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openshift on openstack

Get to know Ask OpenStack Resources for moderators. There are eight of them! As a result, our external network on the OpenStack side will use the default network on the L0 hypervisor. This architecture specifically applies to OpenShift Container Platform 3.11 and OpenStack Platform 13. I’d like to thank Daniel Bellantuono for sharing helpful tips about OpenStack’s architecture. 200 GB SAS disk (to host medium-performance VM disks, namely the undercloud disk and the controller disks). Red Hat OpenShift is an open source container application platform based on the Kubernetes container orchestrator for enterprise application development and deployment. The openshift-installer binary is directly consuming the OpenStack API. If you ever get to more then 10 servers, consider OpenStack. 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). This document provides instructions for installing and uninstalling OpenShift Container Platform clusters on OpenStack Platform. OpenShift Container Platform, OpenStack Platform < Back to the blog. Be aware that these changes are applied to the OpenStack Nova container after a container restart. 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. You can configure the OpenShift Container Platform API to … 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. Figure 5: Your new cluster in Red Hat OpenShift Container Platform. 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. Using OpenShift on OpenStack, Red Hat Customers Power Infrastructure and Application Modernization. OpenShift is a Platform as a Service. Take a look at this: Those ports are not attached to an instance. The full prerequisites for OpenShift 4.2 IPI on OpenStack are available here. Thus, OpenShift can be used as a cloud-based service on OpenStack. Note: If you want to skip the bits and bytes, skip ahead to the “Demo” section. 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. OpenStack and OpenShift don't overlap at all. You can configure OpenShift Container Platform API and application access by using floating IP addresses (FIPs) during installation. That being said, some basic steps are provided. For ensuring site stability and functionality. Ask Question Asked 4 years ago. Deploy OpenShift on VM's , use that for containers, and virtualization for VM's. Warning: This article was written to help customers, partners, and community members test OpenShift 4.2 on OpenStack 13 only for demo/test purposes. With your free Red Hat Developer program membership, unlock our library of cheat sheets and ebooks on next-generation application development. Details can be found in the official docs here. In this case, it is the second half of the range identified in the first parameter (openshift_openstack_kuryr_service_subnet_cidr). 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. You probably had to make two edits in the nova_libvirt container configuration file (/var/lib/config-data/puppet-generated/nova_libvirt/etc/nova/nova.conf). OpenShift is the only way to truly get multi-cloud, enterprise Kubernetes. This private cloud should be simple, agile, flexible, secure, cost efficient, and a key part of their overall Hybrid and Multi cloud architecture. Why OpenShift on OpenStack? Today organizations have an … Keep reading. At deployment, all OpenShift Container Platform machines are created in a Red Hat OpenStack Platform (RHOSP)-tenant network. It works because on the Neutron ports assigned to masters and workers, keepalive VIPs are allowed from a port security perspective. 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. So, how can load balancing work? This setting allows incoming traffic from different IPs on the same Neutron port: Need to summarize the traffic flow for incoming API traffic? Its server requirements are: Note: You could use SSDs for every VM, but I had to balance my needs with hardware availability. 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. OpenShift on OpenStack is integrated with Nova, Cinder, Swift, Octavia, Kuryr, etc. The key targeted use cases for this solution are software developer cloud, web, mobile, AI/ML, and predictive analytics workloads. (Sorry, Pluto). I had an idea: To see if I can set up everything with just a single bare metal server. OpenStack provides a programmatic API-driven approach for OpenShift. We use cookies on our websites to deliver our online services. 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. This solution is built on proven enterprise open source technologies that are supported by Red Hat. This article assumes that you have a basic knowledge and understanding of OpenStack architecture. You can run it on public cloud, virtualization, baremetal or anything that can boot Red Hat Enterprise Linux. 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. A lot of these applications have to be developed and deployed in an on-premises private cloud for various reasons (e.g. 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. Octavia is not a strict requirement unless you are using Kuryr. The guide below can be used to demonstrate launching a single-instance OpenShift implementation (a broker and node on one instance), via a heat template.. In order to give them an answer and increase my confidence on $topic, I’ve considered how to test this scenario. OpenShift, of course, is infrastructure independent. My choice was to use VirtualBMC to simulate Intelligent Platform Management Interfaces (IPMIs) that are not available in a virtual machine environment. What follows are a couple of tips and tricks regarding OpenStack compute node timeout tuning. It looks like this: To summarize Ingress traffic flow for incoming HTTP/HTTPS requests: Note: This page explains IPI networking infrastructure with a good level of detail. 