Mod_auth_cas ServiceTicket

[Ramakrishna G]

Hello all,

I am using Mod_auth_cas and HA- Cas server behind a loadbalancer.

Whenever I set CASValidateURL to one of the cas servers it works fine. But when I send to cas via NGINX server then it says "Unauthorized error" in browser.

My Nginx has 

 location /cas/login

 {

        proxy_pass  http://cas_server/cas/login;

 }

 location /cas/serviceValidate 

 {

        proxy_pass  http://cas_server/cas/serviceValidate;

 }

 location /secured 

 {

        proxy_pass  http://application_servers/api/services;

 }

My cas.conf has

LoadModule auth_cas_module modules/mod_auth_cas.so

CASCertificatePath /etc/pki/tls/certs/

CASCookiePath /var/cache/mod_auth_cas/

CASLoginURL http://localhost:81/cas/login // Works fine

CASValidateURL  http://localhost:81/cas/serviceValidate // Pointing to NGINX

#CASValidateURL  http://localhost:8080/cas/serviceValidate // Pointing to one of the cas server - Works fine 

CASDebug On

LogLevel debug

No error as well. I am not sure where I am going wrong. 

Can anyone help please.

Thanks

Ramakrishna G

[Ray Bon]

Ramakrishna,

This sounds like slow ticket replication. Does redis sentinel have multiple stores?

If you set nginx to be sticky, will validation succeed?

Check your cas logs to see if the ticket is being validated. I think the cas client tries to validate the ticket using https.

You could simplify your config:

location /cas

{

proxy_pass http://cas.server/cas

}

Ray

-- 
Ray Bon
Programmer analyst
Development Services, University Systems
2507218831 | CLE 019 | rb...@uvic.ca

[Ramakrishna G]

Ray,

Can you please elaborate this "If you set nginx to be sticky, will validation succeed?" Any example for this.

Also in cas logs I could see ticket was not validated when I go through NGINX

Thanks

Ramakrishna G

--
- Website: https://apereo.github.io/cas
- Gitter Chatroom: https://gitter.im/apereo/cas
- List Guidelines: https://goo.gl/1VRrw7
- Contributions: https://goo.gl/mh7qDG
---
You received this message because you are subscribed to the Google Groups "CAS Community" group.
To unsubscribe from this group and stop receiving emails from it, send an email to cas-user+unsubscribe@apereo.org.
To view this discussion on the web visit https://groups.google.com/a/apereo.org/d/msgid/cas-user/1533317546.2860.92.camel%40uvic.ca.

[Ramakrishna G]

Do you mean to say ip-hash as load balancing mechnaism. I have tried that as well. But No Luck

Thanks

Ramakrishna G

To unsubscribe from this group and stop receiving emails from it, send an email to cas-user+u...@apereo.org.

[Ray Bon]

Ramakrishna,

This is what I set on my test machine:

    upstream casssl {

                server localhost:8491;

                server localhost:8492 backup;

    }

        location /cas {

            proxy_pass   https://casssl;

        }

The backup means that all requests go through 8491 unless it is down. I think there are other ways of setting the load balance.

Is it a failed validation or does the ticket never arrive for validation? What are the log messages?

Ray

[Ramakrishna G]

Thanks for the hint & instant responses Ray.

Regards

Ramakrishna G

+91 8792114542

To unsubscribe from this group and stop receiving emails from it, send an email to cas-user+u...@apereo.org.

To view this discussion on the web visit https://groups.google.com/a/apereo.org/d/msgid/cas-user/1533317546.2860.92.camel%40uvic.ca.

-- 
Ray Bon
Programmer analyst
Development Services, University Systems
2507218831 | CLE 019 | rb...@uvic.ca

--
- Website: https://apereo.github.io/cas
- Gitter Chatroom: https://gitter.im/apereo/cas
- List Guidelines: https://goo.gl/1VRrw7
- Contributions: https://goo.gl/mh7qDG
---
You received this message because you are subscribed to the Google Groups "CAS Community" group.
To unsubscribe from this group and stop receiving emails from it, send an email to cas-user+unsubscribe@apereo.org.

To view this discussion on the web visit https://groups.google.com/a/apereo.org/d/msgid/cas-user/1533325036.2860.105.camel%40uvic.ca.