[ovirt-users] Can't connect "https://FQDN/ovirt-engine" after reinstall ovirt-engine

19.03.2019 on the server with the ovirt engine, I reinstalled the GUI and it seemed to delete the ovirt-engine, in any case, the installed ovirt-engine packages were not. I reinstalled the ovirt-engine package, but could not connect to the web interface. There are such errors in the /var/log/ovirt-engine/engine.log: 2019-03-20 11:37:12,660+09 INFO [org.ovirt.engine.core.extensions.mgr.ExtensionsManager] (ServerService Thread Pool -- 58) [] Initializing extension 'internal-authz' 2019-03-20 11:37:12,661+09 ERROR [org.ovirt.engine.extension.aaa.jdbc.binding.api.AuthzExtension] (ServerService Thread Pool -- 58) [] Unexpected Exception invoking: EXTENSION_INITIALIZE[e5ae1b7f-9104-4f23-a444-7b9175ff68d2] 2019-03-20 11:37:12,662+09 ERROR [org.ovirt.engine.core.extensions.mgr.ExtensionsManager] (ServerService Thread Pool -- 58) [] Error in activating extension 'internal-authz': Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. 2019-03-20 11:37:12,662+09 ERROR [org.ovirt.engine.core.sso.utils.SsoExtensionsManager] (ServerService Thread Pool -- 58) [] Could not initialize extension 'internal-authz'. Exception message is: Class: class org.ovirt.engine.core.extensions.mgr.ExtensionInvokeCommandFailedException ... 2019-03-20 11:37:13,046+09 ERROR [org.ovirt.engine.ui.frontend.server.dashboard.DashboardDataServlet] (ServerService Thread Pool -- 44) [] Could not access engine's DWH configuration table: java.sql.SQLException: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:/ENGINEDataSource ... 2019-03-20 11:37:13,049+09 WARN [org.ovirt.engine.ui.frontend.server.dashboard.DashboardDataServlet] (ServerService Thread Pool -- 44) [] No valid DWH configurations were found, assuming DWH database isn't setup. 2019-03-20 11:37:13,049+09 INFO [org.ovirt.engine.ui.frontend.server.dashboard.DashboardDataServlet] (ServerService Thread Pool -- 44) [] Dashboard DB query cache has been disabled. ovirt-engine-4.2.8.2-1 CentOS 7, 3.10.0-693.2.2.el7.x86_64 I have a backup file, but version 4.1. Recovering from it using engine-backup is impossible. I also have a backup /etc before deleting the ovirt-engine. Как мне восстановить ovirt-engine?