I'm trying to setup haproxy acl, and it gives me 503: Service unavailable error, even redirect by port works fine. What am I doing wrong?
Appreciate any help.
This doesn't work by x.x.x.x/havana :
frontend https
bind *:80
mode http
option httpclose
acl otter-path path -i /havana/
use_backend otter-server if otter-path
This shows backend fine by x.x.x.x:82 :
frontend otter-server
bind *:82
option forwardfor
default_backend otter-server
Backend configuration:
backend otter-server
server otter2 192.168.0.15:8004
acl otter-path path -i /havana/
remove the last "/" i.e:
acl otter-path path -i /havana
your trying to hitx.x.x.x/havana but matching x.x.x.x/havana/
the problem was - it redirects not to backend, but to backend/havana, which doesn't exist.
Solution is to remove subpath after redirect, so it points exact to backend root
backend annotrack-mouse
balance roundrobin
http-request set-uri %[url,regsub(^/havana/mouse,/,)] if { path_beg /ha$
server annotrack-mouse 192.168.0.10:3000
option httpchk
Related
I have a collection of hosts that currently use just hostnames for reference, I'm switching over to using haproxy as an https proxy and would like to do a rewrite or redirect from http://server1/ to https://server1.internal.mydomain.com/.
# do a redirect for insecure connections
http-request redirect scheme https code 301 if !{ ssl_fc }
I have the HTTPS redirect/upgrade working as expected it's getting the rewrite/redirect configured properly that I'm hung up on, and I'm not really sure on the right verbiage to use when asking the question to get a relevant answer.
defaults
mode http
timeout client 10s
timeout connect 5s
timeout server 10s
timeout http-request 10s
frontend mydomain_frontend
# Listen for both http and https requests
bind *:80
bind *:443 ssl crt /etc/ssl/certs/Wildcard_mydomain_web_server.pem
# Setup conditional ACLs for hosts
acl server1_hosts hdr_beg(host) -i server1. server1 server1-2. server1-2
acl server2_hosts hdr_beg(host) -i server2. server2 server2-2. server2-2
# Setup Conditional ACLs for redirecting short/host names to FQDNs
acl is_internal hdr_sub(host) -i internal.mydomain.com
# I think the ACL is right, I'm just not sure how I would do the redirect, Is there string substitution?
http_request redirect location https://ORIGINALHOST.internal.mydomain.com if !is_internal
# do a redirect for insecure connections
http-request redirect scheme https code 301 if !{ ssl_fc }
use_backend server1_bend if server1_hosts
use_backend server2_bend if server2_hosts
default_backend server1_bend
# Setup DNS resolution
resolvers default
nameserver ns1 10.10.10.1:53
nameserver ns2 10.10.10.15:53
backend server1_bend
mode http
option forwardfor if-none
# server site 11.11.11.11:80 check resolvers default
server site server1.internal.mydomain.com:80 check resolvers default
backend server2_bend
mode http
option forwardfor if-none
# server site 10.10.10.10:80 check resolvers default
server site server2.internal.mydomain.com:80 check resolvers default
** EDIT **
I added an acl and a partial redirect statement to my example configuration, I think it is the beginning of what I am looking for but I don't know if it will work without string substitution in the redirect.
Updating the http-request line to use hdr(host) and pathq solved the issue for me.
http-request redirect location https://%[hdr(host)].internal.mydomain.com%[pathq] if !is_internal
hdr(host) - is the host from the URI minus the path and queries.
pathq - is the path including any queries. if we wanted just the path we could use just path.
The %[] pattern is important for triggering the substitution.
