SOLVED!
I have been using a Zabbix 2.x server on Centos 7 for several years to monitor a small cluster. My colleagues asked me to set up another server for an IoT project.
I installed Zabbix 5.0 on Centos 8 from the zabbix.com repository. I have it running, logging its own server data via zabbix_agent, plus I have it monitoring theprototype IoT device for this project via zabbix_sender. All seems to be working fine--data, graphs, etc. I even have SELinux running.
I went to give my colleagues access to Zabbix. I created user_groups, host_groups, created users. User groups are tied to host groups, which are tied to hosts. I also created an unpriviliged user for myself, so I can see what a restricted user will see. The users have priviliges from Zabbix_User to Zabbix_Super_Administrator. All authentication is set to Internal.
None of the created users can log in. The only user who logs in successfully is Admin (whose password I changed a long time ago).
I don't think that it should make any difference that I have moved the link to zabbix from http://my.address/zabbix to http://my.address/something_else.
How do I troubleshoot from here? I have searched the Internet, but find no one with my problem (lots of people who don't capitalize Admin were found).
Ted Miller in Indiana
I have been using a Zabbix 2.x server on Centos 7 for several years to monitor a small cluster. My colleagues asked me to set up another server for an IoT project.
I installed Zabbix 5.0 on Centos 8 from the zabbix.com repository. I have it running, logging its own server data via zabbix_agent, plus I have it monitoring theprototype IoT device for this project via zabbix_sender. All seems to be working fine--data, graphs, etc. I even have SELinux running.

I went to give my colleagues access to Zabbix. I created user_groups, host_groups, created users. User groups are tied to host groups, which are tied to hosts. I also created an unpriviliged user for myself, so I can see what a restricted user will see. The users have priviliges from Zabbix_User to Zabbix_Super_Administrator. All authentication is set to Internal.
None of the created users can log in. The only user who logs in successfully is Admin (whose password I changed a long time ago).
I don't think that it should make any difference that I have moved the link to zabbix from http://my.address/zabbix to http://my.address/something_else.
How do I troubleshoot from here? I have searched the Internet, but find no one with my problem (lots of people who don't capitalize Admin were found).
Ted Miller in Indiana
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