hostname -f shows the correct hostname, however CentOS 7.x running on KVM is
showing FQDN even using the regular hostname command without the -f switch.
cPanel also reported the same thing when I asked support.
--
Jean-Pierre Abboud
Account Manager / Gotekky
888.915.4400 / 514.316.1885
Email: jpabb...@gotekky.com
> On Nov 11, 2016, at 2:13 AM, Kir Kolyshkin <k...@virtuozzo.com> wrote:
>
> On 11/10/2016 08:33 PM, Jean-Pierre Abboud wrote:
>> Hello everyone,
>>
>> We’re facing an issue on many CentOS 7.x containers running cPanel. Clients
>> are getting emails saying that the hostnames are not valid, for example it
>> will show server1 instead of the fully qualified domain name
>> server1.domain.com
>>
>> I have tried changing the hostname via cPanel or even manually but after
>> rebooting it goes back to server1
>>
>> The container’s openvz config does contain the appropriate HOSTNAME line
>> HOSTNAME=“server1.domain.com"
>>
>> [root@server1 network-scripts]# cat /etc/hosts
>> 127.0.0.1 localhost.localdomain localhost localhost4.localdomain4 localhost4
>> # Auto-generated hostname. Please do not remove this comment.
>> 104.245.200.10 server1.domain.com localhost6 localhost6.localdomain6
>> server1 localhost.localdomain
>> ::1 localhost
>>
>> [root@server1 network-scripts]# cat /etc/hostname
>> server1
>>
>> [root@server1 network-scripts]# cat /proc/sys/kernel/hostname
>> server1
>>
>> [root@server1 network-scripts]# cat /etc/sysconfig/network
>> NETWORKING="yes"
>> GATEWAYDEV="venet0"
>> NETWORKING_IPV6="yes"
>> IPV6_DEFAULTDEV="venet0"
>> HOSTNAME=server1.domain.com
>> DOMAINNAME=domain.com
>>
>> [root@server1 network-scripts]# cat /etc/redhat-release
>> CentOS Linux release 7.2.1511 (Core)
>>
>> Please note that I replaced the client’s domain and IP for privacy reasons.
>
> It looks like a correct behaviour to me, since hostname(5)
> man page says that hostname should not contain dots,
> i.e. not be FQDN, so vzctl strips the domain name out of it.
>
> What does "hostname -f" shows? Note -f flag means FQDN
> ("fully qualified domain name", i.e. with domain).
>
> Kir
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