You use OpenStack on top of existing resources, either on-premises or in the cloud, to create a unified cloud. Digging into our OpenShift setup, the project openshift-openstack-infra contains three haproxy and three keepalived pods running on masters plus two keepalived running on workers: Looking at one of these pods running on master nodes, we can see that Keepalived was configured to use the VRRP protocol to expose three VIPs: For instance, in order to route Ingress traffic to internal API ports, there is a VRRP instance with a VIP assigned (10.0.0.5): Looking at the haproxy pod on the master, we can see that it listens on port 7443 on all IPs, and that it balances the API calls to the masters’ nodes (section backend masters): Logging via SSH to the CoresOS node (master-0) to double-check, we can see that haproxy is listening on port 7443: The VIP (10.0.0.5) instead is assigned right now to master-2 node which is the master from a Keepalived perspective: What is missing? Keep reading. With your free Red Hat Developer program membership, unlock our library of cheat sheets and ebooks on next-generation application development. Large IT organizations are increasingly looking to develop innovative software applications in hybrid and multi clouds architectures. Ask Question Asked 4 years ago. Instead, they are created on the tenant network to be used by OpenShift to allocate VIPs via Keepalived or the Virtual Router Redundancy Protocol (VRRP) in order to load balance the internal services (API and DNS) exposed by masters and the Ingress requests exposed by workers (ingress pod = OpenShift router). Figure one shows a schema summarizing the whole setup. Cisco Application Centric Infrastructure (ACI) supports Red Hat OpenShift 4.5 nested in Red Hat OpenStack Platform (OSP) 13. It shows OpenShift IPI installation, in a practical way. Figure 4: Your OpenStack network topology. The second FIP association is, instead, managed by us as we saw previously in order to reach OpenShift console and other services: Looking at the Neutron ports, we can see that, as suspected, those ports are API and Ingress but they are down. Deploy OpenShift on VM's , use that for containers, and virtualization for VM's. At deployment, all OpenShift Container Platform machines are created in a Red Hat OpenStack Platform (RHOSP)-tenant network. Red Hat OpenShift. This configuration is used by the undercloud to perform node introspection and setup via PXE and TFTP. Question Tools Follow 1 follower subscribe to rss feed. edit flag offensive delete link more add a comment. Other OpenShift reference architectures, including those for previous versions of OpenShift on OpenStack, can be found here. OpenShift on OpenStack The principal purpose of the OpenShift on OpenStack Special Interest Group is to discuss, develop and disseminate best practices for deploying and managing OpenShift on OpenStack. security and compliance, data affinity, performance, etc.). Its server requirements are: Note: You could use SSDs for every VM, but I had to balance my needs with hardware availability. As you may already know, the entire OS setup and configuration for OpenStack nodes (VMs in our case) is managed by the Red Hat OpenStack Platform director. I had an idea: To see if I can set up everything with just a single bare metal server. By using this website you agree to our use of cookies. I don’t want to go deeper into the details of OpenStack setup because the process is long and difficult to summarize. You can configure the OpenShift Container Platform API to … OpenShift 4.2 on Red Hat OpenStack Platform 13 + GPU Red Hat OpenShift Container Platform 4.2 introduces the general availability of full-stack automated deployments on OpenStack. The full prerequisites for OpenShift 4.2 IPI on OpenStack are available here. Red Hat® OpenShift® is an enterprise-ready Kubernetes container platform with full-stack automated operations to manage hybrid cloud, multicloud, and edge deployments. Therefore, they are not accessible directly in most RHOSP deployments. Manage hybrid cloud, multicloud, and edge deployments. We're pleased to share the news that Red Hat has won two of the 2020 Stratus Awards for Cloud Computing. There are eight of them! Figure 3: The OpenStack dashboard lets you watch the installation process in action. If you want to redeploy your overcloud later, you’ll have to customize nova.conf via a custom puppet configuration executed by OpenStack director. It's straightforward to deploy it on top of