Hello sir, thank you so much for openshift videos. I wish i can give you 100 likes. You gave complete roadmap how to implement the openshift.Thank you so much .Your video has given me good ground to walk .Otherwise I was banging my head to understand the architecture design as to how APIs , ingress communicates with master nodes, worker nodes.
Welcome to our comprehensive step-by-step guide on installing OpenShift Cluster 4.13 on a single ESXi Host 8.0! If you're looking to set up a powerful and scalable container orchestration platform for your projects, you're in the right place. In this tutorial, we walk you through the entire installation process, making it easy for both beginners and experienced users to follow along. We'll cover everything from the initial setup to configuring your OpenShift Cluster for optimal performance. Key topics covered in this video: Preparing your ESXi Host environment Downloading and setting up OpenShift Cluster 4.13 Configuring essential settings for your cluster Tips and best practices for smooth operation Whether you're a developer, sysadmin, or just curious about OpenShift, this tutorial will give you the skills you need to get started with ease. Don't forget to like and subscribe for more tech tutorials and updates! If you have any questions or need further assistance, please leave a comment below. We're here to help you succeed with OpenShift Cluster 4.13! #OpenShift #ContainerOrchestration #ESXi #TechTutorial #DevOps #OpenShiftClusterInstallation #StepByStepGuide #OpenShift4.13 #ITInfrastructure #CloudNative #vmware #redhat #linux #vm #howto #cloud #install #lab Please refer to the following playlist for your review. Gnan Cloud Garage Playlists www.youtube.com/@gnancloudgar... VMware vSphere 7 & VMware vSphere Plus (+) | Data Center Virtualization th-cam.com/users/playlist?list... vSphere 7.x - Home lab - Quick Bytes | Data Center Virtualization th-cam.com/users/playlist?list... VMware vSphere 8 th-cam.com/users/playlist?list... VMware vSAN 8 th-cam.com/users/playlist?list... VMware NSX 4.x | Network Virtualization th-cam.com/users/playlist?list... VMware Cloud Foundation (VCF)+ th-cam.com/users/playlist?list... VMware Aria Automation (formerly, vRealize Automation) | Unified Multi-Cloud Management th-cam.com/users/playlist?list... Interview Preparation for Technical Consultants, Systems Engineers & Solution Architects th-cam.com/users/playlist?list... VMware Tanzu Portfolio | Application Modernization th-cam.com/users/playlist?list... Modern Data Protection Solutions th-cam.com/users/playlist?list... Storage, Software-Defined Storage (SDS) th-cam.com/users/playlist?list... Zerto, a Hewlett Packard Enterprise (HPE) Company th-cam.com/users/playlist?list... The Era of Multi-Cloud Services|HPE GreenLake Solutions|Solution Architectures|Solution Designs th-cam.com/users/playlist?list... Gnan Cloud Garage (GCG) - FAQs |Tools |Tech Talks th-cam.com/users/playlist?list... VMware Aria Operations (formerly, vROps) th-cam.com/users/playlist?list... PowerShell || VMware PowerCLI th-cam.com/users/playlist?list... Hewlett Packard Enterprise (HPE) Edge to Cloud Solutions & Services th-cam.com/users/playlist?list... DevOps || DevSecOps th-cam.com/users/playlist?list... Red Hat Openshift Container Platform (RH OCP) th-cam.com/users/playlist?list... Windows Server 2022 - Concepts th-cam.com/play/PLjsBan7CwU.html... Red Hat Enterprise Linux (RHEL) 9 - Concepts th-cam.com/users/playlist?list... Microsoft Azure Stack HCI th-cam.com/users/playlist?list... NVIDIA AI Enterprise th-cam.com/users/playlist?list... Gratitude | Thank you messages th-cam.com/users/playlist?list...
Typically, for an OpenShift helper node, the recommended requirements vary based on the specific workload and scale of your cluster. However, as a general guideline, you might consider the following: - CPU: At least 2 cores, but more if your workload is CPU-intensive. - RAM: Minimum of 8GB, though 16GB or more is recommended for smoother performance, especially if running multiple containers. - Disk: Around 30GB for the operating system and any additional software, plus additional space for container images and application data. (~120 GB to 150 GB) Remember, these are just starting points and can vary based on your specific use case.
I follow everything from this video, but my installation always failed during the boot.kube process.... And also, is the creating manifest and ignition-config is needed or not for OCP4.17? I really appreciate if you can solve my pain. Thank you...
Here are a few things to check that might help: 1. Logs from `bootkube`: The logs can provide more details about what’s causing the failure. Use `journalctl -u bootkube.service` to view them and identify specific errors. 2. Resource Requirements: Ensure that your master nodes meet the minimum requirements for OpenShift 4.17, as insufficient CPU or memory can cause the `bootkube` process to fail. 3. Network Configuration: Verify DNS and network configurations, especially if you’re using a custom setup. Network issues are a common cause of `bootkube` failures. 4. Manifests and Ignition Configs: For OCP 4.17, manifests and ignition files are automatically created by the OpenShift Installer. You usually don’t need to create them manually unless you’re performing an advanced or customized deployment.
Hello Sir, Nice explanation. Could you please help me with .YAML file config file content. I do see all the pre-requisites already updated in the file, little confuse during Install-Config.YAML. Please kindly help me to understand.
Hi Sir , Thank you for watching and for your kind words! 😊 I'd be happy to help with the install-config.yaml. This file is critical for defining the OpenShift cluster's configuration, like platform type, base domain, networking, and control plane details. If you're seeing all the prerequisites updated but are confused about specific sections, here are some key pointers: Platform Configuration: Ensure the platform section matches your infrastructure, like AWS, VMware, or bare metal. Networking: Double-check CIDR ranges for clusterNetwork and serviceNetwork to avoid conflicts. Control Plane and Compute Nodes: Verify the count, instance types, or sizes match your desired setup. Alternatively, you can refer to the official OpenShift documentation for examples tailored to different platforms.
Thanks for the video. The command "worker0" failed with some errors shown below. Please help ERROR Bootstrap failed to complete: timed out waiting for the condition ERROR Failed to wait for bootstrapping to complete. This error usually happens when there is a problem with control plane hosts that prevents the control plane operators from creating the control plane.
