update readme informations

README.MD

@@ -5,14 +5,16 @@ This role deploys, configures and updates Zabbix. You can deploy test instance u
 `vagrant up`
 `ansible-playbook -b Playbooks/zabbix.yml`
 
-Then you can access Zabbix from your computer on http://192.168.33.27
+Then you can access Zabbix from your computer on http://192.168.33.27:8080
+
 The default login credentials for Zabbix are:
-Username: Admin
-Password: zabbix
+* Username: Admin
+* Password: zabbix
+
+⚠️ If mariadb is deployed on a different server than zabbix, then you have to do `mysql> set global log_bin_trust_function_creators = 1;` on your mariadb server, then deploy this role, and set it back to `mysql> set global log_bin_trust_function_creators = 0;`
 
 ## TODO
- - obviously better Readme file
- - Find better way that zabbix_installed: 'false' and  zabbix_proxy_installed: 'false'
+ - Find better way than zabbix_proxy_installed: 'false' (01.08.23: it not needed anymore, but needs more tests)
 
 
 ## CHANGELOG
@@ -20,3 +22,4 @@ Password: zabbix
     - Create readme file
     - Create Playbook
     - Create Vagrantfile
+- **01.08.23** - Fix role issues and update to v6.0