LDAPS certificate issue with Google Workspace LDAP

I’m trying to use LDAP authentication with Google Workspace’s LDAP but haven’t been able to make it work.

Google provides .crt and .key files, which I copied to my Redmine instance and ran update-ca-certificates, successfully adding the certificates.

When I test LDAPS, it shows state=error: certificate verify failed (self-signed certificate). I tried disabling certificate verification, which changes the test state to successful, but I still can’t log in.

Does anyone know the proper configuration for setting up LDAP with Google Workspace? I might be misconfiguring the Base DN or the filter.

Any help would be appreciated!

Replies (1)

RE: LDAPS certificate issue with Google Workspace LDAP - Added by Lionel BAKALA 1 day ago

Hi Tolga,

To assist in troubleshooting your issue, I have a question: Can you query your Google Workspace LDAP directory from your Redmine instance using command like ?

ldapsearch -H ldaps://ldap.google.com -D "uid=admin,ou=users,dc=example,dc=com" -W -b "dc=example,dc=com"

This will help verify that LDAPS connectivity and authentication are functioning correctly from the Redmine host, and whether any certificates are required for the connection.

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