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. That effort pushed me to publish this article so I can share and explain how I tested an OpenShift 4.2 IPI setup on OpenStack 13 with a single Red Hat Enterprise Linux (RHEL) server. There are a number of advantages to combining these two solutions: OpenShift Installer Provisioned Infrastructure (IPI) was released with OpenShift 4.2. At deployment, all OpenShift Container Platform machines are created in a Red Hat OpenStack Platform (RHOSP)-tenant network. Need to disable anti-MAC spoofing only for particular IPs/MACs? OpenShift on OpenStack 1. 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. Use OpenStack as the provider with the flavor “master” (created by the script. 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). 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. The CLI is invoked via the oc command. First create an OpenStack project and user. security and compliance, data affinity, performance, etc.). OpenShift Container Platform, You can configure the OpenShift Container Platform API to … Figure one shows a schema summarizing the whole setup. OpenStack and Kubernetes-based hybrid cloud solutions accelerate business transformation through container-based application development and tightly integrated cloud technologies. Alex Handy. ServerGroupAntiAffinityFilter enabled in Nova service (optionally ServerGroupAffinityFilter when using all-in-one OpenStack environment). … OpenShift is a Platform as a Service (PaaS) application platform.. If you want to redeploy your overcloud later, you’ll have to customize nova.conf via a custom puppet configuration executed by OpenStack director. Doing this was possible because RHEL is properly tuned to use nested virtualization with KVM. Large IT organizations are increasingly looking to develop innovative software applications in hybrid and multi clouds architectures. Thirty minutes later, you’ll have your OpenShift cluster up and running on OpenStack. Running OpenShift on Heat Overview. Instead, when User-Provisioned Infrastructure (UPI) is available for Red Hat OpenStack, this addition will give us this option. This solution is built on proven enterprise open source technologies that are supported by Red Hat. Stats. 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. 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). edit flag offensive delete link more add a comment. OpenStack Platform. All organizations definitely want and will use the public cloud but likely will also want to maintain control, avoiding lock-in. The first FIP assignment (192.168.122.164 -> 10.0.0.5) was made automatically by IPI during setup. This presentation gives an overview of what OpenShift gives to developers, and how to deploy it on top of OpenStack. Now, let’s dig into the different layers. 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. Other OpenShift reference architectures, including those for previous versions of OpenShift on OpenStack, can be found here. I ran into many timeout issues but finally, I found the right tuning to apply. The OpenShift CLI (oc) is mainly used to interact with the API ... What do the planets of the solar system and Australian cybersecurity strategies have in common? Contribute to ktenzer/openshift-on-openstack-123 development by creating an account on GitHub. Manage hybrid cloud, multicloud, and edge deployments. CentOS 7.2 cloud image (we leverage cloud-init) loaded in Glance for OpenShift Origin Deployments. With OpenShift 4.2, containers can be managed across multiple public and private clouds, including OpenStack. You use OpenStack on top of existing resources, either on-premises or in the cloud, to create a unified cloud. We use cookies on our websites to deliver our online services. Assign the swiftoperator role to the OpenStack user. 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. Red Hat OpenShift is optimized to improve developer productivity and promote innovation. 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. Place this file in the directory you will run the openshift-install from. In addition, DHCP was disabled on the default (pre-existing) libvirt network because the director assigns IPs during OpenStack setup. 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. 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This procedure and the resulting architecture are not supported (and not even suggested) by Red Hat. To simulate the existing customer environment. 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. 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. Deploy OpenShift on OpenStack. Active 4 years ago. November 10, 2020. OpenStack is compatible with cloud providers, including Azure, AWS, Google Cloud, and Digital Ocean. Categories. Red Hat® OpenShift® is an enterprise-ready Kubernetes container platform with full-stack automated operations to manage hybrid cloud, multicloud, and edge deployments. Figure 3: The OpenStack dashboard lets you watch the installation process in action. In addition, I included a floating IP (FIP) for the internal API load balancer (lbFloatingIP)—this FIP grants access to the internal LB (API load balancer): You may also notice that I didn’t use Octavia (an OpenStack load balancer-as-a-service) because, in my own test, I specifically want to simulate a customer environment where Octavia is not used. In contrast, OpenShift is a platform as a service (PaaS) that operates independently of cloud resources through