It seems the OpenShift cluster bootstrap process has failed due to a timeout in the control plane setup. This typically indicates an issue with the control plane hosts or their configuration. Here's how to troubleshoot and resolve the problem: 1. Check Bootstrap Node Logs - SSH into the bootstrap node and check the logs to identify the root cause of the issue: journalctl -b -f -u bootkube.service journalctl -b -f -u kubelet.service - Look for errors related to Kubernetes components such as `etcd`, `API server`, or `controller-manager`. 2. Validate Infrastructure - Ensure the control plane hosts (`master` nodes) meet the minimum requirements: - CPU, memory, and storage. - Proper network connectivity between bootstrap, control plane, and worker nodes. - Verify that DNS and load balancing are correctly configured: - Check that the `api.` and `*.apps.` records point to the correct IPs. - Confirm that the OpenShift installer can reach the control plane hosts. 3. Confirm Ignition Files - Ensure the ignition configuration files for the control plane nodes (`master`) are valid and accessible. - Inspect logs on the control plane nodes: journalctl -b -u ignition.service - Check for issues in the files generated by the installer in the `bootstrap` directory. 4. Verify etcd Cluster Health - The control plane depends on a healthy `etcd` cluster. Log in to the control plane nodes and check the etcd logs: journalctl -b -u etcd.service - Common issues include certificate mismatches or connectivity problems. 5. Networking Issues - Ensure that required ports are open between nodes: - Control Plane: Ports `6443` (API server), `2379-2380` (etcd). - Worker Nodes: Ports `10250`, `30000-32767` (kubelet, services). - Validate that the bootstrap node can communicate with the master nodes. 6. Gather Installer Logs - Inspect the `openshift-install` logs for detailed errors: openshift-install --dir= wait-for bootstrap-complete --log-level=debug 7. Common Causes to Check - Disk Latency: Ensure the disks on control plane nodes aren't experiencing high latency. - Time Sync: Ensure all nodes (bootstrap, control plane, workers) have synchronized system clocks (NTP). - Load Balancer Issues: Verify that the load balancer is forwarding traffic correctly to the control plane nodes. Next Steps - Address any specific errors found in the logs and retry the bootstrap process: openshift-install --dir= wait-for bootstrap-complete
Good walk thru of the setup and well documented, appreciate the sharing, One question what is your hardware used in the demo, If i have to simulate the same do i need a machine with 96 gb of memory, did I get that right ?
Hi Srk, My hardware setup for the demo is an INTEL NUC 11 with 64 GB of memory. You don't necessarily need 96 GB of memory to simulate the same environment. Depending on the complexity of your workloads and the number of virtual machines you plan to run, 64 GB should be sufficient. However, if you're planning to run more intensive simulations or multiple VMs simultaneously, having additional memory could be beneficial. Thank you
Hello! Thank you for your question. To prevent your system from using IPv6 and force it to use IPv4 without modifying the network, you can try the following: 1. Set IPv4 as the priority in your operating system: - On Windows, go to your network adapter properties and disable IPv6. - On Linux, edit the network configuration file (e.g., `/etc/sysctl.conf`) to disable IPv6 by adding the following lines: net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 Then, restart your network or system. 2. Specify IPv4 directly in configurations: If you are configuring applications or services, make sure to use IPv4 addresses explicitly instead of domain names that might resolve to IPv6. 3. Modify application or service settings: Some applications allow you to prioritize IPv4 over IPv6 in their internal settings.
Hi bro. sorry for disturbing you this time, i followed the procedure to deploy openshift 4.17 over vsphere , but i faced an issue, the process failed after deploying the master nodes, and the worker nodes didn't create. Can you help how can i know the issue
Hi Bro, No problem at all, and thanks for reaching out! The issue you’re facing with worker nodes not being created could be related to several factors, such as: Bootstrap Node Logs: Check the logs on the bootstrap node to identify any errors. The journalctl command can provide detailed insights: journalctl -u bootkube.service vSphere Configuration: Ensure that the resources (CPU, memory, and storage) allocated for the worker nodes are sufficient and match the requirements. Networking: Verify that the network configuration (DNS, DHCP, and load balancers) is set up correctly for both master and worker nodes. Installation Logs: Review the OpenShift installer logs (openshift-install.log) for more details on where the process is failing.
I assume your Router is not a DHCP server and your only DHCP server is your AD VM. Is that right? Seems this is the only way to get your DHCP requests answered by the VMs since its a flat network with everything on the same Subnet. If there was a 2nd DHCP server say running also on your Router, then this would cause issues with DHCP requests. Let me know if this is how you set it up. I can't see any other way. Good videos either way! Thanks!
Thank you for your comment and for watching the videos! Yes, in the setup I demonstrated, the router is not acting as a DHCP server. Instead, the DHCP server functionality is handled by the AD VM. This approach works well in a flat network where all devices are on the same subnet. Here is the correlated video for your review. th-cam.com/video/tb25fzQ3D3M/w-d-xo.html
