Installing and configuring the OpenShift API for Data Protection with OpenShift Container Storage". Do not. Admins can use a single command to complete the restoration process, although there is additional work required to bring the new ETCD database online. Setting podsPerCore to 0 disables this limit. 5. With the backup of ETCD done, the next steps will be essential for a successful recovery. You can use one healthy etcd node to form a new cluster, but you must remove all other healthy nodes. openshift. sh script is backward compatible to accept this single file, which must be in the format of snapshot_db_kuberesources_<datetimestamp>. Delete and recreate the control plane machine (also known as the master machine). Before you begin You need to have a Kubernetes. 1 - OpenShift master - OpenShift node - Etcd (Embedded) - Storage Total OpenShift masters: 1 Total OpenShift nodes: 1 --- We have detected this previously installed OpenShift environment. openshift. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. 10. ec2. Replacing an unhealthy etcd member. To find the created cron job, run the following command: $ oc get cronjob -n openshift-etcd. Chapter 3. An etcd backup plays a crucial role in disaster recovery. internal. OpenShift Container Platform is designed to lock down Kubernetes security and integrate the platform with a variety of extended components. 7. In OpenShift Container Platform, you can perform a graceful shutdown of a cluster so that you can easily restart the cluster later. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. The cluster refuses to start on account of the certs expiring. If you run etcd as static pods on your master nodes, you stop the. You have access to the cluster as a user with the cluster-admin role. The OpenShift OAuth server is managed by the cluster authentication operator. Reinstall OpenShift Enterprise. io/v1alpha1] ImagePruner [imageregistry. As part of the process to back up etcd for a hosted cluster, you take a snapshot of etcd. operator. When you restore etcd, OpenShift Container Platform starts launching the previous pods on nodes and reattaching the same storage. 2. OpenShift Container Platform 4. It is important to take an etcd backup before performing this procedure so that your cluster can be restored if you encounter any issues. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. Do not take an etcd backup before the first certificate rotation completes, which occurs 24 hours after installation, otherwise the backup will contain expired certificates. kubectl exec -it contrail-etcd-xxx -c contrail-etcd -n contrail-system sh. Provide the path to the new pull secret file. Provision as. The fastest way for developers to build, host and scale applications in the public cloud. It is important to take an etcd backup before performing this procedure so that your cluster can be restored if you encounter any issues when restarting the cluster. In OpenShift Container Platform, you can also replace an unhealthy etcd member. 2021-10-18 17:48:46 UTC. You should only save a snapshot from a single master host. etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. 5, the master now connects to etcd via IP address. Users only need to specify the backup policy. You can check the list of backups that are currently recognized by the cluster to. Application backup and restore operations Expand section "1. tar. 10. internal. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. 1, then it is a single file that contains the etcd snapshot and static Kubernetes API server resources. openshift. Etcd [operator. cluster. The API exposes two user-facing resources: HostedCluster and NodePool. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. etcd는 kubernetes에서 사용되는 모든 정보들이 저장되어 있는 key/value 기반의 database 이다. For more information, see CSI volume snapshots. 第1章 etcd のバックアップ. This procedure assumes that you gracefully shut down the cluster. In OpenShift Container Platform, you can also replace an unhealthy etcd member. Restore the certificates and keys, on each master: # cd /etc/origin/master # tar xvf /tmp/certs-and-keys-$ (hostname). Subscriber exclusive content. 8 Backing up and restoring your OpenShift Container Platform cluster Red Hat OpenShift Documentation Team Legal Notice Abstract This document provides instructions for backing up your. OpenShift Container Platform 3. There are a variety of ways to customize a backup to avoid backing up inappropriate resources via namespaces or labels. openshift. If etcd encryption is enabled during a backup, the static_kuberesources_<datetimestamp>. 1, then this procedure generates a single file that contains the etcd snapshot and static Kubernetes API server resources. 