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Category: Centos

Installing Openstack Kilo on Centos 7

Published / by tuxninja / 1 Comment on Installing Openstack Kilo on Centos 7

In a previous article I wrote about how to install Openstack Icehouse on CentOS 6.5 in great detail. In this article, I am going to keep verbosity to a minimum and just give you the commands ! I am hoping this will be refreshing for my audience. If you are curious however, about the what, when and why please read my previous article.


  1. You need a machine with x86_64 architecture with at least 4 GB of memory & 2 NIC’s.
  2. On this machine you need to install CentOS 7 as a minimal install
  3. You should create a user with admin privileges (i.e. wheel, in my case ‘tuxninja’ was created)
  4. Disable SELinux
    1. vi /etc/sysconfig/selinux
    2. SELINUX=disabled
    3. save changes

Jumping Right In

Here are the commands you need to run.

  1. sudo yum update -y
  2. sudo yum install -y https://repos.fedorapeople.org/repos/openstack/openstack-kilo/rdo-release-kilo-1.noarch.rpm
  3. sudo yum install epel-release
  4. sudo yum install -y openstack-packstack

Now at this point if you ran ‘packstack’ you would run into a bug with this message

The workaround for this bug is as follows

  1. sudo rpm -e puppet
  2. sudo rpm rpm -e hiera
  3. curl -O https://yum.puppetlabs.com/el/7/products/x86_64/hiera-1.3.4-1.el7.noarch.rpm
  4. sudo rpm -ivh hiera-1.3.4-1.el7.noarch.rpm
  5. vi /etc/yum.repos.d/epel.repo
    1. At the bottom of the [epel] section, after the gpgkey add a newline with: exclude=hiera*
    2. Save the file
  6. sud0 yum install -y puppet-3.6.2-3.el7.noarch
  7. reboot
  8. sudo rm /etc/puppet/hiera.yaml
  9. sudo packstack –allinone

This should successfully install. Godspeed.


Now that Openstack is setup, we still have to setup our network with private & public routed networks, so we can turn this into a real multi-node setup and ssh to our hosts and let them reach the internet etc. To do this, much like my previous post you need to modify your /etc/sysconfig/network-scripts/ files to reflect this.

Note: I deleted all the IPV6 crap, I think it messes some stuff up. When your done making the changes with your favorite editor, restart networking : sudo /etc/init.d/network restart or sudo systemctl restart network

Next go into in the Horizon Dashboard GUI and delete the demo project. See my previous article for details on how.

Back On the All-In-One Node Console

Next ‘reboot’ or restart all openstack services :

Note: it appears the –full-restart flag is gone, used to work !

When logging into your dashboard located at at some point you might hit a bug that prevent you from logging into the Horizon dashboard see : https://bugzilla.redhat.com/show_bug.cgi?id=1218894 … the work-around for this is to clear your browser cookies.

You’re Done

That’s it. Next steps would be to create a project & new admin user, re-create the required network mappings in openstack using the above commands (modify the names to make them unique) and create your ssh key, import it, download some images, import them using glance, and create some VM’s. Also I like to delete the demo project (you can also prevent this from being created with a flag on the packstack command). Make sure you delete all default security rules and add back ICMP, TCP, and UDP allow ingress / egress rules for aka any/any, again you can see my article on CentOS 6.5 with more specifics on how to do this. Additionally, I have an article on how to add additional compute nodes as well.

As always I can be reached for assistance @ tuxninja [at] tuxlabs.com

Happying Stacking !

Creating a bootable USB for Centos on Mac OS X

Published / by tuxninja / Leave a Comment

I’m a huge Ubuntu fan. However, most of my ‘day job’ work requires CentOS or RHEL, thus I commonly have to re-image my on premise Cloud with the latest and greatest CentOS. My servers are 3 Rackables by SGI, two with more CPU & Memory and one (the controller node) with tons of Disk (12x1TB RAID 10) and then for off-premise I use Digital Ocean who has a fantastic product. Most modern servers do not have a CDROM and neither do my on premise systems. Therefore, I need to place the CentOS image on a USB drive so I can re-image my lab. Here are the steps do that on Mac OS X.

List the current Disks & Partitions

My USB drive is the 2GB drive at the bottom, we need to unmount that

Next we copy the CentOS image onto the unmounted USB disk.

When that’s gets done your Mac will pop up a window asking you to initialize the drive, ignore that. Remove it, and your ready to boot off this USB!