Hi Amit Bhai, I am unable to offer online classes at the moment due to my busy office work schedule. However, I will continue to upload free content during my spare time. Thank you for expressing your interest and sending me an email. Please refer to the following playlist for your review. Gnan Cloud Garage Playlists www.youtube.com/@gnancloudgarage5238/playlists VMware vSphere 7 & VMware vSphere Plus (+) | Data Center Virtualization th-cam.com/play/PLjsBan7CwUQAFA9m2dYEL2FmeRdRiyWBD.html vSphere 7.x - Home lab - Quick Bytes | Data Center Virtualization th-cam.com/play/PLjsBan7CwUQBZi-xYgihJop0psqK6S8sb.html VMware vSphere 8 th-cam.com/play/PLjsBan7CwUQA9G1Fb27v9y6XhwjYgzVUy.html VMware vSAN 8 th-cam.com/play/PLjsBan7CwUQDB-ncpxViZfidlhHX7EhSE.html VMware NSX 4.x | Network Virtualization th-cam.com/play/PLjsBan7CwUQBJf9uEQ3dE22HquzTllXCd.html VMware Cloud Foundation (VCF)+ th-cam.com/play/PLjsBan7CwUQCjzyzI0iZZdf1v01ZLpL9Q.html VMware Aria Automation (formerly, vRealize Automation) | Unified Multi-Cloud Management th-cam.com/play/PLjsBan7CwUQDLH426kLQON-iVYWxIGAO1.html Interview Preparation for Technical Consultants, Systems Engineers & Solution Architects th-cam.com/play/PLjsBan7CwUQDEaC0BbothvP7WzY2cKv26.html VMware Tanzu Portfolio | Application Modernization th-cam.com/play/PLjsBan7CwUQCG1MHtPH-JIuvb851h0Luk.html Modern Data Protection Solutions th-cam.com/play/PLjsBan7CwUQCPj4P_a6k8pfTFLzRA-hGy.html Storage, Software-Defined Storage (SDS) th-cam.com/play/PLjsBan7CwUQB9m9W6gvWbr5xD8B4yEf8B.html Zerto, a Hewlett Packard Enterprise (HPE) Company th-cam.com/play/PLjsBan7CwUQBfQjbSbB4SKm_qTm5-tumo.html The Era of Multi-Cloud Services|HPE GreenLake Solutions|Solution Architectures|Solution Designs th-cam.com/play/PLjsBan7CwUQAfGjUuEYr1pYDBtrAmuuW7.html Gnan Cloud Garage (GCG) - FAQs |Tools |Tech Talks th-cam.com/play/PLjsBan7CwUQABniM-SAP02A0zzvAHq1m_.html VMware Aria Operations (formerly, vROps) th-cam.com/play/PLjsBan7CwUQD5q9xW5E7CD1uXuMnUUsMj.html PowerShell || VMware PowerCLI th-cam.com/play/PLjsBan7CwUQBIkdjpYNxmgZ27mPDNFgeD.html Hewlett Packard Enterprise (HPE) Edge to Cloud Solutions & Services th-cam.com/play/PLjsBan7CwUQDQOuihzMVCLaYVleYyHmdu.html DevOps || DevSecOps th-cam.com/play/PLjsBan7CwUQAFbpZ-rvmDDQxIhps6EN_i.html Red Hat Openshift Container Platform (RH OCP) th-cam.com/play/PLjsBan7CwUQCPmkx2rWj4xuF6LVFV8Fxl.html Windows Server 2022 - Concepts th-cam.com/play/PLjsBan7CwUQBEFXrQ9qdBxixl-uvjLEwY.html Red Hat Enterprise Linux (RHEL) 9 - Concepts th-cam.com/play/PLjsBan7CwUQCKohRN0k4h6-ilHdZQ-PHv.html Microsoft Azure Stack HCI th-cam.com/play/PLjsBan7CwUQD8yrIY-K-6G9yJ39zK_B2o.html NVIDIA AI Enterprise th-cam.com/play/PLjsBan7CwUQCczuCHXDu6WJS8UGVcf1xg.html Gratitude | Thank you messages th-cam.com/play/PLjsBan7CwUQAl2UeswWq4W-FqK-NisFVH.html All the Best! Best Regards Gnan
thank you sir for your explanation can you able to guide one by one step you checked in pre implementation section , implementation , post implementation section with cofiguration
Hi, Sir, Here are the corresponding video URLs for your review. Step-by-Step OpenShift 4.x Deployment Process: Prerequisites - vSphere 8 Infrastructure Validation th-cam.com/video/Tdb4nYkThZw/w-d-xo.htmlsi=9kvXu5MP0fZa1iGE Step-by-Step Red Hat OpenShift 4.x Deployment Process - Prerequisites - Configure DNS Records th-cam.com/video/XO4UxXsu138/w-d-xo.htmlsi=Bbxh459bsQJJ9aG1 Step-by-Step Red Hat OpenShift 4.x Deployment Process - Prerequisites - Configure DHCP Scope th-cam.com/video/tb25fzQ3D3M/w-d-xo.htmlsi=nm0xQn4VimzenpHt Step-by-Step OpenShift 4.x Deployment Process - Prerequisites - Download OpenShift Installer th-cam.com/video/BOgAYBXa3zg/w-d-xo.htmlsi=TTqmJ5p_WeoPCII2 Step-by-Step OpenShift 4.x | How to generate a Key Pair for the OpenShift cluster node’s SSH access? th-cam.com/video/0J5GKRly5ks/w-d-xo.htmlsi=jU8yZhwfe4hO2DiA Step-by-Step OpenShift 4.x | How to establish trust between vCenter 8 and OCP-helper VM? th-cam.com/video/NN5RSXpqti4/w-d-xo.htmlsi=Z2oV-S_JYgBxymK6 Step-by-Step OpenShift 4.x | How to create an “install-config.yaml” file in OCP-helper VM? th-cam.com/video/PjOzEZ2KbRM/w-d-xo.htmlsi=hzMl3OlHWcxKcJ7H How to install Red Hat OpenShift 4.x on vSphere 8 using IPI Method? | OCP 4.11 th-cam.com/video/lBVm-zLJTzo/w-d-xo.htmlsi=a4rnxNIbVDu3x1_5 Step-by-Step OpenShift 4.x Deployment Process | Post-Implementation Procedure | OCP 4.11 th-cam.com/video/ur9AFj3ePRs/w-d-xo.htmlsi=cphGp1QGpyWYAe3S How to Install an Application on RH OpenShift 4.11 using Web Console? | nginx th-cam.com/video/V5LAJgUOAW4/w-d-xo.htmlsi=A4B7q5jABgC-MMNF Thank you
In OpenShift's IPI (Installer-Provisioned Infrastructure) installation method, the sizes of the VMs (CPU, RAM, and disk space) are specified through the install-config.yaml file. This file contains details about the infrastructure, including the resource specifications for control plane (masters) and compute (workers) nodes. Steps to Specify VM Sizes: 1. Edit the `install-config.yaml` file: After generating the installation configuration file with the `openshift-install create install-config` command, you can specify the size of the VMs. Look for the `platform` section, which depends on the cloud provider (e.g., AWS, Azure, vSphere, etc.). Example for AWS: yaml platform: aws: type: m5.xlarge Example for vSphere: yaml platform: vsphere: cpus: 4 memoryMB: 16384 diskSizeGB: 120 - AWS/Cloud Platforms: The instance type (e.g., `m5.xlarge`) determines the VM size. - vSphere/Bare Metal: we can specify the CPU, memory, and disk sizes explicitly. 2. How Resources Are Allocated Automatically: If we do not specify sizes explicitly, the installer uses default settings based on the platform. These defaults are typically: - Control Plane Nodes (Masters): 4 vCPUs, 16 GB RAM, 120 GB disk. - Compute Nodes (Workers): 4 vCPUs, 16 GB RAM, 120 GB disk. 3. Customize VM Sizes (Platform-Specific): - AWS/GCP/Azure: Use the `type` field to set the instance type. - vSphere/Bare Metal: Define `cpus`, `memoryMB`, and `diskSizeGB` under the respective node group configuration. 4. Apply the Configuration: After editing the `install-config.yaml`, run the OpenShift installation process with the `openshift-install` tool. The installer will provision resources based on the specified configuration. Verify the VM Sizes Post-Deployment: - Once OpenShift is installed, we can verify the resource allocations by checking the VMs directly on our infrastructure platform (e.g., AWS Console, vSphere UI). - Additionally, check the nodes in OpenShift: oc get nodes oc describe node This approach ensures the VMs are configured according to our needs during the IPI installation process.
Thanks for this, How much time does it takes before the master nodes are assigned an IP. I followed your procedure, but the master nodes never gets an IP and hence they keep waiting for ignition files. DHCP is working as bootstrap node gets an IP and I can see the logs using journalctl.
