[Users] Hostname issue on CentOS 7.x

Jean-Pierre Abboud jpabboud at gotekky.com
Mon Nov 14 13:49:53 PST 2016


Ok the script is working! Thank you Dmitry!


> On Nov 14, 2016, at 3:06 PM, Dmitry Konstantinov <barmaley at barmaley.net> wrote:
> 
> We 'fix' it from system-wide vps.mount
> The part that does the fix:
> 
> *****
> if [[ "${OSTEMPLATE}" =~ "centos-7"  && -n "${HOSTNAME}" ]]; then
>    echo "OVZHOSTNAME=\"${HOSTNAME}\"" > ${VE_ROOT}/etc/sysconfig/ovzhostname
>    if [[ ! -f ${VE_ROOT}/etc/systemd/system/ovzhostname.service ]]; then
>        cat << XXTAGXX > ${VE_ROOT}/etc/systemd/system/ovzhostname.service
> [Unit]
> Description=hostname fix for cpanel
> After=network.target
> Before=cpanel.service
> 
> [Service]
> Type=oneshot
> ExecStart=/etc/init.d/ovzhostname
> 
> [Install]
> WantedBy=multi-user.target
> XXTAGXX
>    fi
> 
>    if [[ ! -L ${VE_ROOT}/etc/systemd/system/multi-user.target.wants/ovzhostname.service ]]; then
>        ln -s /etc/systemd/system/ovzhostname.service \
>            ${VE_ROOT}/etc/systemd/system/multi-user.target.wants/ovzhostname.service
>    fi
> 
>    if [[ ! -f ${VE_ROOT}/etc/init.d/ovzhostname ]]; then
>        cat << XXTAGXX > ${VE_ROOT}/etc/init.d/ovzhostname
> #!/bin/bash
> 
> OVZHOSTNAME=""
> 
> if [[ -f /etc/sysconfig/ovzhostname ]]; then
>    source /etc/sysconfig/ovzhostname
>    if [[ -n "\${OVZHOSTNAME}" ]]; then
>        echo "\${OVZHOSTNAME}" > /etc/hostname
>        hostname "\${OVZHOSTNAME}"
>        hostnamectl set-hostname "\${OVZHOSTNAME}"
>    fi
> fi
> XXTAGXX
>        chmod 0755 ${VE_ROOT}/etc/init.d/ovzhostname
>    fi
> fi
> *****
> 
> On Fri, 11 Nov 2016 04:33:18 +0000
> Jean-Pierre Abboud <jpabboud at gotekky.com> 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 at 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 at server1 network-scripts]# cat /etc/hostname
>> server1
>> 
>> [root at server1 network-scripts]# cat /proc/sys/kernel/hostname
>> server1
>> 
>> [root at 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 at 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.
>> 
>> 
>> Thank you!
>> 
>> --
>> Jean-Pierre Abboud
>> Account Manager / Gotekky
>> 888.915.4400 / 514.316.1885
>> Email: jpabboud at gotekky.com
>> 
>> 
>> _______________________________________________
>> Users mailing list
>> Users at openvz.org
>> https://lists.openvz.org/mailman/listinfo/users
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