],
'fr_fr' => [
'title' => 'HATEOAS',
- 'description' => 'HATEOAS, abréviation d\'Hypermedia As Engine of Application State, Hypermédia en tant que moteur de l\'état d\'application, constitue une contrainte de l\'architecture d\'application REST qui la distingue de la plupart des autres architectures d\'applications réseau'
+ 'description' => 'HATEOAS, abréviation de Hypermedia As Engine of Application State, Hypermédia en tant que moteur de l\'état d\'application, constitue une contrainte de l\'architecture d\'application REST qui la distingue de la plupart des autres architectures d\'applications réseau'
]
],
'uri' => [
'mysql' => [
'en_gb' => [
'title' => 'MySQL',
- 'description' => 'MySQL is an open-source relational database management system, RDBMS'
+ 'description' => 'MySQL is a free and open-source relational database management system'
],
'fr_fr' => [
'title' => 'MySQL',
- 'description' => 'MySQL est un système de gestion de bases de données relationnelles libre'
+ 'description' => 'MySQL est un logiciel libre de gestion de bases de données relationnelles'
]
],
'azure' => [
'title' => 'Microsoft',
'description' => 'Microsoft Corporation est une multinationale informatique et micro-informatique américaine, fondée en 1975 par Bill Gates et Paul Allen'
]
- ]
+ ],
+ 'apache' => [
+ 'en_gb' => [
+ 'title' => 'Apache',
+ 'description' => 'Apache is a free and open-source HTTP server for modern operating systems'
+ ],
+ 'fr_fr' => [
+ 'title' => 'Apache',
+ 'description' => 'Apache est un logiciel libre serveur HTTP pour les systèmes d\'exploitation modernes'
+ ]
+ ],
+ 'haproxy' => [
+ 'en_gb' => [
+ 'title' => 'HAProxy',
+ 'description' => 'HAProxy is a reliable high performance TCP/HTTP free and open-source load balancer'
+ ],
+ 'fr_fr' => [
+ 'title' => 'HAProxy',
+ 'description' => 'HAProxy est un logiciel libre équilibreur de charge TCP/HTTP fiable et haute performance'
+ ]
+ ],
+ 'http' => [
+ 'en_gb' => [
+ 'title' => 'HTTP',
+ 'description' => 'HTTP, abbreviation of HyperText Transfer Protocol, is a network client-server communications protocol developed for the World Wide Web'
+ ],
+ 'fr_fr' => [
+ 'title' => 'HTTP',
+ 'description' => 'HTTP, abréviation de HyperText Transfer Protocol, est un protocole de communication client-serveur réseau développé pour le World Wide Web'
+ ]
+ ],
+ 'proxy' => [
+ 'en_gb' => [
+ 'title' => 'Proxy',
+ 'description' => 'Intermediate server application between two hosts to improve privacy, security and performance'
+ ],
+ 'fr_fr' => [
+ 'title' => 'Serveur mandataire',
+ 'description' => 'Application serveur intermédiaire entre deux hôtes pour améliorer la confidentialité, la sécurité et les performances'
+ ]
+ ],
+ 'quic' => [
+ 'en_gb' => [
+ 'title' => 'QUIC',
+ 'description' => 'QUIC, abbreviation of Quick UDP Internet Connections, is a fast network client-server communications protocol over UDP developed for Google'
+ ],
+ 'fr_fr' => [
+ 'title' => 'QUIC',
+ 'description' => 'QUIC, abréviation de Quick UDP Internet Connections, est un protocole de communication client-serveur réseau rapide sur UDP développé pour Google'
+ ]
+ ],
+ 'mageia' => [
+ 'en_gb' => [
+ 'title' => 'Mageia',
+ 'description' => 'Mageia is a free operating system community project, based on GNU/Linux, supported by a French 1901 law association made up of elected contributors'
+ ],
+ 'fr_fr' => [
+ 'title' => 'Mageia',
+ 'description' => 'Mageia est un projet communautaire de système d\'exploitation libre, basé sur GNU/Linux, soutenu par une association loi 1901 française constituée de contributeurs élus'
+ ]
+ ],
+ 'google' => [
+ 'en_gb' => [
+ 'title' => 'Google',
+ 'description' => 'Google organize the world\'s information and make it universally accessible and useful'
+ ],
+ 'fr_fr' => [
+ 'title' => 'Google',
+ 'description' => 'Google organise les informations à l\'échelle mondiale pour les rendre accessibles et utiles à tous'
+ ]
+ ],
];
//Create 3 keywords
'keywords' => ['image', 'imagick', 'png'],
'translations' => [
'en_gb' => [
- 'title' => 'How to reliably detect PNG image transparency with PHP',
- 'description' => 'I recently had to find out if a PNG has transparency using PHP.
- All the code I found didn\'t seemed to work correctly for the various kind of PNG I had to deal with.
- Here is the function I used.',
- 'body' => 'I recently had to find out if a PNG has transparency using PHP.
-All the code I found didn\'t seemed to work correctly for the various kind of PNG I had to deal with.
+ 'title' => 'How to reliably detect transparency in PNG image with PHP',
+ 'description' => 'Reliable PHP function to detect PNG images with transparency supporting all the variants to process.',
+ 'body' => 'The primary need is to find out if a PNG has transparency using PHP.
-I finished using the following function:
+All the code I found didn\'t seemed to work correctly for the collection of PNG I had to convert.
+I finished using the following function:
```php
function png_has_transparency($im) {
//Retrieve content from imagick object
],
'fr_fr' => [
'title' => 'Comment détecter la tranparence dans des images PNG en PHP de manière fiable',
- 'description' => 'J\'ai récemment du trouver comment détecter en PHP les images PNG transparentes.
- Les codes trouvés ne semblaient pas fonctionner de manière satisfaisante pour les différents types de PNG à contrôler.
- Voici la fonction que j\'ai fini par utiliser.',
- 'body' => 'J\'ai récemment du trouver comment détecter en PHP les images PNG transparentes.
+ 'description' => 'Fonction PHP fiable pour détecter les images PNG avec transparence prenant en charge toutes les variantes à traiter.',
+ 'body' => 'Le besoin principal est de savoir si un PNG a de la transparence en utilisant PHP.
+
Les codes trouvés ne semblaient pas fonctionner de manière satisfaisante pour les différents types de PNG à contrôler.