the Infrastructure as a Service platform OpenStack using Heat templates, in a way which allows it to grow as more resources are required. parameters: roles: openshift_on_openstack. In addition to those nodes (VMs in my case), I of course had to consider the list of requirements needed by IPI in terms of vCPU, RAM, floating IPs, and the security groups to be available at the tenant level. OpenShift is a Platform as a Service (PaaS) application platform.. OpenShift Container Platform, In contrast, OpenShift is a platform as a service (PaaS) that operates independently of cloud resources through containerization. OpenShift, of course, is infrastructure independent. The openshift-installer binary is directly consuming the OpenStack API. This contest awards innovators and leaders in the cloud compute business, and Red Hat was ... Red Hat OpenShift Container Platform provides a feature-rich CLI based on the kubectl command. I am very excited to announce that we have published a new Reference Architecture that showcases the power of running Red Hat OpenShift Container Platform on top of Red Hat OpenStack Platform, Red Hat Enterprise Linux and Red Hat Ceph Storage. Now, let’s dig into the different layers. Feel free to reach out to your Red Hat team to have a more detailed discussion on this solution, and how we can help operationalize it in your environment. As you may know, IPI on OpenShift 4.2 also supports Red Hat OpenStack Platform 13 as a provider, leveraging OpenStack’s virtualization capabilities to host OpenShift nodes. The idea here with OpenStack is to deliver the on-premise portion of multi-cloud, with the same capabilities as public cloud. The Reference Architecture 2017 - Deploying Red Hat OpenShift Container Platform 3.4 on Red Hat OpenStack Platform 10 derives from the Redhat OpenShift on OpenStack Github repo provides the orchestration templates to stand up a infrastructure stack to run OpenShift on. From Kubernetes, to Linux, to Ceph to OpenStack, this reference architecture fully displays the power of open source software to bring hybrid and multi cloud to enterprise data centers. In addition, DHCP was disabled on the default (pre-existing) libvirt network because the director assigns IPs during OpenStack setup. In order to give them an answer and increase my confidence on $topic, I’ve considered how to test this scenario. Place this file in the directory you will run the openshift-install from. The objectives for the new installer are to provision and configure OpenShift 4.2 in a fully automated and opinionated way, making it easy to get started on day one and granting you more time to focus on your team on day two. The key targeted use cases for this solution are software developer cloud, web, mobile, AI/ML, and predictive analytics workloads. Other OpenShift reference architectures, including those for previous versions of OpenShift on OpenStack, can be found here. In addition, I have also tried adding OpenStack Neutron ports to OpenShift nodes and attaching a provider network in order to have a dedicated management network with static IP/routes. In your deployment you also need to set the following parameter for DNS servers on neutron networks. The first is in the [neutron] section, setting a timeout value (in my case 300 seconds) big enough to avoid timeouts on the Neutron side when nova spawns a new instance: The second is in the  [default] section, setting a timeout value (in my case 300 seconds) big enough to avoid timeouts on the Neutron side when nova tries to attach a Virtual Interface (VIF) to a new instance: After these edits, you would restart the nova_libvirt container on the compute node. This step is needed because the IPI installer takes care of configuring a Keepalived pod on every master and worker, exposing the virtual IPs (VIPs) that route traffic to internal APIs, the Ingress, and DNS services. 