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Perttu Ehn
Perttu Ehn

Posted on • Originally published at web.archive.org

Create new base box for Vagrant development

#vagrant #scientificlinux #localdev #drupal

This blog post has been initially released in Exove's Tech blog, but can only be found on the Archive Org's magnificient webarchive since the blog has disappeared after the publication day.

As turned out, the "first post" ended up being the only one, not a serie of blog posts.

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This is a first post of series "Get your local [Drupal] development environment in decent shape". Although this is targeted to Drupal developers, first three parts are fully CMS agnostic. So you could use this as a basis to get any other - say Wordpress, Ez or any other PHP based CMS developing platform up and running.

Distro of our choise is Scientific Linux 7

We at http://www.exove.com are using http://scientificlinux.org/ [SL7] as development environment distribution. It is a close relative to Red Hat Entrerprice Linux (and therefore also Centos et.al.) and there are no significant differences to Red Hat used so often as production site platform. It is fairly lightweight and as easy to configure as any Red Hat derivative.

Here you can find a list of Scientific Linux source mirrors. Pick the closest one to you instad of blindly copy-pasting all URL in this blog post. It is really not that difficult.

For this blog post's purpose the closest mirror is the one in Finland, so URL's are something like this: http://www.nic.funet.fi/pub/mirrors/scientificlinux.org/scientific/7/x86_64/iso/

Tools you should have installed

These instructions assume you are using

  • OS X (10.9 or newer should be fine)
  • VirtualBox 5.0.0 or newer
  • Vagrant

Note that OS X El Capitano works best with VirtualBox 5 and Vagrant 1.7.3 or newer.

Download a Scientific Linux installation media

Start by downloading SL7 installation media. Netinst-image is the smallest and all we need here. Other images have a lot of stuff we have no need for.

http://www.nic.funet.fi/pub/mirrors/scientificlinux.org/scientific/7/x86_64/iso/SL-7.1-x86_64-netinst.iso

NOTE Check SHA1, SHA256 before using any such image.

Set up VirtualBox

Launch VirtualBox and start by creating new virtual machine instance with name 'SL7-server'. Do not power it up, but configure it's settings first (CMD + S sould bring up the configure options).

Turn off some unnecessary hardware options and configure network and "insert" the installation media:

  1. General / Advanced / Shared clipboard
  • Set to none
  1. General / Advanced / Drag'n'drop
  • Set to none
  1. System / Motherboard / Pointing device:
  • Use PS/2 (instead of available USB -options)
  1. Audio
  • Set disabled
  1. Network - Adapter 1
  • Use NAT
  1. Network - Adapter 1 / Advanced / Port Forwarding
  • Set forwarding SSH 2222 -> 22
  1. Network - Adapter 2,3,4
  • Set disabled
  1. Ports / USB
  • Enable USB Controller -> unchecked
  1. SerialPort
  • Enable Serial port -> unchecked
  1. Storage
  • Add installation media to DVD slot

Install SL7 server in virtual machine

Power up the machine and start regular installation using UI provided by VirtualBox. These setting may vary depending your needs. For example most people might not set timezone and keyboard like this.

  1. Set used keyboards (feel free to skip this part)
  • Finnish Macintosh
  • English US
  1. Set timezone (feel free to skip this part)
  • Europe/Helsinki

  1. Enable networking (disabled by default)

  2. Set installation source to the closest mirror to you

  1. Choose installation type
  • We'll install now a minimal server with only limited amount of packages to
  • keep the box small.
  1. Install

Start installation, and...

  1. During the OS installation process (which will take a few minutes)
  • Set root passwd to vagrant
  • Add new user vagrant with password vagrant
  1. REBOOT

The installation media will be "ejected" automatically.

Install/remove packages

Now you can install the tools you wish to have already in place in the base box. We'll add only two smallish packages, rest of the packages will be taken care of our Ansible roles when setting up the actual vagrant box instance.

Remove unnecssary packages

  1. Stop and remove Postfix [optional]

systemctl stop postfix yum remove postfix

Install other packages

  1. Install packages nano and wget (not required by any means, just my personally preferred tools over other options) [optional]

    yum install nano bash-completion wget

  2. Ensure networking in on at boot

    grep -Hn '^ONBOOT' /etc/sysconfig/network-scripts/*

This should result to 2 files witn ONBOOT="yes" -values. If you see line /etc/sysconfig/network-scripts/ifcfg-enp0s3:ONBOOT="no", edit the file:

nano /etc/sysconfig/network-scripts/ifofg-enp0s3`
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..and check again that the value is now changed.

grep -Hn '^ONBOOT' /etc/sysconfig/network-scripts/*
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  1. Pass Grub 2 bootloader faster [optional]

Set timeout 1 second, as default seems to be 5 seconds. This is changed only to make booting 4 seconds faster.

sed -i 's/GRUB_TIMEOUT=[\d]{1,2}/GRUB_TIMEOUT=1/' /etc/default/grub`
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Compile Grub config using grub2-mkconfigtool:

grub2-mkconfig -o /boot/grub2/grub.cfg
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  1. Turn SELinux off [optional but recommended]

As this box is a base for a local development vagrant box, there is no need to have SELinux enabled. It will most probably just make your life more difficult.