-J\'ai fini par utiliser la fonction suivante:
+J\'ai fini par utiliser la fonction suivante:
```php
function png_has_transparency($im) {
//Retrieve content from imagick object
],
[
'mail' => 'blog@rapsys.eu',
- 'keywords' => ['hateoas', 'rest', 'uri', 'varnish', 'webservice'],
+ 'keywords' => ['hateoas', 'http', 'rest', 'uri', 'varnish', 'webservice'],
'translations' => [
'en_gb' => [
- 'title' => 'Caching webservice with varnish',
- 'description' => 'I recently had to find a way to cache a webservice anwsers.
- Here is the Varnish configuration fitting my needs.',
- 'body' => 'I recently had to find a way to cache a webservice anwsers.
+ 'title' => 'Caching webservice with Varnish',
+ 'description' => 'Cache a webservice responses by ignoring the Authorization header using Varnish.',
+ 'body' => 'The primary goal is to find a way to reduce the load of a webservice by caching its responses.
The webservice is a RESTfull API serving as a gateway between a private HATEOAS API and a client generating more than 500 000 requests a day.
With this configuration, we divided by 5 the quantity of request on our gateway from the client who was not able to cache our result himself.'
],
'fr_fr' => [
- 'title' => 'Mise en cache de webservice avec varnish',
- 'description' => 'J\'ai eu récemment à trouver comment mettre en cache les réponses d\'un webservice.
- Voici la configuration varnish qui a répondu à mes besoins.',
- 'body' => 'J\'ai eu récemment à trouver comment mettre en cache les réponses d\'un webservice.
+ 'title' => 'Mise en cache de webservice avec Varnish',
+ 'description' => 'Mettre en cache les réponses d\'un service web en ignorant l’en-tête Authorization à l’aide de Varnish.',
+ 'body' => 'Le but premier est de trouver une solution pour réduire la charge d\'un service web en mettant en cache ses réponses.
L\'API RESTfull du webservice sert de passerelle entre un API privé HATEOAS et un client générant plus de 500 000 requêtes par jour.
],
[
'mail' => 'blog@rapsys.eu',
- 'keywords' => ['amazon', 'azure', 'cidr', 'microsoft', 'mysql', 'php', 'webservice'],
+ 'keywords' => ['amazon', 'azure', 'cidr', 'http', 'microsoft', 'mysql', 'php', 'webservice', 'google'],
'translations' => [
'en_gb' => [
'title' => 'Dealing with IP range in PHP/MySQL',
- 'description' => 'I recently had to deal with CIDR blocks to tighten some webservice security.
- Here is how I designed it to fulfill my needs.',
- 'body' => 'I recently had to deal with CIDR blocks to tighten some webservice security.
+ 'description' => 'Secure a webservice by granting access only to remote IP address included in a CIDR blocks set.',
+ 'body' => 'The goal is to process some CIDR blocks to tighten a webservice security.
First let\'s see how to compute the first and last address of an IP range with just the block base IP and mask:
}
```
-Microsoft Azure Ip ranges urls:
+Microsoft Azure IP ranges urls:
- <https://www.microsoft.com/en-us/download/details.aspx?id=41653>
-- <https://msdn.microsoft.com/library/mt757330.aspx>'
+- <https://msdn.microsoft.com/library/mt757330.aspx>
+
+Google IP ranges urls:
+- <https://support.google.com/a/answer/10026322?hl=en>'
],
'fr_fr' => [
'title' => 'Gestion des plages d\'IP en PHP/MySQL',
- 'description' => 'J\'ai eu récemment à trouver comment restreindre l\'accès à un service en ligne à certaines plages d\'IP. Voici la solution qui a répondu à mes besoins.',
- 'body' => 'J\'ai récemment du autoriser l\'accès à un service en ligne à seulement quelques plages d\'IP.
+ 'description' => 'Sécuriser un service web en accordant l\'accès uniquement à l\'adresse IP distante incluse dans un jeu de blocs CIDR.',
+ 'body' => 'L\'objectif est de traiter des blocs CIDR pour renforcer la sécurité d’un service web.
Premièrement, voyons comment calculer la première et la dernière adresse IP d\'une plage (bloc CIDR) avec sa base et son masque :
Urls pour les plages d\'IP de Microsoft Azure :
- <https://www.microsoft.com/en-us/download/details.aspx?id=41653>
-- <https://msdn.microsoft.com/library/mt757330.aspx>'
+- <https://msdn.microsoft.com/library/mt757330.aspx>
+
+Urls pour les plages d\'IP de Google :
+- <https://support.google.com/a/answer/10026322?hl=en>'
+ ]
+ ]
+ ],
+ [
+ 'mail' => 'blog@rapsys.eu',
+ 'keywords' => ['apache', 'haproxy', 'http', 'mageia', 'proxy', 'quic'],
+ 'translations' => [
+ 'en_gb' => [
+ 'title' => 'A load balancer to standardize access to heterogeneous web services',
+ 'description' => 'Setup a single entry point for various web services including Apache and a few others available on exotic ports.',
+ 'body' => 'The primary need is to set up a single entry point for different web services including Apache and a few others on exotic ports.
+
+Like any new project, implementation, as usual, took longer than initially expected.
+
+To this end, I packaged the HAProxy service in the Mageia Linux distribution with a transparent proxy configuration by default.
+
+HAProxy does not support the certificate path layout used on Red Hat-derived distributions, where public and private keys are separated into two separate files in two different directories.
+
+HAProxy suffers from a critical bug when using standard output for logging which resumes at the beginning of the file after a restart.
+
+HAProxy is penalized by disabling the buffer on its standard output when used for logging.
+
+Three fixes were made by me for this purpose to resolve these problems:
+- support for certificate path layout for Red Hat distribution
+- no longer starts at the beginning of the log file after a restart
+- no longer deactivate the standard output buffer
+
+New features are being developed for the next version of HAProxy that could make my choices and developments on logging obsolete.
+
+To make support of the HTTP/3 protocol possible by HAProxy, it was necessary to integrate the quictls library, a branch of OpenSSL with support for the QUIC protocol.
+
+To install the server:
+```bash
+# urpmi haproxy haproxy-quic
+```
+
+Activate the service:
+```bash
+# systemctl enable haproxy.service
+```
+
+Start the service:
+```bash
+# systemctl start haproxy.service
+```
+
+In order to avoid a waltz of ports when integrating into an existing architecture, port indirection in Shorewall is proposed:
+```shorewall
+# Redirect tcp traffic from net on port 80 to 8000
+REDIRECT net 8000 tcp 80
+# Redirect tcp traffic from net on port 443 to 8000
+REDIRECT net 8000 tcp 443
+# Redirect udp traffic from net on port 443 to 8443
+REDIRECT net 8443 udp 443
+```
+
+This allows HAProxy to capture HTTP and HTTPS traffic on port 8000/TCP and QUIC on port 8443/UDP.