Thanks for reaching out! The time it takes for master nodes to be assigned an IP can vary depending on several factors, including your network setup and infrastructure. If the master nodes are not getting an IP and are waiting for ignition files, there could be a few potential reasons for this issue: Network Configuration: Double-check your network configuration, especially the DHCP settings, to ensure that it's correctly configured for the installation. Firewall or Security Rules: Ensure that there are no firewall or security rules blocking the DHCP requests or responses for the master nodes. Resource Availability: Make sure you have sufficient resources available in your environment for the master nodes to be provisioned. Log Analysis: Review the logs on both the DHCP server and the master nodes to see if there are any error messages or issues that can provide more information about the problem. Good luck with your OpenShift installation!
Sure Bro, Will plan to do it. Thanks. Steps to Upgrade Red Hat OpenShift Cluster with Zero Downtime: 1.Pre-requisites: -Ensure Cluster is Highly Available (HA): - The control plane (masters) and worker nodes must be configured in a highly available architecture. - Ensure that applications are configured with replicas across multiple nodes to avoid service disruption. 2.Perform Health Checks: - Before starting the upgrade, verify the health of your cluster using `oc get nodes`, `oc get pods`, and other diagnostic commands. - Confirm that there are no critical alerts or failed components. 3.Backup Critical Data: - Take a full backup of the cluster configuration and any persistent data. - If using OpenShift with persistent storage, ensure volumes are backed up or snapshots are taken. 4.Upgrade Control Plane: - UseRed Hat OpenShift’s web console orCLI (oc adm upgrade) to start the upgrade process. - The upgrade will happen in a rolling fashion: control plane components (API servers, controllers) are updated one by one, maintaining service availability. 5.Upgrade Worker Nodes: - Worker nodes are updated one at a time. Pods running on each worker are drained and moved to other available nodes to ensure application availability. - This is done usingrolling upgrades for worker nodes, ensuring pods are rescheduled on other nodes to maintain the service. 6.Check and Validate Application Availability: - Ensure that applications are configured with adequate replicas and health checks to survive node drains. - Tools likehorizontal pod autoscaler (HPA) andreadiness probes ensure that the application remains up during node transitions. 7.Monitor the Upgrade Process: - Use OpenShift’s monitoring tools likePrometheus,Grafana, andcluster logging to ensure everything is running smoothly. - Ensure nodes are upgraded successfully without errors and that pods are rescheduled properly. 8.Post-Upgrade Validation: - Once the upgrade is complete, validate that all nodes are running the new version (`oc get nodes`), and applications are functioning as expected. - Perform smoke testing of critical services to ensure zero downtime. 9.Rollback Plan: - If issues arise during the upgrade, use OpenShift’s rollback features or backups to restore the previous cluster state.
im trying to install a SNO cluster using the agent based method on vsphere which you need a local repo for as well. but isnt going to well the cluster just doesn't build not sure why.
Here are some troubleshooting steps and checks you can perform to help identify the issue: Troubleshooting Steps Verify Local Repository: Make sure your local repository is correctly configured and accessible from the nodes. Check the repository URL in your install-config.yaml file and ensure it points to the correct location. Check Network Connectivity: Ensure that all nodes have proper network access to the local repo and vSphere environment. Verify that there are no firewall rules or network issues blocking access. Inspect Logs: Check the installation logs for any errors or warnings. You can find these logs on the installer VM or in the openshift-installer directory. Look for log files like openshift-install.log or installer-bootstrap.log for detailed error messages. Verify Configuration Files: Double-check your install-config.yaml file for any misconfigurations. Ensure all necessary fields are correctly filled out, especially those related to the local repository and vSphere configurations. Check vSphere Configuration: Make sure that your vSphere environment is correctly set up for the OpenShift deployment. Verify that the resources (CPU, memory, storage) are adequate for the SNO cluster. Update OpenShift Installer: Ensure you are using the latest version of the OpenShift installer. An outdated installer might have bugs or compatibility issues.
@@gnancloudgarage i had a system wide proxy set on the machine i used to create the image and monitor the installl so i couldnt see progress when kicking of the agent install on the vsphere vm. My platform is none as well since its an sno node also u need to make sure the uuid is set to true for the disk otherwise the disks cannot be used and install wont go ahead.
To connect to an OpenShift 4.x cluster and its nodes (both worker and master) via the command line, follow these steps: Prerequisites: 1. OpenShift CLI (oc): Make sure you have the OpenShift CLI (`oc`) installed on your local machine. 2. Access Credentials: Ensure you have the necessary access credentials and the URL of the OpenShift API server. 1. Connecting to the OpenShift Cluster 1. Log in to the OpenShift Cluster: Use the `oc login` command to authenticate to the OpenShift cluster. You'll need the API server URL and a token or username/password. oc login api.:6443 --token= Or, if using username and password: oc login api.:6443 --username= --password= Replace `` with your cluster's domain, ``, ``, and `` with your credentials. 2. Verify Connection: Check that you are connected to the cluster and view cluster information: oc cluster-info This should return information about your cluster. 2. Accessing Nodes (Worker and Master) 1. Listing Nodes: To list all nodes (including master and worker nodes): oc get nodes 2. Accessing Nodes: You generally connect to the nodes directly using SSH if you need to perform tasks on the nodes. The OpenShift CLI does not provide direct SSH capabilities to the nodes, but you can use `ssh` if you have the necessary access: ssh @ Replace `` with the appropriate username and `` with the IP address of the node you want to access. 3. Connecting to Pods 1. List Pods: To see which pods are running in a namespace: oc get pods -n Replace `` with the name of your namespace. To list pods in all namespaces, omit the `-n ` option. 2. Access a Pod: To access a specific pod's terminal: oc exec -it -n -- /bin/bash Replace `` with the name of the pod and `` with the namespace where the pod is running. 4. Viewing Logs 1. View Logs for a Pod: oc logs -n You can add `--previous` to view logs from a previous instance of the container if applicable. Additional Notes: - Make sure you have the necessary permissions to access nodes and perform actions. - Access to nodes via SSH depends on your cluster setup and the security policies in place. - For cluster management tasks that involve nodes, you might use tools like Ansible or Kubernetes management tools. This should cover basic connections to your OpenShift 4.x cluster and its nodes using the command line.