containerization. This is possible because both technologies are independent of each other. The idea here with OpenStack is to deliver the on-premise portion of multi-cloud, with the same capabilities as public cloud. Therefore, the results are this: Here is the resulting overcloud server list: Because of the limited hardware capabilities (and over-committing, too, given that we are talking about one single bare-metal server), I executed many tests in order to successfully deploy OpenShift on OpenStack. With Red Hat OpenShift Container Platform on Red Hat OpenStack Platform, both the Infrastructure-as-a-Service (IaaS) and Container-as-a-Service (CaaS) layers are automated, designed to provide integrated consistency through the product stack and improved datacenter management efficiency. First, you need to define a provisioning network on libvirt for the undercloud to use when installing our overcloud nodes via PXE. openshift_openstack_kuryr_service_pool_start: The start of the range to be used by the Octavia load balancer Amphora VM IPs. The problem solvers who create careers with code. You can also use the oc client from the client machine used to install OpenShift (in my case, it was my undercloud VM): There is only one post-deployment command required in order to attach a pre-allocated floating IP address (FIP) to the Ingress port. This new reference architecture demonstrates a private cloud solution for enterprise, telco IT, government, and IT service providers that desire a private cloud with programmable Infrastructure as a Service (IaaS), Containers as a Service (CaaS), and Platform as a Service (PaaS) capabilities. For the overcloud nodes, I added two additional NICs (Figure 1’s orange section) because I wanted a bond inside Open vSwitch. The virsh command shows the rest of the bare metal node’s specs: Next, I used the tuned command to perform network latency workload tuning at the L0 level: In order to successfully configure and deploy your overcloud nodes, you need to do two things. Therefore, they are not accessible directly in most RHOSP deployments. You can then start playing around to test the capabilities this environment can grant to your organization. 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. But now, we have operator framework, which does make statefull containers a very valid choice, so I'm looking at adding some object storage. 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. 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? This new reference architecture demonstrates a private cloud solution for enterprise, telco IT, government, and IT service providers that desire a private cloud with programmable Infrastructure as a Service (IaaS), Containers as a Service (CaaS), and Platform as a Service (PaaS) capabilities. We will use the openshift-installer binary to spawn the OpenShift cluster on OpenStack. Disqus is used to facilitate comments on individual blog posts. OpenShift is a Paas (Platform as a service) that runs above the existing cloud services offered by AWS, Google Cloud Platform, etc. We serve the builders. Unfortunately, I was not able to accomplish this goal because IPI’s goal is to provide an opinionated setup. The key architecture components of the solution are: A range of testing was performed in the Red Hat labs to validate these design and deployment best practices, aiming to help you achieve faster time to business value. Other OpenShift reference architectures, including those for previous versions of OpenShift on OpenStack, can be found here. At the end of the installation, we will have one OpenShift cluster running on seven OpenStack Virtual Machines: 3 x OpenShift masters VMs; 3 x OpenShift workers for CPU workloads VMs RHOSP 13 is a special release for Red Hat because it is our current long term supported OpenStack release. OpenShift on OpenStack. parameters: roles: openshift_on_openstack. This configuration is used by the undercloud to perform node introspection and setup via PXE and TFTP. Therefore, they are not accessible directly in most RHOSP deployments. At deployment, all OpenShift Container Platform machines are created in a Red Hat OpenStack Platform (RHOSP)-tenant network. 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. 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. Red Hat OpenShift. OpenStack Prerequisites. The Essential Eight is a set of baseline recommendations ... New OpenShift on OpenStack Reference Architecture, I am very excited to announce that we have published a new. 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. Therefore, they are not accessible directly in most RHOSP deployments. 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. The first one (eth0) is attached to the provisioning network in order to successfully deploy overcloud nodes, and the second (eth1) is attached to the default network in order to reach (via the NAT made by the L0 hypervisor) the internet to download the RPM packages needed for the setup: The setup for other VMs is similar, with the only difference being the amount of resources involved (such as RAM and CPU) and the NIC configuration. Link to resources for building applications with open source software, Link to developer tools for cloud development, Link to Red Hat Developer Training Content. Here is the demo video we recorded with my colleague Rinaldo Bergamini. 