+
+The default configuration captures HTTP and HTTPS traffic on the tcp_default front end, then switches it to the tcp_http and tcp_https back ends, the latter will send the flows to the http_default and https_default front ends, taking care to add a proxy header to transmit the original IP address and port. This configuration allows other TCP services (SSH, VPN, etc.) to be captured and redistributed as needed.
+
+The traffic is then received by the http_default and https_default front-ends respectively, the original IP address and port is preserved via the proxy header received from the TCP back-ends.
+
+They can advertise HTTP/3 support, clean up some headers, deny access to bots, forward original IP addresses and ports via a Forwarded header, and distribute to different backends based on hosts and requested paths.
+
+Configuring Apache to receive the proxy header is problematic, it\'s simpler to pass the Forwarded header than to configure the freshly released mod_remoteip.
+
+Support for the HTTP/3 protocol is announced by sending an alt-svc: h3="<host>:<port>"; ma=<timeout> where host can be empty, port=443 and timeout=3600 for example. The certificate served must match the initial host name and not the offload server for security reasons.
+
+Configuring the different http backends will come down to declaring the offload servers, the additional headers to add, the compression according to the content types and the method to test their health.
+
+Without further ado, the configuration to adapt to your needs:
+```haproxy
+# HAProxy configuration file
+
+# Global config
+global
+ # Log to systemd
+ log stdout format short daemon
+ # Number of threads
+ nbthread 8
+ # Pid file
+ pidfile /run/haproxy/haproxy.pid
+
+ # Stat socket
+ stats socket /run/haproxy/haproxy.sock mode 0660 level admin
+ # Stat timeout
+ stats timeout 10s
+ # Max connections
+ stats maxconn 10
+
+ # Certificate base dir
+ crt-base /etc/pki/tls/certs
+ # Private key base dir
+ key-base /etc/pki/tls/private
+ # Don\'t load extra files
+ ssl-load-extra-files none
+ # Disable SSL-v3 TLSv1.0 TLSv1.1 and TLS tickets
+ ssl-default-server-options ssl-min-ver TLSv1.2 no-tls-tickets
+ # Do not verify certificate
+ ssl-server-verify none
+ # Supported bind ciphers
+ #XXX: https://wiki.mozilla.org/Security/Server_Side_TLS#Recommended-configurations
+ ssl-default-bind-ciphers TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
+
+ # SSL/TLS session cache size
+ tune.ssl.cachesize 20000
+ # SSL/TLS session life time in cache
+ tune.ssl.lifetime 300
+ # SSL/TLS layer maximum passed bytes at a time
+ tune.ssl.maxrecord 0
+ # Diffie-Hellman ephemeral keys max size
+ tune.ssl.default-dh-param 2048
+ # Buffer size
+ tune.bufsize 16384
+ # Reserved buffer size
+ tune.maxrewrite 1024
+ # Max number of headers
+ tune.http.maxhdr 101
+
+
+# Default config
+defaults
+ # Use global log
+ log global
+
+ # Set balance mode
+ balance random
+ # Set http mode
+ mode http
+ # Set http keep alive mode
+ #XXX: https://cbonte.github.io/haproxy-dconv/2.3/configuration.html#4
+ option http-keep-alive
+ # Dont log empty line
+ option dontlognull
+ # Dissociate client from dead server
+ option redispatch
+
+ # Number of retries on connection failure
+ retries 3
+ # Max concurrent connections
+ maxconn 30000
+ # Max pending connections
+ backlog 30000
+
+ # Max time for a connection attempt
+ timeout connect 5s
+ # Max inactivitiy time on client side
+ timeout client 60s
+ # Max inactivitiy time on server side
+ timeout server 60s
+ # Max inactivitiy time on client and server for tunnels
+ timeout tunnel 3600s
+ # Max time for new request
+ timeout http-keep-alive 1s
+ # Max time for a complete http request
+ timeout http-request 15s
+ # Max time for a free slot
+ timeout queue 5s
+ # Duration for tarpitted connections
+ timeout tarpit 5s
+
+ # Error documents
+ errorfile 400 /usr/share/doc/haproxy/error/400.http
+ errorfile 403 /usr/share/doc/haproxy/error/403.http
+ errorfile 408 /usr/share/doc/haproxy/error/408.http
+ errorfile 500 /usr/share/doc/haproxy/error/500.http
+ errorfile 502 /usr/share/doc/haproxy/error/502.http
+ errorfile 503 /usr/share/doc/haproxy/error/503.http
+ errorfile 504 /usr/share/doc/haproxy/error/504.http
+
+
+# Default tcp frontend
+frontend tcp_default
+ # Set tcp mode
+ mode tcp
+ # Bind to 8000 port
+ bind :::8000
+ # Log disabled
+ no log
+ # Set tcp log
+ #option tcplog
+ # Set inspect delay
+ tcp-request inspect-delay 5s
+ # Wait for extension detection
+ #tcp-request content accept if { req.proto_http } or { req.ssl_hello_type 1 } or { req.ssl_ec_ext 1 }
+ tcp-request content accept if { req.proto_http } or { req.ssl_hello_type 1 }
+
+ # Send to https tcp backend
+ use_backend tcp_https if { req.ssl_hello_type 1 }
+
+ # Send to ec tcp backend
+ #use_backend tcp_ec if { req.ssl_ec_ext 1 }
+
+ # Send to OpenVPN backend
+ #acl openvpn payload(0,2) -m bin 003c
+ #tcp-request content accept if openvpn
+ #use_backend tcp_openvpn if openvpn
+
+ # Send to OpenSSH backend
+ #XXX: https://jonnyzzz.com/blog/2017/05/24/ssh-haproxy/
+ #XXX: https://issues.apache.org/jira/browse/SSHD-656
+ #acl ssh payload(0,7) -m str SSH-2.0
+ #tcp-request content accept if ssh
+ #use_backend tcp_ssh if ssh
+
+ # Send to http tcp backend (if { req.proto_http })
+ default_backend tcp_http
+
+
+# Http tcp backend
+backend tcp_http
+ # Set tcp mode
+ mode tcp
+ # Send to localhost without ssl with v2 proxy header
+ server haproxy 127.0.0.1:8080 no-ssl verify none send-proxy-v2
+
+
+# Https tcp backend
+backend tcp_https
+ # Set tcp mode
+ mode tcp
+ # Send to localhost without ssl with v2 proxy header
+ server haproxy 127.0.0.1:8443 no-ssl verify none send-proxy-v2-ssl
+
+
+# Default http frontend
+frontend http_default
+ # Bind to 8080 port
+ bind :::8080 accept-proxy
+ # Insert X-Forwarded-For header
+ option forwardfor
+ # Set http log format
+ option httplog
+ # Log enabled
+ log global
