Avalon Media System
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These are the instructions for creating an end-user VM from scratch.

VM Configuration

  • Using VirtualBox:
    • 1 Core
    • 3G RAM
    • 500G System Disk (VDI, Dynamically Allocated)
    • Set network to "Attached to Bridged Adapter"

Base OS Install

  • Centos 6.4 x86-64
  • English language and keyboard
  • hostname: localhost.localdomain (the default)
    • if it is localhost it should set it to the dhcp hostname provided.
  • eth0:
    • Clear "Device MAC address"
    • Connect automatically
    • IPv4 Settings
      • Automatic (DHCP)

  • set timezone to america/indiana/indianapolis, clock uses utc
  • root password is 'changeme'
  • partitioning:
    • custom layout
      • /dev/sda1:  500M ext4 mounted as /boot
      • /dev/sda2:  (remainder of disk) Physical volume
      • Volume Group:  vg_avalon
        • PVs: /dev/sda2
        • LV lv_swap 2G
        • LV lv_root (remainder of disk) ext4 mounted as /
  • Desktop install
  • Reboot / Firstboot
    • Leave all of the defaults, except...
    • Do Not create a new user
  • Log in as root
    • do not check "do not show me this again" to the "you are running as root" dialog.  Just close it.
    • yum update
    • open these ports in the firewall:
      • tcp/22
      • tcp/80
      • tcp/1935
      • tcp/18080
    • clean up eth0 configuration in /etc/sysconfig/network-scripts/ifcfg-eth0:
      • remove UUID
      • remove any DHCP_CLIENT_ID
  • OPTIONAL:
    • shut down the VM
    • at this point the vm is at "baseOS" and can be used as a cloning point

There is a bug in virtual box with IPv6 handling over a bridged network.  When the bug is present the top transfer speeds for IPv6 are around 18kb/s.  Since RHEL (and derivatives) prefer IPv6 when looking up hosts, it is not uncommon to get an IPv6 host address for updates.  To disable IPv6 on the guest add these lines to /etc/sysctl.conf

net.ipv6.conf.all.disable_ipv6 = 1
 net.ipv6.conf.default.disable_ipv6 = 1

 

Avalon Install

  • OPTIONAL:
    • clone the baseOS image as puppet-YYMMDD
  • Use the installation notes from https://github.com/avalonmediasystem/avalon-installer
    • When setting FACTER_* environment variables, set
      • FACTER_avalon_dropbox_password to "changeme"
      • FACTER_avalon_hostname to "localhost.localdomain"
  • HACK:
    • add avalon to the dropbox group
    • verify that /var/avalon/dropbox is mode 2775

Demo Content

  • OPTIONAL:
    • clone the puppet image as democontent-YYMMDD

  • Get the demo fixtures bundle

    cd /tmp
wget http://dlib.indiana.edu/~cjcolvar/DemoFixturesBatch.tar.gz     #We need a better place to serve this from
tar xvzf DemoFixturesBatch.tar.gz
chown -R avalondrop.dropbox DemoFixturesBatch
mv DemoFixturesBatch /var/avalon/dropbox

    Monitor progress at http://<whatever>:18080.  

  • Modify /var/www/avalon/current/app/views/catalog/_home_text.html.erb and replace sample content with something like:

     <ul class="thumbnails">
	<li class="span3"><h5>Featured Video</h5><a href="<%= media_object_path('avalon:1') %>" class="thumbnail" <%= image_tag "thumbnail.name.png", alt: "Featured Video" %></a></li>
	<li class="span3"><h5>Featured Video</h5><a href="<%= media_object_path('avalon:2') %>" class="thumbnail" <%= image_tag "thumbnail.name.png", alt: "Featured Video" %></a></li>
	<li class="span3"><h5>Featured Video</h5><a href="<%= media_object_path('avalon:3') %>" class="thumbnail" <%= image_tag "thumbnail.name.png", alt: "Featured Video" %></a></li>
</ul>

    Thumbnail images should be stored in /var/www/avalon/current/app/assets/images

  • Remove source data

    rm /tmp/DemoFixturesBatch.tar.gz
rm -rf /var/avalon/dropbox/DemoFixturesBatch

VM Image Prep

  • OPTIONAL:
    • clone the latest democontent image as dist-YYMMDD
  • Install avalon-vm-1.0-1.noarch.rpm to install the firstboot changes and tools
  • Prepare the disk for compacting

    • deleted files still take up space on the disk image.  Write a big zero file to clear out that unused data

      dd if=/dev/zero of=/tmp/foo bs=1M count=8192 oflags=direct; rm /tmp/foo
  • run /usr/share/avalon/dist-prep to prepare the machine for release
  • clear the command line history  (history -c)
  • shutdown the VM
  • Compact the disk image

    • On the host run:

      VBoxManage modifyhd avalon-vm-disk-YYMMDD.vdi --compact
  • Export the appliance
    • use a 0.9 version OVA
    • use a MANIFEST
  • copy the OVA to the distribution point

 

 

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