haproxy match various conditions in use_backend

Question

I'm trying to match various conditions inside one backend, like this:

acl rule1 hdr_dom(host) -i ext1
acl rule2 utl_beg /img
default_backend back-server-http if rule1 and rule2

but, how can I put this "and" between the two rules?

An other related question: https://serverfault.com/questions/768575/haproxy-acl-multiple-or-conditions — rfmoz, Jul 06 '20 at 10:17

score 25 · Accepted Answer · edited Jun 12 '13 at 21:21

25

Yes, this is the solution:

acl rule1  hdr_dom(host) -i www.uno.es  hdr_dom(host) -i www.one.com
use_backend uno.com if rule1

edited Jun 12 '13 at 21:21

Gabriel Hurley

answered Dec 10 '12 at 16:21

rfmoz

1

How can a request have both hosts? It seems impossible that this ACL could ever be matched. – UpTheCreek Mar 05 '15 at 10:32
Yes, you can, its the same if you add contidions to the same acl inside different lines. – rfmoz Apr 10 '15 at 09:54
1

the answer example doesn't match the question example: for the question would it be something like this: `acl rule1 hdr_dom(host) -i ext1 utl_beg /img`? – Thayne Jun 01 '15 at 23:30
@Thayne - see the examples here: https://github.com/langpavel/haproxy-doc/blob/master/version-1-4-19/tex/gen_07-07--using-acls-to-form-conditions.tex. Given what you've written I'd expect that to work. – slm Jun 10 '15 at 00:30

score 21 · Answer 2 · edited Mar 24 '15 at 11:00

21

You don't need to use the word "and" between the two rules. It's implicit.

edited Mar 24 '15 at 11:00

Jabberwocky

answered Aug 06 '12 at 02:49

score -1 · Answer 3 · answered Mar 12 '21 at 11:25

-1

I think the below syntax will do the trick (check this link HAProxy - basic authentication for backend server)

acl rule1 hdr_dom(host) -i ext1
acl rule2 utl_beg /img
default_backend back-server-http if rule1  rule2

answered Mar 12 '21 at 11:25

devops-admin

'default_backend' cannot handle unexpected argument 'if'. – Constantin Oct 30 '21 at 21:28

3 Answers3