Parallels Virtualization and Automation Software

SYMPTOMS

When you try to install or reinstall Plesk the following errors appear:

Hostname check failed

Unable to resolve hostname or establish network access to local host

RESOLUTION

To fix it you should specify full hostname of the server in the form of "hostname.domain.tld" instead of just "hostname". Also you should be able to ping the server by hostname. Please follow these steps to resolve this original issue:

1) Run the command below to specify a new hostname of the server. For example it will be "plesk.yourdomain.com":



2) Add the following line to the /etc/hosts file, when ip.address is a real IP address of the server:

ip.address.of.your.server plesk.yourdomain.com plesk

3) Change the following variable in the /etc/sysconfig/network file:

HOSTNAME=plesk.yourdomain.com

4) Restart network service



5) Please make sure that you are able to ping the server by the new hostname:



You should get the following output of ping command:

PING plesk.yourdomain.com (192.168.45.8) 56(84) bytes of data.
64 bytes from plesk.yourdomain.com (192.168.45.8): icmp_seq=1 ttl=64 time=0.086 ms
64 bytes from plesk.yourdomain.com (192.168.45.8): icmp_seq=1 ttl=64 time=0.086 ms
64 bytes from plesk.yourdomain.com (192.168.45.8): icmp_seq=1 ttl=64 time=0.086 ms
...


6) If ping doesn't work be sure that ICMP ECHO packets are allowed with:



If the server is still not accessible by the hostname then please make sure that firewall is not enabled. In this case you need to turn off any firewall on the server.