How L3 and DHCP agents HA work in Red Hat OSP7
In Red Hat Openstack Platform 7, l3-agent and dhcp-agents are running in active-active on each controller node, instead of active-standby in OSP6. [root@overcloud-controller-2 ~]# pcs status »
NFS backend for Openstack Glance/Cinder/Instance-store
In this post, let’s go through how to configure NFS as unified storage backend for Openstack Glance, Cinder and shared instance-store, also we look at »
Building redundant and distributed L3 network in Juno
Before Juno, when we deploy Openstack in production, there always is a painful point about L3 Agent: High availability and performance bottleneck. Now Juno comes with »
How to inject file/meta/ssh key/root password/userdata/config drive to a VM during nova boot
There are possibilities to inject something into the VM during nova boot, let’s go through them one by one: The test above is done on »
Create PXE-Boot image for Openstack
Openstack doesn’t support launching a diskless PXE-boot VM, we have to make an image with PXE-boot capability to achieve this. 1.Create a small empty »
Openstack Zoning - Region/Availability Zone/Host Aggregate
Openstack cloud can be zoned from top to down levels, into Regions, Availability Zones and Host Aggregates -Region Each Region has its own full Openstack deployment, »
Openstack VM live migration
This post is based assumption that KVM as hypervisor, and Openstack is running in Grizzly on top of RHEL6.4 Openstack VM live migration can have »
Openstack Heat try-out
What’s Heat ? Heat is a service to orchestrate multiple composite cloud applications using the AWS CloudFormation template format, it’s Openstack’s implementation of CloudFormation »
Openstack Quantum supported network topologies
Quantum support very flexible network topologies, this section we talk about several typical modes. 1. No L3-agent, physical network takes L3 function directly For this kind »