+
+ # Check if acme challenge
+ acl acme_challenge path_beg /.well-known/acme-challenge/
+
+ # Add X-Backend header
+ #http-response add-header X-Backend %[haproxy.backend_name]
+
+ # Advertise QUIC
+ #http-response add-header alt-svc \'h3=":443"; ma=3600\'
+ #http-after-response add-header alt-svc \'h3=":443"; ma=3600\'
+
+ # Remove server and x-powered-by headers
+ #http-after-response del-header server
+ #http-after-response del-header x-powered-by
+
+ # Redirect to https scheme when unsecure and not acme challenge
+ http-request redirect scheme https code 302 unless { ssl_fc } || acme_challenge
+
+ # Check if denied path
+ #XXX: use ,url_dec like in https://serverfault.com/questions/754752/block-specific-url-in-haproxy-url-encoding
+ #acl denied_path path_reg ^/(\.env|login|admin/|wp-login\.php|\.git/config)$
+ # Deny access on denied path
+ #http-request deny if denied_path
+
+ # Check if protected path
+ #acl protected_path path_reg ^/(contact|register)$
+ # Deny access on protected path
+ #http-request deny deny_status 503 if protected_path { method \'POST\' } { req.ver \'1.0\' }
+
+ # Store origin variable as txn
+ http-request set-var(txn.origin) req.hdr(Origin)
+ # Store host variable as txn
+ http-request set-var(txn.host) req.hdr(Host),field(1,:),lower
+ # Store proto variable as txn
+ http-request set-var(txn.proto) ssl_fc,iif(https,http)
+
+ # Set forwarded proto
+ http-request set-header X-Forwarded-Proto %[var(txn.proto)]
+ # Set forwarded port
+ http-request set-header X-Forwarded-Port %[dst_port]
+ # Set forwarded for
+ #http-request set-header X-Forwarded-For %[src]
+ # Set forwarded by
+ http-request set-header X-Forwarded-By %[dst]
+
+ # Set forwarded
+ #http-request set-header Forwarded by=%[dst]:%[dst_port];for=%[src]:%[src_port];host=%[var(txn.host)];proto=%[var(txn.proto)]
+ http-request set-header Forwarded by=%[dst]:%[dst_port];for=%[src]:%[src_port];proto=%[var(txn.proto)]
+
+ # Check if host is cdn.example.com
+ acl cdn var(txn.host) -m str cdn.example.com
+ # Check if cdn css path
+ acl cdn_css path_beg /css
+ # Check if cdn js path
+ acl cdn_js path_beg /js
+ # Check if haproxy status path
+ acl haproxy_status path_beg /haproxy-status
+ # Check if debug path
+ acl debug path_beg /debug
+
+ # Send to css backend if path start with /css
+ use_backend http_css if cdn cdn_css
+ # Send to js backend if path start with /js
+ use_backend http_js if cdn cdn_js
+ # Send to status backend if path start with /haproxy-status
+ use_backend http_status if haproxy_status
+ # Send to debug backend if path start with /debug
+ use_backend http_debug if debug
+
+ # Send to https backend
+ use_backend https_default if { ssl_fc }
+
+ # Send to default backend
+ default_backend http_default
+
+# Default https frontend
+#XXX: copy of upper one, just done to skip logs here
+frontend https_default
+ # Bind to 8443 tcp port as ssl
+ bind :::8443 ssl crt haproxy.pem alpn h2,http/1.1,http/1.0 accept-proxy
+ # Bind to 8443 udp port as ssl
+ #bind quic6@:::8443 ssl crt haproxy.pem alpn h3
+ # Insert X-Forwarded-For header
+ option forwardfor
+ # Set http log format
+ option httplog
+ # Log enabled
+ log global
+
+ # Check if acme challenge
+ acl acme_challenge path_beg /.well-known/acme-challenge/
+
+ # Add X-Backend header
+ #http-response add-header X-Backend %[haproxy.backend_name]
+
+ # Advertise QUIC
+ #http-response add-header alt-svc \'h3=":443"; ma=3600\'
+ #http-after-response add-header alt-svc \'h3=":443"; ma=3600\'
+
+ # Remove server and x-powered-by headers
+ #http-after-response del-header server
+ #http-after-response del-header x-powered-by
+
+ # Redirect to https scheme when unsecure and not acme challenge
+ http-request redirect scheme https code 302 unless { ssl_fc } || acme_challenge
+
+ # Check if denied path
+ #XXX: use ,url_dec like in https://serverfault.com/questions/754752/block-specific-url-in-haproxy-url-encoding
+ #acl denied_path path_reg ^/(\.env|login|admin/|wp-login\.php|\.git/config)$
+ # Deny access on denied path
+ #http-request deny if denied_path
+
+ # Check if protected path
+ #acl protected_path path_reg ^/(contact|register)$
+ # Deny access on protected path
+ #http-request deny deny_status 503 if protected_path { method \'POST\' } { req.ver \'1.0\' }
+
+ # Store origin variable as txn
+ http-request set-var(txn.origin) req.hdr(Origin)
+ # Store host variable as txn
+ http-request set-var(txn.host) req.hdr(Host),field(1,:),lower
+ # Store proto variable as txn
+ http-request set-var(txn.proto) ssl_fc,iif(https,http)
+
+ # Set forwarded proto
+ http-request set-header X-Forwarded-Proto %[var(txn.proto)]
+ # Set forwarded port
+ http-request set-header X-Forwarded-Port %[dst_port]
+ # Set forwarded for
+ #http-request set-header X-Forwarded-For %[src]
+ # Set forwarded by
+ http-request set-header X-Forwarded-By %[dst]
+
+ # Set forwarded
+ #http-request set-header Forwarded by=%[dst]:%[dst_port];for=%[src]:%[src_port];host=%[var(txn.host)];proto=%[var(txn.proto)]
+ http-request set-header Forwarded by=%[dst]:%[dst_port];for=%[src]:%[src_port];proto=%[var(txn.proto)]
+
+ # Check if host is cdn.example.com
+ acl cdn var(txn.host) -m str cdn.example.com
+ # Check if cdn css path
+ acl cdn_css path_beg /css
+ # Check if cdn js path
+ acl cdn_js path_beg /js
+ # Check if haproxy status path
+ acl haproxy_status path_beg /haproxy-status
+ # Check if debug path
+ acl debug path_beg /debug
+
+ # Send to css backend if path start with /css
+ use_backend http_css if cdn cdn_css
+ # Send to js backend if path start with /js
+ use_backend http_js if cdn cdn_js
+ # Send to status backend if path start with /haproxy-status
+ use_backend http_status if haproxy_status
+ # Send to debug backend if path start with /debug
+ use_backend http_debug if debug
+
+ # Send to https backend
+ use_backend https_default if { ssl_fc }
+
+ # Send to default backend
+ default_backend http_default
+
+
