Questions tagged [haproxy]
HAProxy is an open source, very fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications. It is particularly suited for web sites crawling under very high loads while needing persistence or Layer7 processing.
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varnish ignore haproxy session affinity cookie
I have HAproxy behind varnish and I need use session affinity based on cookies.
In default configuration, varnish doesn't cache content when the cookie is present.
Anyone knows, how to tell varnish ...
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haproxy domain redirect not working
https://www.foo.bar is my main domain.
I want to redirect as well everything to bar.foo.
It works fine with http requests, but if I try https://bar.foo, I get a certificate error and the redirect ...
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Diagnosing bottleneck or limit in haproxy
I have haproxy in front of a high performance web app. At high volumes ~11k req/sec, the server seems to hit a limit or bottleneck at the haproxy level, while the underlying server can handle more ...
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HAProxy set acl with hosts from file
I'd like to migrate some 100+ sites from one server to another. Current plan is to gradually add an acl for each as they are moved to direct traffic to a new server.
Here is a simplified example
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HAProxy custom balancing rules based on http header
I need to set up a HAProxy to work in a following way. Let's say I have only 10 users and 10 backend servers. My goal is to stick each user to his own server based on custom http header user_id. It ...
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Ordering: 1. nginx 2. varnish 3. haproxy 4. webserver?
I've seen people recommend combining all of these in a flow, but they seem to have lots of overlapping features so I'd like to dig in to why you might want to pass through 3 different programs before ...
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HAProxy still return 502 after 120seconds
I have HAProxy configured that will forward my http requests to various services on internal ports.
One of this service may take some minutes to elaborate an answer, but after 120s HAProxy will still ...
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haproxy url_dec does not work with url_reg
I would like to use haproxy (1.7.5-2 2017/05/17, debian stretch stock) as a first line of defense against some possible attacks (e.g. SQL injection). The idea is that I create an acl in the frontend ...
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How to specify multiple ECDHE named curve in HAProxy?
I was browsing SSLab's server test page and found that CloudFront accepts multiple ECDHE named curve. Then I'm wondering can I do it on my HAProxy to maximize security and compatibility. It is ...
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HAProxy configuration for RabbitMQ
I have an API that sends messages to RabbitMQ.
I have a high availability RabbitMQ cluster behind HAProxy.
When I load test my API I start seeing lots of this:
Recovering from a network failure...
...
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How do I get HAProxy to not change the request URL?
I setting up HAProxy, task is very easy - redirection to two servers on port 8443. I did it. But I have one trouble when I write in browser address line my domain (xyz.domain.loc), it replace my ...
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Haproxy two processes are created by systemd
I have just compiled the latest Haproxy.
[root@proxy system]# haproxy -v
HA-Proxy version 1.8.8 2018/04/19
Copyright 2000-2018 Willy Tarreau <[email protected]>
My service file looks as ...
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Retrieve external IP in PHP behind Haproxy
I am using Haproxy to enable running a websocket server and Lighttpd web server on the same machine.
I want to retrieve the machines external IP address from the web application running on the ...
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HAProxy for Redis Sentinel: want BACKUP, not DOWN
I configured an HAProxy service for my Redis Cluster installation (3 nodes with Redis Sentinel managing the master delegation) and it works good: clients are redirected only to the master node and ...
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HAProxy use urls in server config?
Right now, my config looks like this:
server node1 10.20.x.y:80 check
server node2 10.20.x.y:80 check
server node3 10.20.x.y:80 check
What would be the best way to use URLS here instead of IPs?
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haproxy redirect keep querystring
Can I configure haproxy to redirect a url ending in /video1?autoplay=1 to a different url but keeping the querystring value?
e.g
http://domain.com/video1?autoplay=1
needs to redirect to
http://...
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HAProxy returns 503 (80 & 443 frontends + redirections managed by virtualhosts)
I've already looked for many posts, but no one solved my problem...
Let me explain the context :
3 containers on a dedicated server :
[10.173.223.10] haproxy
[10.173.223.11] Container_A (contains ...
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How calculate HAProxy roundrobin weights
Suppose I have two Redis database and want to distribute 70% of requests to DB1 and the other 30% to DB2. How can i calculate the weight parameter?
global
maxconn 20000
log 127.0.0.1 ...
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HAProxy health checks and changing server state
I've poured through lots of docs and Google searches but can't seem to find an answer. I'm using HAProxy with several servers that take a while to start--initial loads on my local VM are about a ...
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503 ALB health check HAProxy
I have a HAProxy behind Amazon ALB (Application Load Balancer)
http/80 health check is ok, but https/443 gives me 503, even though the site is available & ok
Here's what I see in HAProxy log:
4/...
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How do I match a wildcard host in ACL lists in HAproxy?
I have the following lines in my haproxy.conf:
acl valid_domains hdr(Host) -i mysite.com images.mysite.com docs.mysite.com admin.mysite.com
redirect location http://mysite.com/invalid_domain if !...
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Haproxy ACL rule for a particular domain
In my Haproxy config I have few ACL rule set. My haproxy.config looks like,
frontend incoming
bind *:80
acl grow_mydomain hdr(host) grow.mydoamin.com
use_backend grow_mydomain if ...
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TCP Balancer active/standby active/passive
I have two Servers, Server A,ServerB. running as TCP socket server.
I want to a active/standby or /active/passive failover.
that means:
1:Server A and Server B Running, route ALL connection to ...
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HaProxy to Tomcat over SSL
I am trying to configure HaProxy - Tomcat communication over HTTPS. That is, I need to configure SSL on both HaProxy and Tomcat. I started with Tomcat and it works fine on port 8443. I imported the ...