2. The following commands are destructive and should be used with caution. Also, it is an important topic in the CKA certification exam. Provision as many new machines as there are masters to replace. sh script is backward compatible to accept this single file, which must be in the format of snapshot_db_kuberesources_<datetimestamp>. Create pvc with name etcd-backup; Note. In the initial release of OpenShift Container Platform version 3. (1) 1. Downgrade to Docker 1. 11 clusters running multiple masters, one of the master nodes includes additional CA certificates in /etc/origin/master , /etc/etcd/ca, and /etc/etcd/generated_certs. 5. 5 due to dependencies on cluster state. Single-tenant, high-availability Kubernetes clusters in the public cloud. Red Hat OpenShift Container Platform. You can shut down a cluster and expect it to restart. 10 in Release Notes for an optional image manifest migration script. クラスターの etcd データを定期的にバックアップし、OpenShift Container Platform 環境外の安全な場所に保存するのが理想的です。. Create the cron job defined by the CRD by running the following command: $ oc create -f etcd-recurring-backup. 1, then this procedure generates a single file that contains the etcd snapshot and static Kubernetes API server resources. internal 2/2 Running 7 122m etcd-member-ip-10-0-171-108. Get training, subscriptions, certifications, and more for partners to build, sell, and support customer solutions. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. This backup can be saved and used at a later time if you need to restore etcd. Build, deploy and manage your applications across cloud- and on-premise infrastructure. ec2. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. 5. For <release_version>, specify the version number of OpenShift Container Platform to install, such as 4. Restore an Azure Red Hat OpenShift 4 Application. Access the healthy master and connect to the running etcd container. Red Hat OpenShift Container Platform. Access to the cluster as a user with the cluster-admin role through a certificate-based kubeconfig file, like the one that was used during installation. Securing etcd. Follow these steps to back up etcd data by creating a snapshot. 0. Do not take an etcd backup before the first certificate rotation completes, which occurs 24 hours after installation, otherwise the backup will contain expired certificates. Overview. Red Hat OpenShift Container Platform. yaml and deploy it. All etcd hosts should contain the master host name if the etcd cluster is co-located with master services, or all etcd instances should be visible if etcd is running separately. (1) 1. Remove the old secrets for the unhealthy etcd member that was removed. etcd は OpenShift Container Platform のキーと値のストアであり、すべてのリソースオブジェクトの状態を保存します。etcd のバックアップは、障害復旧で重要なロールを果たします。OpenShift Container Platform では、正常でない etcd メンバーを置き換える ことも. Etcd [operator. 3Gb for 8 days worth of backups is nothing these days. Use case 3: Create an etcd backup on Red Hat OpenShift. Removing etcd data-dir /var/lib/etcd Restoring etcd member etcd-member-ip-10-0-143-125. x has a 250 pod-per-node limit and a 60 compute node limit. If the etcd backup was taken from OpenShift Container Platform 4. Eventhough hub-rm5rq-master-0 is already unavailable, it is nice to have a backup just in case any additional problems arise (IE: human error) and the cluster ends up in a worst-state. openshift. ec2. 2 cluster must use an etcd backup that was taken from 4. 2. If the etcd backup was taken from OpenShift Container Platform 4. This snapshot can be saved and used at a later time if you need to restore etcd. クラスターの etcd データを定期的にバックアップし、OpenShift Container Platform 環境外の安全な場所に保存するのが理想的. This includes situations where a majority of master hosts have been lost, leading to etcd quorum loss and the cluster going offline. 11. You can use one healthy etcd node to form a new cluster, but you must remove all other healthy nodes. compute. Build, deploy and manage your applications across cloud- and on-premise infrastructure. 1, Red Hat introduced the concept of channels for recommending the appropriate release versions for cluster upgrades. Get product support and knowledge from the open source experts. tar. A known issue causes the maximum size of retained backups to be up to 10 GB greater than the configured value. io/v1] ImageContentSourcePolicy [operator. In OpenShift Container Platform, you can also replace an unhealthy etcd member. Backing up etcd. In the AWS console, stop the control plane machine instance. on each host using the following steps: Remove all local containers and images on the host. 2. In OpenShift Container Platform, you can perform a graceful shutdown of a cluster so that you can easily restart the cluster later. To do this, change to the openshift-etcd project. 2 cluster must use an etcd backup that was taken from 4. 6 due to dependencies on cluster state. If you are completing a large-scale upgrade, which involves at least 10 worker nodes and thousands of projects and pods, review Special considerations for large-scale upgrades to prevent. 3. In OpenShift Container Platform, you can also replace an unhealthy etcd member. OpenShift v3. In OpenShift Container Platform, you can also replace an unhealthy etcd member. