I am using ubuntu 16.04 and mysql DB ,i configured DB for icinga2 server and i created separate user in database. somedays back i deleted that user from db now i am not able access icingaweb2 UI, Getting below error while trying to access to the link. All configured authentication methods failed. Please check the system log or Icinga Web 2 log for more information.
I followed the below link to install icinga2 server
Please Help.
I resolved the issue by re-creatinging a setup token in in the Icinga Web 2 by using bellow command
sudo icingacli setup token create i got some error's while creating setup token and it is easily resolved by using [1]: https://monitoring-portal.org/index.php?thread/40111-icingacli-does-not-work/