undefined symbol: SSL_CTX_set_verify_depth

[Infosys Raleigh]

Hello everyone,

We are trying to set up a CAS Client on an ec2, running ubuntu 16LTS, using the mod_auth_cas project. we have gotten everything downloaded, complied, built and installed as per the README but when we try to start with:

 

sudo systemctl enable apache2 

we get:

 

undefined symbol: SSL_CTX_set_verify_depth

from the mod_auth_cas.so 

We are not sure what information would be useful, so feel free to ask for anything you might need and we will try to provide. 

[Infosys Raleigh]

I am adding the error log: 
Jan 24 18:08:51 ip-172-31-0-113 systemd[1]: Starting LSB: Apache2 web server...
-- Subject: Unit apache2.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit apache2.service has begun starting up.
Jan 24 18:08:51 ip-172-31-0-113 apache2[5211]: * Starting Apache httpd web server apache2
Jan 24 18:08:51 ip-172-31-0-113 apache2[5211]: *
Jan 24 18:08:51 ip-172-31-0-113 apache2[5211]: * The apache2 configtest failed.
Jan 24 18:08:51 ip-172-31-0-113 apache2[5211]: Output of config test was:
Jan 24 18:08:51 ip-172-31-0-113 apache2[5211]: apache2: Syntax error on line 140 of /etc/apache2/apache2.conf: Syntax error on line 1 of /etc/apache2/mods-enabled/auth_cas_module.load: Cannot load /usr/lib/apache2/modules/mod_auth_cas.so into server: /usr/lib/apache2/modules/mod_auth_cas.so: undefined symbol: SSL_CTX_set_verify_depthJan 24 18:08:51 ip-172-31-0-113 apache2[5211]: Action 'configtest' failed.
Jan 24 18:08:51 ip-172-31-0-113 apache2[5211]: The Apache error log may have more information.
Jan 24 18:08:51 ip-172-31-0-113 systemd[1]: apache2.service: Control process exited, code=exited status=1
Jan 24 18:08:51 ip-172-31-0-113 sudo[5208]: pam_unix(sudo:session): session closed for user root
Jan 24 18:08:51 ip-172-31-0-113 systemd[1]: Failed to start LSB: Apache2 web server.

[dev-group]

We found a solution. We found an apt package that we could install instead of rolling our own.

[Axhay Harihar Patel]

Is there any recommendation on the instance type to use for CAS 6.0.x in AWS. We are moving CAS (ver 6.0.4) to AWS and wondering if there is any benchmark on recommendation for the instance type to use. We are currently using M5d.xlarge instance type when building AWS CAS test servers but would like to explore with the community if there is any other EC2 instance type they have used successfully which worked well for them. Attaching the PDF for the instance types. 

Thank you,

Axhay Patel