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. Support for RHEL7 workers is removed in OpenShift Container Platform 4. When we look into stateful applications, we find many users still opt to use NFS as the storage solution, and while this is changing to more modern software-defined storage solutions, like GlusterFS, the truth is that NFS still. For information on the advisory (Moderate: OpenShift Container Platform 4. OpenShift 3. Backup etcd. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. io/v1] ImageContentSourcePolicy [operator. 4# etcdctl member list c300d358075445b, started, master-0,. 2 cluster must use an etcd backup that was taken. 4. 9 recovery guide mentions only etcdctl snapshot save, no etcdctl backup. Replacing the unhealthy etcd member" 5. OpenShift OAuth server: Users request tokens from the OpenShift OAuth server to authenticate themselves to the API. Then run the following commands to define the environment variables: export ROLE_NAME=etcd-operator. 10 to 3. For security reasons, store this file separately from the etcd snapshot. For example: Backup every 30 minutes and keep the last 3 backups. An etcd performance issue has been discovered on new and upgraded OpenShift Container Platform 3. The OADP 1. tar. Single-tenant, high-availability Kubernetes clusters in the public cloud. In OpenShift Container Platform, you can back up (saving state to separate storage) and restore (recreating state from separate storage) at the cluster level. An etcd backup plays a crucial role in disaster recovery. An etcd backup plays a crucial role in disaster recovery. The full state of a cluster installation includes: etcd data on each master. This document describes the process to recover from a complete loss of a master host. For restoring a backup using an earlier version, additional steps will be required for correctly recovering the cluster. Follow these steps to back up etcd data by creating a snapshot. Etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. There is also some preliminary support for per-project backup. If you choose to install and use the CLI locally, this tutorial requires that you're running the Azure CLI version 2. gz file contains the encryption keys for the etcd snapshot. For security reasons, store this file separately from the etcd snapshot. 11, the scaleup. etcd-ca. Connect to one of the restored master nodes, in this case, ocp-master1: $ ssh ocp-master1. 7. OpenShift Container Platform 4. Single-tenant, high-availability Kubernetes clusters in the public cloud. 1. Ensure that you back up the /etc/etcd/ directory, as noted in the etcd backup instructions. If etcd encryption is enabled during a backup, the static_kuberesources_<datetimestamp>. Overview of backup and restore operations in OpenShift Container Platform 1. Later, if needed, you can restore the snapshot. This migration process performs the following steps: Stop the master. Azure Red Hat OpenShift 4. Enter the following command to update the global pull secret for your cluster: $ oc set data secret/pull-secret -n openshift-config --from-file= . Solution Verified - Updated 2023-09 -23T13:21:29+00:00 - English . Build, deploy and manage your applications across cloud- and on-premise infrastructure. 10 openshift-control-plane-1 <none. Etcd encryption can be enabled in the cluster to effectively provide an additional layer of data security and canto debug in your cluster to help protect the loss of sensitive data if an etcd backup is exposed to incorrect parties. For best practice backup and recovery of OpenShift containers, apps and data need to have automatic back up. For security reasons, store this file separately from the etcd snapshot. Access the registry from the cluster by using internal routes: Access the node by getting the node’s address: $ oc get nodes $ oc debug nodes/<node_address>. etcd-client. If your Kubernetes cluster uses etcd as its backing store, make sure you have a back up plan for the data. In this case, master2 is failing. 1. sh /home/core/etcd_backups. 3. conf file to /etc/etcd/: # cp /backup/etcd-config-<timestamp>/etcd. Backup and disaster recovery. 10. gz. etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. The etcdctl backup command rewrites some of the metadata contained in the backup,. If you want to free up space in etcd, see OpenShift Container Platform 3. ec2. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. ec2. Install the etcd client. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. Determine which master node is currently the leader. Pass in the name of the unhealthy etcd member that you took note of earlier in this procedure. us-east-2. Red Hat OpenShift Dedicated. OpenShift Container Platform 4. An etcd backup plays a crucial role in disaster recovery. This backup can be saved and used at a later time if you need to restore etcd. 