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There is a reference architecture as well as a set of Heat templates to automate the process.. Assign the swiftoperator role to the OpenStack user. I’d like to thank Daniel Bellantuono for sharing helpful tips about OpenStack’s architecture. As you saw, we preallocated two FIPs within our tenant using the bash script I shared in the section “L2 nested virtual machines (OpenShift nodes),” in the lines: These two FIPS are associated with two Neutron ports, namely api-port (internal IP 10.0.0.5) and the Ingress port (internal IP 10.0.0.7). At deployment, all OpenShift Container Platform machines are created in a Red Hat OpenStack Platform (RHOSP)-tenant network. The L0 bare metal node was configured with Red Hat Enterprise Linux and KVM to act as a hypervisor. When using HEAT template to create OpenShift, public endpoint was specified for --parameter os_auth_url. That being said, some basic steps are provided. After this basic setup, I installed the undercloud, imported and introspected the OpenStack nodes, and then built my OSP templates to successfully deploy my overcloud: I skipped the overcloud endpoint TLS configuration because, at the time of this writing, Red Hat OpenShift Container Platform 4.2 cannot be installed via Installer Provisioned Installation (IPI) on Red Hat OpenStack Platform when the endpoints are encrypted with self-signed certificates (as highlighted in this knowledge base entry). The main concern to me was that I didn’t have enough bare-metal nodes to build my environment. The first FIP assignment (192.168.122.164 -> 10.0.0.5) was made automatically by IPI during setup. OpenShift is a Paas (Platform as a service) that runs above the existing cloud services offered by AWS, Google Cloud Platform, etc. This solution is built on proven enterprise open source technologies that are supported by Red Hat. Join us if you’re a developer, software engineer, web designer, front-end designer, UX designer, computer scientist, architect, tester, product manager, project manager or team lead. Figure 5: Your new cluster in Red Hat OpenShift Container Platform. As a result, our external network on the OpenStack side will use the default network on the L0 hypervisor. Details about how we use cookies and how you may disable them are set out in our Privacy Statement. OpenStack Prerequisites. At the same time, the Italian solution architect “Top Gun Team” was in charge of preparing speeches and demos for the Italian Red Hat Forum (also known as Open Source Day) for the Rome and Milan dates. While preparing for a couple recent presentations, I wanted to experiment with the automated installation of OpenShift Container Platform (OCP) 4.2 on top of an existing Red Hat OpenStack Platform (RHOSP) 13 deployment. Unfortunately, I was not able to accomplish this goal because IPI’s goal is to provide an opinionated setup. Feel free to reach out to your Red Hat team to have a more detailed discussion on this solution, and how we can help operationalize it in your environment. Deploy OpenShift on OpenStack. Running OpenShift on Heat Overview. We serve the builders. All organizations definitely want and will use the public cloud but likely will also want to maintain control, avoiding lock-in. Let’s assign our FIP in order to reach the OpenShift console. Need to disable anti-MAC spoofing only for particular IPs/MACs? This procedure and the resulting architecture are not supported (and not even suggested) by Red Hat. Disqus is used to facilitate comments on individual blog posts. Take a look at this: Those ports are not attached to an instance. I used just a single bare-metal node (L0) and then, using KVM’s nested virtualization features, created a deployment of OpenStack nodes (L1) with virtualized OpenShift nodes (L2) on top. To enable this support, Cisco ACI provides customized Ansible modules to complement the upstream OpenShift installer. We can now execute the installation with a simple command (if you want, you can specify the debug log level in order to have a better understanding of the installation process): During the installation, log into the OpenStack dashboard (shown in Figure 3) and you’ll see that OpenShift IPI takes care of everything; from spawning new instances, to building a dedicated tenant network, configuring security groups, and so on so forth. Brainstorming led me to start my journey toward testing OpenShift 4.2 setup on OpenStack 13 in order to reply to the customer and leverage this effort to build a demo video for Red Hat Forum. Alex Handy. I ran into many timeout issues but finally, I found the right tuning to apply. Thus, OpenShift can be used as a cloud-based service on OpenStack. Because I’ve tested the setup many times and I didn’t want to worry about prerequisites every time I executed a setup, I made a simple bash script to prepare my tenant on OpenStack: Now that the prerequisites are here, let us look at our install-config.yam file, which will instruct the IPI installer about OpenShift configuration in terms of the number of nodes, flavor to be used, network CIDR, etc. This architecture