Hi, We can get it from Red hat website. Red Hat OpenShift Deployment: Pre-Implementation Steps Prepare the Action Plan with step-by-step Instructions of Compute, Network & Storage ESXi 8, vCenter 8.0 Windows 2022 VM with AD, DNS, DHCP RHEL 8.x Helper VM Join all Systems to Base Domain Create a Domain Admin Account for vCenter Configure DNS records for OpenShift Cluster Configure DHCP Scope for OpenShift Cluster Nodes Download OpenShift Installer Implementation Procedure Generating a Key Pair for OpenShift Cluster node SSH access Adding vCenter root CA Certificates to OpenShift Helper VM to establish Trust Create a Working directory on Helper VM Extract the OpenShift-installer in a present working directory Create the Install-Config.YAML Deploy the OpenShift Cluster Creating Infrastructure Resources using Bastion Node Monitor until the OpenShift Cluster Install Complete Post-Implementation Procedure Access the OpenShift web console Production Cluster Ready Day-2 Install Operations Administrative/ Cluster Lifecycle Production Workloads Scale-out Worker Nodes
Hi Abhijeet Sir, I am unable to offer online classes at the moment due to my busy office work schedule. However, I will continue to upload free content during my spare time. Please refer to the following playlist for your review. Red Hat Openshift Container Platform (RH OCP) th-cam.com/play/PLjsBan7CwUQCPmkx2rWj4xuF6LVFV8Fxl.html Gnan Cloud Garage Playlists www.youtube.com/@gnancloudgarage5238/playlists All the Best! Best Regards Gnan
May I ask do you need to install any software LB for API and ingress? As I cannot connect and pull api, it always mentions about no route or host in the logs. It would be helpful if you share your opinion on this.
Hi, We don't need to install any software Load Balancer (LB) for API and Ingress. However, please ensure that our OpenShift helper node or bastion has a stable internet connection. Thank you
Hello sir, thank you so much for openshift videos. I wish i can give you 100 likes. You gave complete roadmap how to implement the openshift.Thank you so much .Your video has given me good ground to walk .Otherwise I was banging my head to understand the architecture design as to how APIs , ingress communicates with master nodes, worker nodes.
You're very welcome Sir! I'm glad the videos are helping you get a good grasp of the architecture. Thank you for your kind words Sir:-)
Thanks for better explanation. Nice explanation.
Thank you
Welcome to our comprehensive step-by-step guide on installing OpenShift Cluster 4.13 on a single ESXi Host 8.0!
If you're looking to set up a powerful and scalable container orchestration platform for your projects, you're in the right place.
In this tutorial, we walk you through the entire installation process, making it easy for both beginners and experienced users to follow along. We'll cover everything from the initial setup to configuring your OpenShift Cluster for optimal performance.
Key topics covered in this video:
Preparing your ESXi Host environment
Downloading and setting up OpenShift Cluster 4.13
Configuring essential settings for your cluster
Tips and best practices for smooth operation
Whether you're a developer, sysadmin, or just curious about OpenShift, this tutorial will give you the skills you need to get started with ease. Don't forget to like and subscribe for more tech tutorials and updates!
If you have any questions or need further assistance, please leave a comment below. We're here to help you succeed with OpenShift Cluster 4.13!
#OpenShift #ContainerOrchestration #ESXi #TechTutorial #DevOps #OpenShiftClusterInstallation #StepByStepGuide #OpenShift4.13 #ITInfrastructure #CloudNative
#vmware #redhat #linux #vm #howto #cloud #install #lab
Please refer to the following playlist for your review.
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VMware Aria Automation (formerly, vRealize Automation) | Unified Multi-Cloud Management
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Interview Preparation for Technical Consultants, Systems Engineers & Solution Architects
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Modern Data Protection Solutions
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Storage, Software-Defined Storage (SDS)
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Zerto, a Hewlett Packard Enterprise (HPE) Company
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The Era of Multi-Cloud Services|HPE GreenLake Solutions|Solution Architectures|Solution Designs
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Gnan Cloud Garage (GCG) - FAQs |Tools |Tech Talks
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VMware Aria Operations (formerly, vROps)
th-cam.com/users/playlist?list...
PowerShell || VMware PowerCLI
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Hewlett Packard Enterprise (HPE) Edge to Cloud Solutions & Services
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DevOps || DevSecOps
th-cam.com/users/playlist?list...
Red Hat Openshift Container Platform (RH OCP)
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Windows Server 2022 - Concepts
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Red Hat Enterprise Linux (RHEL) 9 - Concepts
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Microsoft Azure Stack HCI
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NVIDIA AI Enterprise
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Gratitude | Thank you messages
th-cam.com/users/playlist?list...
Very well explained video? Is this IPI method
@@firehot57 Yes it was IPI method.
Thank you for the video.
What are the recommended requirements for a helper node?
Cpu, ram, disk?
Typically, for an OpenShift helper node, the recommended requirements vary based on the specific workload and scale of your cluster.
However, as a general guideline, you might consider the following:
- CPU: At least 2 cores, but more if your workload is CPU-intensive.
- RAM: Minimum of 8GB, though 16GB or more is recommended for smoother performance, especially if running multiple containers.
- Disk: Around 30GB for the operating system and any additional software, plus additional space for container images and application data. (~120 GB to 150 GB)
Remember, these are just starting points and can vary based on your specific use case.
wow, you are very quick ) Thank you!
@@archimail You're welcome
I follow everything from this video, but my installation always failed during the boot.kube process.... And also, is the creating manifest and ignition-config is needed or not for OCP4.17? I really appreciate if you can solve my pain. Thank you...
Here are a few things to check that might help:
1. Logs from `bootkube`:
The logs can provide more details about what’s causing the failure. Use `journalctl -u bootkube.service` to view them and identify specific errors.
2. Resource Requirements:
Ensure that your master nodes meet the minimum requirements for OpenShift 4.17, as insufficient CPU or memory can cause the `bootkube` process to fail.
3. Network Configuration:
Verify DNS and network configurations, especially if you’re using a custom setup. Network issues are a common cause of `bootkube` failures.
4. Manifests and Ignition Configs:
For OCP 4.17, manifests and ignition files are automatically created by the OpenShift Installer. You usually don’t need to create them manually unless you’re performing an advanced or customized deployment.
Hello Sir, Nice explanation. Could you please help me with .YAML file config file content. I do see all the pre-requisites already updated in the file, little confuse during Install-Config.YAML. Please kindly help me to understand.
Hi Sir , Thank you for watching and for your kind words! 😊 I'd be happy to help with the install-config.yaml.
This file is critical for defining the OpenShift cluster's configuration, like platform type, base domain, networking, and control plane details.
If you're seeing all the prerequisites updated but are confused about specific sections, here are some key pointers:
Platform Configuration:
Ensure the platform section matches your infrastructure, like AWS, VMware, or bare metal.
Networking:
Double-check CIDR ranges for clusterNetwork and serviceNetwork to avoid conflicts.