+# Debug http backend
+backend http_debug
+ # Check if trusted
+ acl trusted src 127.0.0.0/8 ::1
+ # Allow access from trusted only
+ http-request deny unless trusted
+ # Server without ssl or check
+ server debug 127.0.0.1:8090 no-ssl verify none
+
+
+# Default http backend
+backend http_default
+ # Enable check
+ option httpchk
+ # User server default
+ http-check connect default
+ # Send HEAD on / with protocol HTTP/1.1 for host example.com
+ http-check send meth HEAD uri / ver HTTP/1.1 hdr Host example.com
+ # Expect return code between 200 and 399
+ http-check expect status 200-399
+
+ # Insert header X-Server: apache
+ #http-response add-header X-Server apache
+
+ # Set compression algorithm
+ #compression algo gzip
+ # Enable compression for html, plain and css text types
+ #compression type text/html text/plain text/css
+
+ # Server with ssl and check without certificate verification
+ server apache 127.0.0.1:80 no-ssl verify none check #cookie apache
+
+
+# Default https backend
+backend https_default
+ # Enable check
+ option httpchk
+ # User server default
+ http-check connect default
+ # Send HEAD on / with protocol HTTP/1.1 for host example.com
+ http-check send meth HEAD uri / ver HTTP/1.1 hdr Host example.com
+ # Expect return code between 200 and 399
+ http-check expect status 200-399
+
+ # Insert header X-Server: apache
+ #http-response add-header X-Server apache
+
+ # Force HSTS for 5 minutes on domain and all subdomains
+ #http-response set-header Strict-Transport-Security max-age=300#;\ includeSubDomains#;\ preload
+
+ # Set compression algorithm
+ #compression algo gzip
+ # Enable compression for html, plain and css text types
+ #compression type text/html text/plain text/css
+
+ # Server with ssl and check without certificate verification
+ server apache 127.0.0.1:443 ssl verify none check #cookie apache
+
+
+# Css http backend
+backend http_css
+ # Enable check
+ option httpchk
+ # User server default
+ http-check connect default
+ # Send GET on /css/empty.css with protocol HTTP/1.1 for host cdn.example.com
+ http-check send meth GET uri /css/empty.css ver HTTP/1.1 hdr Host cdn.example.com
+ # Expect return code between 200 and 399
+ http-check expect status 200-399
+
+ # Server with check without ssl and certificate verification
+ server css 127.0.0.1:80 no-ssl verify none check
+
+
+# Js http backend
+backend http_js
+ # Enable check
+ option httpchk
+ # User server default
+ http-check connect default
+ # Send HEAD on /js/missing.js with protocol HTTP/1.1 for host cdn.example.com
+ http-check send meth HEAD uri /js/missing.js ver HTTP/1.1 hdr Host cdn.example.com
+ # Expect return code 404
+ http-check expect status 404
+
+ # Check if txn.origin start with https://cdn.example.com
+ acl cdn_origin var(txn.origin) -m beg https://cdn.example.com
+ # Send origin as ACAO
+ http-response set-header Access-Control-Allow-Origin %[var(txn.origin)] if cdn_origin
+ # Set ACMA for one day
+ http-response set-header Access-Control-Max-Age 86400 if cdn_origin
+
+ # Server with check without ssl and certificate verification
+ server js 127.0.0.1:80 no-ssl verify none check
+
+
+# Status user list
+userlist status
+ # Add user admin
+ user admin insecure-password ADMINPASSWORD
+ # Add user operator
+ user operator insecure-password OPERATORPASSWORD
+ # Assign admin in admin group
+ group admin users admin
+ # Assign operator and admin in operator group
+ group operator users operator,admin
+
+
+# Status http backend
+backend http_status
+ # Add operator acl
+ acl is_operator http_auth(status)
+ # Add admin acl
+ acl is_admin http_auth_group(status) admin
+ # Check if trusted
+ acl trusted src 127.0.0.0/8 ::1
+ # Enable stats
+ stats enable
+ # Set stats hook on /haproxy-status
+ stats uri /haproxy-status
+ # Set refresh time
+ stats refresh 10s
+ # Display legends
+ stats show-legends
+ # Display node
+ stats show-node
+ # Allow access from trusted or authentified operator only
+ #stats http-request auth unless trusted or is_operator
+ stats http-request auth unless trusted
+ # Activate admin interface from trusted or authentified admin only
+ #stats admin if is_admin
+```
+
+Hope this article was helpful to you.'
+ ],
+ 'fr_fr' => [
+ 'title' => 'Un équilibreur de charge pour standardiser l\'accès aux services web hétérogènes',
+ 'description' => 'Configurer un point d\'entrée unique pour différents services web dont Apache et quelques autres disponibles sur des ports exotiques.',
+ 'body' => 'Le besoin principal est de mettre en place un point d\'entrée unique pour différents services web dont Apache et quelques autres sur des ports exotiques.
+
+Comme tout nouveau projet, la mise en œuvre, comme d\'habitude, a nécessité plus de temps que prévu initialement.
+
+À cet effet, j\'ai réalisé la mise en paquet du service HAProxy dans la distribution linux Mageia avec une configuration de proxy transparent par défaut.
+
+HAProxy ne prend pas en charge la disposition de chemin des certificats utilisée sur les distributions dérivées de Red Hat, où clef publique et privée sont séparées en deux fichiers distincts dans deux répertoires différents.
+
+HAProxy souffre d\'un bug critique lors de l\'usage de la sortie standard pour la journalisation qui reprend en début de fichier après un redémarage.
+
+HAProxy est pénalisé par la désactivation du tampon sur sa sortie standard lorsqu\'elle est utilisée pour la journalisation.
+
+Trois correctifs ont été réalisé par mes soins à cet effet pour résoudre ces problèmes sur le chemin de mes besoins :
+- prise en charge de la disposition de chemin des certificats pour distribution Red Hat
+- ne recommence plus au début du fichier journal après un redémarage
+- ne plus désactiver le tampon de la sortie standard
+
+De nouvelles fonctionnalités sont en cours de développement pour la prochaine version d\'HAProxy qui pourraient rendre obsolètes mes choix et développements sur la journalisation.