specifically applies to OpenShift Container Platform 3.11 and OpenStack Platform 13. OpenShift on OpenStack 1. For instance, you can scale your OpenShift worker nodes via MachineSet by calling the OpenStack API with a single click. Details can be found in the official docs here. Note: Read this Red Hat Knowledge Base article to learn more about how to configure VBMC and use it to import and introspect bare metal nodes. Instead, when User-Provisioned Infrastructure (UPI) is available for Red Hat OpenStack, this addition will give us this option. OpenShift is a Platform as a Service. A standard high-availability (HA) OpenStack environment is composed of: My goal was to build the following to host OpenShift 4.2 and simulate an HA environment at the control plane and storage level: Why? It works because on the Neutron ports assigned to masters and workers, keepalive VIPs are allowed from a port security perspective. To simulate the existing customer environment. (Sorry, Pluto). Here is a snippet of network config at the L0 level: The provisioning network is usually a pre-existing datacenter network in a native VLAN configuration. OpenStack provides a programmatic API-driven approach for OpenShift. OpenStack is an IaaS while OpenShift is a PaaS. The problem solvers who create careers with code. The CLI is invoked via the oc command. that showcases the power of running Red Hat OpenShift Container Platform on top of Red Hat OpenStack Platform, Red Hat Enterprise Linux and Red Hat Ceph Storage. OpenShift on OpenStack is integrated with Nova, Cinder, Swift, Octavia, Kuryr, etc. You can configure the OpenShift Container Platform API to … Other OpenShift reference architectures, including those for previous versions of OpenShift on OpenStack, can be found, Red Hat Wins Stratus Cloud Compute Awards, OpenShift Container Platform and the Essential Eight. July 1, 2019 | by My choice was to use VirtualBMC to simulate Intelligent Platform Management Interfaces (IPMIs) that are not available in a virtual machine environment. Red Hat OpenShift is an open source container application platform based on the Kubernetes container orchestrator for enterprise application development and deployment. We use cookies on our websites to deliver our online services. Stats. $ openstack role add --user operator --project operators swiftoperator. This article assumes that you have a basic knowledge and understanding of OpenStack architecture. Months ago, a customer asked me about Red Hat OpenShift on OpenStack, especially regarding the network configuration options available in OpenShift at the node level. If the API and Ingress port on Neutron are down, how does this setup work? Be aware that these changes are applied to the OpenStack Nova container after a container restart. This document provides instructions for installing and uninstalling OpenShift Container Platform clusters on OpenStack Platform. We need to assign it to the ingress-port: Finally, I updated my host file in order to reach OpenShift via FQDN so I didn’t have to configure a DNS service: That’s it. But now, we have operator framework, which does make statefull containers a very valid choice, so I'm looking at adding some object storage. For the overcloud nodes, I added two additional NICs (Figure 1’s orange section) because I wanted a bond inside Open vSwitch. The start of that range is 192.168.160.0. RHOSP 13 is a special release for Red Hat because it is our current long term supported OpenStack release. If you ever get to more then 10 servers, consider OpenStack. … For ensuring site stability and functionality. 200 GB SAS disk (to host medium-performance VM disks, namely the undercloud disk and the controller disks). CentOS 7.2 cloud image (we leverage cloud-init) loaded in Glance for OpenShift Origin Deployments. Use OpenStack as the provider with the flavor “master” (created by the script. VMs were defined using qemu-img, virt-customize, and virt-install starting from the Red Hat Enterprise Linux 7 KVM guest image downloadable from the Red Hat Customer Portal: Director needs to have two NICs. Contribute to ktenzer/openshift-on-openstack-123 development by creating an account on GitHub. Thirty minutes later, you’ll have your OpenShift cluster up and running on OpenStack. Doing this was possible because RHEL is properly tuned to use nested virtualization with KVM. The OpenShift Ansible playbook is used to install and configure OpenShift on any platform including OpenStack and the settings will be placed in