oVirt Blog
This is a series of posts to demonstrate how to install OKD 3.11 on oVirt and what you can do with it. Part I – How to install OKD 3.11 on oVirt How to install OKD 3.11 on oVirt (4.2 and up) Installing OKD or Kubernetes on oVirt has many advantages, and it’s also gotten a lot easier these days. Admins and users who want to take container platform management for a spin, on oVirt, will be encouraged by this. Few of the advantages are: Virtualizing the control plane for Kubernetes – provide HA/backup/affinity capabilities to the controllers and allowing […]
In this post I will introduce how simple it is to integrate SAML with oVirt using Keycloak and LDAP user federation.
Prerequisites: I assume you have already setup the 389ds directory server, but the solution is very similar for any other LDAP provider.
As SAML is not integrated into oVirt directly, we use Apache to do the SAML authentication for us. The mod_auth_mellon module nicely covers all needed functionality.
mod_auth_mellon configuration
First we need to configure oVirt’s apache. SSH to the oVirt engine and create a directory where we’ll store all SAML related certificates.
ssh root@engine
yum […]
Skydive network is an open source real-time network topology and protocols analyzer providing a comprehensive way of understanding what is happening in your network infrastructure.
The common use cases will be, troubleshooting, monitoring, SDN integration and much more.
It has features such as:
Topology capturing – Captures network topology, interface, bridge and more
Flow capture – Distributed probe, L2-L4 classifier, GRE, VXLAN, GENEVE, MPLS/GRE, MPLS/UDP tunnelling support
Extendable – Support for external SDN Controllers or container based infrastructure, OpenStack. Supports extensions through API
Benefit to oVirt users
Skydive allows oVirt administrators to see the network […]
DPDK (Data Plane Development Kit) is a set of open-source high-performance packet processing libraries and user space drivers.
oVirt support for DPDK was introduced in 2017, and is now enhanced in terms of deployment via Ansible and usage via Open Virtual Network.
While still experimental, OVN-DPDK in oVirt is now available in version 4.2.
What’s new?
Ansible DPDK host setup
Host configuration for DPDK usage is now automated using Ansible. This primarly includes:
Hugepages configuration – hugepage size and quantity in the kernel.
CPU partitioning.
Binding NICs to userspace drivers. […]
Grafana, The open platform for beautiful analytics and monitoring,
recently added support for PostgreSQL.
It in now possible to connect Grafana to oVirt DWH,
in order to visualize and monitor the oVirt environment.
Grafana dashboard example
Adding a Read-Only User to the History Database
You may want to add a read only user to connect the history database :
Note: In oVirt 4.2 we ship postgres 9.5 through the Software Collection.
In order to run psql you will need to run:
# su – postgres
$ scl enable rh-postgresql95 — psql ovirt_engine_history
[…]
Note: < 5 minutes read
When running a virtualization workload on oVirt, a VM disk is ‘natively’ a disk somewhere on your network-storage.
Entering containers world, on Kubernetes(k8s) or OpenShift, there are many options specifically because the workload can be totally stateless, i.e
they are stored on a host supplied disk and can be removed when the container is terminated. The more interesting case is stateful workloads i.e apps that persist data (think DBs, web servers/services, etc). k8s/OpenShift designed an API to dynamically provision the container storage (volume in k8s terminology).
See the resources section for more details. […]
In December, the oVirt Project shipped version 4.2 of its open source virtualization management system. With a new release comes an update to this howto for running oVirt together with Gluster storage using a trio of servers to provide for the system’s virtualization and storage needs, in a configuration that allows you to take one of the three hosts down at a time without disrupting your running VMs.
If you’re looking instead for a simpler, single-machine option for trying out oVirt, your best bet is the oVirt Live ISO page. This is a LiveCD image that you can burn […]
oVirt web admin UI now allows the user to bookmark all entities and searches using their browser.
Synchronizing URL with application state
Whenever you select a detail view in the application, the browser URL is now updated to match the selected entity. For instance if you have a VM named MyVM and you click on the name to see the details, the URL of the browser will go to #vms-general;name=MyVM. If you switch to lets say the network interfaces tab the URL in your browser will switch to #vms-network_interfaces;name=MyVM. Changing entity or changing location will keep the […]
We are delighted to announce the general availability of oVirt 4.2, as of December 19, 2017, for Red Hat Enterprise Linux 7.4, CentOS Linux 7.4, or similar.
oVirt 4.2 is an altogether more powerful and flexible open source virtualization solution. The release is a major milestone for the project, encompassing over 1000 individual changes and a wide range of enhancements spanning storage, network, engine, user interface, and analytics.
What’s new in oVirt 4.2?
The big new features:
The Administration Portal has been redesigned using Patternfly, a widely adopted standard in web application design that promotes […]
The oVirt project now includes a unified metrics and logs real-time monitoring solution for the oVirt environment.
Using Elasticsearch – a search and analytics engine – and its native visualization layer, Kibana, we now provide oVirt project users with a fully functional monitoring solution.
The solution includes self-service dashboards for creating your own dashboard, reports, and log analysis for both the engine and VDSM logs.
The Kibana dashboard
Combining Elasticsearch and kibana – both built on top of the OpenShift Container Platform (OCP) – with the collectd and fluentd client-side daemons, results in a powerful […]
