Zabbix 6.0.7 - Cannot bind to LDAP server

[AndWei]

Problem:
Cannot login with Active Directory credentials to Zabbix 6
Testing the LDAP connection via the web interface results in "Cannot bind to LDAP server."

What was done:
Export of the Zabbix 5 database with mysqldump on the old server
Import of the Dump to the new server

6539:20220726:092843.317 completed 100% of database upgrade
6539:20220726:092843.317 database upgrade fully completed
6539:20220726:092843.318 database could be upgraded to use primary keys in history tables
6539:20220726:092843.320 database is not upgraded to use double precision values

The LDAP connection data is visible in the web configuration afterwards, a green dot is attached to the LDAP settings tab

I have seeen a similar bug reported (ZBXNEXT-7769) but it was for docker images and is now closed. Any help would be appreciated.

Current setup:

Old server	New server
CentOS Linux release 7.9.2009	Oracle Linux Server release 9.0
zabbix-release-5.0-1.el7.noarch zabbix-web-mysql-scl-5.0.26-1.el7.noarch zabbix-agent-5.0.26-1.el7.x86_64 zabbix-web-5.0.26-1.el7.noarch zabbix-server-mysql-5.0.26-1.el7.x86_64 zabbix-cli-2.2.1-1.el7.noarch zabbix-get-5.0.26-1.el7.x86_64 zabbix-web-deps-scl-5.0.26-1.el7.noarch	zabbix-release-6.0-3.el9.noarch zabbix-web-6.0.7-1.el9.noarch zabbix-web-mysql-6.0.7-1.el9.noarch zabbix-web-deps-6.0.7-1.el9.noarch zabbix-server-mysql-6.0.7-1.el9.x86_64 zabbix-apache-conf-6.0.7-1.el9.noarch zabbix-sql-scripts-6.0.7-1.el9.noarch zabbix-selinux-policy-6.0.7-1.el9.x86_64 zabbix-agent-6.0.7-1.el9.x86_64
rh-php72-php-xml-7.2.24-1.el7.x86_64 rh-php72-php-process-7.2.24-1.el7.x86_64 rh-php72-php-mbstring-7.2.24-1.el7.x86_64 rh-php72-php-fpm-7.2.24-1.el7.x86_64 rh-php72-php-zip-7.2.24-1.el7.x86_64 rh-php72-php-bcmath-7.2.24-1.el7.x86_64 rh-php72-php-mysqlnd-7.2.24-1.el7.x86_64 rh-php72-1-2.el7.x86_64 rh-php72-php-json-7.2.24-1.el7.x86_64 rh-php72-php-cli-7.2.24-1.el7.x86_64 rh-php72-php-pdo-7.2.24-1.el7.x86_64 rh-php72-php-pear-1.10.5-1.el7.noarch rh-php72-php-7.2.24-1.el7.x86_64 rh-php72-runtime-1-2.el7.x86_64 rh-php72-php-gd-7.2.24-1.el7.x86_64 rh-php72-php-common-7.2.24-1.el7.x86_64 rh-php72-php-ldap-7.2.24-1.el7.x86_64	php-common-8.0.13-1.el9.x86_64 php-bcmath-8.0.13-1.el9.x86_64 php-ldap-8.0.13-1.el9.x86_64 php-pdo-8.0.13-1.el9.x86_64 php-mysqlnd-8.0.13-1.el9.x86_64 php-xml-8.0.13-1.el9.x86_64 php-mbstring-8.0.13-1.el9.x86_64 php-fpm-8.0.13-1.el9.x86_64 php-gd-8.0.13-1.el9.x86_64

[AndWei]

When i set selinux to disabled, it works (both in /etc/selinux/config and adding the boot parameter selinux=0). Tried it after reading in the Zabbix subreddit:

https://www.reddit.com/r/zabbix/comm...uthentication/


This Stackoverflow post suggests, that quote 'httpd_can_network_connect was set to off.' Maybe that helps someone.

I will leave selinux disabled for the time being.