+
+Pour rendre possible la prise en charge du protocole HTTP/3 par HAProxy, il a été nécessaire d\'intégrer la librairie quictls, une branche d\'OpenSSL avec support du protocole QUIC.
+
+Pour installer le serveur :
+```bash
+# urpmi haproxy haproxy-quic
+```
+
+Activer le service :
+```bash
+# systemctl enable haproxy.service
+```
+
+Démarrer le service :
+```bash
+# systemctl start haproxy.service
+```
+
+Afin d\'éviter une valse de ports lors de l\'intégration dans une architecture existante, l\'indirection de ports dans Shorewall est proposée :
+```shorewall
+# Redirect tcp traffic from net on port 80 to 8000
+REDIRECT net 8000 tcp 80
+# Redirect tcp traffic from net on port 443 to 8000
+REDIRECT net 8000 tcp 443
+# Redirect udp traffic from net on port 443 to 8443
+REDIRECT net 8443 udp 443
+```
+
+Cela permet à HAProxy de capturer le trafic HTTP et HTTPS sur le port 8000/TCP et QUIC sur le port 8443/UDP.
+
+La configuration par défaut capture le trafic HTTP et HTTPS sur le frontal tcp_default, puis le bascule sur les dorsaux tcp_http et tcp_https, ces derniers enverront les flux sur les frontaux http_default et https_default, en prenant soin d\'ajouter un en-tête proxy pour transmettre l\'adresse IP et le port d\'origine. Cette configuration permet à d\'autre services TCP (SSH, VPN, etc) d\'être capturés et redistribués au besoin.
+
+Le trafic est ensuite reçu respectivement par les frontaux http_default et https_default, l\'adresse IP et le port d\'origine est conservée via l\'en-tête proxy reçu des dorsaux TCP.
+
+Ils peuvent annoncer la prise en charge de HTTP/3, nettoyer certains en-têtes, refuser l\'accès aux robots, transférer les adresses IP et ports d\'origine via un en-tête Forwarded et distribuer à différents dorsaux en fonction des hôtes et chemins demandés.
+
+Configurer Apache pour recevoir l\'en-tête proxy est problématique, il est plus simple de transmettre l\'en-tête Forwarded que de configurer le fraîchement publié mod_remoteip.
+
+La prise en charge du protocole HTTP/3 est annoncée par l\'envoi d\'un en-tête alt-svc: h3="<host>:<port>"; ma=<timeout> où host peut être vide, port=443 et timeout=3600 par exemple. Le certificat servi doit correspondre au nom d\'hôte initial et non à celui du serveur de déchargement pour des raisons de sécurité.
+
+Configurer les différents backends http se résumera à déclarer les serveurs de déchargement, les en-têtes supplémentaires à ajouter, la compression selon les types de contenus et la méthode pour tester leur santé.
+
+Sans plus attendre la configuration à adapter à vos besoins :
+```haproxy
+# HAProxy configuration file
+
+# Global config
+global
+ # Log to systemd
+ log stdout format short daemon
+ # Number of threads
+ nbthread 8
+ # Pid file
+ pidfile /run/haproxy/haproxy.pid
+
+ # Stat socket
+ stats socket /run/haproxy/haproxy.sock mode 0660 level admin
+ # Stat timeout
+ stats timeout 10s
+ # Max connections
+ stats maxconn 10
+
+ # Certificate base dir
+ crt-base /etc/pki/tls/certs
+ # Private key base dir
+ key-base /etc/pki/tls/private
+ # Don\'t load extra files
+ ssl-load-extra-files none
+ # Disable SSL-v3 TLSv1.0 TLSv1.1 and TLS tickets
+ ssl-default-server-options ssl-min-ver TLSv1.2 no-tls-tickets
+ # Do not verify certificate
+ ssl-server-verify none
+ # Supported bind ciphers
+ #XXX: https://wiki.mozilla.org/Security/Server_Side_TLS#Recommended-configurations
+ ssl-default-bind-ciphers TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
+
+ # SSL/TLS session cache size
+ tune.ssl.cachesize 20000
+ # SSL/TLS session life time in cache
+ tune.ssl.lifetime 300
+ # SSL/TLS layer maximum passed bytes at a time
+ tune.ssl.maxrecord 0
+ # Diffie-Hellman ephemeral keys max size
+ tune.ssl.default-dh-param 2048
+ # Buffer size
+ tune.bufsize 16384
+ # Reserved buffer size
+ tune.maxrewrite 1024
+ # Max number of headers
+ tune.http.maxhdr 101
+
+
+# Default config
+defaults
+ # Use global log
+ log global
+
+ # Set balance mode
+ balance random
+ # Set http mode
+ mode http
+ # Set http keep alive mode
+ #XXX: https://cbonte.github.io/haproxy-dconv/2.3/configuration.html#4
+ option http-keep-alive
+ # Dont log empty line
+ option dontlognull
+ # Dissociate client from dead server
+ option redispatch
+
+ # Number of retries on connection failure
+ retries 3
+ # Max concurrent connections
+ maxconn 30000
+ # Max pending connections
+ backlog 30000
+
+ # Max time for a connection attempt
+ timeout connect 5s
+ # Max inactivitiy time on client side
+ timeout client 60s
+ # Max inactivitiy time on server side
+ timeout server 60s
+ # Max inactivitiy time on client and server for tunnels
+ timeout tunnel 3600s
+ # Max time for new request
+ timeout http-keep-alive 1s
+ # Max time for a complete http request
+ timeout http-request 15s
+ # Max time for a free slot
+ timeout queue 5s
+ # Duration for tarpitted connections
+ timeout tarpit 5s
+
+ # Error documents
+ errorfile 400 /usr/share/doc/haproxy/error/400.http
+ errorfile 403 /usr/share/doc/haproxy/error/403.http
+ errorfile 408 /usr/share/doc/haproxy/error/408.http
+ errorfile 500 /usr/share/doc/haproxy/error/500.http
+ errorfile 502 /usr/share/doc/haproxy/error/502.http
+ errorfile 503 /usr/share/doc/haproxy/error/503.http
+ errorfile 504 /usr/share/doc/haproxy/error/504.http
+
+
+# Default tcp frontend
+frontend tcp_default
+ # Set tcp mode
+ mode tcp
+ # Bind to 8000 port
+ bind :::8000
+ # Log disabled
+ no log
+ # Set tcp log
+ #option tcplog
+ # Set inspect delay
+ tcp-request inspect-delay 5s
+ # Wait for extension detection
+ #tcp-request content accept if { req.proto_http } or { req.ssl_hello_type 1 } or { req.ssl_ec_ext 1 }
+ tcp-request content accept if { req.proto_http } or { req.ssl_hello_type 1 }