Control Plane and Compute Nodes:
Verify the count, instance types, or sizes match your desired setup.
Alternatively, you can refer to the official OpenShift documentation for examples tailored to different platforms.
Thanks for the video. The command "worker0" failed with some errors shown below. Please help
ERROR Bootstrap failed to complete: timed out waiting for the condition
ERROR Failed to wait for bootstrapping to complete. This error usually happens when there is a problem with control plane hosts that prevents the control plane operators from creating the control plane.
It seems the OpenShift cluster bootstrap process has failed due to a timeout in the control plane setup. This typically indicates an issue with the control plane hosts or their configuration.
Here's how to troubleshoot and resolve the problem:
1. Check Bootstrap Node Logs
- SSH into the bootstrap node and check the logs to identify the root cause of the issue:
journalctl -b -f -u bootkube.service
journalctl -b -f -u kubelet.service
- Look for errors related to Kubernetes components such as `etcd`, `API server`, or `controller-manager`.
2. Validate Infrastructure
- Ensure the control plane hosts (`master` nodes) meet the minimum requirements:
- CPU, memory, and storage.
- Proper network connectivity between bootstrap, control plane, and worker nodes.
- Verify that DNS and load balancing are correctly configured:
- Check that the `api.` and `*.apps.` records point to the correct IPs.
- Confirm that the OpenShift installer can reach the control plane hosts.
3. Confirm Ignition Files
- Ensure the ignition configuration files for the control plane nodes (`master`) are valid and accessible.
- Inspect logs on the control plane nodes:
journalctl -b -u ignition.service
- Check for issues in the files generated by the installer in the `bootstrap` directory.
4. Verify etcd Cluster Health
- The control plane depends on a healthy `etcd` cluster. Log in to the control plane nodes and check the etcd logs:
journalctl -b -u etcd.service
- Common issues include certificate mismatches or connectivity problems.
5. Networking Issues
- Ensure that required ports are open between nodes:
- Control Plane: Ports `6443` (API server), `2379-2380` (etcd).
- Worker Nodes: Ports `10250`, `30000-32767` (kubelet, services).
- Validate that the bootstrap node can communicate with the master nodes.
6. Gather Installer Logs
- Inspect the `openshift-install` logs for detailed errors:
openshift-install --dir= wait-for bootstrap-complete --log-level=debug
7. Common Causes to Check
- Disk Latency: Ensure the disks on control plane nodes aren't experiencing high latency.
- Time Sync: Ensure all nodes (bootstrap, control plane, workers) have synchronized system clocks (NTP).
- Load Balancer Issues: Verify that the load balancer is forwarding traffic correctly to the control plane nodes.
Next Steps
- Address any specific errors found in the logs and retry the bootstrap process:
openshift-install --dir= wait-for bootstrap-complete
Good walk thru of the setup and well documented, appreciate the sharing, One question what is your hardware used in the demo, If i have to simulate the same do i need a machine with 96 gb of memory, did I get that right ?
Hi Srk,
My hardware setup for the demo is an INTEL NUC 11 with 64 GB of memory. You don't necessarily need 96 GB of memory to simulate the same environment. Depending on the complexity of your workloads and the number of virtual machines you plan to run, 64 GB should be sufficient. However, if you're planning to run more intensive simulations or multiple VMs simultaneously, having additional memory could be beneficial.
Thank you
Como puedo evitar que use ipv6 ? No puedo modificar la red, hay alguna configuración para que tome ipv4?
Hello!
Thank you for your question.
To prevent your system from using IPv6 and force it to use IPv4 without modifying the network, you can try the following:
1. Set IPv4 as the priority in your operating system:
- On Windows, go to your network adapter properties and disable IPv6.
- On Linux, edit the network configuration file (e.g., `/etc/sysctl.conf`) to disable IPv6 by adding the following lines:
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
Then, restart your network or system.
2. Specify IPv4 directly in configurations: If you are configuring applications or services, make sure to use IPv4 addresses explicitly instead of domain names that might resolve to IPv6.
3. Modify application or service settings: Some applications allow you to prioritize IPv4 over IPv6 in their internal settings.
thats great Brother
Thank you Brother
Hi bro.
sorry for disturbing you this time, i followed the procedure to deploy openshift 4.17 over vsphere , but i faced an issue, the process failed after deploying the master nodes, and the worker nodes didn't create.
Can you help how can i know the issue
Hi Bro,
No problem at all, and thanks for reaching out!
The issue you’re facing with worker nodes not being created could be related to several factors, such as:
Bootstrap Node Logs:
Check the logs on the bootstrap node to identify any errors. The journalctl command can provide detailed insights:
journalctl -u bootkube.service
vSphere Configuration:
Ensure that the resources (CPU, memory, and storage) allocated for the worker nodes are sufficient and match the requirements.
Networking:
Verify that the network configuration (DNS, DHCP, and load balancers) is set up correctly for both master and worker nodes.
Installation Logs:
Review the OpenShift installer logs (openshift-install.log) for more details on where the process is failing.
Very good
Thanks
I assume your Router is not a DHCP server and your only DHCP server is your AD VM. Is that right? Seems this is the only way to get your DHCP requests answered by the VMs since its a flat network with everything on the same Subnet. If there was a 2nd DHCP server say running also on your Router, then this would cause issues with DHCP requests.
Let me know if this is how you set it up. I can't see any other way.
Good videos either way! Thanks!
Thank you for your comment and for watching the videos!
Yes, in the setup I demonstrated, the router is not acting as a DHCP server. Instead, the DHCP server functionality is handled by the AD VM. This approach works well in a flat network where all devices are on the same subnet.
Here is the correlated video for your review. th-cam.com/video/tb25fzQ3D3M/w-d-xo.html
Bhai Online class bhi start kar do, bahut sahi padhate ho dost
Hi Amit Bhai,
I am unable to offer online classes at the moment due to my busy office work schedule.
However, I will continue to upload free content during my spare time.
Thank you for expressing your interest and sending me an email.
Please refer to the following playlist for your review.
Gnan Cloud Garage Playlists
www.youtube.com/@gnancloudgarage5238/playlists
VMware vSphere 7 & VMware vSphere Plus (+) | Data Center Virtualization
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VMware Aria Automation (formerly, vRealize Automation) | Unified Multi-Cloud Management
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VMware Tanzu Portfolio | Application Modernization
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Storage, Software-Defined Storage (SDS)
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Gnan Cloud Garage (GCG) - FAQs |Tools |Tech Talks
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VMware Aria Operations (formerly, vROps)
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Windows Server 2022 - Concepts
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All the Best!
