Cause The issue is caused by the fact that fully qualified domain name (FQDN) of the container can be not resolved to IP by the service container.To verify it run this command on the node: nslookup server.domain.tld where server.domain.tld is FQDN of the container. Resolution To fix the issue make sure that the service container [...]
Server hostname on the Plesk server should be changed through Plesk CP on the ‘Server’->‘Server preferences’ page with ‘Full hostname’ field. Fill the new hostname and push OK, Plesk will update it’s database and all needed configuration files such as /etc/hosts, /etc/sysconfig/network, /var/qmail/control/me, etc… Additionally, the hostname will need to be set by Switchlink support [...]
Usually, this can be done via the OS, but with Virtuozzo, usually this is reset at the next reboot. In order to change your Hostname, please submit the IP of your VPS and the required Hostname, and this will be set for you within the infrastructure.