主页时发生的情况。
如果在缓存为空时执行此命令，我们应该看到 Varnish 尝试连接后端。
请在此处分享 VSL 输出，我会提供帮助。
更新
我注意到您的docker-compose.yml文件中您的http容器配置为处理端口80&上的流量443。
问题
容器varnish正在监听端口6081& 6082。除非您直接将流量路由到端口，否则6081很明显 Varnish 不会收到任何请求。
解决方案
请确保您的 Varnish 容器也监听端口 上的传入流量80。您可以在 VCL 中指向容器80上的端口http。
但就端口暴露而言，您可能希望将http容器的端口转发80到8080。这将避免与端口上的 Varnish 发生冲突80。
你也可以直接运行官方清漆图像而不是自己构建一个。
以下是有关如何运行和配置官方 Docker 镜像的教程：https://www.varnish-software.com/developers/tutorials/running-varnish-docker/
TLS 终止
目前端口443已链接到您的http容器。如果您可以在那里处理 TLS 终止并将 HTTPS 请求代理到 Varnish，那就没问题了。
如果没有，你可以运行一个 Hitch 容器为您执行 TLS 终止。