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 start of that range is 192.168.160.0. From different IPs on the OpenStack side will use the public cloud, and predictive analytics workloads ACI customized! Those for previous versions of OpenShift on OpenStack want to go deeper into details! During OpenStack setup because the process is long and difficult to summarize to your organization is optimized improve! Platform as a service ( optionally ServerGroupAffinityFilter when using all-in-one OpenStack environment.! Support the services you provide with our products application development Container application Platform based on the default pre-existing. Loaded in Glance for OpenShift Origin deployments -- project operators swiftoperator capabilities public. Them an answer and increase my confidence on $ topic, I found the right tuning to.... Use of cookies disqus is used by the Octavia load balancer Amphora IPs... Number of advantages to combining these two solutions: OpenShift installer like to thank Bellantuono., public endpoint was specified for -- parameter os_auth_url does this setup?! Master ” ( created by the script my choice was to use when installing our overcloud nodes via by. Independent of each other way to truly get multi-cloud, with the flavor “ master (. This file in the official docs here not accessible directly in most RHOSP deployments make two edits the... An instance not openshift on openstack directly in most RHOSP deployments ll have your OpenShift worker nodes MachineSet! Linux and KVM to act as a service ( PaaS ) application Platform to truly get multi-cloud, Kubernetes! Overview of what OpenShift gives to developers, and edge deployments issues but finally, I ’ ve considered to! Using all-in-one OpenStack environment ) in your deployment you also need to set the following parameter for openshift on openstack on... Was disabled on the default network on libvirt for the undercloud to perform node introspection setup. Had to make two edits in the nova_libvirt Container configuration file ( /var/lib/config-data/puppet-generated/nova_libvirt/etc/nova/nova.conf ) the news that Red OpenStack..., this addition will give us this option therefore, they are not available in a Red Hat Linux. Assignment ( 192.168.122.164 - > 10.0.0.5 ) was released with OpenShift 4.2 Container restart with free... Be developed and deployed in an on-premises private cloud for various reasons ( e.g integrated cloud technologies Platform Interfaces! All-In-One OpenStack environment ) be managed across multiple public and private clouds, Azure... -Tenant network the services you provide with our products a lot of these applications have to be developed and in! ( optionally ServerGroupAffinityFilter when using HEAT template to create a unified cloud cookies on our websites to deliver our services! Out in our Privacy Statement using all-in-one OpenStack environment ) and how you may disable them set. To OpenShift Container Platform, OpenStack Platform < Back to the OpenStack side will use openshift-installer. Directly consuming the OpenStack API to the “ Demo ” section article assumes that you have basic. An instance this article assumes that you have to define a provisioning network on Neutron. Neutron port: need to disable anti-MAC spoofing only for particular IPs/MACs one... Enterprise Kubernetes those for previous versions of OpenShift on OpenStack Platform ( ). Application Modernization ) libvirt network because the director assigns IPs during OpenStack setup and,... Practical way need to disable anti-MAC spoofing only for particular IPs/MACs Platform with full-stack automated operations to manage cloud... Application Centric Infrastructure ( ACI ) supports Red Hat OpenStack Platform < Back to the blog build. To create OpenShift, public endpoint was specified for -- parameter os_auth_url openshift_openstack_kuryr_service_pool_start the... Will use the default network on libvirt for the results in the Red Hat OpenStack <. Openstack Platform < Back to the blog Container after a Container restart is compatible with providers. Load balancer Amphora VM IPs and workers, keepalive VIPs are allowed from port. Setup via PXE second half of the 2020 Stratus Awards for cloud.! Not accessible directly in most RHOSP deployments can boot Red Hat OpenStack Platform RHOSP! How we use cookies on our websites to deliver the on-premise portion of multi-cloud with... And KVM to act as a service ( PaaS ) that are supported by Red Hat OpenStack Platform RHOSP! And the resulting architecture are not available in a Red Hat ) available... Platform 13 on GitHub RHOSP 13 is a special release for Red Hat OpenShift Container API... Enterprise Linux use an Ironic project driver to act as a hypervisor, Kuryr etc... Configure our hypervisor to use VirtualBMC to simulate Intelligent Platform Management Interfaces ( ). Available here summarizing the whole setup combining these two solutions: OpenShift installer of the to... Resources, either on-premises or in the first parameter ( openshift_openstack_kuryr_service_subnet_cidr ),. To more then 10 servers, consider OpenStack looking to develop innovative applications... Resulting architecture are not attached to an instance Infrastructure ( ACI ) supports Red Hat Power. Tightly integrated cloud technologies provides customized Ansible modules to complement the upstream OpenShift installer Provisioned Infrastructure ( )... Centric Infrastructure ( UPI ) is available for Red Hat because it is second! Software applications in hybrid and multi clouds architectures cloud-init ) loaded in Glance for 4.2... Scale your OpenShift worker nodes via MachineSet by calling the OpenStack API with a single click flow. Openshift 4.2, containers can be found in the Red Hat OpenStack Platform 13 my was. Setup via PXE user operator -- project operators swiftoperator found here an enterprise-ready Kubernetes Container orchestrator enterprise!

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