Hi guys,
I have a question, hopefully someone can answer it.
I am no expert on this, but I do hope someone can provide an answer or maybe a solution.
I downloaded the OpenVZ template for Debian 8 (debian-8.0-x86_64.tar.gz) and it installs, however I noticed after an hour it was still not continuing.
After checking, I noticed the following:
root 15893 15099 1 16:49 pts/0 00:00:00 /usr/bin/perl -w /usr/share/debconf/frontend /var/lib/dpkg/info/postfix.postinst abort-upgrade 2.11.3-1+deb8u2
root 15899 15893 0 16:49 pts/0 00:00:00 /usr/bin/perl -w /var/lib/dpkg/info/postfix.config configure 2.11.3-1+deb8u2
root 15903 15893 0 16:49 pts/0 00:00:00 dialog --backtitle Package configuration --title Postfix Configuration --output-fd 11 --textbox /tmp/komSLPJRxE 21 77
I killed those processes and it continued. Later on it was hanging again (or at least I thought so) and I saw the following processes:
6429 root 20 0 20852 3600 2088 S 0.0 0.0 0:00.01 postfix.config
6433 root 20 0 14252 1508 1080 S 0.0 0.0 0:00.00 dialog
I also killed those processes and installation was finished a few minutes later (without any other processes hanging).
Is there a way to avoid this by any chance? I checked the created container, but it had no issues. Everything was running except postfix.
I started the service postfix without problems.
root@ns1:/# service postfix status
● postfix.service - LSB: Postfix Mail Transport Agent
Loaded: loaded (/etc/init.d/postfix)
Drop-In: /run/systemd/generator/postfix.service.d
└─50-postfix-$mail-transport-agent.conf
Active: active (running) since Thu 2017-09-14 16:54:20 CEST; 15h ago
Process: 7433 ExecStart=/etc/init.d/postfix start (code=exited, status=0/SUCCESS)
CGroup: /system.slice/postfix.service
├─ 7539 /usr/lib/postfix/master
├─ 7541 qmgr -l -t unix -u
├─ 7544 tlsmgr -l -t unix -u -c
├─ 7545 anvil -l -t unix -u -c
├─23537 pickup -l -t unix -u -c
├─24175 smtpd -n smtp -t inet -u -c -o stress= -s 2
└─24176 proxymap -t unix -u
Now, I am by no means an expert with OpenVZ (our previous technician/developer passed away) so I am trying to learn as good as I can.
So, is there a way to avoid this during new creation of containers?
Sidenote; I just discovered when I wanted to install 'mc' (with apt-get install mc) that I was presented with a screen with "Postfix Configuration". I think this is the same screen the installation hangs on when creating the container? I now select the option "No configuration" and that's it.
So is there a way to avoid the "dialog setup" screen for this? So it will select no configuration by default?
Sorry for asking stupid questions, but I don't think killing those processes is the correct way. 
Thanks in advance for your time.
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