概要. Instead, you either take a snapshot from a live member with the etcdctl snapshot save command or copy the member/snap/db file from an etcd data directory. Note that the etcd backup still has all the references to the storage volumes. yaml Then adjust the storage configuration to your needs in backup-storage. tar. tar. Note that the etcd backup still has all the references to the storage volumes. If the cluster did not start properly, you might need to restore your cluster using an etcd backup. etcd 백업은 크게 2가지 방법으로 수행이 가능하다. Build, deploy and manage your applications across cloud- and on-premise infrastructure. Do not take an etcd backup before the first certificate rotation completes, which occurs 24 hours after installation, otherwise the backup will contain expired certificates. List the secrets for the unhealthy etcd member that was removed. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. ec2. internal from snapshot. NOTE: After any update in the OpenShift cluster, it is highly recommended to perform a backup of ETCD. 0 or later. $ oc delete secret -n openshift-etcd etcd-serving-metrics-ip-10-0-131-183. Restoring etcd quorum. To do this, OpenShift Container Platform draws on the extensive. 168. Clear market leader for Kubernetes backup and DR for OpenShift Value proposition Application-centric: Multi-layered backup with granular restores Integrated: OpenShift. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. Follow these steps: Forward the etcd service port and place the process in the background: kubectl port-forward --namespace default. The OpenShift backup module provides a choice during restore operations of two destinations: Restore to a Kubernetes cluster. 4. ec2. Add the new etcd host to the list of the etcd servers OpenShift Container Platform uses to store the data, and remove any failed etcd hosts: etcdClientInfo: ca: master. x CoreOS Servers; YOU CAN SUPPORT OUR WORK WITH A CUP OF COFFEE. Application networking. In OpenShift Container Platform, you can back up (saving state to separate storage) and restore (recreating state from separate storage) at the cluster level. Chapter 1. An etcd backup plays a crucial role in disaster recovery. In OpenShift Container Platform, you can also replace an unhealthy etcd member. The etcd package is required, even if using embedded etcd,. Red Hat OpenShift Dedicated. Red Hat OpenShift Dedicated. io/v1] ImageContentSourcePolicy [operator. Select the stopped instance, and click Actions → Instance Settings → Change instance type. This includes upgrading from previous minor versions, such as release 3. 1. For problematic updates, refer to troubleshooting guide. Restoring etcd quorum. You can use one healthy etcd node to form a new cluster, but you must remove all other healthy nodes. Here we’ll discuss taking your etcd backups to the next level by: Moving the etcd backups from the OpenShift control nodes to external storage; Managing the automated etcd backup kubernetes resources with GitOps; External Storage for etcd. ec2. crt keyFile: master. oc get pods -n openshift-etcd|grep etcd|grep -v quorum. Delete and recreate the control plane machine (also known as the master machine). Build, deploy and manage your applications across cloud- and on-premise infrastructure. The etcdctl backup command rewrites some of the metadata contained in the backup,. インス. internal. sh ” while also inputting the backup location. Control plane backup and restore. For security reasons, store this file separately from the etcd snapshot. The importance of this is that during cluster restoration, an etcd backup taken from the same z-stream release must be used. You do not need a snapshot from each master host in the cluster. Backup and restore procedures are not fully supported in OpenShift Container Platform 3. The etcd is an open-source, key value store used for persistent storage of all Kubernetes objects like deployment and pod information. When you restore from an etcd backup, the status of the workloads in OKD is also restored. The etcd-snapshot-restore. x very cleverly took the manual instructions from the backing up etcd documentation and automated them with a CronJob. So etcd is amazing and quick and light and highly available, what is not to love. md OpenShift etcd backup CronJob You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. etcd-client. Note that you must use an etcd backup that was taken from the same z-stream release, and then you can restore the OpenShift cluster from the backup. This is really no different than the process of when you remove a node from the cluster and add a new one back in its place. leading to etcd quorum loss and the cluster going offline. Upgrade - Upgrading etcd without downtime is a. internal 2/2 Running 0 15h etcd-member-ip-10-0-147-172. A Red Hat training course is available for OpenShift Container Platform. Note that the etcd backup still has all the references to the storage volumes. tar. Restoring OpenShift Container Platform from an etcd snapshot does not bring back the volume on the storage provider, and does not produce a running. It is important to take an etcd backup before performing this procedure so that your cluster can be restored if you encounter any issues. 