Make sure to reboot after this; init 6 will do it for you, though.

sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config init 6`

  1. Add sudo-permission to vagrant user

echo 'vagrant ALL=(ALL) NOPASSWD:ALL' > /etc/sudoers.d/vagrant

  1. Update sshd-configuration where needed

nano /etc/ssh/sshd_config

Port 22 (or have Port -setting disabled by adding a # in front of the line)

PubKeyAuthentication yes
AuthorizedKeysFile .ssh/authorized_keys
PermitEmptyPasswords no`
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Restart ssh daemon:

service sshd restart`
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  1. Install vagrant insecure key
  mkdir -p /home/vagrant/.ssh
  wget --no-check-certificate https://raw.github.com/mitchellh/vagrant/master/keys/vagrant.pub -O /home/vagrant/.ssh/authorized_keys
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Ensure we have the correct permissions set

chmod 0700 /home/vagrant/.ssh
chmod 0600 /home/vagrant/.ssh/authorized_keys
chown -R vagrant:vagrant /home/vagrant/.ssh`
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Test ssh'ing as vagrant-user from you current root session (create keys, test access, delete keys and known_hosts etc. after testing):

ssh -v vagrant@localhost
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After succesful login exit and remove (all) keys from root's known_hosts -file:

echo > /root/.ssh/known_hosts
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  1. Disbable tty -requirement for sudoers

visudo

Comment out requiretty -setting changing this line

Defaults requiretty
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to

#Defaults requiretty
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NOTE You may use simpler text editor nano instad of vim if you change your EDITOR value with:

EDITOR=$(which nano)
export EDITOR`
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This change is temporary and is valid only within current shell session.

  1. Install DKMS -package required by VirtualBox Guest additions

..as described in http://www.linuxquestions.org/questions/linux-software-2/installing-dkms-on-rhel-7-0-a-4175510666/#post5239266

Closest download mirrors can be found in from http://rpmfind.net//linux/RPM/epel/7/x86_64/d/dkms-2.2.0.3-30.git.7c3e7c5.el7.noarch.html.

Downlaod DKMS pacakge:

wget ftp://rpmfind.net/linux/epel/7/x86_64/d/dkms-2.2.0.3-30.git.7c3e7c5.el7.noarch.rpm
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Install DKMS requirements (these will install also 30+ other packages):

yum install gcc kernel-devel kernel-headers
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Install the local DKMS package you've just downloaded:

yum localinstall dkms-2.2.0.3-30.git.7c3e7c5.el7.noarch.rpm --nogpgcheck
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Install Development Tools (this will install also 60+ other packages):

yum groupinstall 'Development Tools'
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Add/update kernel for VBoxGuestAdditions. This should install kernel version 3.10.0-229 or newer:

yum update kernel
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  1. Install VirtualBox guest additions:

.. as described in http://download.virtualbox.org/virtualbox/5.0.0/.

  wget http://download.virtualbox.org/virtualbox/5.0.0/VBoxGuestAdditions_5.0.0.iso
  sudo mkdir /media/VBoxGuestAdditions
  sudo mount -o loop,ro VBoxGuestAdditions_4.3.8.iso /media/VBoxGuestAdditions
  /media/VBoxGuestAdditions/VBoxLinuxAdditions.run
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  1. Correct missing locale -settings [optional]

Add locale -settings to avoid repeating error message when logging through ssh to your box (as in every single time you use vagrant ssh -command). Edit this file:

nano /etc/environments
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Add these lines:

LANG=en_US.utf-8
LC_ALL=en_US.utf-8
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Save and exit.

  1. Give box a hostname [optional]

Use nmcli tool to to set a more desctiptive hostname (default is localhost.localdomain)

nmcli general hostname sl7-dev.local
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Check that changes was made with

nmcli general hostname`
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REBOOT NOW:

init 6
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  1. Finalize and cleanup

Ensure all packages are up to date, once more.

yum update
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Clean up yum cache

yum clean all
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  1. Minimize the size of VirtualBox virtual machine file

Run this command to 1st fill up the virtual drive with an empty file and then removing the empty file. It will help VirtualBox to minimize the virtual drive.

dd if=/dev/zero of=/EMPTY bs=1M
rm -f /EMPTY
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  1. Clean up bash history [optional]

Empty bash history and exit. Note that last session history is saved when exiting to the history file, so you might need to do this twice (and log out in between) to get empty history file:

echo > .bash_history

exit`
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Package the virtual machine for vagrant -use

Package newly baked Scientific Linux ready for Vagrant and do a test run.

Assuming VBox server name SL7-server, change accoringly

vagrant box remove test-sl7 2&>/dev/null rm package.box 2&>/dev/null vagrant package --base SL7-server vagrant box add test-sl7 package.box mkdir test cd test vagrant init test-sl7 vagrant up vagrant ssh

Credit

Putting the credit wher it belongs! Main sources used to get this stuff in order are (but here just as a list without any spesific order of imortance):

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Found a typo? Spotted grammar mistakes or confusing phrases?

If you've found a typo, a sentence that could be improved or anything else that should be updated on this blog post, you can access it through a git repository and make a pull request. Instead of posting a comment, please go directly to my Dev.to Github repository and open a new pull request with your changes.

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