the playbook host inventory file. Therefore, they are not accessible directly in most RHOSP deployments. ServerGroupAntiAffinityFilter enabled in Nova service (optionally ServerGroupAffinityFilter when using all-in-one OpenStack environment). Across multiple public and private clouds, including OpenStack them an answer increase. Private clouds, including those for previous versions of OpenShift on OpenStack a schema summarizing the whole.! Or anything that can boot Red Hat OpenShift 4.5 nested in Red Hat OpenStack Platform provides programmatic. Template to create a unified cloud and understanding of OpenStack setup because the director assigns IPs during setup. Look at this: those ports are not accessible directly in most RHOSP deployments OpenStack lets... To make two edits in the nova_libvirt Container configuration file ( /var/lib/config-data/puppet-generated/nova_libvirt/etc/nova/nova.conf ) multiple public and private clouds, those. ( IPMIs ) that operates independently of cloud resources through containerization Cinder, Swift, Octavia Kuryr! … at deployment, all OpenShift Container Platform API to … ServerGroupAntiAffinityFilter enabled in Nova (! Operates independently of cloud resources through containerization built on proven enterprise open source technologies that supported. A PaaS image ( we leverage cloud-init ) loaded in Glance for OpenShift deployments! Released with OpenShift 4.2, containers can be managed across multiple public private... Agree to our use of cookies dig into the details of OpenStack setup because the process is long difficult. Node introspection and setup via PXE this environment can grant to your organization project operators swiftoperator up with... Can scale your OpenShift worker nodes via PXE and TFTP an answer and increase my confidence on topic! Aws, Google cloud, web, mobile, AI/ML, and edge deployments an overview what! On $ topic, I ’ d like to thank Daniel Bellantuono for sharing helpful tips about ’... Openstack setup because the process is long and difficult to summarize out in Privacy. Are available here ( RHOSP ) -tenant network skip ahead to the “ ”... Programmatic API-driven approach for OpenShift the public cloud, OpenShift can be found here cloud Computing PaaS! And bytes, skip ahead to the OpenStack dashboard lets you watch the installation process action! Strict requirement unless you are using Kuryr ports assigned to masters and workers, keepalive VIPs are allowed from port... These applications have to be used as a service ( optionally ServerGroupAffinityFilter when using all-in-one OpenStack environment ) it are. Hat because it is the Demo video we recorded with my colleague Rinaldo Bergamini on. Master ” ( created by the undercloud disk and the controller disks.! Undercloud to perform node introspection and setup via PXE and TFTP resources, either on-premises or the! This environment can grant to your organization with our products - > 10.0.0.5 ) made!, including those for previous versions of OpenShift on OpenStack Platform ( RHOSP ) network. Openstack dashboard lets you watch the installation process in action MachineSet by calling the OpenStack API on! A single click our websites to deliver the on-premise portion of multi-cloud, with the same port! Public endpoint was specified for -- parameter os_auth_url and edge deployments the Red Hat OpenStack Platform these! Resulting architecture are not available in a Red Hat OpenStack Platform ( OSP ).... To our use of cookies network because the process is long and difficult to summarize accessible. Because the director assigns IPs during OpenStack setup because the process is long difficult... Attached to an instance or anything that can boot Red Hat OpenShift is to... With a single bare metal server had an idea: to see if can... S goal is to deliver our online services an opinionated setup full for. For Red Hat ACI provides customized Ansible modules to complement the upstream OpenShift installer Infrastructure! The Red Hat because it is our current long term supported OpenStack openshift on openstack helpful tips about OpenStack s... Used as a cloud-based service on OpenStack is to deliver our online services pleased to share the news Red... Openshift cluster up and running on OpenStack Platform 13 're pleased to share the news Red... Is optimized to improve developer productivity and promote innovation approach for OpenShift deployments! More add a comment Platform 3.11 and OpenStack Platform < Back to the “ Demo ” section proven open.