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haproxy redirect custom http traffic to a custom https port
I wish to redirect my custom http port traffic to custom https port based on the port I receive traffic on
I have multiple bind statements :
bind 1.2.3.4:7777
bind 1.2.3.4:8888
bind 1.2.3.4:9999 ...
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set-header for HAProxy when Content-Type" is missing from headers
I am using haproxy as a load balancer. For one of our back end services, example abc, if "Content-Type" is missing from headers, we need to add the header "Content-Type" with value as "application/...
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Multiple domains and SSL
It appears I've been way to focused on getting the Mulit Master replicating database system running and did not look much into the web server cluster and load balancer for it and SSL certifications..
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HaProxy giving - 503 Service Unavailable
I am using below configuring for performing loadbalancing for two Tomcat servers. And I configured HAProxy to perform SSL/TLS bridging/re-encryption.
#-------------------------------------------------...
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ELB with SSL pass through to either nginx or haproxy. Which is suited to handle more certs?
So I plan on having a ELB with SSL passthrough to either servers running haproxy or nginx.
I will be hosting potentially thousands of lets-encrypt certs.
Is either nginx or haproxy better at ...
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HAProxy - Add response header based on request host
I have a HAProxy set up to redirect traffic to a few internal servers.
What I'm trying to do is to set some response headers, based on the request host. Unfortunately I can't get it to work.
Current ...
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Use reqrep to change the path and then choose a backend based on that path
I have a need to transform the following url (not on the client/browser, but rather between the frontend and backend):
from:
http://myhost.com/opt-in/<some_long_guid>.html
to:
http://myhost....
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Block website scraper in Haproxy
I am using Haproxy. I want to block scrapers from my website. In the haproxy.cfg , I have created a rule.
acl blockedagent hdr_sub(user-agent) -i -f /etc/haproxy/badbots.lst
http-request deny if ...
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HAProxy served 503s and I don't know why
Yesterday, for around 10 minutes, my haproxy served a lot of 503 pages (directly from errorfile 503 /etc/haproxy/errors/503.http) and I don't know why. I have no health checks to my backends, so for ...
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Server's maxconn parameter in haproxy
I'm using HAProxy in production to balance queries to a series of server instances that can only process 1 query at a time (by our own decision). Knowing that I set the maxconn parameter in the server ...
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explanation of haproxy stats backend limit
The relevant part of my /etc/haproxy/haproxy.cfg is:
global
maxconn 30000
...
defaults
...
frontend frontend_for_all_sites
maxconn 22000
mode http
bind *:80
acl ...
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high-availability proxy with redirection based on location / ip-range
I've been using HAProxy for quite a while but recently got this issue that I don't really know how to implement/solve.
+---------------------------+
client-europe \ | HAProxy ...
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HAProxy-Apache encrypt connection
I have haproxy_server and apache_server in different datacenters, what is the best way to have encrypt connection between them?
It’s working with the certbotand with the following configuration:
...
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Simple redirect to HAproxy backend servers
I want to configure simple redirect with HAproxy.
Desired behaviour: HAProxy receives request to example.com or https://example.com and returns https webserver start page from servers list excluding ...
CommunityBot
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How can I make haproxy rewrite a url while retaining a variable that is the middle of the path?
I'm trying to redirect a url that looks like http://host/api/getThingByID/12345 to http://host/api/addr/12345/getThing
Unfortunately, regsub() does not support capture groups. I was going to try to ...
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How to preserve cookie in HAProxy?
We currently have a the following setup:
[Client] -> [haproxy] -> [Nginx] -> [App Servers]
Nginx currently sets the cookie affinity to the app servers by setting a cookie i.e: public-client....
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Can someone explain me what those haproxy directives mean?
I cannot find an easy answer for what "inter xs fall x rise x" directives mean.
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haproxy with nginx for webserver hosting
I have a nginx server which is serving different webservers on port 80 and 443 which works fine if i hit directly.
abc.com,
zyx.com
client ---->abc.com,zyx.com (on nginx)
Now i am trying to do ...
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Ubuntu: Automatically stop/start/restart dependent services
I have a small cluster of 2 x Apache/PHP servers running HAProxy, connecting to 2 x MySQL clustered servers. Sites are served from both Apache servers and DNS RR is relied upon for failover and crude ...
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Is it possible to make redundancy on HAProxy server?
I am going to use HAProxy as a load balancer that will balance requests on 3 application servers. But what if balancer server (HAProxy) fails at some point? I was thinking of cloning the first ...
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Is it possible to use multiple load balancers to redirect traffic to my application servers?
I'm new to load balancing and I'm wondering if it's possible to use multiple load balancers to redirect traffic to my application servers.
I don't really understand how this can be done. Shouldn't a ...
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haproxy http frontend , backend
I need to use haproxy for listening to port 80 and forward the request if it matches the role for that I did this this but I don't know how I can tell to use the prober back end
frontend httpfw
bind ...
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Add haproxy X-Forwarded-Host request header
I have a Haproxy instance that rewrites Host headers to internal ones using http-request set-header.
http-request set-header Host internal.example
However, I'd still like backends to have access to ...
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ha-proxy smtp source ip
I have haproxy in transparent mode to load balance two mail server. I have a problem with outgoing mail messages. The receiving party see that the IP of our mail server is the ip of haproxy and not ...
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HAProxy only working for localhost
Just set up HAProxy for the first time, as a single load balancer balancing 2 servers, each of which run Varnish and Nginx.
Here's the cfg file:
global
#uid 99
#gid 99
...
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HAproxy simple reverse proxy very slow
I'm currently setting up an HAproxy machine to act as a reverse proxy for a couple of websites. As the different machines are not physically connected I'm using OpenVPN to create a VPN between the ...
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