+
+ # Send to https tcp backend
+ use_backend tcp_https if { req.ssl_hello_type 1 }
+
+ # Send to ec tcp backend
+ #use_backend tcp_ec if { req.ssl_ec_ext 1 }
+
+ # Send to OpenVPN backend
+ #acl openvpn payload(0,2) -m bin 003c
+ #tcp-request content accept if openvpn
+ #use_backend tcp_openvpn if openvpn
+
+ # Send to OpenSSH backend
+ #XXX: https://jonnyzzz.com/blog/2017/05/24/ssh-haproxy/
+ #XXX: https://issues.apache.org/jira/browse/SSHD-656
+ #acl ssh payload(0,7) -m str SSH-2.0
+ #tcp-request content accept if ssh
+ #use_backend tcp_ssh if ssh
+
+ # Send to http tcp backend (if { req.proto_http })
+ default_backend tcp_http
+
+
+# Http tcp backend
+backend tcp_http
+ # Set tcp mode
+ mode tcp
+ # Send to localhost without ssl with v2 proxy header
+ server haproxy 127.0.0.1:8080 no-ssl verify none send-proxy-v2
+
+
+# Https tcp backend
+backend tcp_https
+ # Set tcp mode
+ mode tcp
+ # Send to localhost without ssl with v2 proxy header
+ server haproxy 127.0.0.1:8443 no-ssl verify none send-proxy-v2-ssl
+
+
+# Default http frontend
+frontend http_default
+ # Bind to 8080 port
+ bind :::8080 accept-proxy
+ # Insert X-Forwarded-For header
+ option forwardfor
+ # Set http log format
+ option httplog
+ # Log enabled
+ log global
+
+ # Check if acme challenge
+ acl acme_challenge path_beg /.well-known/acme-challenge/
+
+ # Add X-Backend header
+ #http-response add-header X-Backend %[haproxy.backend_name]
+
+ # Advertise QUIC
+ #http-response add-header alt-svc \'h3=":443"; ma=3600\'
+ #http-after-response add-header alt-svc \'h3=":443"; ma=3600\'
+
+ # Remove server and x-powered-by headers
+ #http-after-response del-header server
+ #http-after-response del-header x-powered-by
+
+ # Redirect to https scheme when unsecure and not acme challenge
+ http-request redirect scheme https code 302 unless { ssl_fc } || acme_challenge
+
+ # Check if denied path
+ #XXX: use ,url_dec like in https://serverfault.com/questions/754752/block-specific-url-in-haproxy-url-encoding
+ #acl denied_path path_reg ^/(\.env|login|admin/|wp-login\.php|\.git/config)$
+ # Deny access on denied path
+ #http-request deny if denied_path
+
+ # Check if protected path
+ #acl protected_path path_reg ^/(contact|register)$
+ # Deny access on protected path
+ #http-request deny deny_status 503 if protected_path { method \'POST\' } { req.ver \'1.0\' }
+
+ # Store origin variable as txn
+ http-request set-var(txn.origin) req.hdr(Origin)
+ # Store host variable as txn
+ http-request set-var(txn.host) req.hdr(Host),field(1,:),lower
+ # Store proto variable as txn
+ http-request set-var(txn.proto) ssl_fc,iif(https,http)
+
+ # Set forwarded proto
+ http-request set-header X-Forwarded-Proto %[var(txn.proto)]
+ # Set forwarded port
+ http-request set-header X-Forwarded-Port %[dst_port]
+ # Set forwarded for
+ #http-request set-header X-Forwarded-For %[src]
+ # Set forwarded by
+ http-request set-header X-Forwarded-By %[dst]
+
+ # Set forwarded
+ #http-request set-header Forwarded by=%[dst]:%[dst_port];for=%[src]:%[src_port];host=%[var(txn.host)];proto=%[var(txn.proto)]
+ http-request set-header Forwarded by=%[dst]:%[dst_port];for=%[src]:%[src_port];proto=%[var(txn.proto)]
+
+ # Check if host is cdn.example.com
+ acl cdn var(txn.host) -m str cdn.example.com
+ # Check if cdn css path
+ acl cdn_css path_beg /css
+ # Check if cdn js path
+ acl cdn_js path_beg /js
+ # Check if haproxy status path
+ acl haproxy_status path_beg /haproxy-status
+ # Check if debug path
+ acl debug path_beg /debug
+
+ # Send to css backend if path start with /css
+ use_backend http_css if cdn cdn_css
+ # Send to js backend if path start with /js
+ use_backend http_js if cdn cdn_js
+ # Send to status backend if path start with /haproxy-status
+ use_backend http_status if haproxy_status
+ # Send to debug backend if path start with /debug
+ use_backend http_debug if debug
+
+ # Send to https backend
+ use_backend https_default if { ssl_fc }
+
+ # Send to default backend
+ default_backend http_default
+
+# Default https frontend
+#XXX: copy of upper one, just done to skip logs here
+frontend https_default
+ # Bind to 8443 tcp port as ssl
+ bind :::8443 ssl crt haproxy.pem alpn h2,http/1.1,http/1.0 accept-proxy
+ # Bind to 8443 udp port as ssl
+ #bind quic6@:::8443 ssl crt haproxy.pem alpn h3
+ # Insert X-Forwarded-For header
+ option forwardfor
+ # Set http log format
+ option httplog
+ # Log enabled
+ log global
+
+ # Check if acme challenge
+ acl acme_challenge path_beg /.well-known/acme-challenge/
+
+ # Add X-Backend header
+ #http-response add-header X-Backend %[haproxy.backend_name]
+
+ # Advertise QUIC
+ #http-response add-header alt-svc \'h3=":443"; ma=3600\'
+ #http-after-response add-header alt-svc \'h3=":443"; ma=3600\'
+
+ # Remove server and x-powered-by headers
+ #http-after-response del-header server
+ #http-after-response del-header x-powered-by
+
+ # Redirect to https scheme when unsecure and not acme challenge
+ http-request redirect scheme https code 302 unless { ssl_fc } || acme_challenge
+
+ # Check if denied path
+ #XXX: use ,url_dec like in https://serverfault.com/questions/754752/block-specific-url-in-haproxy-url-encoding
+ #acl denied_path path_reg ^/(\.env|login|admin/|wp-login\.php|\.git/config)$
+ # Deny access on denied path
+ #http-request deny if denied_path
+
+ # Check if protected path
+ #acl protected_path path_reg ^/(contact|register)$
+ # Deny access on protected path
+ #http-request deny deny_status 503 if protected_path { method \'POST\' } { req.ver \'1.0\' }
+
+ # Store origin variable as txn
+ http-request set-var(txn.origin) req.hdr(Origin)
+ # Store host variable as txn
+ http-request set-var(txn.host) req.hdr(Host),field(1,:),lower
