Announcing CloudForms 4.2!

Source: Announcing CloudForms 4.2!

Troubleshoot Openstack Networking with Python

The Networker

As an Openstack Administrator for a while, I found the most complicated topic to be understood in openstack project is Networking and how instances ( formerly virtual machines) are communicated with each other and with external world.

Unlike VMWare ESXI, where you can just create vSwitch and attach a VM to it, Openstack Networking is much more complex that that. You need first to define Network type itself(Flat, VLAN, VxLAN, GRE), attach it to the subnet with IPv4 or IPv6 Block, Create a Floating IP address if this network will be connected externally to a provider network and optionally create an internal router to route between different networks and subnets. lots of steps!


Floating ip and neutron router in nutshellimage

Also Neutron itself doesn’t provide an actual networking to the instances. it just a wrapper to a drivers called “Mechanism Drivers” on which they provide the actual networking(switching, routing and…

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Multinode Openstack Installation on Centos 7/RHEL 7

Technology evangelist

This post describing multinode OpenStack installation on centos7/rhel7 for Liberty release. If you want to do single node installation please refer my earlier post.

We are installing OpenStack onto 3 nodes controller,compute and network using packstack utility

Following is 3 node Openstack Architecture and related Openstack services running on respective nodes. I am using two network one is management network of 192.168.56.* which is used for internal communication between nodes and one external network used to assign public IP to VM and to access instances/VM from outside. I am also using NATed DHCP ip on each nodes to download required filesets from internet.


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Getting Your VMs into the Oracle Cloud with Ravello


We were looking into some of the VM images that we have. Some of them were very useful but we were wanting to host them in the cloud for the upcoming workshops.

Ravello is a cloud service that allow you to import and manage your VMs or stacks of VMs on public cloud. The interesting part of this is that the service can use our cloud infrastructure or a third party cloud. Ravello manages the costs but also adds simple capability to manage your VMs better.

Here’s a quick guide to putting VMs (I did a VirtualBox image but it can be any type) in the Oracle Cloud with Ravello.

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