I have a condition where I need to pass whatever path is given in the frontend url to a backend redirect statement. E.g. Frontend https://example.com/abc/xyz to backend http://server-address:port/abc/xyz. I am using http redirect in the backend as of now. But now it has been requested to pass any path along with the frontend URL, to be appended to backend as well. I cannot use redirect on frontend as I need to use port 443 which is being used by other service. So I am use acl_path to point to a different backend, so I need to achieve this using backend itself. My frontend config is below-
frontend a
bind 10.10.10.10:443 ssl crt /etc/pki/org/key/somekey.key force-tlsv12 ciphers SOME-CIPHER
mode http
acl a_dev_app hdr_dom(host) -m beg a.dev.app.
acl b_dev_app hdr_dom(host) -m beg b.dev.app.
option http-server-close
use_backend a if a_dev_app
use_backend b if b_dev_app
Backend config-
backend b
balance roundrobin
cookie a-web-backend insert indirect nocache
http-request redirect location http://server-url:8081/b
mode http
option httpchk /b
server a-web-d01 http://server-url:8081 check maxconn 150 cookie a-web-d01
I have a HTTPS server and want to redirect the specific request based on the URL to my Backend server.
Something like this should do it (for HTTP):
frontend http
bind *:80
acl mpd path_end -i .mpd
acl test hdr(host) test.com www.test.com
use_backend internal if test mpd
backend internal
http-request set-path /path/folder%[path]
# for older versions
# reqirep ^([^\ :]*)\ \/(.+\/)*(.*)\ \1\ /path/to/folder/\3
server internal-1 internal:80 check
Two ACLs in the frontend select the right backend and the http-request (reqirep for older versions) command overwrites the original request path.
You might need to tweak it.
I'm testing a simple haproxy rule to make http://localhost/haproxy-dconv take me to http://cbonte.github.io/haproxy-dconv but it isn't working. 404 response seems to be from the site but the path isn't resolving.
frontend HTTP
mode http
bind *:80
acl url_dconv path_beg /haproxy-dconv
use_backend dconv-backend if url_dconv
backend dconv-backend
mode http
server dconv cbonte.github.io
Try this -
frontend HTTP
mode http
bind *:80
use_backend dconv-backend if { path_beg /haproxy-dconv/ }
backend dconv-backend
mode http
server dconv cbonte.github.io
Source: https://cbonte.github.io/haproxy-dconv/1.7/configuration.html#use_backend
That is because the Host header that is being sent is localhost, instead of cbonte.github.io. Add this to your backend:
http-request set-header Host cbonte.github.io
Also note that without the ending slash, you will get a 301, so make sure you send http://localhost/cbonte-dconv/ and fix your ACL.
You are using Haproxy in an incorrect way.
You need to match the ACL to get the URL between host and query parameter as you do:
acl url_dconv path_beg /haproxy-dconv
Then using this ACL to redirect from localhost if ACL is matched:
redirect prefix http://cbonte.github.io code 301 if url_dconv
But again this is more a conceptual problem of thinking redirect and matching path.
as mentioned in the title, i've set an Haproxy loadbalancer with a basic configuration, what i'd like to do is to always redirect request to the first server if the hostname matches x.domaine.com, but keep the balancing for domaine.com, is it possible with Haproxy, and if so how can i do it.
her's my configuration
listen webcluster *:80
mode http
balance roundrobin
option httpchk HEAD / HTTP/1.0
option forwardfor
cookie LSW_WEB insert
option httpclose
server bigSRV 192.168.1.10:8082 cookie LSW_WEB01 check
server miniSRV 192.168.2.10:8082 cookie LSW_WEB01 check
thanks in advence
after hours of digging i finally got it to work, so i'm going to answer my own question in case if samone have the same issue
generally i created a frontend that listen on port:80 and in which i defined 2 ACLs that uses the "if" statement to check the http header and then redirect to one of the backends defined, if no request matches the conditions, we redirect to default backend, here's how it's done (on haproxy.cfg) :
frontend http-proxy
bind *:80
acl is_www hdr(host) -i www.domain.com
acl is_x hdr(host) -i x.domain.com
use_backend clusterWWW if is_www
use_backend clusterX if is_x
default_backend clusterWWW
backend clusterWWW
server bigSRV 192.168.1.10:8082 cookie LSW_WEB01 check
server miniSRV 192.168.2.10:8082 cookie LSW_WEB01 check
backend clusterX
server bigSRV 192.168.1.10:8082 cookie LSW_WEB01 check