+ # Store proto variable as txn
+ http-request set-var(txn.proto) ssl_fc,iif(https,http)
+
+ # Set forwarded proto
+ http-request set-header X-Forwarded-Proto %[var(txn.proto)]
+ # Set forwarded port
+ http-request set-header X-Forwarded-Port %[dst_port]
+ # Set forwarded for
+ #http-request set-header X-Forwarded-For %[src]
+ # Set forwarded by
+ http-request set-header X-Forwarded-By %[dst]
+
+ # Set forwarded
+ #http-request set-header Forwarded by=%[dst]:%[dst_port];for=%[src]:%[src_port];host=%[var(txn.host)];proto=%[var(txn.proto)]
+ http-request set-header Forwarded by=%[dst]:%[dst_port];for=%[src]:%[src_port];proto=%[var(txn.proto)]
+
+ # Check if host is cdn.example.com
+ acl cdn var(txn.host) -m str cdn.example.com
+ # Check if cdn css path
+ acl cdn_css path_beg /css
+ # Check if cdn js path
+ acl cdn_js path_beg /js
+ # Check if haproxy status path
+ acl haproxy_status path_beg /haproxy-status
+ # Check if debug path
+ acl debug path_beg /debug
+
+ # Send to css backend if path start with /css
+ use_backend http_css if cdn cdn_css
+ # Send to js backend if path start with /js
+ use_backend http_js if cdn cdn_js
+ # Send to status backend if path start with /haproxy-status
+ use_backend http_status if haproxy_status
+ # Send to debug backend if path start with /debug
+ use_backend http_debug if debug
+
+ # Send to https backend
+ use_backend https_default if { ssl_fc }
+
+ # Send to default backend
+ default_backend http_default
+
+
+# Debug http backend
+backend http_debug
+ # Check if trusted
+ acl trusted src 127.0.0.0/8 ::1
+ # Allow access from trusted only
+ http-request deny unless trusted
+ # Server without ssl or check
+ server debug 127.0.0.1:8090 no-ssl verify none
+
+
+# Default http backend
+backend http_default
+ # Enable check
+ option httpchk
+ # User server default
+ http-check connect default
+ # Send HEAD on / with protocol HTTP/1.1 for host example.com
+ http-check send meth HEAD uri / ver HTTP/1.1 hdr Host example.com
+ # Expect return code between 200 and 399
+ http-check expect status 200-399
+
+ # Insert header X-Server: apache
+ #http-response add-header X-Server apache
+
+ # Set compression algorithm
+ #compression algo gzip
+ # Enable compression for html, plain and css text types
+ #compression type text/html text/plain text/css
+
+ # Server with ssl and check without certificate verification
+ server apache 127.0.0.1:80 no-ssl verify none check #cookie apache
+
+
+# Default https backend
+backend https_default
+ # Enable check
+ option httpchk
+ # User server default
+ http-check connect default
+ # Send HEAD on / with protocol HTTP/1.1 for host example.com
+ http-check send meth HEAD uri / ver HTTP/1.1 hdr Host example.com
+ # Expect return code between 200 and 399
+ http-check expect status 200-399
+
+ # Insert header X-Server: apache
+ #http-response add-header X-Server apache
+
+ # Force HSTS for 5 minutes on domain and all subdomains
+ #http-response set-header Strict-Transport-Security max-age=300#;\ includeSubDomains#;\ preload
+
+ # Set compression algorithm
+ #compression algo gzip
+ # Enable compression for html, plain and css text types
+ #compression type text/html text/plain text/css
+
+ # Server with ssl and check without certificate verification
+ server apache 127.0.0.1:443 ssl verify none check #cookie apache
+
+
+# Css http backend
+backend http_css
+ # Enable check
+ option httpchk
+ # User server default
+ http-check connect default
+ # Send GET on /css/empty.css with protocol HTTP/1.1 for host cdn.example.com
+ http-check send meth GET uri /css/empty.css ver HTTP/1.1 hdr Host cdn.example.com
+ # Expect return code between 200 and 399
+ http-check expect status 200-399
+
+ # Server with check without ssl and certificate verification
+ server css 127.0.0.1:80 no-ssl verify none check
+
+
+# Js http backend
+backend http_js
+ # Enable check
+ option httpchk
+ # User server default
+ http-check connect default
+ # Send HEAD on /js/missing.js with protocol HTTP/1.1 for host cdn.example.com
+ http-check send meth HEAD uri /js/missing.js ver HTTP/1.1 hdr Host cdn.example.com
+ # Expect return code 404
+ http-check expect status 404
+
+ # Check if txn.origin start with https://cdn.example.com
+ acl cdn_origin var(txn.origin) -m beg https://cdn.example.com
+ # Send origin as ACAO
+ http-response set-header Access-Control-Allow-Origin %[var(txn.origin)] if cdn_origin
+ # Set ACMA for one day
+ http-response set-header Access-Control-Max-Age 86400 if cdn_origin
+
+ # Server with check without ssl and certificate verification
+ server js 127.0.0.1:80 no-ssl verify none check
+
+
+# Status user list
+userlist status
+ # Add user admin
+ user admin insecure-password ADMINPASSWORD
+ # Add user operator
+ user operator insecure-password OPERATORPASSWORD
+ # Assign admin in admin group
+ group admin users admin
+ # Assign operator and admin in operator group
+ group operator users operator,admin
+
+
+# Status http backend
+backend http_status
+ # Add operator acl
+ acl is_operator http_auth(status)
+ # Add admin acl
+ acl is_admin http_auth_group(status) admin
+ # Check if trusted
+ acl trusted src 127.0.0.0/8 ::1
+ # Enable stats
+ stats enable
+ # Set stats hook on /haproxy-status
+ stats uri /haproxy-status
+ # Set refresh time
+ stats refresh 10s
+ # Display legends
+ stats show-legends
+ # Display node
+ stats show-node
+ # Allow access from trusted or authentified operator only
+ #stats http-request auth unless trusted or is_operator
+ stats http-request auth unless trusted
+ # Activate admin interface from trusted or authentified admin only
+ #stats admin if is_admin
+```
+
+Espérons que cet article vous a été utile.'
]
]
],
Rapsys Git / blogbundle / blobdiff