Best Regards
Gnan
thank you sir for your explanation can you able to guide one by one step you checked in pre implementation section , implementation , post implementation section with
cofiguration
Hi, Sir,
Here are the corresponding video URLs for your review.
Step-by-Step OpenShift 4.x Deployment Process: Prerequisites - vSphere 8 Infrastructure Validation
th-cam.com/video/Tdb4nYkThZw/w-d-xo.htmlsi=9kvXu5MP0fZa1iGE
Step-by-Step Red Hat OpenShift 4.x Deployment Process - Prerequisites - Configure DNS Records
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Step-by-Step Red Hat OpenShift 4.x Deployment Process - Prerequisites - Configure DHCP Scope
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Step-by-Step OpenShift 4.x Deployment Process - Prerequisites - Download OpenShift Installer
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Step-by-Step OpenShift 4.x | How to generate a Key Pair for the OpenShift cluster node’s SSH access?
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Step-by-Step OpenShift 4.x | How to establish trust between vCenter 8 and OCP-helper VM?
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Step-by-Step OpenShift 4.x | How to create an “install-config.yaml” file in OCP-helper VM?
th-cam.com/video/PjOzEZ2KbRM/w-d-xo.htmlsi=hzMl3OlHWcxKcJ7H
How to install Red Hat OpenShift 4.x on vSphere 8 using IPI Method? | OCP 4.11
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Thank you
where / how we are specfice the vm size like cpu, ram and disk space? How it takes 4 cpu, 16GB ram and 120GB disk?
In OpenShift's IPI (Installer-Provisioned Infrastructure) installation method, the sizes of the VMs (CPU, RAM, and disk space) are specified through the install-config.yaml file. This file contains details about the infrastructure, including the resource specifications for control plane (masters) and compute (workers) nodes.
Steps to Specify VM Sizes:
1. Edit the `install-config.yaml` file:
After generating the installation configuration file with the `openshift-install create install-config` command, you can specify the size of the VMs.
Look for the `platform` section, which depends on the cloud provider (e.g., AWS, Azure, vSphere, etc.).
Example for AWS:
yaml
platform:
aws:
type: m5.xlarge
Example for vSphere:
yaml
platform:
vsphere:
cpus: 4
memoryMB: 16384
diskSizeGB: 120
- AWS/Cloud Platforms: The instance type (e.g., `m5.xlarge`) determines the VM size.
- vSphere/Bare Metal: we can specify the CPU, memory, and disk sizes explicitly.
2. How Resources Are Allocated Automatically:
If we do not specify sizes explicitly, the installer uses default settings based on the platform. These defaults are typically:
- Control Plane Nodes (Masters): 4 vCPUs, 16 GB RAM, 120 GB disk.
- Compute Nodes (Workers): 4 vCPUs, 16 GB RAM, 120 GB disk.
3. Customize VM Sizes (Platform-Specific):
- AWS/GCP/Azure: Use the `type` field to set the instance type.
- vSphere/Bare Metal: Define `cpus`, `memoryMB`, and `diskSizeGB` under the respective node group configuration.
4. Apply the Configuration:
After editing the `install-config.yaml`, run the OpenShift installation process with the `openshift-install` tool. The installer will provision resources based on the specified configuration.
Verify the VM Sizes Post-Deployment:
- Once OpenShift is installed, we can verify the resource allocations by checking the VMs directly on our infrastructure platform (e.g., AWS Console, vSphere UI).
- Additionally, check the nodes in OpenShift:
oc get nodes
oc describe node
This approach ensures the VMs are configured according to our needs during the IPI installation process.
@@gnancloudgarage Thanks for your response 😍 Nice explanation.
@@chandar992 Most welcome 😍
Thanks for this, How much time does it takes before the master nodes are assigned an IP. I followed your procedure, but the master nodes never gets an IP and hence they keep waiting for ignition files. DHCP is working as bootstrap node gets an IP and I can see the logs using journalctl.
Thanks for reaching out!
The time it takes for master nodes to be assigned an IP can vary depending on several factors, including your network setup and infrastructure.
If the master nodes are not getting an IP and are waiting for ignition files, there could be a few potential reasons for this issue:
Network Configuration: Double-check your network configuration, especially the DHCP settings, to ensure that it's correctly configured for the installation.
Firewall or Security Rules: Ensure that there are no firewall or security rules blocking the DHCP requests or responses for the master nodes.
Resource Availability: Make sure you have sufficient resources available in your environment for the master nodes to be provisioned.
Log Analysis: Review the logs on both the DHCP server and the master nodes to see if there are any error messages or issues that can provide more information about the problem.
Good luck with your OpenShift installation!
Bro please make some vedios on upgrading openshift cluster to latest version with zero down time
Sure Bro, Will plan to do it. Thanks.
Steps to Upgrade Red Hat OpenShift Cluster with Zero Downtime:
1.Pre-requisites:
-Ensure Cluster is Highly Available (HA):
- The control plane (masters) and worker nodes must be configured in a highly available architecture.
- Ensure that applications are configured with replicas across multiple nodes to avoid service disruption.
2.Perform Health Checks:
- Before starting the upgrade, verify the health of your cluster using `oc get nodes`, `oc get pods`, and other diagnostic commands.
- Confirm that there are no critical alerts or failed components.
3.Backup Critical Data:
- Take a full backup of the cluster configuration and any persistent data.
- If using OpenShift with persistent storage, ensure volumes are backed up or snapshots are taken.
4.Upgrade Control Plane:
- UseRed Hat OpenShift’s web console orCLI (oc adm upgrade) to start the upgrade process.
- The upgrade will happen in a rolling fashion: control plane components (API servers, controllers) are updated one by one, maintaining service availability.
5.Upgrade Worker Nodes:
- Worker nodes are updated one at a time. Pods running on each worker are drained and moved to other available nodes to ensure application availability.
- This is done usingrolling upgrades for worker nodes, ensuring pods are rescheduled on other nodes to maintain the service.
6.Check and Validate Application Availability:
- Ensure that applications are configured with adequate replicas and health checks to survive node drains.
- Tools likehorizontal pod autoscaler (HPA) andreadiness probes ensure that the application remains up during node transitions.
7.Monitor the Upgrade Process:
- Use OpenShift’s monitoring tools likePrometheus,Grafana, andcluster logging to ensure everything is running smoothly.
- Ensure nodes are upgraded successfully without errors and that pods are rescheduled properly.
8.Post-Upgrade Validation:
- Once the upgrade is complete, validate that all nodes are running the new version (`oc get nodes`), and applications are functioning as expected.
- Perform smoke testing of critical services to ensure zero downtime.