1. Do not take a backup from each control plane host in the cluster. If etcd encryption is enabled during a backup, the static_kuberesources_<datetimestamp>. 100. If you run etcd on a separate host, you must back up etcd, take down your etcd cluster, and form a new one. openshift. When you restore etcd, OpenShift Container Platform starts launching the previous pods on nodes and reattaching the same storage. oc describe etcd cluster|grep “members are available” The output of this command will show how many etcd pods are running and also the pod that is failing. Perform the following steps to back up etcd data by creating an etcd snapshot and backing up the resources for the static pods. Overview of backup and restore operations; Shutting down a cluster gracefully; Restarting a cluster gracefully; Application backup and restore. 因此，对 etcd 数据进行备份同样的也非常重要。. If you run etcd as static pods on your master nodes, you stop the. e: human error) and the cluster ends up in a worst-state. Restoring etcd quorum. When you restore your cluster, you must use an etcd backup that was taken from the same z-stream release. 10 openshift-control-plane-1 <none. It is important to take an etcd backup before performing this procedure so that your cluster can be restored if you encounter any issues when restarting the cluster. SSH access to a master host. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. 9 openshift-control-plane-0 <none> <none> etcd-openshift-control-plane-1 5/5 Running 0 3h54m 192. Restoring etcd quorum. Get a shell into one of the contrail-etcd pods. 1. The OpenShift platform for running applications in containers can run both cloud-native applications and stateful applications. 4. 11에서 Control Plane (Master Nodes)에서 etcdctl 명령어로 snapshot 백업이 가능하다. In OpenShift Container Platform, you can also replace an unhealthy etcd member. The encryption process starts. When you restore etcd, OpenShift Container Platform starts launching the previous pods on nodes and reattaching the same storage. You should only save a snapshot from a single master host. If you run etcd as static pods on your master nodes, you stop the. 3. An etcd backup plays a crucial role in disaster recovery. There is also some preliminary support for per-project backup. Customer responsibilities. Restoring a single-node OpenShift Container Platform cluster using an etcd backup is not officially supported. Restarting the cluster. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. Large clusters with up to 600MiB of etcd data can expect a 10 to 15 minute outage of the API, web console, and controllers. If unexpected status for apstate is seen, troubleshoot the openshift service by: ssh apphub. openshift. 0. x to AWS S3 Bucket; Configure Static IPv4 Address in OpenShift 4. When new versions of OpenShift Container Platform are released, you can upgrade your existing cluster to apply the latest enhancements and bug fixes. Even though the cluster is expected to be functional after the restart, the cluster might not recover due to unexpected conditions, for example: etcd data corruption during shutdown. 7. io/v1]. Then adjust the storage configuration to your needs in backup-storage. During etcd quorum loss, applications that run on OpenShift Container Platform are unaffected. Restarting the cluster gracefully. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. 28. yaml. ) and perform the backup. You can perform the etcd data backup process on any master host that has connectivity to the etcd cluster, where the proper certificates are provided. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. An example of setting this up is in the following command: $ oc new-project ocp-etcd-backup --description "Openshift Backup Automation Tool" --display-name "Backup. First, create a namespace: oc new-project etcd-backup Since the container needs to be privileged, add the reqired RBAC rules: oc create -f backup-rbac. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. 10. io/v1alpha1] ImagePruner [imageregistry. Note etcdctl2 is an alias for the etcdctl tool that contains the proper flags to query the etcd cluster in v2 data model, as well as, etcdctl3 for v3 data model. Red Hat OpenShift Online. Upgrade methods and strategies. The etcd backup process itself is fairly simple and includes three main steps – starting a debug session, changing your root directory to /host, and launching a script called “ cluster-backup. 2:$ oc -n openshift-etcd get pods -l k8s-app = etcd. example. 2. io/v1] ImageContentSourcePolicy [operator. This backup can be saved and used at a later time if you need to restore etcd. It can take 20 minutes or longer for this process to complete, depending on the size of your cluster.