9.Rollback Plan:
- If issues arise during the upgrade, use OpenShift’s rollback features or backups to restore the previous cluster state.
im trying to install a SNO cluster using the agent based method on vsphere which you need a local repo for as well. but isnt going to well the cluster just doesn't build not sure why.
Here are some troubleshooting steps and checks you can perform to help identify the issue:
Troubleshooting Steps
Verify Local Repository:
Make sure your local repository is correctly configured and accessible from the nodes.
Check the repository URL in your install-config.yaml file and ensure it points to the correct location.
Check Network Connectivity:
Ensure that all nodes have proper network access to the local repo and vSphere environment.
Verify that there are no firewall rules or network issues blocking access.
Inspect Logs:
Check the installation logs for any errors or warnings. You can find these logs on the installer VM or in the openshift-installer directory.
Look for log files like openshift-install.log or installer-bootstrap.log for detailed error messages.
Verify Configuration Files:
Double-check your install-config.yaml file for any misconfigurations.
Ensure all necessary fields are correctly filled out, especially those related to the local repository and vSphere configurations.
Check vSphere Configuration:
Make sure that your vSphere environment is correctly set up for the OpenShift deployment.
Verify that the resources (CPU, memory, storage) are adequate for the SNO cluster.
Update OpenShift Installer:
Ensure you are using the latest version of the OpenShift installer. An outdated installer might have bugs or compatibility issues.
@@gnancloudgarage i had a system wide proxy set on the machine i used to create the image and monitor the installl so i couldnt see progress when kicking of the agent install on the vsphere vm. My platform is none as well since its an sno node also u need to make sure the uuid is set to true for the disk otherwise the disks cannot be used and install wont go ahead.
Please let me know where did you saved the spreadsheet
Hi, I didn't save the spreadsheet anywhere. Thanks
Can you please paste the sample install-config for this installation
apiVersion: v1
baseDomain: example.com
metadata:
name: my-cluster
compute:
- name: worker
replicas: 3
platform: {}
controlPlane:
name: master
replicas: 3
platform: {}
networking:
networkType: OpenShiftSDN
clusterNetwork:
- cidr: 10.128.0.0/14
hostPrefix: 23
serviceNetwork:
- 172.30.0.0/16
machineNetwork:
- cidr: 192.168.0.0/24
platform:
none: {}
pullSecret: '{"auths":{"cloud.openshift.com":{"auth":"","email":"you@example.com"}}}'
sshKey: |
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCyA... user@example.com
fips: false
How to connect this VM to the command line
To connect to an OpenShift 4.x cluster and its nodes (both worker and master) via the command line, follow these steps:
Prerequisites:
1. OpenShift CLI (oc): Make sure you have the OpenShift CLI (`oc`) installed on your local machine.
2. Access Credentials: Ensure you have the necessary access credentials and the URL of the OpenShift API server.
1. Connecting to the OpenShift Cluster
1. Log in to the OpenShift Cluster:
Use the `oc login` command to authenticate to the OpenShift cluster. You'll need the API server URL and a token or username/password.
oc login api.:6443 --token=
Or, if using username and password:
oc login api.:6443 --username= --password=
Replace `` with your cluster's domain, ``, ``, and `` with your credentials.
2. Verify Connection:
Check that you are connected to the cluster and view cluster information:
oc cluster-info
This should return information about your cluster.
2. Accessing Nodes (Worker and Master)
1. Listing Nodes:
To list all nodes (including master and worker nodes):
oc get nodes
2. Accessing Nodes:
You generally connect to the nodes directly using SSH if you need to perform tasks on the nodes. The OpenShift CLI does not provide direct SSH capabilities to the nodes, but you can use `ssh` if you have the necessary access:
ssh @
Replace `` with the appropriate username and `` with the IP address of the node you want to access.
3. Connecting to Pods
1. List Pods:
To see which pods are running in a namespace:
oc get pods -n
Replace `` with the name of your namespace. To list pods in all namespaces, omit the `-n ` option.
2. Access a Pod:
To access a specific pod's terminal:
oc exec -it -n -- /bin/bash
Replace `` with the name of the pod and `` with the namespace where the pod is running.
4. Viewing Logs
1. View Logs for a Pod:
oc logs -n
You can add `--previous` to view logs from a previous instance of the container if applicable.
Additional Notes:
- Make sure you have the necessary permissions to access nodes and perform actions.
- Access to nodes via SSH depends on your cluster setup and the security policies in place.
- For cluster management tasks that involve nodes, you might use tools like Ansible or Kubernetes management tools.
This should cover basic connections to your OpenShift 4.x cluster and its nodes using the command line.
hi
how to download action paln & ...
Hi,
We can get it from Red hat website.
Red Hat OpenShift Deployment:
Pre-Implementation Steps
Prepare the Action Plan with step-by-step Instructions of Compute, Network & Storage
ESXi 8, vCenter 8.0
Windows 2022 VM with AD, DNS, DHCP
RHEL 8.x Helper VM
Join all Systems to Base Domain
Create a Domain Admin Account for vCenter
Configure DNS records for OpenShift Cluster
Configure DHCP Scope for OpenShift Cluster Nodes
Download OpenShift Installer
Implementation Procedure
Generating a Key Pair for OpenShift Cluster node SSH access
Adding vCenter root CA Certificates to OpenShift Helper VM to establish Trust
Create a Working directory on Helper VM
Extract the OpenShift-installer in a present working directory
Create the Install-Config.YAML
Deploy the OpenShift Cluster
Creating Infrastructure Resources using Bastion Node
Monitor until the OpenShift Cluster Install Complete
Post-Implementation Procedure
Access the OpenShift web console
Production Cluster Ready
Day-2 Install Operations
Administrative/ Cluster Lifecycle
Production Workloads
Scale-out Worker Nodes
sir can u take online class openshift
plz confirm
Hi Abhijeet Sir,
I am unable to offer online classes at the moment due to my busy office work schedule.
However, I will continue to upload free content during my spare time.
Please refer to the following playlist for your review.
Red Hat Openshift Container Platform (RH OCP)
th-cam.com/play/PLjsBan7CwUQCPmkx2rWj4xuF6LVFV8Fxl.html
Gnan Cloud Garage Playlists
www.youtube.com/@gnancloudgarage5238/playlists
All the Best!
Best Regards
Gnan
Sir Help with all series from scratch sir it is request @@gnancloudgarage
May I ask do you need to install any software LB for API and ingress? As I cannot connect and pull api, it always mentions about no route or host in the logs. It would be helpful if you share your opinion on this.
Hi,
We don't need to install any software Load Balancer (LB) for API and Ingress.
However, please ensure that our OpenShift helper node or bastion has a stable internet connection.
Thank you